shared calendar - Page 275

jQuery and array of objects

- by sepoto

$(document).ready(function () { output = ""; $.ajax({ url: 'getevents.php', data: { ufirstname: 'ufirstname' }, type: 'post', success: function (output) { alert(output); var date = new Date(); var d = date.getDate(); var m = date.getMonth(); var y = date.getFullYear(); $('#calendar').fullCalendar({ header: { left: 'prev,next today', center: 'title', right: 'month,basicWeek,basicDay' }, editable: true, events: output }); } }); }); I have code like this and if I copy the text verbatim out of my alert box and replace events: output with events: [{ id: 1, title: 'Birthday', start: new Date(1355011200*1000), end: new Date(1355011200*1000), allDay: true, url: 'http://www.yahoo.com/'},{ id: 2, title: 'Birthday Hangover', start: new Date(1355097600*1000), end: new Date(1355097600*1000), allDay: false, url: 'http://www.yahoo.com'},{ id: 3, title: 'Sepotomus Maximus Christmas', start: new Date(1356393600*1000), end: new Date(1356393600*1000), allDay: false, url: 'http://www.yahoo.com/'},] Everything works just fine. What can I do to fix this problem? I though that using events: output would place the text in that location but it does not seem to be working. Thank you all kindly in advance for any comments or answers!

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Background-image is not displaying in Firefox

- by goa

Strange thing happens. Background-image is not displaying in Firefox under some versions of WindowsXP and Windows Vista, but displays in Firefox under Mac OSX. It also displays in IE. This is CSS: .cherry_banner { background: url("library/media/images/cherry_banner_top.png") no-repeat; width: 276px; display:block; min-height:100px; padding-top: 13px; color: #fdfdfd; margin-bottom:20px; } .cherry_banner a { color: #fdfdfd; } .cherry_banner a:hover { text-decoration:underline; } .cherry_banner li { list-style-type:none; } .cherry_banner h2 { font-size: 18px; margin-bottom: 10px; } .chb_text1 { background: url("library/media/images/cherry_banner_pixel.png") repeat-y; } .chb_text2 { background: url("library/media/images/cherry_banner_bottom.gif") bottom no-repeat; padding: 4px 14px 24px 25px; } And this is html: <div id="linkcat-8" class="cherry_banner tpt"><div class="chb_text1"><div class="chb_text2"> <h2>??? ?????????</h2> <ul class='xoxo blogroll'> <li><a href="http://inveda.ru/jyotish/naksatra-calendar/">???????? ?????????? ?????????????? ????????? ????????????? ??? ?? 2010?.</a></li> </ul> </div></div></div> You can see on http://www.inveda.ru - right column - red banner.

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How to solve this ?

- by Karthick

Hi all. I use the following code in java. It works well and it adds events into Google calendar. But in android it gives the Exception “Error connecting with login URI”.Can anyone help me to solve this?? CalendarService myService = new CalendarService("calendarTest"); String userName = "[email protected]"; String userPassword = "xxxxxxx"; // Create the necessary URL objects. try { metafeedUrl = new URL(METAFEED_URL_BASE + userName); eventFeedUrl = new URL(METAFEED_URL_BASE + userName + EVENT_FEED_URL_SUFFIX); } catch (MalformedURLException e) { // Bad URL strbuf.append(e.getMessage()); System.err.println("Uh oh - you've got an invalid URL."); e.printStackTrace(); return; } try { myService.setUserCredentials(userName, userPassword); // Demonstrate creating a single-occurrence event. CalendarEventEntry singleEvent = createSingleEvent(myService,"Event Title", "Event Description "); System.out.println("Successfully created event " +singleEvent.getTitle().getPlainText() ); // Demonstrate creating a quick add event. CalendarEventEntry quickAddEvent = createQuickAddEvent(myService,"Tennis with me June 22 3pm-3:30pm"); System.out.println("Successfully created quick add event " + quickAddEvent.getTitle().getPlainText()); } catch.......

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Calling a function from a ajax response content

- by pistolshrimp

Hi guys. I have a function when the page is ready. <script> $(function(){ function do_ajax(){ do some stuff } });.... This works great on that page. Then I make a .post call and load the response into a div. The response has a <script>$(selector).click(function(){ do_ajax(); });</script> with the result. I get an error "do_ajax() is undefined". How can I call do_ajax() from an event from the ajax content? Another one. I am using jquery ui datepicker. So, when the page is loaded, I invoke the $(".datepicker").datepicker(); This works great on that page. Then I make a .post call and load the response into a div. The response has a couple of .datepicker fields. The problem is that the newly loaded datepicker fields don't get the calendar unless I return <script>$(".datepicker").datepicker();</script> with the result. Is that how you guys do it or is there another way? Thanks!

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value types in the vm

- by john.rose

value types in the vm p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times} p.p2 {margin: 0.0px 0.0px 14.0px 0.0px; font: 14.0px Times} p.p3 {margin: 0.0px 0.0px 12.0px 0.0px; font: 14.0px Times} p.p4 {margin: 0.0px 0.0px 15.0px 0.0px; font: 14.0px Times} p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Courier} p.p6 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Courier; min-height: 17.0px} p.p7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times; min-height: 18.0px} p.p8 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 14.0px Times; min-height: 18.0px} p.p9 {margin: 0.0px 0.0px 12.0px 0.0px; font: 14.0px Times; min-height: 18.0px} p.p10 {margin: 0.0px 0.0px 12.0px 0.0px; font: 14.0px Times; color: #000000} li.li1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times} li.li7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times; min-height: 18.0px} span.s1 {font: 14.0px Courier} span.s2 {color: #000000} span.s3 {font: 14.0px Courier; color: #000000} ol.ol1 {list-style-type: decimal} Or, enduring values for a changing world. Introduction A value type is a data type which, generally speaking, is designed for being passed by value in and out of methods, and stored by value in data structures. The only value types which the Java language directly supports are the eight primitive types. Java indirectly and approximately supports value types, if they are implemented in terms of classes. For example, both Integer and String may be viewed as value types, especially if their usage is restricted to avoid operations appropriate to Object. In this note, we propose a definition of value types in terms of a design pattern for Java classes, accompanied by a set of usage restrictions. We also sketch the relation of such value types to tuple types (which are a JVM-level notion), and point out JVM optimizations that can apply to value types. This note is a thought experiment to extend the JVM’s performance model in support of value types. The demonstration has two phases. Initially the extension can simply use design patterns, within the current bytecode architecture, and in today’s Java language. But if the performance model is to be realized in practice, it will probably require new JVM bytecode features, changes to the Java language, or both. We will look at a few possibilities for these new features. An Axiom of Value In the context of the JVM, a value type is a data type equipped with construction, assignment, and equality operations, and a set of typed components, such that, whenever two variables of the value type produce equal corresponding values for their components, the values of the two variables cannot be distinguished by any JVM operation. Here are some corollaries: A value type is immutable, since otherwise a copy could be constructed and the original could be modified in one of its components, allowing the copies to be distinguished. Changing the component of a value type requires construction of a new value. The equals and hashCode operations are strictly component-wise. If a value type is represented by a JVM reference, that reference cannot be successfully synchronized on, and cannot be usefully compared for reference equality. A value type can be viewed in terms of what it doesn’t do. We can say that a value type omits all value-unsafe operations, which could violate the constraints on value types. These operations, which are ordinarily allowed for Java object types, are pointer equality comparison (the acmp instruction), synchronization (the monitor instructions), all the wait and notify methods of class Object, and non-trivial finalize methods. The clone method is also value-unsafe, although for value types it could be treated as the identity function. Finally, and most importantly, any side effect on an object (however visible) also counts as an value-unsafe operation. A value type may have methods, but such methods must not change the components of the value. It is reasonable and useful to define methods like toString, equals, and hashCode on value types, and also methods which are specifically valuable to users of the value type. Representations of Value Value types have two natural representations in the JVM, unboxed and boxed. An unboxed value consists of the components, as simple variables. For example, the complex number x=(1+2i), in rectangular coordinate form, may be represented in unboxed form by the following pair of variables: /*Complex x = Complex.valueOf(1.0, 2.0):*/ double x_re = 1.0, x_im = 2.0; These variables might be locals, parameters, or fields. Their association as components of a single value is not defined to the JVM. Here is a sample computation which computes the norm of the difference between two complex numbers: double distance(/*Complex x:*/ double x_re, double x_im, /*Complex y:*/ double y_re, double y_im) { /*Complex z = x.minus(y):*/ double z_re = x_re - y_re, z_im = x_im - y_im; /*return z.abs():*/ return Math.sqrt(z_re*z_re + z_im*z_im); } A boxed representation groups component values under a single object reference. The reference is to a ‘wrapper class’ that carries the component values in its fields. (A primitive type can naturally be equated with a trivial value type with just one component of that type. In that view, the wrapper class Integer can serve as a boxed representation of value type int.) The unboxed representation of complex numbers is practical for many uses, but it fails to cover several major use cases: return values, array elements, and generic APIs. The two components of a complex number cannot be directly returned from a Java function, since Java does not support multiple return values. The same story applies to array elements: Java has no ’array of structs’ feature. (Double-length arrays are a possible workaround for complex numbers, but not for value types with heterogeneous components.) By generic APIs I mean both those which use generic types, like Arrays.asList and those which have special case support for primitive types, like String.valueOf and PrintStream.println. Those APIs do not support unboxed values, and offer some problems to boxed values. Any ’real’ JVM type should have a story for returns, arrays, and API interoperability. The basic problem here is that value types fall between primitive types and object types. Value types are clearly more complex than primitive types, and object types are slightly too complicated. Objects are a little bit dangerous to use as value carriers, since object references can be compared for pointer equality, and can be synchronized on. Also, as many Java programmers have observed, there is often a performance cost to using wrapper objects, even on modern JVMs. Even so, wrapper classes are a good starting point for talking about value types. If there were a set of structural rules and restrictions which would prevent value-unsafe operations on value types, wrapper classes would provide a good notation for defining value types. This note attempts to define such rules and restrictions. Let’s Start Coding Now it is time to look at some real code. Here is a definition, written in Java, of a complex number value type. @ValueSafe public final class Complex implements java.io.Serializable { // immutable component structure: public final double re, im; private Complex(double re, double im) { this.re = re; this.im = im; } // interoperability methods: public String toString() { return "Complex("+re+","+im+")"; } public List<Double> asList() { return Arrays.asList(re, im); } public boolean equals(Complex c) { return re == c.re && im == c.im; } public boolean equals(@ValueSafe Object x) { return x instanceof Complex && equals((Complex) x); } public int hashCode() { return 31*Double.valueOf(re).hashCode() + Double.valueOf(im).hashCode(); } // factory methods: public static Complex valueOf(double re, double im) { return new Complex(re, im); } public Complex changeRe(double re2) { return valueOf(re2, im); } public Complex changeIm(double im2) { return valueOf(re, im2); } public static Complex cast(@ValueSafe Object x) { return x == null ? ZERO : (Complex) x; } // utility methods and constants: public Complex plus(Complex c) { return new Complex(re+c.re, im+c.im); } public Complex minus(Complex c) { return new Complex(re-c.re, im-c.im); } public double abs() { return Math.sqrt(re*re + im*im); } public static final Complex PI = valueOf(Math.PI, 0.0); public static final Complex ZERO = valueOf(0.0, 0.0); } This is not a minimal definition, because it includes some utility methods and other optional parts. The essential elements are as follows: The class is marked as a value type with an annotation. The class is final, because it does not make sense to create subclasses of value types. The fields of the class are all non-private and final. (I.e., the type is immutable and structurally transparent.) From the supertype Object, all public non-final methods are overridden. The constructor is private. Beyond these bare essentials, we can observe the following features in this example, which are likely to be typical of all value types: One or more factory methods are responsible for value creation, including a component-wise valueOf method. There are utility methods for complex arithmetic and instance creation, such as plus and changeIm. There are static utility constants, such as PI. The type is serializable, using the default mechanisms. There are methods for converting to and from dynamically typed references, such as asList and cast. The Rules In order to use value types properly, the programmer must avoid value-unsafe operations. A helpful Java compiler should issue errors (or at least warnings) for code which provably applies value-unsafe operations, and should issue warnings for code which might be correct but does not provably avoid value-unsafe operations. No such compilers exist today, but to simplify our account here, we will pretend that they do exist. A value-safe type is any class, interface, or type parameter marked with the @ValueSafe annotation, or any subtype of a value-safe type. If a value-safe class is marked final, it is in fact a value type. All other value-safe classes must be abstract. The non-static fields of a value class must be non-public and final, and all its constructors must be private. Under the above rules, a standard interface could be helpful to define value types like Complex. Here is an example: @ValueSafe public interface ValueType extends java.io.Serializable { // All methods listed here must get redefined. // Definitions must be value-safe, which means // they may depend on component values only. List<? extends Object> asList(); int hashCode(); boolean equals(@ValueSafe Object c); String toString(); } //@ValueSafe inherited from supertype: public final class Complex implements ValueType { … The main advantage of such a conventional interface is that (unlike an annotation) it is reified in the runtime type system. It could appear as an element type or parameter bound, for facilities which are designed to work on value types only. More broadly, it might assist the JVM to perform dynamic enforcement of the rules for value types. Besides types, the annotation @ValueSafe can mark fields, parameters, local variables, and methods. (This is redundant when the type is also value-safe, but may be useful when the type is Object or another supertype of a value type.) Working forward from these annotations, an expression E is defined as value-safe if it satisfies one or more of the following: The type of E is a value-safe type. E names a field, parameter, or local variable whose declaration is marked @ValueSafe. E is a call to a method whose declaration is marked @ValueSafe. E is an assignment to a value-safe variable, field reference, or array reference. E is a cast to a value-safe type from a value-safe expression. E is a conditional expression E0 ? E1 : E2, and both E1 and E2 are value-safe. Assignments to value-safe expressions and initializations of value-safe names must take their values from value-safe expressions. A value-safe expression may not be the subject of a value-unsafe operation. In particular, it cannot be synchronized on, nor can it be compared with the “==” operator, not even with a null or with another value-safe type. In a program where all of these rules are followed, no value-type value will be subject to a value-unsafe operation. Thus, the prime axiom of value types will be satisfied, that no two value type will be distinguishable as long as their component values are equal. More Code To illustrate these rules, here are some usage examples for Complex: Complex pi = Complex.valueOf(Math.PI, 0); Complex zero = pi.changeRe(0); //zero = pi; zero.re = 0; ValueType vtype = pi; @SuppressWarnings("value-unsafe") Object obj = pi; @ValueSafe Object obj2 = pi; obj2 = new Object(); // ok List<Complex> clist = new ArrayList<Complex>(); clist.add(pi); // (ok assuming List.add param is @ValueSafe) List<ValueType> vlist = new ArrayList<ValueType>(); vlist.add(pi); // (ok) List<Object> olist = new ArrayList<Object>(); olist.add(pi); // warning: "value-unsafe" boolean z = pi.equals(zero); boolean z1 = (pi == zero); // error: reference comparison on value type boolean z2 = (pi == null); // error: reference comparison on value type boolean z3 = (pi == obj2); // error: reference comparison on value type synchronized (pi) { } // error: synch of value, unpredictable result synchronized (obj2) { } // unpredictable result Complex qq = pi; qq = null; // possible NPE; warning: “null-unsafe" qq = (Complex) obj; // warning: “null-unsafe" qq = Complex.cast(obj); // OK @SuppressWarnings("null-unsafe") Complex empty = null; // possible NPE qq = empty; // possible NPE (null pollution) The Payoffs It follows from this that either the JVM or the java compiler can replace boxed value-type values with unboxed ones, without affecting normal computations. Fields and variables of value types can be split into their unboxed components. Non-static methods on value types can be transformed into static methods which take the components as value parameters. Some common questions arise around this point in any discussion of value types. Why burden the programmer with all these extra rules? Why not detect programs automagically and perform unboxing transparently? The answer is that it is easy to break the rules accidently unless they are agreed to by the programmer and enforced. Automatic unboxing optimizations are tantalizing but (so far) unreachable ideal. In the current state of the art, it is possible exhibit benchmarks in which automatic unboxing provides the desired effects, but it is not possible to provide a JVM with a performance model that assures the programmer when unboxing will occur. This is why I’m writing this note, to enlist help from, and provide assurances to, the programmer. Basically, I’m shooting for a good set of user-supplied “pragmas” to frame the desired optimization. Again, the important thing is that the unboxing must be done reliably, or else programmers will have no reason to work with the extra complexity of the value-safety rules. There must be a reasonably stable performance model, wherein using a value type has approximately the same performance characteristics as writing the unboxed components as separate Java variables. There are some rough corners to the present scheme. Since Java fields and array elements are initialized to null, value-type computations which incorporate uninitialized variables can produce null pointer exceptions. One workaround for this is to require such variables to be null-tested, and the result replaced with a suitable all-zero value of the value type. That is what the “cast” method does above. Generically typed APIs like List<T> will continue to manipulate boxed values always, at least until we figure out how to do reification of generic type instances. Use of such APIs will elicit warnings until their type parameters (and/or relevant members) are annotated or typed as value-safe. Retrofitting List<T> is likely to expose flaws in the present scheme, which we will need to engineer around. Here are a couple of first approaches: public interface java.util.List<@ValueSafe T> extends Collection<T> { … public interface java.util.List<T extends Object|ValueType> extends Collection<T> { … (The second approach would require disjunctive types, in which value-safety is “contagious” from the constituent types.) With more transformations, the return value types of methods can also be unboxed. This may require significant bytecode-level transformations, and would work best in the presence of a bytecode representation for multiple value groups, which I have proposed elsewhere under the title “Tuples in the VM”. But for starters, the JVM can apply this transformation under the covers, to internally compiled methods. This would give a way to express multiple return values and structured return values, which is a significant pain-point for Java programmers, especially those who work with low-level structure types favored by modern vector and graphics processors. The lack of multiple return values has a strong distorting effect on many Java APIs. Even if the JVM fails to unbox a value, there is still potential benefit to the value type. Clustered computing systems something have copy operations (serialization or something similar) which apply implicitly to command operands. When copying JVM objects, it is extremely helpful to know when an object’s identity is important or not. If an object reference is a copied operand, the system may have to create a proxy handle which points back to the original object, so that side effects are visible. Proxies must be managed carefully, and this can be expensive. On the other hand, value types are exactly those types which a JVM can “copy and forget” with no downside. Array types are crucial to bulk data interfaces. (As data sizes and rates increase, bulk data becomes more important than scalar data, so arrays are definitely accompanying us into the future of computing.) Value types are very helpful for adding structure to bulk data, so a successful value type mechanism will make it easier for us to express richer forms of bulk data. Unboxing arrays (i.e., arrays containing unboxed values) will provide better cache and memory density, and more direct data movement within clustered or heterogeneous computing systems. They require the deepest transformations, relative to today’s JVM. There is an impedance mismatch between value-type arrays and Java’s covariant array typing, so compromises will need to be struck with existing Java semantics. It is probably worth the effort, since arrays of unboxed value types are inherently more memory-efficient than standard Java arrays, which rely on dependent pointer chains. It may be sufficient to extend the “value-safe” concept to array declarations, and allow low-level transformations to change value-safe array declarations from the standard boxed form into an unboxed tuple-based form. Such value-safe arrays would not be convertible to Object[] arrays. Certain connection points, such as Arrays.copyOf and System.arraycopy might need additional input/output combinations, to allow smooth conversion between arrays with boxed and unboxed elements. Alternatively, the correct solution may have to wait until we have enough reification of generic types, and enough operator overloading, to enable an overhaul of Java arrays. Implicit Method Definitions The example of class Complex above may be unattractively complex. I believe most or all of the elements of the example class are required by the logic of value types. If this is true, a programmer who writes a value type will have to write lots of error-prone boilerplate code. On the other hand, I think nearly all of the code (except for the domain-specific parts like plus and minus) can be implicitly generated. Java has a rule for implicitly defining a class’s constructor, if no it defines no constructors explicitly. Likewise, there are rules for providing default access modifiers for interface members. Because of the highly regular structure of value types, it might be reasonable to perform similar implicit transformations on value types. Here’s an example of a “highly implicit” definition of a complex number type: public class Complex implements ValueType { // implicitly final public double re, im; // implicitly public final //implicit methods are defined elementwise from te fields: // toString, asList, equals(2), hashCode, valueOf, cast //optionally, explicit methods (plus, abs, etc.) would go here } In other words, with the right defaults, a simple value type definition can be a one-liner. The observant reader will have noticed the similarities (and suitable differences) between the explicit methods above and the corresponding methods for List<T>. Another way to abbreviate such a class would be to make an annotation the primary trigger of the functionality, and to add the interface(s) implicitly: public @ValueType class Complex { … // implicitly final, implements ValueType (But to me it seems better to communicate the “magic” via an interface, even if it is rooted in an annotation.) Implicitly Defined Value Types So far we have been working with nominal value types, which is to say that the sequence of typed components is associated with a name and additional methods that convey the intention of the programmer. A simple ordered pair of floating point numbers can be variously interpreted as (to name a few possibilities) a rectangular or polar complex number or Cartesian point. The name and the methods convey the intended meaning. But what if we need a truly simple ordered pair of floating point numbers, without any further conceptual baggage? Perhaps we are writing a method (like “divideAndRemainder”) which naturally returns a pair of numbers instead of a single number. Wrapping the pair of numbers in a nominal type (like “QuotientAndRemainder”) makes as little sense as wrapping a single return value in a nominal type (like “Quotient”). What we need here are structural value types commonly known as tuples. For the present discussion, let us assign a conventional, JVM-friendly name to tuples, roughly as follows: public class java.lang.tuple.$DD extends java.lang.tuple.Tuple { double $1, $2; } Here the component names are fixed and all the required methods are defined implicitly. The supertype is an abstract class which has suitable shared declarations. The name itself mentions a JVM-style method parameter descriptor, which may be “cracked” to determine the number and types of the component fields. The odd thing about such a tuple type (and structural types in general) is it must be instantiated lazily, in response to linkage requests from one or more classes that need it. The JVM and/or its class loaders must be prepared to spin a tuple type on demand, given a simple name reference, $xyz, where the xyz is cracked into a series of component types. (Specifics of naming and name mangling need some tasteful engineering.) Tuples also seem to demand, even more than nominal types, some support from the language. (This is probably because notations for non-nominal types work best as combinations of punctuation and type names, rather than named constructors like Function3 or Tuple2.) At a minimum, languages with tuples usually (I think) have some sort of simple bracket notation for creating tuples, and a corresponding pattern-matching syntax (or “destructuring bind”) for taking tuples apart, at least when they are parameter lists. Designing such a syntax is no simple thing, because it ought to play well with nominal value types, and also with pre-existing Java features, such as method parameter lists, implicit conversions, generic types, and reflection. That is a task for another day. Other Use Cases Besides complex numbers and simple tuples there are many use cases for value types. Many tuple-like types have natural value-type representations. These include rational numbers, point locations and pixel colors, and various kinds of dates and addresses. Other types have a variable-length ‘tail’ of internal values. The most common example of this is String, which is (mathematically) a sequence of UTF-16 character values. Similarly, bit vectors, multiple-precision numbers, and polynomials are composed of sequences of values. Such types include, in their representation, a reference to a variable-sized data structure (often an array) which (somehow) represents the sequence of values. The value type may also include ’header’ information. Variable-sized values often have a length distribution which favors short lengths. In that case, the design of the value type can make the first few values in the sequence be direct ’header’ fields of the value type. In the common case where the header is enough to represent the whole value, the tail can be a shared null value, or even just a null reference. Note that the tail need not be an immutable object, as long as the header type encapsulates it well enough. This is the case with String, where the tail is a mutable (but never mutated) character array. Field types and their order must be a globally visible part of the API. The structure of the value type must be transparent enough to have a globally consistent unboxed representation, so that all callers and callees agree about the type and order of components that appear as parameters, return types, and array elements. This is a trade-off between efficiency and encapsulation, which is forced on us when we remove an indirection enjoyed by boxed representations. A JVM-only transformation would not care about such visibility, but a bytecode transformation would need to take care that (say) the components of complex numbers would not get swapped after a redefinition of Complex and a partial recompile. Perhaps constant pool references to value types need to declare the field order as assumed by each API user. This brings up the delicate status of private fields in a value type. It must always be possible to load, store, and copy value types as coordinated groups, and the JVM performs those movements by moving individual scalar values between locals and stack. If a component field is not public, what is to prevent hostile code from plucking it out of the tuple using a rogue aload or astore instruction? Nothing but the verifier, so we may need to give it more smarts, so that it treats value types as inseparable groups of stack slots or locals (something like long or double). My initial thought was to make the fields always public, which would make the security problem moot. But public is not always the right answer; consider the case of String, where the underlying mutable character array must be encapsulated to prevent security holes. I believe we can win back both sides of the tradeoff, by training the verifier never to split up the components in an unboxed value. Just as the verifier encapsulates the two halves of a 64-bit primitive, it can encapsulate the the header and body of an unboxed String, so that no code other than that of class String itself can take apart the values. Similar to String, we could build an efficient multi-precision decimal type along these lines: public final class DecimalValue extends ValueType { protected final long header; protected private final BigInteger digits; public DecimalValue valueOf(int value, int scale) { assert(scale >= 0); return new DecimalValue(((long)value << 32) + scale, null); } public DecimalValue valueOf(long value, int scale) { if (value == (int) value) return valueOf((int)value, scale); return new DecimalValue(-scale, new BigInteger(value)); } } Values of this type would be passed between methods as two machine words. Small values (those with a significand which fits into 32 bits) would be represented without any heap data at all, unless the DecimalValue itself were boxed. (Note the tension between encapsulation and unboxing in this case. It would be better if the header and digits fields were private, but depending on where the unboxing information must “leak”, it is probably safer to make a public revelation of the internal structure.) Note that, although an array of Complex can be faked with a double-length array of double, there is no easy way to fake an array of unboxed DecimalValues. (Either an array of boxed values or a transposed pair of homogeneous arrays would be reasonable fallbacks, in a current JVM.) Getting the full benefit of unboxing and arrays will require some new JVM magic. Although the JVM emphasizes portability, system dependent code will benefit from using machine-level types larger than 64 bits. For example, the back end of a linear algebra package might benefit from value types like Float4 which map to stock vector types. This is probably only worthwhile if the unboxing arrays can be packed with such values. More Daydreams A more finely-divided design for dynamic enforcement of value safety could feature separate marker interfaces for each invariant. An empty marker interface Unsynchronizable could cause suitable exceptions for monitor instructions on objects in marked classes. More radically, a Interchangeable marker interface could cause JVM primitives that are sensitive to object identity to raise exceptions; the strangest result would be that the acmp instruction would have to be specified as raising an exception. @ValueSafe public interface ValueType extends java.io.Serializable, Unsynchronizable, Interchangeable { … public class Complex implements ValueType { // inherits Serializable, Unsynchronizable, Interchangeable, @ValueSafe … It seems possible that Integer and the other wrapper types could be retro-fitted as value-safe types. This is a major change, since wrapper objects would be unsynchronizable and their references interchangeable. It is likely that code which violates value-safety for wrapper types exists but is uncommon. It is less plausible to retro-fit String, since the prominent operation String.intern is often used with value-unsafe code. We should also reconsider the distinction between boxed and unboxed values in code. The design presented above obscures that distinction. As another thought experiment, we could imagine making a first class distinction in the type system between boxed and unboxed representations. Since only primitive types are named with a lower-case initial letter, we could define that the capitalized version of a value type name always refers to the boxed representation, while the initial lower-case variant always refers to boxed. For example: complex pi = complex.valueOf(Math.PI, 0); Complex boxPi = pi; // convert to boxed myList.add(boxPi); complex z = myList.get(0); // unbox Such a convention could perhaps absorb the current difference between int and Integer, double and Double. It might also allow the programmer to express a helpful distinction among array types. As said above, array types are crucial to bulk data interfaces, but are limited in the JVM. Extending arrays beyond the present limitations is worth thinking about; for example, the Maxine JVM implementation has a hybrid object/array type. Something like this which can also accommodate value type components seems worthwhile. On the other hand, does it make sense for value types to contain short arrays? And why should random-access arrays be the end of our design process, when bulk data is often sequentially accessed, and it might make sense to have heterogeneous streams of data as the natural “jumbo” data structure. These considerations must wait for another day and another note. More Work It seems to me that a good sequence for introducing such value types would be as follows: Add the value-safety restrictions to an experimental version of javac. Code some sample applications with value types, including Complex and DecimalValue. Create an experimental JVM which internally unboxes value types but does not require new bytecodes to do so. Ensure the feasibility of the performance model for the sample applications. Add tuple-like bytecodes (with or without generic type reification) to a major revision of the JVM, and teach the Java compiler to switch in the new bytecodes without code changes. A staggered roll-out like this would decouple language changes from bytecode changes, which is always a convenient thing. A similar investigation should be applied (concurrently) to array types. In this case, it seems to me that the starting point is in the JVM: Add an experimental unboxing array data structure to a production JVM, perhaps along the lines of Maxine hybrids. No bytecode or language support is required at first; everything can be done with encapsulated unsafe operations and/or method handles. Create an experimental JVM which internally unboxes value types but does not require new bytecodes to do so. Ensure the feasibility of the performance model for the sample applications. Add tuple-like bytecodes (with or without generic type reification) to a major revision of the JVM, and teach the Java compiler to switch in the new bytecodes without code changes. That’s enough musing me for now. Back to work!

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Diving into OpenStack Network Architecture - Part 2 - Basic Use Cases

- by Ronen Kofman

rkofman Normal rkofman 4 138 2014-06-05T03:38:00Z 2014-06-05T05:04:00Z 3 2735 15596 Oracle Corporation 129 36 18295 12.00 Clean Clean false false false false EN-US X-NONE HE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial; mso-bidi-theme-font:minor-bidi; mso-bidi-language:AR-SA;} In the previous post we reviewed several network components including Open vSwitch, Network Namespaces, Linux Bridges and veth pairs. In this post we will take three simple use cases and see how those basic components come together to create a complete SDN solution in OpenStack. With those three use cases we will review almost the entire network setup and see how all the pieces work together. The use cases we will use are: 1. Create network – what happens when we create network and how can we create multiple isolated networks 2. Launch a VM – once we have networks we can launch VMs and connect them to networks. 3. DHCP request from a VM – OpenStack can automatically assign IP addresses to VMs. This is done through local DHCP service controlled by OpenStack Neutron. We will see how this service runs and how does a DHCP request and response look like. In this post we will show connectivity, we will see how packets get from point A to point B. We first focus on how a configured deployment looks like and only later we will discuss how and when the configuration is created. Personally I found it very valuable to see the actual interfaces and how they connect to each other through examples and hands on experiments. After the end game is clear and we know how the connectivity works, in a later post, we will take a step back and explain how Neutron configures the components to be able to provide such connectivity. We are going to get pretty technical shortly and I recommend trying these examples on your own deployment or using the Oracle OpenStack Tech Preview. Understanding these three use cases thoroughly and how to look at them will be very helpful when trying to debug a deployment in case something does not work. Use case #1: Create Network Create network is a simple operation it can be performed from the GUI or command line. When we create a network in OpenStack the network is only available to the tenant who created it or it could be defined as “shared” and then it can be used by all tenants. A network can have multiple subnets but for this demonstration purpose and for simplicity we will assume that each network has exactly one subnet. Creating a network from the command line will look like this: # neutron net-create net1 Created a new network: +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | True | | id | 5f833617-6179-4797-b7c0-7d420d84040c | | name | net1 | | provider:network_type | vlan | | provider:physical_network | default | | provider:segmentation_id | 1000 | | shared | False | | status | ACTIVE | | subnets | | | tenant_id | 9796e5145ee546508939cd49ad59d51f | +---------------------------+--------------------------------------+ Creating a subnet for this network will look like this: # neutron subnet-create net1 10.10.10.0/24 Created a new subnet: +------------------+------------------------------------------------+ | Field | Value | +------------------+------------------------------------------------+ | allocation_pools | {"start": "10.10.10.2", "end": "10.10.10.254"} | | cidr | 10.10.10.0/24 | | dns_nameservers | | | enable_dhcp | True | | gateway_ip | 10.10.10.1 | | host_routes | | | id | 2d7a0a58-0674-439a-ad23-d6471aaae9bc | | ip_version | 4 | | name | | | network_id | 5f833617-6179-4797-b7c0-7d420d84040c | | tenant_id | 9796e5145ee546508939cd49ad59d51f | +------------------+------------------------------------------------+ We now have a network and a subnet, on the network topology view this looks like this: Now let’s dive in and see what happened under the hood. Looking at the control node we will discover that a new namespace was created: # ip netns list qdhcp-5f833617-6179-4797-b7c0-7d420d84040c The name of the namespace is qdhcp-<network id> (see above), let’s look into the namespace and see what’s in it: # ip netns exec qdhcp-5f833617-6179-4797-b7c0-7d420d84040c ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 12: tap26c9b807-7c: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN link/ether fa:16:3e:1d:5c:81 brd ff:ff:ff:ff:ff:ff inet 10.10.10.3/24 brd 10.10.10.255 scope global tap26c9b807-7c inet6 fe80::f816:3eff:fe1d:5c81/64 scope link valid_lft forever preferred_lft forever We see two interfaces in the namespace, one is the loopback and the other one is an interface called “tap26c9b807-7c”. This interface has the IP address of 10.10.10.3 and it will also serve dhcp requests in a way we will see later. Let’s trace the connectivity of the “tap26c9b807-7c” interface from the namespace. First stop is OVS, we see that the interface connects to bridge “br-int” on OVS: # ovs-vsctl show 8a069c7c-ea05-4375-93e2-b9fc9e4b3ca1 Bridge "br-eth2" Port "br-eth2" Interface "br-eth2" type: internal Port "eth2" Interface "eth2" Port "phy-br-eth2" Interface "phy-br-eth2" Bridge br-ex Port br-ex Interface br-ex type: internal Bridge br-int Port "int-br-eth2" Interface "int-br-eth2" Port "tap26c9b807-7c" tag: 1 Interface "tap26c9b807-7c" type: internal Port br-int Interface br-int type: internal ovs_version: "1.11.0" In the picture above we have a veth pair which has two ends called “int-br-eth2” and "phy-br-eth2", this veth pair is used to connect two bridge in OVS "br-eth2" and "br-int". In the previous post we explained how to check the veth connectivity using the ethtool command. It shows that the two are indeed a pair: # ethtool -S int-br-eth2 NIC statistics: peer_ifindex: 10 . . #ip link . . 10: phy-br-eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 . . Note that “phy-br-eth2” is connected to a bridge called "br-eth2" and one of this bridge's interfaces is the physical link eth2. This means that the network which we have just created has created a namespace which is connected to the physical interface eth2. eth2 is the “VM network” the physical interface where all the virtual machines connect to where all the VMs are connected. About network isolation: OpenStack supports creation of multiple isolated networks and can use several mechanisms to isolate the networks from one another. The isolation mechanism can be VLANs, VxLANs or GRE tunnels, this is configured as part of the initial setup in our deployment we use VLANs. When using VLAN tagging as an isolation mechanism a VLAN tag is allocated by Neutron from a pre-defined VLAN tags pool and assigned to the newly created network. By provisioning VLAN tags to the networks Neutron allows creation of multiple isolated networks on the same physical link. The big difference between this and other platforms is that the user does not have to deal with allocating and managing VLANs to networks. The VLAN allocation and provisioning is handled by Neutron which keeps track of the VLAN tags, and responsible for allocating and reclaiming VLAN tags. In the example above net1 has the VLAN tag 1000, this means that whenever a VM is created and connected to this network the packets from that VM will have to be tagged with VLAN tag 1000 to go on this particular network. This is true for namespace as well, if we would like to connect a namespace to a particular network we have to make sure that the packets to and from the namespace are correctly tagged when they reach the VM network. In the example above we see that the namespace interface “tap26c9b807-7c” has vlan tag 1 assigned to it, if we examine OVS we see that it has flows which modify VLAN tag 1 to VLAN tag 1000 when a packet goes to the VM network on eth2 and vice versa. We can see this using the dump-flows command on OVS for packets going to the VM network we see the modification done on br-eth2: # ovs-ofctl dump-flows br-eth2 NXST_FLOW reply (xid=0x4): cookie=0x0, duration=18669.401s, table=0, n_packets=857, n_bytes=163350, idle_age=25, priority=4,in_port=2,dl_vlan=1 actions=mod_vlan_vid:1000,NORMAL cookie=0x0, duration=165108.226s, table=0, n_packets=14, n_bytes=1000, idle_age=5343, hard_age=65534, priority=2,in_port=2 actions=drop cookie=0x0, duration=165109.813s, table=0, n_packets=1671, n_bytes=213304, idle_age=25, hard_age=65534, priority=1 actions=NORMAL For packets coming from the interface to the namespace we see the following modification: # ovs-ofctl dump-flows br-int NXST_FLOW reply (xid=0x4): cookie=0x0, duration=18690.876s, table=0, n_packets=1610, n_bytes=210752, idle_age=1, priority=3,in_port=1,dl_vlan=1000 actions=mod_vlan_vid:1,NORMAL cookie=0x0, duration=165130.01s, table=0, n_packets=75, n_bytes=3686, idle_age=4212, hard_age=65534, priority=2,in_port=1 actions=drop cookie=0x0, duration=165131.96s, table=0, n_packets=863, n_bytes=160727, idle_age=1, hard_age=65534, priority=1 actions=NORMAL To summarize we can see that when a user creates a network Neutron creates a namespace and this namespace is connected through OVS to the “VM network”. OVS also takes care of tagging the packets from the namespace to the VM network with the correct VLAN tag and knows to modify the VLAN for packets coming from VM network to the namespace. Now let’s see what happens when a VM is launched and how it is connected to the “VM network”. Use case #2: Launch a VM Launching a VM can be done from Horizon or from the command line this is how we do it from Horizon: Attach the network: And Launch Once the virtual machine is up and running we can see the associated IP using the nova list command : # nova list +--------------------------------------+--------------+--------+------------+-------------+-----------------+ | ID | Name | Status | Task State | Power State | Networks | +--------------------------------------+--------------+--------+------------+-------------+-----------------+ | 3707ac87-4f5d-4349-b7ed-3a673f55e5e1 | Oracle Linux | ACTIVE | None | Running | net1=10.10.10.2 | +--------------------------------------+--------------+--------+------------+-------------+-----------------+ The nova list command shows us that the VM is running and that the IP 10.10.10.2 is assigned to this VM. Let’s trace the connectivity from the VM to VM network on eth2 starting with the VM definition file. The configuration files of the VM including the virtual disk(s), in case of ephemeral storage, are stored on the compute node at/var/lib/nova/instances/<instance-id>/. Looking into the VM definition file ,libvirt.xml, we see that the VM is connected to an interface called “tap53903a95-82” which is connected to a Linux bridge called “qbr53903a95-82”: <interface type="bridge"> <mac address="fa:16:3e:fe:c7:87"/> <source bridge="qbr53903a95-82"/> <target dev="tap53903a95-82"/> </interface> Looking at the bridge using the brctl show command we see this: # brctl show bridge name bridge id STP enabled interfaces qbr53903a95-82 8000.7e7f3282b836 no qvb53903a95-82 tap53903a95-82 The bridge has two interfaces, one connected to the VM (“tap53903a95-82 “) and another one ( “qvb53903a95-82”) connected to “br-int” bridge on OVS: # ovs-vsctl show 83c42f80-77e9-46c8-8560-7697d76de51c Bridge "br-eth2" Port "br-eth2" Interface "br-eth2" type: internal Port "eth2" Interface "eth2" Port "phy-br-eth2" Interface "phy-br-eth2" Bridge br-int Port br-int Interface br-int type: internal Port "int-br-eth2" Interface "int-br-eth2" Port "qvo53903a95-82" tag: 3 Interface "qvo53903a95-82" ovs_version: "1.11.0" As we showed earlier “br-int” is connected to “br-eth2” on OVS using the veth pair int-br-eth2,phy-br-eth2 and br-eth2 is connected to the physical interface eth2. The whole flow end to end looks like this: VM è tap53903a95-82 (virtual interface)è qbr53903a95-82 (Linux bridge) è qvb53903a95-82 (interface connected from Linux bridge to OVS bridge br-int) è int-br-eth2 (veth one end) è phy-br-eth2 (veth the other end) è eth2 physical interface. The purpose of the Linux Bridge connecting to the VM is to allow security group enforcement with iptables. Security groups are enforced at the edge point which are the interface of the VM, since iptables nnot be applied to OVS bridges we use Linux bridge to apply them. In the future we hope to see this Linux Bridge going away rules. VLAN tags: As we discussed in the first use case net1 is using VLAN tag 1000, looking at OVS above we see that qvo41f1ebcf-7c is tagged with VLAN tag 3. The modification from VLAN tag 3 to 1000 as we go to the physical network is done by OVS as part of the packet flow of br-eth2 in the same way we showed before. To summarize, when a VM is launched it is connected to the VM network through a chain of elements as described here. During the packet from VM to the network and back the VLAN tag is modified. Use case #3: Serving a DHCP request coming from the virtual machine In the previous use cases we have shown that both the namespace called dhcp-<some id> and the VM end up connecting to the physical interface eth2 on their respective nodes, both will tag their packets with VLAN tag 1000.We saw that the namespace has an interface with IP of 10.10.10.3. Since the VM and the namespace are connected to each other and have interfaces on the same subnet they can ping each other, in this picture we see a ping from the VM which was assigned 10.10.10.2 to the namespace: The fact that they are connected and can ping each other can become very handy when something doesn’t work right and we need to isolate the problem. In such case knowing that we should be able to ping from the VM to the namespace and back can be used to trace the disconnect using tcpdump or other monitoring tools. To serve DHCP requests coming from VMs on the network Neutron uses a Linux tool called “dnsmasq”,this is a lightweight DNS and DHCP service you can read more about it here. If we look at the dnsmasq on the control node with the ps command we see this: dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap26c9b807-7c --except-interface=lo --pid-file=/var/lib/neutron/dhcp/5f833617-6179-4797-b7c0-7d420d84040c/pid --dhcp-hostsfile=/var/lib/neutron/dhcp/5f833617-6179-4797-b7c0-7d420d84040c/host --dhcp-optsfile=/var/lib/neutron/dhcp/5f833617-6179-4797-b7c0-7d420d84040c/opts --leasefile-ro --dhcp-range=tag0,10.10.10.0,static,120s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal The service connects to the tap interface in the namespace (“--interface=tap26c9b807-7c”), If we look at the hosts file we see this: # cat /var/lib/neutron/dhcp/5f833617-6179-4797-b7c0-7d420d84040c/host fa:16:3e:fe:c7:87,host-10-10-10-2.openstacklocal,10.10.10.2 If you look at the console output above you can see the MAC address fa:16:3e:fe:c7:87 which is the VM MAC. This MAC address is mapped to IP 10.10.10.2 and so when a DHCP request comes with this MAC dnsmasq will return the 10.10.10.2.If we look into the namespace at the time we initiate a DHCP request from the VM (this can be done by simply restarting the network service in the VM) we see the following: # ip netns exec qdhcp-5f833617-6179-4797-b7c0-7d420d84040c tcpdump -n 19:27:12.191280 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from fa:16:3e:fe:c7:87, length 310 19:27:12.191666 IP 10.10.10.3.bootps > 10.10.10.2.bootpc: BOOTP/DHCP, Reply, length 325 To summarize, the DHCP service is handled by dnsmasq which is configured by Neutron to listen to the interface in the DHCP namespace. Neutron also configures dnsmasq with the combination of MAC and IP so when a DHCP request comes along it will receive the assigned IP. Summary In this post we relied on the components described in the previous post and saw how network connectivity is achieved using three simple use cases. These use cases gave a good view of the entire network stack and helped understand how an end to end connection is being made between a VM on a compute node and the DHCP namespace on the control node. One conclusion we can draw from what we saw here is that if we launch a VM and it is able to perform a DHCP request and receive a correct IP then there is reason to believe that the network is working as expected. We saw that a packet has to travel through a long list of components before reaching its destination and if it has done so successfully this means that many components are functioning properly. In the next post we will look at some more sophisticated services Neutron supports and see how they work. We will see that while there are some more components involved for the most part the concepts are the same. @RonenKofman

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Using R to Analyze G1GC Log Files

- by user12620111

Using R to Analyze G1GC Log Files body, td { font-family: sans-serif; background-color: white; font-size: 12px; margin: 8px; } tt, code, pre { font-family: 'DejaVu Sans Mono', 'Droid Sans Mono', 'Lucida Console', Consolas, Monaco, monospace; } h1 { font-size:2.2em; } h2 { font-size:1.8em; } h3 { font-size:1.4em; } h4 { font-size:1.0em; } h5 { font-size:0.9em; } h6 { font-size:0.8em; } a:visited { color: rgb(50%, 0%, 50%); } pre { margin-top: 0; max-width: 95%; border: 1px solid #ccc; white-space: pre-wrap; } pre code { display: block; padding: 0.5em; } code.r, code.cpp { background-color: #F8F8F8; } table, td, th { border: none; } blockquote { color:#666666; margin:0; padding-left: 1em; border-left: 0.5em #EEE solid; } hr { height: 0px; border-bottom: none; border-top-width: thin; border-top-style: dotted; border-top-color: #999999; } @media print { * { background: transparent !important; color: black !important; filter:none !important; -ms-filter: none !important; } body { 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Using R to Analyze G1GC Log Files Using R to Analyze G1GC Log Files Introduction Working in Oracle Platform Integration gives an engineer opportunities to work on a wide array of technologies. My team’s goal is to make Oracle applications run best on the Solaris/SPARC platform. When looking for bottlenecks in a modern applications, one needs to be aware of not only how the CPUs and operating system are executing, but also network, storage, and in some cases, the Java Virtual Machine. I was recently presented with about 1.5 GB of Java Garbage First Garbage Collector log file data. If you’re not familiar with the subject, you might want to review Garbage First Garbage Collector Tuning by Monica Beckwith. The customer had been running Java HotSpot 1.6.0_31 to host a web application server. I was told that the Solaris/SPARC server was running a Java process launched using a commmand line that included the following flags: -d64 -Xms9g -Xmx9g -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:InitiatingHeapOccupancyPercent=80 -XX:PermSize=256m -XX:MaxPermSize=256m -XX:+PrintGC -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC -XX:+PrintGCDateStamps -XX:+PrintFlagsFinal -XX:+DisableExplicitGC -XX:+UnlockExperimentalVMOptions -XX:ParallelGCThreads=8 Several sources on the internet indicate that if I were to print out the 1.5 GB of log files, it would require enough paper to fill the bed of a pick up truck. Of course, it would be fruitless to try to scan the log files by hand. Tools will be required to summarize the contents of the log files. Others have encountered large Java garbage collection log files. There are existing tools to analyze the log files: IBM’s GC toolkit The chewiebug GCViewer gchisto HPjmeter Instead of using one of the other tools listed, I decide to parse the log files with standard Unix tools, and analyze the data with R. Data Cleansing The log files arrived in two different formats. I guess that the difference is that one set of log files was generated using a more verbose option, maybe -XX:+PrintHeapAtGC, and the other set of log files was generated without that option. Format 1 In some of the log files, the log files with the less verbose format, a single trace, i.e. the report of a singe garbage collection event, looks like this: {Heap before GC invocations=12280 (full 61): garbage-first heap total 9437184K, used 7499918K [0xfffffffd00000000, 0xffffffff40000000, 0xffffffff40000000) region size 4096K, 1 young (4096K), 0 survivors (0K) compacting perm gen total 262144K, used 144077K [0xffffffff40000000, 0xffffffff50000000, 0xffffffff50000000) the space 262144K, 54% used [0xffffffff40000000, 0xffffffff48cb3758, 0xffffffff48cb3800, 0xffffffff50000000) No shared spaces configured. 2014-05-14T07:24:00.988-0700: 60586.353: [GC pause (young) 7324M->7320M(9216M), 0.1567265 secs] Heap after GC invocations=12281 (full 61): garbage-first heap total 9437184K, used 7496533K [0xfffffffd00000000, 0xffffffff40000000, 0xffffffff40000000) region size 4096K, 0 young (0K), 0 survivors (0K) compacting perm gen total 262144K, used 144077K [0xffffffff40000000, 0xffffffff50000000, 0xffffffff50000000) the space 262144K, 54% used [0xffffffff40000000, 0xffffffff48cb3758, 0xffffffff48cb3800, 0xffffffff50000000) No shared spaces configured. } A simple grep can be used to extract a summary: $ grep "\[ GC pause (young" g1gc.log 2014-05-13T13:24:35.091-0700: 3.109: [GC pause (young) 20M->5029K(9216M), 0.0146328 secs] 2014-05-13T13:24:35.440-0700: 3.459: [GC pause (young) 9125K->6077K(9216M), 0.0086723 secs] 2014-05-13T13:24:37.581-0700: 5.599: [GC pause (young) 25M->8470K(9216M), 0.0203820 secs] 2014-05-13T13:24:42.686-0700: 10.704: [GC pause (young) 44M->15M(9216M), 0.0288848 secs] 2014-05-13T13:24:48.941-0700: 16.958: [GC pause (young) 51M->20M(9216M), 0.0491244 secs] 2014-05-13T13:24:56.049-0700: 24.066: [GC pause (young) 92M->26M(9216M), 0.0525368 secs] 2014-05-13T13:25:34.368-0700: 62.383: [GC pause (young) 602M->68M(9216M), 0.1721173 secs] But that format wasn't easily read into R, so I needed to be a bit more tricky. I used the following Unix command to create a summary file that was easy for R to read. $ echo "SecondsSinceLaunch BeforeSize AfterSize TotalSize RealTime" $ grep "\[GC pause (young" g1gc.log | grep -v mark | sed -e 's/[A-SU-z,]/ /g' -e 's/->/ /' -e 's/: / /g' | more SecondsSinceLaunch BeforeSize AfterSize TotalSize RealTime 2014-05-13T13:24:35.091-0700 3.109 20 5029 9216 0.0146328 2014-05-13T13:24:35.440-0700 3.459 9125 6077 9216 0.0086723 2014-05-13T13:24:37.581-0700 5.599 25 8470 9216 0.0203820 2014-05-13T13:24:42.686-0700 10.704 44 15 9216 0.0288848 2014-05-13T13:24:48.941-0700 16.958 51 20 9216 0.0491244 2014-05-13T13:24:56.049-0700 24.066 92 26 9216 0.0525368 2014-05-13T13:25:34.368-0700 62.383 602 68 9216 0.1721173 Format 2 In some of the log files, the log files with the more verbose format, a single trace, i.e. the report of a singe garbage collection event, was more complicated than Format 1. Here is a text file with an example of a single G1GC trace in the second format. As you can see, it is quite complicated. It is nice that there is so much information available, but the level of detail can be overwhelming. I wrote this awk script (download) to summarize each trace on a single line. #!/usr/bin/env awk -f BEGIN { printf("SecondsSinceLaunch IncrementalCount FullCount UserTime SysTime RealTime BeforeSize AfterSize TotalSize\n") } ###################### # Save count data from lines that are at the start of each G1GC trace. # Each trace starts out like this: # {Heap before GC invocations=14 (full 0): # garbage-first heap total 9437184K, used 325496K [0xfffffffd00000000, 0xffffffff40000000, 0xffffffff40000000) ###################### /{Heap.*full/{ gsub ( "\\)" , "" ); nf=split($0,a,"="); split(a[2],b," "); getline; if ( match($0, "first") ) { G1GC=1; IncrementalCount=b[1]; FullCount=substr( b[3], 1, length(b[3])-1 ); } else { G1GC=0; } } ###################### # Pull out time stamps that are in lines with this format: # 2014-05-12T14:02:06.025-0700: 94.312: [GC pause (young), 0.08870154 secs] ###################### /GC pause/ { DateTime=$1; SecondsSinceLaunch=substr($2, 1, length($2)-1); } ###################### # Heap sizes are in lines that look like this: # [ 4842M->4838M(9216M)] ###################### /\[ .*]$/ { gsub ( "\\[" , "" ); gsub ( "\ \]" , "" ); gsub ( "->" , " " ); gsub ( "\$ " , " " ); gsub ( "\ $" , " " ); split($0,a," "); if ( split(a[1],b,"M") > 1 ) {BeforeSize=b[1]*1024;} if ( split(a[1],b,"K") > 1 ) {BeforeSize=b[1];} if ( split(a[2],b,"M") > 1 ) {AfterSize=b[1]*1024;} if ( split(a[2],b,"K") > 1 ) {AfterSize=b[1];} if ( split(a[3],b,"M") > 1 ) {TotalSize=b[1]*1024;} if ( split(a[3],b,"K") > 1 ) {TotalSize=b[1];} } ###################### # Emit an output line when you find input that looks like this: # [Times: user=1.41 sys=0.08, real=0.24 secs] ###################### /\[Times/ { if (G1GC==1) { gsub ( "," , "" ); split($2,a,"="); UserTime=a[2]; split($3,a,"="); SysTime=a[2]; split($4,a,"="); RealTime=a[2]; print DateTime,SecondsSinceLaunch,IncrementalCount,FullCount,UserTime,SysTime,RealTime,BeforeSize,AfterSize,TotalSize; G1GC=0; } } The resulting summary is about 25X smaller that the original file, but still difficult for a human to digest. SecondsSinceLaunch IncrementalCount FullCount UserTime SysTime RealTime BeforeSize AfterSize TotalSize ... 2014-05-12T18:36:34.669-0700: 3985.744 561 0 0.57 0.06 0.16 1724416 1720320 9437184 2014-05-12T18:36:34.839-0700: 3985.914 562 0 0.51 0.06 0.19 1724416 1720320 9437184 2014-05-12T18:36:35.069-0700: 3986.144 563 0 0.60 0.04 0.27 1724416 1721344 9437184 2014-05-12T18:36:35.354-0700: 3986.429 564 0 0.33 0.04 0.09 1725440 1722368 9437184 2014-05-12T18:36:35.545-0700: 3986.620 565 0 0.58 0.04 0.17 1726464 1722368 9437184 2014-05-12T18:36:35.726-0700: 3986.801 566 0 0.43 0.05 0.12 1726464 1722368 9437184 2014-05-12T18:36:35.856-0700: 3986.930 567 0 0.30 0.04 0.07 1726464 1723392 9437184 2014-05-12T18:36:35.947-0700: 3987.023 568 0 0.61 0.04 0.26 1727488 1723392 9437184 2014-05-12T18:36:36.228-0700: 3987.302 569 0 0.46 0.04 0.16 1731584 1724416 9437184 Reading the Data into R Once the GC log data had been cleansed, either by processing the first format with the shell script, or by processing the second format with the awk script, it was easy to read the data into R. g1gc.df = read.csv("summary.txt", row.names = NULL, stringsAsFactors=FALSE,sep="") str(g1gc.df) ## 'data.frame': 8307 obs. of 10 variables: ## $ row.names : chr "2014-05-12T14:00:32.868-0700:" "2014-05-12T14:00:33.179-0700:" "2014-05-12T14:00:33.677-0700:" "2014-05-12T14:00:35.538-0700:" ... ## $ SecondsSinceLaunch: num 1.16 1.47 1.97 3.83 6.1 ... ## $ IncrementalCount : int 0 1 2 3 4 5 6 7 8 9 ... ## $ FullCount : int 0 0 0 0 0 0 0 0 0 0 ... ## $ UserTime : num 0.11 0.05 0.04 0.21 0.08 0.26 0.31 0.33 0.34 0.56 ... ## $ SysTime : num 0.04 0.01 0.01 0.05 0.01 0.06 0.07 0.06 0.07 0.09 ... ## $ RealTime : num 0.02 0.02 0.01 0.04 0.02 0.04 0.05 0.04 0.04 0.06 ... ## $ BeforeSize : int 8192 5496 5768 22528 24576 43008 34816 53248 55296 93184 ... ## $ AfterSize : int 1400 1672 2557 4907 7072 14336 16384 18432 19456 21504 ... ## $ TotalSize : int 9437184 9437184 9437184 9437184 9437184 9437184 9437184 9437184 9437184 9437184 ... head(g1gc.df) ## row.names SecondsSinceLaunch IncrementalCount ## 1 2014-05-12T14:00:32.868-0700: 1.161 0 ## 2 2014-05-12T14:00:33.179-0700: 1.472 1 ## 3 2014-05-12T14:00:33.677-0700: 1.969 2 ## 4 2014-05-12T14:00:35.538-0700: 3.830 3 ## 5 2014-05-12T14:00:37.811-0700: 6.103 4 ## 6 2014-05-12T14:00:41.428-0700: 9.720 5 ## FullCount UserTime SysTime RealTime BeforeSize AfterSize TotalSize ## 1 0 0.11 0.04 0.02 8192 1400 9437184 ## 2 0 0.05 0.01 0.02 5496 1672 9437184 ## 3 0 0.04 0.01 0.01 5768 2557 9437184 ## 4 0 0.21 0.05 0.04 22528 4907 9437184 ## 5 0 0.08 0.01 0.02 24576 7072 9437184 ## 6 0 0.26 0.06 0.04 43008 14336 9437184 Basic Statistics Once the data has been read into R, simple statistics are very easy to generate. All of the numbers from high school statistics are available via simple commands. For example, generate a summary of every column: summary(g1gc.df) ## row.names SecondsSinceLaunch IncrementalCount FullCount ## Length:8307 Min. : 1 Min. : 0 Min. : 0.0 ## Class :character 1st Qu.: 9977 1st Qu.:2048 1st Qu.: 0.0 ## Mode :character Median :12855 Median :4136 Median : 12.0 ## Mean :12527 Mean :4156 Mean : 31.6 ## 3rd Qu.:15758 3rd Qu.:6262 3rd Qu.: 61.0 ## Max. :55484 Max. :8391 Max. :113.0 ## UserTime SysTime RealTime BeforeSize ## Min. :0.040 Min. :0.0000 Min. : 0.0 Min. : 5476 ## 1st Qu.:0.470 1st Qu.:0.0300 1st Qu.: 0.1 1st Qu.:5137920 ## Median :0.620 Median :0.0300 Median : 0.1 Median :6574080 ## Mean :0.751 Mean :0.0355 Mean : 0.3 Mean :5841855 ## 3rd Qu.:0.920 3rd Qu.:0.0400 3rd Qu.: 0.2 3rd Qu.:7084032 ## Max. :3.370 Max. :1.5600 Max. :488.1 Max. :8696832 ## AfterSize TotalSize ## Min. : 1380 Min. :9437184 ## 1st Qu.:5002752 1st Qu.:9437184 ## Median :6559744 Median :9437184 ## Mean :5785454 Mean :9437184 ## 3rd Qu.:7054336 3rd Qu.:9437184 ## Max. :8482816 Max. :9437184 Q: What is the total amount of User CPU time spent in garbage collection? sum(g1gc.df$UserTime) ## [1] 6236 As you can see, less than two hours of CPU time was spent in garbage collection. Is that too much? To find the percentage of time spent in garbage collection, divide the number above by total_elapsed_time*CPU_count. In this case, there are a lot of CPU’s and it turns out the the overall amount of CPU time spent in garbage collection isn’t a problem when viewed in isolation. When calculating rates, i.e. events per unit time, you need to ask yourself if the rate is homogenous across the time period in the log file. Does the log file include spikes of high activity that should be separately analyzed? Averaging in data from nights and weekends with data from business hours may alias problems. If you have a reason to suspect that the garbage collection rates include peaks and valleys that need independent analysis, see the “Time Series” section, below. Q: How much garbage is collected on each pass? The amount of heap space that is recovered per GC pass is surprisingly low: At least one collection didn’t recover any data. (“Min.=0”) 25% of the passes recovered 3MB or less. (“1st Qu.=3072”) Half of the GC passes recovered 4MB or less. (“Median=4096”) The average amount recovered was 56MB. (“Mean=56390”) 75% of the passes recovered 36MB or less. (“3rd Qu.=36860”) At least one pass recovered 2GB. (“Max.=2121000”) g1gc.df$Delta = g1gc.df$BeforeSize - g1gc.df$AfterSize summary(g1gc.df$Delta) ## Min. 1st Qu. Median Mean 3rd Qu. Max. ## 0 3070 4100 56400 36900 2120000 Q: What is the maximum User CPU time for a single collection? The worst garbage collection (“Max.”) is many standard deviations away from the mean. The data appears to be right skewed. summary(g1gc.df$UserTime) ## Min. 1st Qu. Median Mean 3rd Qu. Max. ## 0.040 0.470 0.620 0.751 0.920 3.370 sd(g1gc.df$UserTime) ## [1] 0.3966 Basic Graphics Once the data is in R, it is trivial to plot the data with formats including dot plots, line charts, bar charts (simple, stacked, grouped), pie charts, boxplots, scatter plots histograms, and kernel density plots. Histogram of User CPU Time per Collection I don't think that this graph requires any explanation. hist(g1gc.df$UserTime, main="User CPU Time per Collection", xlab="Seconds", ylab="Frequency") Box plot to identify outliers When the initial data is viewed with a box plot, you can see the one crazy outlier in the real time per GC. Save this data point for future analysis and drop the outlier so that it’s not throwing off our statistics. Now the box plot shows many outliers, which will be examined later, using times series analysis. Notice that the scale of the x-axis changes drastically once the crazy outlier is removed. par(mfrow=c(2,1)) boxplot(g1gc.df$UserTime,g1gc.df$SysTime,g1gc.df$RealTime, main="Box Plot of Time per GC\n(dominated by a crazy outlier)", names=c("usr","sys","elapsed"), xlab="Seconds per GC", ylab="Time (Seconds)", horizontal = TRUE, outcol="red") crazy.outlier.df=g1gc.df[g1gc.df$RealTime > 400,] g1gc.df=g1gc.df[g1gc.df$RealTime < 400,] boxplot(g1gc.df$UserTime,g1gc.df$SysTime,g1gc.df$RealTime, main="Box Plot of Time per GC\n(crazy outlier excluded)", names=c("usr","sys","elapsed"), xlab="Seconds per GC", ylab="Time (Seconds)", horizontal = TRUE, outcol="red") box(which = "outer", lty = "solid") Here is the crazy outlier for future analysis: crazy.outlier.df ## row.names SecondsSinceLaunch IncrementalCount ## 8233 2014-05-12T23:15:43.903-0700: 20741 8316 ## FullCount UserTime SysTime RealTime BeforeSize AfterSize TotalSize ## 8233 112 0.55 0.42 488.1 8381440 8235008 9437184 ## Delta ## 8233 146432 R Time Series Data To analyze the garbage collection as a time series, I’ll use Z’s Ordered Observations (zoo). “zoo is the creator for an S3 class of indexed totally ordered observations which includes irregular time series.” require(zoo) ## Loading required package: zoo ## ## Attaching package: 'zoo' ## ## The following objects are masked from 'package:base': ## ## as.Date, as.Date.numeric head(g1gc.df[,1]) ## [1] "2014-05-12T14:00:32.868-0700:" "2014-05-12T14:00:33.179-0700:" ## [3] "2014-05-12T14:00:33.677-0700:" "2014-05-12T14:00:35.538-0700:" ## [5] "2014-05-12T14:00:37.811-0700:" "2014-05-12T14:00:41.428-0700:" options("digits.secs"=3) times=as.POSIXct( g1gc.df[,1], format="%Y-%m-%dT%H:%M:%OS%z:") g1gc.z = zoo(g1gc.df[,-c(1)], order.by=times) head(g1gc.z) ## SecondsSinceLaunch IncrementalCount FullCount ## 2014-05-12 17:00:32.868 1.161 0 0 ## 2014-05-12 17:00:33.178 1.472 1 0 ## 2014-05-12 17:00:33.677 1.969 2 0 ## 2014-05-12 17:00:35.538 3.830 3 0 ## 2014-05-12 17:00:37.811 6.103 4 0 ## 2014-05-12 17:00:41.427 9.720 5 0 ## UserTime SysTime RealTime BeforeSize AfterSize ## 2014-05-12 17:00:32.868 0.11 0.04 0.02 8192 1400 ## 2014-05-12 17:00:33.178 0.05 0.01 0.02 5496 1672 ## 2014-05-12 17:00:33.677 0.04 0.01 0.01 5768 2557 ## 2014-05-12 17:00:35.538 0.21 0.05 0.04 22528 4907 ## 2014-05-12 17:00:37.811 0.08 0.01 0.02 24576 7072 ## 2014-05-12 17:00:41.427 0.26 0.06 0.04 43008 14336 ## TotalSize Delta ## 2014-05-12 17:00:32.868 9437184 6792 ## 2014-05-12 17:00:33.178 9437184 3824 ## 2014-05-12 17:00:33.677 9437184 3211 ## 2014-05-12 17:00:35.538 9437184 17621 ## 2014-05-12 17:00:37.811 9437184 17504 ## 2014-05-12 17:00:41.427 9437184 28672 Example of Two Benchmark Runs in One Log File The data in the following graph is from a different log file, not the one of primary interest to this article. I’m including this image because it is an example of idle periods followed by busy periods. It would be uninteresting to average the rate of garbage collection over the entire log file period. More interesting would be the rate of garbage collect in the two busy periods. Are they the same or different? Your production data may be similar, for example, bursts when employees return from lunch and idle times on weekend evenings, etc. Once the data is in an R Time Series, you can analyze isolated time windows. Clipping the Time Series data Flashing back to our test case… Viewing the data as a time series is interesting. You can see that the work intensive time period is between 9:00 PM and 3:00 AM. Lets clip the data to the interesting period: par(mfrow=c(2,1)) plot(g1gc.z$UserTime, type="h", main="User Time per GC\nTime: Complete Log File", xlab="Time of Day", ylab="CPU Seconds per GC", col="#1b9e77") clipped.g1gc.z=window(g1gc.z, start=as.POSIXct("2014-05-12 21:00:00"), end=as.POSIXct("2014-05-13 03:00:00")) plot(clipped.g1gc.z$UserTime, type="h", main="User Time per GC\nTime: Limited to Benchmark Execution", xlab="Time of Day", ylab="CPU Seconds per GC", col="#1b9e77") box(which = "outer", lty = "solid") Cumulative Incremental and Full GC count Here is the cumulative incremental and full GC count. When the line is very steep, it indicates that the GCs are repeating very quickly. Notice that the scale on the Y axis is different for full vs. incremental. plot(clipped.g1gc.z[,c(2:3)], main="Cumulative Incremental and Full GC count", xlab="Time of Day", col="#1b9e77") GC Analysis of Benchmark Execution using Time Series data In the following series of 3 graphs: The “After Size” show the amount of heap space in use after each garbage collection. Many Java objects are still referenced, i.e. alive, during each garbage collection. This may indicate that the application has a memory leak, or may indicate that the application has a very large memory footprint. Typically, an application's memory footprint plateau's in the early stage of execution. One would expect this graph to have a flat top. The steep decline in the heap space may indicate that the application crashed after 2:00. The second graph shows that the outliers in real execution time, discussed above, occur near 2:00. when the Java heap seems to be quite full. The third graph shows that Full GCs are infrequent during the first few hours of execution. The rate of Full GC's, (the slope of the cummulative Full GC line), changes near midnight. plot(clipped.g1gc.z[,c("AfterSize","RealTime","FullCount")], xlab="Time of Day", col=c("#1b9e77","red","#1b9e77")) GC Analysis of heap recovered Each GC trace includes the amount of heap space in use before and after the individual GC event. During garbage coolection, unreferenced objects are identified, the space holding the unreferenced objects is freed, and thus, the difference in before and after usage indicates how much space has been freed. The following box plot and bar chart both demonstrate the same point - the amount of heap space freed per garbage colloection is surprisingly low. par(mfrow=c(2,1)) boxplot(as.vector(clipped.g1gc.z$Delta), main="Amount of Heap Recovered per GC Pass", xlab="Size in KB", horizontal = TRUE, col="red") hist(as.vector(clipped.g1gc.z$Delta), main="Amount of Heap Recovered per GC Pass", xlab="Size in KB", breaks=100, col="red") box(which = "outer", lty = "solid") This graph is the most interesting. The dark blue area shows how much heap is occupied by referenced Java objects. This represents memory that holds live data. The red fringe at the top shows how much data was recovered after each garbage collection. barplot(clipped.g1gc.z[,c("AfterSize","Delta")], col=c("#7570b3","#e7298a"), xlab="Time of Day", border=NA) legend("topleft", c("Live Objects","Heap Recovered on GC"), fill=c("#7570b3","#e7298a")) box(which = "outer", lty = "solid") When I discuss the data in the log files with the customer, I will ask for an explaination for the large amount of referenced data resident in the Java heap. There are two are posibilities: There is a memory leak and the amount of space required to hold referenced objects will continue to grow, limited only by the maximum heap size. After the maximum heap size is reached, the JVM will throw an “Out of Memory” exception every time that the application tries to allocate a new object. If this is the case, the aplication needs to be debugged to identify why old objects are referenced when they are no longer needed. The application has a legitimate requirement to keep a large amount of data in memory. The customer may want to further increase the maximum heap size. Another possible solution would be to partition the application across multiple cluster nodes, where each node has responsibility for managing a unique subset of the data. Conclusion In conclusion, R is a very powerful tool for the analysis of Java garbage collection log files. The primary difficulty is data cleansing so that information can be read into an R data frame. Once the data has been read into R, a rich set of tools may be used for thorough evaluation.

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Solaris OpenStack Horizon customizations

- by GirishMoodalbail-Oracle

In Oracle Solaris OpenStack Havana, we have customized the Horizon BUI by modifying existing dashboard and panels to reflect only those features that we support. The modification mostly involves: -- disabling an widget (checkbox, button, textarea, and so on) -- removal of a tab from a panel -- removal of options from pull-down menus The following table lists the customizations that we have made. |-----------------------------+-----------------------------------------------------| | Where | What | |-----------------------------+-----------------------------------------------------| | Project => Instances => | Post-Creation tab is removed. | | Launch Instance | | | | | | Project => Instances => | Security Groups tab is removed. | | Actions => Edit Instance | | | | | | Project => Instances => | Console tab is removed. | | Instance Name | | | | | | Project => Instances => | Following actions Console, Edit Security Groups, | | Actions | Pause Instance, Suspend Instance, Resize Instance, | | | Rebuild Instance, and Migrate Instance are removed. | | | | | Project => | Security Groups tab is removed. | | Access and Security | | | | | | Project => | Create Volume action is removed. | | Images and Snapshots => | | | Images => Actions | | | | | | Project => Networks => | Admin State is disabled and its value is always | | Create Network | true. | | | | | Project => Networks => | Disable Gateway checkbox is disabled, and its | | Create Network => | value is always false. | | Subnet | | | | | | Project => Networks => | Allocation Pools and Host Routes text area are | | Create Network => | disabled. | | Subnet Detail | | | | | | Project => Networks => | Edit Subnet action is removed. | | Network Name => Subnet => | | | Actions | | | | | | Project => Networks => | Edit Port action is removed. | | Network Name => Ports => | | | Actions | | | | | | Admin => Instnaces => | Following actions Console, Pause Instance, | | Actions | Suspend Instance, and Migrate Instance are removed. | | | | | Admin => Networks => | Edit Network action is removed | | Actions | | | | | | Admin => Networks => | Edit Subnet action is removed | | Subnets => Actions | | | | | | Admin => Networks => | Edit Port action is removed | | Ports => Actions | | | | | | Admin => Networks => | Admin State and Shared check box are disabled. | | Create Network | Network's Admin State is always true, and Shared is | | | always false. | | | | | Admin => Networks => | Admin State check box is disabled and its value | | Network Name => Create Port | is always true. | |-----------------------------+-----------------------------------------------------|

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Compiling OpenCV in Android NDK

- by evident

PLEASE SEE THE ADDITIONS AT THE BOTTOM! The first problem is solved in Linux, not under Windows and Cygwin yet, but there is a new problem. Please see below! I am currently trying to compile OpenCV for Android NDK so that I can use it in my apps. For this I tried to follow this guide: http://www.stanford.edu/~zxwang/android_opencv.html But when compiling the downloaded stuff with ndk-build I get this error: $ /cygdrive/u/flori/workspace/android-ndk-r5b/ndk-build Compile++ thumb : opencv <= cvjni.cpp Compile++ thumb : cxcore <= cxalloc.cpp Compile++ thumb : cxcore <= cxarithm.cpp Compile++ thumb : cxcore <= cxarray.cpp Compile++ thumb : cxcore <= cxcmp.cpp Compile++ thumb : cxcore <= cxconvert.cpp Compile++ thumb : cxcore <= cxcopy.cpp Compile++ thumb : cxcore <= cxdatastructs.cpp Compile++ thumb : cxcore <= cxdrawing.cpp Compile++ thumb : cxcore <= cxdxt.cpp Compile++ thumb : cxcore <= cxerror.cpp Compile++ thumb : cxcore <= cximage.cpp Compile++ thumb : cxcore <= cxjacobieigens.cpp Compile++ thumb : cxcore <= cxlogic.cpp Compile++ thumb : cxcore <= cxlut.cpp Compile++ thumb : cxcore <= cxmathfuncs.cpp Compile++ thumb : cxcore <= cxmatmul.cpp Compile++ thumb : cxcore <= cxmatrix.cpp Compile++ thumb : cxcore <= cxmean.cpp Compile++ thumb : cxcore <= cxmeansdv.cpp Compile++ thumb : cxcore <= cxminmaxloc.cpp Compile++ thumb : cxcore <= cxnorm.cpp Compile++ thumb : cxcore <= cxouttext.cpp Compile++ thumb : cxcore <= cxpersistence.cpp Compile++ thumb : cxcore <= cxprecomp.cpp Compile++ thumb : cxcore <= cxrand.cpp Compile++ thumb : cxcore <= cxsumpixels.cpp Compile++ thumb : cxcore <= cxsvd.cpp Compile++ thumb : cxcore <= cxswitcher.cpp Compile++ thumb : cxcore <= cxtables.cpp Compile++ thumb : cxcore <= cxutils.cpp StaticLibrary : libstdc++.a StaticLibrary : libcxcore.a Compile++ thumb : cv <= cvaccum.cpp Compile++ thumb : cv <= cvadapthresh.cpp Compile++ thumb : cv <= cvapprox.cpp Compile++ thumb : cv <= cvcalccontrasthistogram.cpp Compile++ thumb : cv <= cvcalcimagehomography.cpp Compile++ thumb : cv <= cvcalibinit.cpp Compile++ thumb : cv <= cvcalibration.cpp Compile++ thumb : cv <= cvcamshift.cpp Compile++ thumb : cv <= cvcanny.cpp Compile++ thumb : cv <= cvcolor.cpp Compile++ thumb : cv <= cvcondens.cpp Compile++ thumb : cv <= cvcontours.cpp Compile++ thumb : cv <= cvcontourtree.cpp Compile++ thumb : cv <= cvconvhull.cpp Compile++ thumb : cv <= cvcorner.cpp Compile++ thumb : cv <= cvcornersubpix.cpp Compile++ thumb : cv <= cvderiv.cpp Compile++ thumb : cv <= cvdistransform.cpp Compile++ thumb : cv <= cvdominants.cpp Compile++ thumb : cv <= cvemd.cpp Compile++ thumb : cv <= cvfeatureselect.cpp Compile++ thumb : cv <= cvfilter.cpp Compile++ thumb : cv <= cvfloodfill.cpp Compile++ thumb : cv <= cvfundam.cpp Compile++ thumb : cv <= cvgeometry.cpp Compile++ thumb : cv <= cvhaar.cpp Compile++ thumb : cv <= cvhistogram.cpp Compile++ thumb : cv <= cvhough.cpp Compile++ thumb : cv <= cvimgwarp.cpp Compile++ thumb : cv <= cvinpaint.cpp Compile++ thumb : cv <= cvkalman.cpp Compile++ thumb : cv <= cvlinefit.cpp Compile++ thumb : cv <= cvlkpyramid.cpp Compile++ thumb : cv <= cvmatchcontours.cpp Compile++ thumb : cv <= cvmoments.cpp Compile++ thumb : cv <= cvmorph.cpp Compile++ thumb : cv <= cvmotempl.cpp Compile++ thumb : cv <= cvoptflowbm.cpp Compile++ thumb : cv <= cvoptflowhs.cpp Compile++ thumb : cv <= cvoptflowlk.cpp Compile++ thumb : cv <= cvpgh.cpp Compile++ thumb : cv <= cvposit.cpp Compile++ thumb : cv <= cvprecomp.cpp Compile++ thumb : cv <= cvpyramids.cpp Compile++ thumb : cv <= cvpyrsegmentation.cpp Compile++ thumb : cv <= cvrotcalipers.cpp Compile++ thumb : cv <= cvsamplers.cpp Compile++ thumb : cv <= cvsegmentation.cpp Compile++ thumb : cv <= cvshapedescr.cpp Compile++ thumb : cv <= cvsmooth.cpp Compile++ thumb : cv <= cvsnakes.cpp Compile++ thumb : cv <= cvstereobm.cpp Compile++ thumb : cv <= cvstereogc.cpp Compile++ thumb : cv <= cvsubdivision2d.cpp Compile++ thumb : cv <= cvsumpixels.cpp Compile++ thumb : cv <= cvsurf.cpp Compile++ thumb : cv <= cvswitcher.cpp Compile++ thumb : cv <= cvtables.cpp Compile++ thumb : cv <= cvtemplmatch.cpp Compile++ thumb : cv <= cvthresh.cpp Compile++ thumb : cv <= cvundistort.cpp Compile++ thumb : cv <= cvutils.cpp StaticLibrary : libcv.a SharedLibrary : libopencv.so U:/flori/workspace/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/prebui lt/windows/bin/../lib/gcc/arm-linux-androideabi/4.4.3/../../../../arm-linux-andr oideabi/bin/ld.exe: cannot find -lcxcore collect2: ld returned 1 exit status make: *** [/cygdrive/u/flori/workspace/android/testOpenCV/obj/local/armeabi/libo pencv.so] Error 1 I am trying to compile it on a Windows system and with the newest NDK version... Does anybody have an idea what this linking error means and what I can to to have it work again? Would be great if anybody could help After getting the problem to work I found that there is another way of compiling OpenCV for Android, using the current version of OpenCV (instead of the 1.1 one from above) and the modified Android NDK from crystax, which supports STL and exceptions and therefore supports the newest OpenCV Version. All information on that can be found here: http://opencv.willowgarage.com/wiki/Android There it says to download the current svn trunk and the crystax-r4 android-ndk, as well as swig, which I did. I entered the folder, created the build directory, ran cmake and then built the static libs, which seemed to work. At least it successfully ran the make-command without errors. I now wanted to build the shared libraries so I entered the android-jni folder and ran 'make' again, but got this error: % make -j4 OPENCV_CONFIG = ../build/android-opencv.mk make clean-swig &&\ mkdir -p jni/gen &&\ mkdir -p src/com/opencv/jni &&\ swig -java -c++ -package "com.opencv.jni" \ -outdir src/com/opencv/jni \ -o jni/gen/android_cv_wrap.cpp jni/android-cv.i OPENCV_CONFIG = ../build/android-opencv.mk make[1]: Entering directory `/home/florian/android-opencv-willowgarage/android/android-jni' make[1]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule. rm -f jni/gen/android_cv_wrap.cpp make[1]: Leaving directory `/home/florian/android-opencv-willowgarage/android/android-jni' /home/florian/android-ndk-r4-crystax/ndk-build OPENCV_CONFIG=../build/android-opencv.mk \ PROJECT_PATH= ARM_TARGETS="armeabi armeabi-v7a" V= /home/florian/android-ndk-r4-crystax/ndk-build OPENCV_CONFIG=../build/android-opencv.mk \ PROJECT_PATH= ARM_TARGETS="armeabi armeabi-v7a" V= make[1]: Entering directory `/home/florian/android-opencv-willowgarage/android/android-jni' /home/florian/android-opencv-willowgarage/android/android-jni/jni/Android.mk:10: ../build/android-opencv.mk: No such file or directory make[1]: Entering directory `/home/florian/android-opencv-willowgarage/android/android-jni' /home/florian/android-opencv-willowgarage/android/android-jni/jni/Android.mk:10: ../build/android-opencv.mk: No such file or directory /home/florian/android-opencv-willowgarage/android/android-jni/jni/Android.mk:10: ../build/android-opencv.mk: No such file or directory make[1]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule. /home/florian/android-opencv-willowgarage/android/android-jni/jni/Android.mk:10: ../build/android-opencv.mk: No such file or directory make[1]: *** No rule to make target `../build/android-opencv.mk'. Stop. make[1]: Leaving directory `/home/florian/android-opencv-willowgarage/android/android-jni' make: *** [libs/armeabi/libandroid-opencv.so] Error 2 make: *** Waiting for unfinished jobs.... make[1]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule. make[1]: *** No rule to make target `../build/android-opencv.mk'. Stop. make[1]: Leaving directory `/home/florian/android-opencv-willowgarage/android/android-jni' make: *** [libs/armeabi-v7a/libandroid-opencv.so] Error 2 Does anybody have an idea what this means and what I can do to build the shared libraries? ... Ok after having a look at the error message it came to me that it seems to have something missing in the build directory... but there wasn't even a build directory in the android folder so I created one, ran 'cmake' in there and 'make' again but get this error: Compile thumb : opencv_lapack <= /home/florian/android-opencv-willowgarage/3rdparty/lapack/sgetrf.c Compile thumb : opencv_lapack <= /home/florian/android-opencv-willowgarage/3rdparty/lapack/scopy.c Compile++ thumb: opencv_core <= /home/florian/android-opencv-willowgarage/modules/core/src/matrix.cpp cc1plus: error: /home/florian/android-opencv-willowgarage/android/../modules/index.rst/include: Not a directory make[3]: *** [/home/florian/android-opencv-willowgarage/android/build/obj/local/armeabi/objs/opencv_core/src/matrix.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [android-opencv] Error 2 make[1]: *** [CMakeFiles/ndk.dir/all] Error 2 make: *** [all] Error 2 Anybody know what this means?

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Java Errors with jRuby on Rails on Google App Engine

- by John Wang

I followed all of the instructions so far from: http://code.google.com/p/appengine-jruby/wiki/RunningRails and http://gist.github.com/268192 Currently, I'm just trying to get to hello world. I'm getting these errors when I just run the dev_appserver.rb 238:hello-world jwang392$ dev_appserver.rb . => Booting DevAppServer => Press Ctrl-C to shutdown server => Generating configuration files 2010-04-08 09:16:51.961 java[411:1707] [Java CocoaComponent compatibility mode]: Enabled 2010-04-08 09:16:51.964 java[411:1707] [Java CocoaComponent compatibility mode]: Setting timeout for SWT to 0.100000 Apr 8, 2010 7:17:05 PM com.google.appengine.tools.development.ApiProxyLocalImpl log SEVERE: [1270754225387000] javax.servlet.ServletContext log: Warning: error application could not be initialized org.jruby.rack.RackInitializationException: no such file to load -- time from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25:in `boot!' from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10 from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1:in `load' from <script>:1 at org.jruby.rack.DefaultRackApplicationFactory $4.init(DefaultRackApplicationFactory.java:169) at org.jruby.rack.DefaultRackApplicationFactory.newErrorApplication(DefaultRac kApplicationFactory.java: 118) at org.jruby.rack.DefaultRackApplicationFactory.init(DefaultRackApplicationFac tory.java: 37) at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 26) at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletCon textListener.java: 40) at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java: 530) at org.mortbay.jetty.servlet.Context.startContext(Context.java:135) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1218) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 500) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java: 448) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.jetty.Server.doStart(Server.java:217) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at com.google.appengine.tools.development.JettyContainerService.startContainer (JettyContainerService.java: 188) at com.google.appengine.tools.development.AbstractContainerService.startup(Abs tractContainerService.java: 147) at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerI mpl.java: 219) at com.google.appengine.tools.development.DevAppServerMain $StartAction.apply(DevAppServerMain.java:162) at com.google.appengine.tools.util.Parser $ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServer Main.java: 113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMa in.java: 89) Caused by: org.jruby.exceptions.RaiseException: no such file to load -- time at (unknown).new(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at Kernel.require(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at JRuby::Rack::Booter.boot!(file:/Users/jwang392/hello-world/WEB-INF/ lib/jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at (unknown).(unknown)(file:/Users/jwang392/Dhello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at Kernel.load(<script>:1) at (unknown).(unknown)(:1) Apr 8, 2010 7:17:05 PM com.google.appengine.tools.development.ApiProxyLocalImpl log SEVERE: [1270754225913000] javax.servlet.ServletContext log: unable to create shared application instance org.jruby.rack.RackInitializationException: no such file to load -- time from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25:in `boot!' from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10 from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1:in `load' from <script>:1 at org.jruby.rack.DefaultRackApplicationFactory $4.init(DefaultRackApplicationFactory.java:169) at org.jruby.rack.DefaultRackApplicationFactory.getApplication(DefaultRackAppl icationFactory.java: 51) at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 27) at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletCon textListener.java: 40) at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java: 530) at org.mortbay.jetty.servlet.Context.startContext(Context.java:135) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1218) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 500) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java: 448) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.jetty.Server.doStart(Server.java:217) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at com.google.appengine.tools.development.JettyContainerService.startContainer (JettyContainerService.java: 188) at com.google.appengine.tools.development.AbstractContainerService.startup(Abs tractContainerService.java: 147) at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerI mpl.java: 219) at com.google.appengine.tools.development.DevAppServerMain $StartAction.apply(DevAppServerMain.java:162) at com.google.appengine.tools.util.Parser $ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServer Main.java: 113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMa in.java: 89) Caused by: org.jruby.exceptions.RaiseException: no such file to load -- time at (unknown).new(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at Kernel.require(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at JRuby::Rack::Booter.boot!(file:/Users/jwang392/hello-world/WEB-INF/ lib/jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at Kernel.load(<script>:1) at (unknown).(unknown)(:1) Apr 8, 2010 7:17:05 PM com.google.appengine.tools.development.ApiProxyLocalImpl log SEVERE: [1270754225915000] javax.servlet.ServletContext log: Error: application initialization failed org.jruby.rack.RackInitializationException: unable to create shared application instance at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 39) at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletCon textListener.java: 40) at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java: 530) at org.mortbay.jetty.servlet.Context.startContext(Context.java:135) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1218) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 500) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java: 448) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java: 117) at org.mortbay.jetty.Server.doStart(Server.java:217) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 40) at com.google.appengine.tools.development.JettyContainerService.startContainer (JettyContainerService.java: 188) at com.google.appengine.tools.development.AbstractContainerService.startup(Abs tractContainerService.java: 147) at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerI mpl.java: 219) at com.google.appengine.tools.development.DevAppServerMain $StartAction.apply(DevAppServerMain.java:162) at com.google.appengine.tools.util.Parser $ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServer Main.java: 113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMa in.java: 89) Caused by: org.jruby.rack.RackInitializationException: no such file to load -- time from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25:in `boot!' from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10 from file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1:in `load' from <script>:1 at org.jruby.rack.DefaultRackApplicationFactory $4.init(DefaultRackApplicationFactory.java:169) at org.jruby.rack.DefaultRackApplicationFactory.getApplication(DefaultRackAppl icationFactory.java: 51) at org.jruby.rack.SharedRackApplicationFactory.init(SharedRackApplicationFacto ry.java: 27) ... 19 more Caused by: org.jruby.exceptions.RaiseException: no such file to load -- time at (unknown).new(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at Kernel.require(file:/Users/jwang392/hello-world/WEB-INF/lib/jruby- rack-0.9.6.jar!/jruby/rack/booter.rb:25) at JRuby::Rack::Booter.boot!(file:/Users/jwang392/hello-world/WEB-INF/ lib/jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:10) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at (unknown).(unknown)(file:/Users/jwang392/hello-world/WEB-INF/lib/ jruby-rack-0.9.6.jar!/jruby/rack/boot/rack.rb:1) at Kernel.load(<script>:1) at (unknown).(unknown)(:1) The server is running at http://localhost:8080/ I'm at a loss at what step I may have missed. I checked my ruby version (1.8.7) and rails version (2.3.5), gem version (1.3.6) and google-appengine-0.0.10.1 ran: sudo gem install google-appengine curl -O http://appengine-jruby.googlecode.com/hg/demos/rails2/rails2_appengine.rb ruby rails2_appengine.rb sudo gem install rails_dm_datastore sudo gem install activerecord-nulldb-adapter put this in my config.ru file: run lambda { |env| Rack::Response.new('Hello World!').finish } and finally ran $ dev_appserver.rb .

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MonoTouch App Crashes When Returning From MFMailComposeViewController

- by Richard Khan

My MonoTouch Version Info: Release ID: 20401003 Git revision: 2f1746af36f421d262dcd2b0542ce86b12158f02 Build date: 2010-12-23 23:13:38+0000 The MFMailComposeViewController is displayed and works correctly as a dialog using the following code: if (MFMailComposeViewController.CanSendMail) { MFMailComposeViewController mail; mail = new MFMailComposeViewController (); mail.SetSubject ("Subject Test"); mail.SetMessageBody ("Body Test", false); mail.Finished += HandleMailFinished; this.navigationController.PresentModalViewController (mail, true); } else { new UIAlertView ("Mail Failed", "Mail Failed", null, "OK", null).Show (); } However, once the user selects Cancel | Delete Draft or Cancel | Save Draft or Send, the App throws a run-time error like the following: Stacktrace: at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <0x00004 at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <0x00004 at MonoTouch.UIKit.UIApplication.Main (string[],string,string) [0x00038] in /Users/plasma/Source/iphone/monotouch/UIKit/UIApplication.cs:26 at MonoTouch.UIKit.UIApplication.Main (string[]) [0x00000] in /Users/plasma/Source/iphone/monotouch/UIKit/UIApplication.cs:31 at MailDialog.Application.Main (string[]) [0x00000] in /Users/rrkhan/Projects/Sandbox/MailDialog/Main.cs:15 at (wrapper runtime-invoke) .runtime_invoke_void_object (object,intptr,intptr,intptr) Native stacktrace: 0 MailDialog 0x000be66f mono_handle_native_sigsegv + 343 1 MailDialog 0x0000e43e mono_sigsegv_signal_handler + 313 2 libSystem.B.dylib 0x903e946b _sigtramp + 43 3 ??? 0xffffffff 0x0 + 4294967295 4 MessageUI 0x01a9f6b7 -[MFMailComposeController _close] + 284 5 UIKit 0x01f682f1 -[UIActionSheet(Private) _buttonClicked:] + 258 6 UIKit 0x01be1a6e -[UIApplication sendAction:to:from:forEvent:] + 119 7 UIKit 0x01c701b5 -[UIControl sendAction:to:forEvent:] + 67 8 UIKit 0x01c72647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527 9 UIKit 0x01c711f4 -[UIControl touchesEnded:withEvent:] + 458 10 UIKit 0x01c060d1 -[UIWindow _sendTouchesForEvent:] + 567 11 UIKit 0x01be737a -[UIApplication sendEvent:] + 447 12 UIKit 0x01bec732 _UIApplicationHandleEvent + 7576 13 GraphicsServices 0x03eb7a36 PurpleEventCallback + 1550 14 CoreFoundation 0x00df9064 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 52 15 CoreFoundation 0x00d596f7 __CFRunLoopDoSource1 + 215 16 CoreFoundation 0x00d56983 __CFRunLoopRun + 979 17 CoreFoundation 0x00d56240 CFRunLoopRunSpecific + 208 18 CoreFoundation 0x00d56161 CFRunLoopRunInMode + 97 19 GraphicsServices 0x03eb6268 GSEventRunModal + 217 20 GraphicsServices 0x03eb632d GSEventRun + 115 21 UIKit 0x01bf042e UIApplicationMain + 1160 22 ??? 0x0a1e4bd9 0x0 + 169757657 23 ??? 0x0a1e4b12 0x0 + 169757458 24 ??? 0x0a1e4515 0x0 + 169755925 25 ??? 0x0a1e4451 0x0 + 169755729 26 ??? 0x0a1e44ac 0x0 + 169755820 27 MailDialog 0x0000e202 mono_jit_runtime_invoke + 1360 28 MailDialog 0x001c92af mono_runtime_invoke + 137 29 MailDialog 0x001caf6b mono_runtime_exec_main + 714 30 MailDialog 0x001ca891 mono_runtime_run_main + 812 31 MailDialog 0x00094fe8 mono_jit_exec + 200 32 MailDialog 0x0027cf05 main + 3494 33 MailDialog 0x00002ca1 _start + 208 34 MailDialog 0x00002bd0 start + 40 Debug info from gdb: warning: Could not find object file "/var/folders/Ny/NyElTwhDGD8kZMqIEeLGXE+++TI/-Tmp-//cc6F1tBs.o" - no debug information available for "template.m". warning: .o file "/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(zlib-helper.x86.42.o)" more recent than executable timestamp in "/Users/rrkhan/Library/Application Support/iPhone Simulator/4.2/Applications/52AF1D24-AADA-48ED-B373-ED08E89E4985/MailDialog.app/MailDialog" warning: Could not open OSO file /Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(zlib-helper.x86.42.o) to scan for pubtypes for objfile /Users/rrkhan/Library/Application Support/iPhone Simulator/4.2/Applications/52AF1D24-AADA-48ED-B373-ED08E89E4985/MailDialog.app/MailDialog warning: .o file "/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(monotouch-glue.x86.42.o)" more recent than executable timestamp in "/Users/rrkhan/Library/Application Support/iPhone Simulator/4.2/Applications/52AF1D24-AADA-48ED-B373-ED08E89E4985/MailDialog.app/MailDialog" warning: Could not open OSO file /Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(monotouch-glue.x86.42.o) to scan for pubtypes for objfile /Users/rrkhan/Library/Application Support/iPhone Simulator/4.2/Applications/52AF1D24-AADA-48ED-B373-ED08E89E4985/MailDialog.app/MailDialog warning: .o file "/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(gc.x86.42.o)" more recent than executable timestamp in "/Users/rrkhan/Library/Application Support/iPhone Simulator/4.2/Applications/52AF1D24-AADA-48ED-B373-ED08E89E4985/MailDialog.app/MailDialog" warning: Could not open OSO file /Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(gc.x86.42.o) to scan for pubtypes for objfile /Users/rrkhan/Library/Application Support/iPhone Simulator/4.2/Applications/52AF1D24-AADA-48ED-B373-ED08E89E4985/MailDialog.app/MailDialog Error connecting stdout and stderr (127.0.0.1:10001) warning: .o file "/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(monotouch-glue.x86.42.o)" more recent than executable timestamp in "/Users/rrkhan/Library/Application Support/iPhone Simulator/4.2/Applications/52AF1D24-AADA-48ED-B373-ED08E89E4985/MailDialog.app/MailDialog" warning: Couldn't open object file '/Developer/MonoTouch/SDKs/MonoTouch.iphonesimulator4.2.sdk/usr/lib/libmonotouch.a(monotouch-glue.x86.42.o)' Attaching to process 9992. Reading symbols for shared libraries . done Reading symbols for shared libraries ....................................................................................................................... done 0x9038e459 in read$UNIX2003 () 8 0x903a8a12 in __workq_kernreturn () 7 "WebThread" 0x903830fa in mach_msg_trap () 6 0x903b10a6 in __semwait_signal () 5 0x90383136 in semaphore_wait_trap () 4 0x903830fa in mach_msg_trap () 3 0x903a8a12 in __workq_kernreturn () 2 "com.apple.libdispatch-manager" 0x903a9982 in kevent () * 1 "com.apple.main-thread" 0x9038e459 in read$UNIX2003 () Thread 8 (process 9992): 0 0x903a8a12 in __workq_kernreturn () 1 0x903a8fa8 in _pthread_wqthread () 2 0x903a8bc6 in start_wqthread () Thread 7 (process 9992): 0 0x903830fa in mach_msg_trap () 1 0x90383867 in mach_msg () 2 0x00df94a6 in __CFRunLoopServiceMachPort () 3 0x00d56874 in __CFRunLoopRun () 4 0x00d56240 in CFRunLoopRunSpecific () 5 0x00d56161 in CFRunLoopRunInMode () 6 0x04f7c423 in RunWebThread () 7 0x903b085d in _pthread_start () 8 0x903b06e2 in thread_start () Thread 6 (process 9992): 0 0x903b10a6 in __semwait_signal () 1 0x903dcee5 in nanosleep$UNIX2003 () 2 0x903dce23 in usleep$UNIX2003 () 3 0x0027714c in monotouch_pump_gc () 4 0x903b085d in _pthread_start () 5 0x903b06e2 in thread_start () Thread 5 (process 9992): 0 0x90383136 in semaphore_wait_trap () 1 0x0015ae1d in finalizer_thread (unused=0x0) at ../../../../mono/metadata/gc.c:1026 2 0x002034a3 in start_wrapper (data=0x7b16ba0) at ../../../../mono/metadata/threads.c:661 3 0x002448e2 in thread_start_routine (args=0x8037e34) at ../../../../mono/io-layer/wthreads.c:286 4 0x00274357 in GC_start_routine (arg=0x6ff7f60) at ../../../libgc/pthread_support.c:1390 5 0x903b085d in _pthread_start () 6 0x903b06e2 in thread_start () Thread 4 (process 9992): 0 0x903830fa in mach_msg_trap () 1 0x90383867 in mach_msg () 2 0x0011cc46 in mach_exception_thread (arg=0x0) at ../../../../mono/mini/mini-darwin.c:138 3 0x903b085d in _pthread_start () 4 0x903b06e2 in thread_start () Thread 3 (process 9992): 0 0x903a8a12 in __workq_kernreturn () 1 0x903a8fa8 in _pthread_wqthread () 2 0x903a8bc6 in start_wqthread () Thread 2 (process 9992): 0 0x903a9982 in kevent () 1 0x903aa09c in _dispatch_mgr_invoke () 2 0x903a9559 in _dispatch_queue_invoke () 3 0x903a92fe in _dispatch_worker_thread2 () 4 0x903a8d81 in _pthread_wqthread () 5 0x903a8bc6 in start_wqthread () Thread 1 (process 9992): 0 0x9038e459 in read$UNIX2003 () 1 0x000be81f in mono_handle_native_sigsegv (signal=11, ctx=0xbfffd238) at ../../../../mono/mini/mini-exceptions.c:1826 2 0x0000e43e in mono_sigsegv_signal_handler (_dummy=10, info=0xbfffd1f8, context=0xbfffd238) at ../../../../mono/mini/mini.c:4846 3 4 0x028d6a63 in objc_msgSend () 5 0x01ad469f in func.24012 () 6 0x01a9f6b7 in -[MFMailComposeController _close] () 7 0x01f682f1 in -[UIActionSheet(Private) _buttonClicked:] () 8 0x01be1a6e in -[UIApplication sendAction:to:from:forEvent:] () 9 0x01c701b5 in -[UIControl sendAction:to:forEvent:] () 10 0x01c72647 in -[UIControl(Internal) _sendActionsForEvents:withEvent:] () 11 0x01c711f4 in -[UIControl touchesEnded:withEvent:] () 12 0x01c060d1 in -[UIWindow _sendTouchesForEvent:] () 13 0x01be737a in -[UIApplication sendEvent:] () 14 0x01bec732 in _UIApplicationHandleEvent () 15 0x03eb7a36 in PurpleEventCallback () 16 0x00df9064 in CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION () 17 0x00d596f7 in __CFRunLoopDoSource1 () 18 0x00d56983 in __CFRunLoopRun () 19 0x00d56240 in CFRunLoopRunSpecific () 20 0x00d56161 in CFRunLoopRunInMode () 21 0x03eb6268 in GSEventRunModal () 22 0x03eb632d in GSEventRun () 23 0x01bf042e in UIApplicationMain () 24 0x0a1e4bd9 in ?? () 25 0x0a1e4b12 in ?? () 26 0x0a1e4515 in ?? () 27 0x0a1e4451 in ?? () 28 0x0a1e44ac in ?? () 29 0x0000e202 in mono_jit_runtime_invoke (method=0xa806e6c, obj=0x0, params=0xbfffedbc, exc=0x0) at ../../../../mono/mini/mini.c:4733 30 0x001c92af in mono_runtime_invoke (method=0xa806e6c, obj=0x0, params=0xbfffedbc, exc=0x0) at ../../../../mono/metadata/object.c:2615 31 0x001caf6b in mono_runtime_exec_main (method=0xa806e6c, args=0xa6a34e0, exc=0x0) at ../../../../mono/metadata/object.c:3581 32 0x001ca891 in mono_runtime_run_main (method=0xa806e6c, argc=0, argv=0xbfffeef4, exc=0x0) at ../../../../mono/metadata/object.c:3355 33 0x00094fe8 in mono_jit_exec (domain=0x6f8fe58, assembly=0xa200730, argc=1, argv=0xbfffeef0) at ../../../../mono/mini/driver.c:1094 34 0x0027cf05 in main () ================================================================= Got a SIGSEGV while executing native code. This usually indicates a fatal error in the mono runtime or one of the native libraries used by your application. Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr) at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Users/plasma/Source/iphone/monotouch/UIKit/UIApplication.cs:26 at MonoTouch.UIKit.UIApplication.Main (System.String[] args) [0x00000] in /Users/plasma/Source/iphone/monotouch/UIKit/UIApplication.cs:31 at MailDialog.Application.Main (System.String[] args) [0x00000] in /Users/rrkhan/Projects/Sandbox/MailDialog/Main.cs:15 I have a very simple sample project illustrating the problem. I can sent you if required.

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Getting Classic ASP to work in .js files under IIS 7

- by Abdullah Ahmed

I am moving a clients classic asp webapp to a new IIS7 based server. The site contains some .js files which have javascript but also classic asp in <% % tags which contains a bunch of conditional statements designed to spit out pieces of javascript based on session state variables. Here's a brief example of what the file could be like.... var arrHOFFSET = -1; var arrLeft ="<"; var arrRight = ">"; <% If ((Session("dashInv") = "True") And ((Session("systemLevelStaff") = "4") Or (Session("systemLevelCompany") = "4"))) Then %> addMainItem("/MgmtTools/WelcomeInventory.asp?wherefrom=salesMan","",81,"center","","",0,0,"","","","",""); <% Else %> <% If (Session("dashInv") = "False") And ((Session("systemLevelStaff") = "4") Or (Session("systemLevelCompany") = "4")) Then %> <% Else %> addMainItem("/calendar/welcome.asp","",81,"center","","",0,0,"","","","",""); <% End If %> <% End If %> defineSubmenuProperties(135,"center","center",-3,0,"","","","","","",""); Currently this file (named custom.js for example) will start throwing js errors, because the server doesnt seem to recognize the asp code in it and therefore does not parse it. I know I need to somehow specify that a .js file should also be treated like an .asp file and run through parsing it. However I am not sure how to go about doing this. Here is what I've tried so far... Under the Server node in IIS under HANDLER MAPPINGS I created a new Script Map with the following settings. Request Path: *.js Executable: C:\Windows\System32\inetsrv\asp.dll Name: ASPClassicInJSFiles Mapping: Invoke Handler only if request is mapped to : File Verbs: All verbs Access: Script I also created a similar handler under the site node itself. Under MIME Types .js is defined as application/x-javascript None of these work. If I simply rename the file to have .asp extension then things work, however this app is poorly coded and has literally 100's of files with the .js files included in them under various names and locations, so rename, search and replace is the last option I have.

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Maven: Unresolved references to [org.osgi.service.http]

- by Simone Vellei

I'm trying to create a bundle using HttpService for register Servlet using maven-bundle-plugin. The pom.xml of the project is: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>felix-tutorial</groupId> <artifactId>example-1</artifactId> <version>1.0</version> <packaging>bundle</packaging> <name>Apache Felix Tutorial Example 1</name> <description>Apache Felix Tutorial Example 1</description>  <build> <plugins> <plugin> <groupId>org.apache.felix</groupId> <artifactId>maven-bundle-plugin</artifactId> <extensions>true</extensions> <configuration> <instructions> <Bundle-SymbolicName>${pom.groupId}.${pom.artifactId}</Bundle-SymbolicName> <Bundle-Name>Service listener example</Bundle-Name> <Bundle-Description>A bundle that displays messages at startup and when service events occur</Bundle-Description> <Bundle-Vendor>Apache Felix</Bundle-Vendor> <Bundle-Version>1.0.0</Bundle-Version> <Bundle-Activator>tutorial.example1.Activator</Bundle-Activator> <Import-Package>org.osgi.framework;version="1.0.0", javax.servlet, javax.servlet.http</Import-Package> </instructions> </configuration> </plugin> </plugins> </build>  <dependencies> <dependency> <groupId>org.apache.felix</groupId> <artifactId>org.apache.felix.framework</artifactId> <version>2.0.4</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.apache.felix</groupId> <artifactId>org.apache.felix.http.api</artifactId> <version>2.0.4</version> </dependency> <dependency> <groupId>org.apache.felix</groupId> <artifactId>org.apache.felix.http.base</artifactId> <version>2.0.4</version> </dependency> <dependency> <groupId>org.apache.felix</groupId> <artifactId>org.apache.felix.http.bridge</artifactId> <version>2.0.4</version> </dependency> <dependency> <groupId>org.apache.felix</groupId> <artifactId>org.apache.felix.http.bundle</artifactId> <version>2.0.4</version> </dependency> <dependency> <groupId>org.apache.felix</groupId> <artifactId>org.apache.felix.http.proxy</artifactId> <version>2.0.4</version> </dependency> <dependency> <groupId>org.apache.felix</groupId> <artifactId>org.apache.felix.http.whiteboard</artifactId> <version>2.0.4</version> </dependency> <dependency> <groupId>org.osgi</groupId> <artifactId>osgi_R4_compendium</artifactId> <version>1.0</version> </dependency> </dependencies> </project> "mvn install" command returns the following error: [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Building Apache Felix Tutorial Example 1 [INFO] task-segment: [install] [INFO] ------------------------------------------------------------------------ Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-resources-plugin/2.3/maven-resources-plugin-2.3.pom Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-resources-plugin/2.3/maven-resources-plugin-2.3.jar Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-install-plugin/2.2/maven-install-plugin-2.2.pom Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-install-plugin/2.2/maven-install-plugin-2.2.jar Downloading: http://repo1.maven.org/maven2/org/apache/maven/shared/maven-filtering/1.0-beta-2/maven-filtering-1.0-beta-2.pom Downloading: http://repo1.maven.org/maven2/org/codehaus/plexus/plexus-interpolation/1.6/plexus-interpolation-1.6.pom Downloading: http://repo1.maven.org/maven2/org/codehaus/plexus/plexus-interpolation/1.6/plexus-interpolation-1.6.jar Downloading: http://repo1.maven.org/maven2/org/apache/maven/shared/maven-filtering/1.0-beta-2/maven-filtering-1.0-beta-2.jar [INFO] [resources:resources {execution: default-resources}] [WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory C:\eclipse\ws\stripes-bundle\src\main\resources [INFO] [compiler:compile {execution: default-compile}] [INFO] Nothing to compile - all classes are up to date [INFO] [resources:testResources {execution: default-testResources}] [WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory C:\eclipse\ws\stripes-bundle\src\test\resources [INFO] [compiler:testCompile {execution: default-testCompile}] [INFO] Nothing to compile - all classes are up to date [INFO] [surefire:test {execution: default-test}] [INFO] Surefire report directory: C:\eclipse\ws\stripes-bundle\target\surefire-reports ------------------------------------------------------- T E S T S ------------------------------------------------------- Running com.beanopoly.stripes.AppTest Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.031 sec Results : Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 [INFO] [bundle:bundle {execution: default-bundle}] [ERROR] Error building bundle felix-tutorial:example-1:bundle:1.0 : Unresolved references to [org.osgi.service.http] by class(es) on the Bundle-Classpath[Jar:do [ERROR] Error(s) found in bundle configuration [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error(s) found in bundle configuration [INFO] ------------------------------------------------------------------------ [INFO] For more information, run Maven with the -e switch [INFO] ------------------------------------------------------------------------ [INFO] Total time: 12 seconds [INFO] Finished at: Sat Mar 27 13:11:47 CET 2010 [INFO] Final Memory: 12M/21M [INFO] ------------------------------------------------------------------------

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iCloud stuff stops working while connected to OpenVPN [closed]

- by Taco Bob

I have a fairly simple OpenVPN setup on an OpenVZ VPS with Ubuntu 11.10. Client is the Viscosity client on Mac OS X 10.8.2, and after some testing, we can rule out the client as being part of the problem. Everything has been working fine except for Apple's iCloud stuff. Web surfing, email, FTP, NNTP, and Skype are all working as expected. It's ONLY the iCloud services that cease to function. If I connect to the VPN, iCloud stuff stops working. I no longer get anything in Messages, Calendar items don't get updated, and Notifications stop working. If I disconnect, the iCloud stuff all starts working. Connect again, iCloud stops working. Here's the server.conf: status openvpn-status.log log /var/log/openvpn.log verb 4 port 1194 proto udp dev tun ca /etc/openvpn/ca.crt cert /etc/openvpn/server.crt key /etc/openvpn/server.key dh /etc/openvpn/dh1024.pem server 10.9.8.0 255.255.255.0 ifconfig-pool-persist ipp.txt push "redirect-gateway def1" push “dhcp-option DNS 10.9.8.1? keepalive 10 120 duplicate-cn cipher BF-CBC comp-lzo user nobody group nogroup persist-key persist-tun tun-mtu 1500 mssfix 1400 I'm using iptables in a script, and it's also fairly simplistic. iptables -F iptables -t nat -F iptables -t mangle -F iptables -A FORWARD -i tun0 -o venet0 -j ACCEPT iptables -A FORWARD -i venet0 -o tun0 -j ACCEPT iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -A INPUT -p tcp --dport 1194 -j ACCEPT iptables -A INPUT -p udp --dport 1194 -j ACCEPT iptables -t nat -A POSTROUTING -s 10.9.8.0/24 -j SNAT --to-source <server's public ip> echo 1 > /proc/sys/net/ipv4/ip_forward I tried forwarding ports as well, with no success. iptables -A FORWARD -p tcp -d 10.9.8.0/24 --dport 5222:5230 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 5222:5230 -j DNAT --to-destination 10.9.8.6 I am also sometimes behind a double-NAT situation that I have no control over. Client -> work VPN -> my OpenVPN box -> Internet. Client -> Airport Express -> ISP (which is doing NAT) -> my OpenVPN box -> Internet. Those two situations are just the fact of life where I am, and I cannot change them. I do have full control over my client and the OpenVPN server. I am completely out of ideas. I have posted a similar query at the OpenVPN forums, but it hasn't posted yet and seems to be in their moderation queue still. Tried on freenode irc channels, but nobody is awake, so here I am. I have Googled extensively for this, and can find nothing that is related. Help me get iCloud stuff working again!

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Getting Classic ASP to work in .js files under IIS 7

- by Abdullah Ahmed

I am moving a clients classic asp webapp to a new IIS7 based server. The site contains some .js files which have javascript but also classic asp in <% % tags which contains a bunch of conditional statements designed to spit out pieces of javascript based on session state variables. Here's a brief example of what the file could be like.... var arrHOFFSET = -1; var arrLeft ="<"; var arrRight = ">"; <% If ((Session("dashInv") = "True") And ((Session("systemLevelStaff") = "4") Or (Session("systemLevelCompany") = "4"))) Then %> addMainItem("/MgmtTools/WelcomeInventory.asp?wherefrom=salesMan","",81,"center","","",0,0,"","","","",""); <% Else %> <% If (Session("dashInv") = "False") And ((Session("systemLevelStaff") = "4") Or (Session("systemLevelCompany") = "4")) Then %> <% Else %> addMainItem("/calendar/welcome.asp","",81,"center","","",0,0,"","","","",""); <% End If %> <% End If %> defineSubmenuProperties(135,"center","center",-3,0,"","","","","","",""); Currently this file (named custom.js for example) will start throwing js errors, because the server doesnt seem to recognize the asp code in it and therefore does not parse it. I know I need to somehow specify that a .js file should also be treated like an .asp file and run through parsing it. However I am not sure how to go about doing this. Here is what I've tried so far... Under the Server node in IIS under HANDLER MAPPINGS I created a new Script Map with the following settings. Request Path: *.js Executable: C:\Windows\System32\inetsrv\asp.dll Name: ASPClassicInJSFiles Mapping: Invoke Handler only if request is mapped to : File Verbs: All verbs Access: Script I also created a similar handler under the site node itself. Under MIME Types .js is defined as application/x-javascript None of these work. If I simply rename the file to have .asp extension then things work, however this app is poorly coded and has literally 100's of files with the .js files included in them under various names and locations, so rename, search and replace is the last option I have.

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IE7 doesn't render part of page until the window resizes or switch between tabs

- by BlackMael

I have a problem with IE7. I have a fixed layout for keeping the header and a sidepanel fixed on a page leaving only the "main content" area switch can happily scroll it's content. This layout works perfectly fine for IE6 and IE8, but sometimes one page may start "hiding" the content that should be showing in the "main content" area. The page finishes loading just fine. For a split second IE7 will render the main content just fine and then it will immediately hide it from view.. somewhere.. It would also seem that it only experiences this problem when there is enough content to force the "main content" area to scroll. By resizing the window or switching to another open tab and back again will cause IE7 to show the page as it was intended. Note the same problem does occur with IE8 in compatibility mode, but the page is rendered correctly in IE8 mode. If need be I can attach the basic CSS styling I use, but I first want to see if this is a known issue with IE7. Does IE7 have issues with positioned layout and overflow scrolling that is sometimes likes to forgot to finish rendering the page correctly until some window redraw event forces to finish rendering? Please remember, this exact same layout is used across multiple pages in the site as it is set up in a master page. It is just (in this case) one page that is experiencing this problem. Other pages with the exact same layout do render correctly. Even if the main content is full enough to also scroll. UPDATE: A related question which doesn't have an answer at this point. LATE UPDATE: Adding example masterpage and css Please note this same layout is the same for all the pages in the application. My problem with IE7 only occurs on one such page. All other pages have happily render correctly in IE7. Just one page, using the exact same layout, has issues where it sometimes hides the content in the "work-space" div. The master page <%@ Master Language="VB" CodeFile="MasterPage.master.vb" Inherits="shared_templates_MasterPage" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <link rel="Stylesheet" type="text/css" href="~/common/yui/2.7.0/build/reset-fonts/reset-fonts.css" runat="server" /> <link rel="Stylesheet" type="text/css" href="~/shared/css/layout.css" runat="server" /> <asp:ContentPlaceHolder ID="head" runat="server" /> </head> <body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" /> <div id="app-header"> </div> <div id="side-panel"> </div> <div id="work-space"> <asp:ContentPlaceHolder ID="WorkSpaceContentPlaceHolder" runat="server" /> </div> <div id="status-bar"> <asp:ContentPlaceHolder ID="StatusBarContentPlaceHolder" runat="server" /> </div> </form> </body> </html> The layout.css html { overflow: hidden; } body { overflow: hidden; padding: 0; margin: 0; width: 100%; height: 100%; background-color: white; } body, table, td, th, select, textarea, input { font-family: Tahoma, Arial, Sans-Serif; font-size: 9pt; } p { padding-left: 1em; margin-bottom: 1em; } #app-header { position: absolute; top: 0; left: 0; width: 100%; height: 80px; background-color: #dcdcdc; border-bottom: solid 4px #000; } #side-panel { position: absolute; top: 84px; left: 0px; bottom: 0px; overflow: auto; padding: 0; margin: 0; width: 227px; background-color: #AABCCA; border-right: solid 1px black; background-repeat: repeat-x; padding-top: 5px; } #work-space { position: absolute; top: 84px; left: 232px; right: 0px; padding: 0; margin: 0; bottom: 22px; overflow: auto; background-color: White; } #status-bar { position: absolute; height: 20px; left: 228px; right: 0px; padding: 0; margin: 0; bottom: 0px; border-top: solid 1px #c0c0c0; background-color: #f0f0f0; } The Default.aspx <%@ Page Title="Test" Language="VB" MasterPageFile="~/shared/templates/MasterPage.master" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %> <asp:Content ID="WorkspaceContent" ContentPlaceHolderID="WorkSpaceContentPlaceHolder" Runat="Server"> Workspace <asp:ListView ID="DemoListView" runat="server" DataSourceID="DemoObjectDataSource" ItemPlaceholderID="DemoPlaceHolder"> <LayoutTemplate> <table style="border: 1px solid #a0a0a0; width: 600px"> <colgroup> <col width="80" /> <col /> <col width="80" /> <col width="120" /> </colgroup> <tbody> <asp:PlaceHolder ID="DemoPlaceHolder" runat="server" /> </tbody> </table> </LayoutTemplate> <ItemTemplate> <tr> <th><%#Eval("ID")%></th> <td><%#Eval("Name")%></td> <td><%#Eval("Size")%></td> <td><%#Eval("CreatedOn", "{0:yyyy-MM-dd HH:mm:ss}")%></td> </tr> </ItemTemplate> </asp:ListView> <asp:ObjectDataSource ID="DemoObjectDataSource" runat="server" OldValuesParameterFormatString="original_{0}" SelectMethod="GetData" TypeName="DemoLogic"> <SelectParameters> <asp:Parameter Name="path" Type="String" /> </SelectParameters> </asp:ObjectDataSource> </asp:Content> <asp:Content ID="StatusContent" ContentPlaceHolderID="StatusBarContentPlaceHolder" Runat="Server"> Ready OK. </asp:Content>

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Windows startup Powershell script not closing after Start-Process

- by Matthew Phipps

I've got a Powershell V2.0 startup script for my work computer (XP Professional 64-bit), as follows: start "C:\Program Files (x86)\Microsoft Office\Office12\OUTLOOK.EXE" -ArgumentList "/recycle" sleep -S 2 start "C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -ArgumentList "https://mail.google.com" sleep -S 2 start "C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -ArgumentList "-new-window https://www.google.com/calendar" sleep -S 2 start "C:\Program Files (x86)\Skype\Phone\Skype.exe" The sleeps are to ensure that the windows appear on the taskbar in the correct order. I run this from a shortcut on my Quick Launch with the following Target: C:\WINDOWS\system32\WindowsPowerShell\v1.0\powershell.exe C:\scripts\initialize.ps1 (Yes, this is 2.0: powershell -Version 2.0 works, as does -Version 1.0, but not -Version 3.0) Problem is, the command window stays open until the Firefox windows are closed, which is not what I want. Looking at Process Explorer when I run the script, here's what happens: powershell.exe appears under explorer.exe and the Powershell window appears (with a black background, oddly. But it's not cmd.exe, since when I was debugging the script error messages would appear in red). outlook.exe appears under powershell.exe and the Outlook window appears. firefox.exe appears under powershell.exe and a Firefox window appears. A second firefox.exe appears under powershell.exe and another Firefox window appears. The second Firefox process then exits, as expected, since Firefox only uses one process. skype.exe appears under powershell.exe and the Skype window appears. The powershell.exe process inexplicably sticks around, as does the Powershell window. If I close both Firefox windows, the powershell.exe process exits and the Powershell window closes, and the outlook.exe and skype.exe processes appear under explorer.exe as expected. I suspect this has something to do with Firefox's standard input, output and error: I wouldn't expect Outlook or Skype to ever output anything to the console, but Firefox has command-line options that allow it to do so. I've looked over my about:config's user set values and didn't find anything suspicious. Finally, if I have a firefox.exe instance already running (started from the desktop shortcut) the problem doesn't occur (the powershell.exe process exits as it ought to). So what's going on here? I'm going to try adding -WindowStyle hidden to the shortcut next (gotta close this Firefox to test it), but I want to get to the bottom of this, if only to improve my understanding of how Windows consoles work.

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Looking for personal scheduling software / todo list with rather particular requirements

- by Cthulhu

I've been scouring the web for a couple of (my boss') hours, looking for a piece of software that can organize my tasks in two ways. First, I have a list of bullet points / todo items I can do at any given time. Think of stuff like solve issue X, ask X about Y, write documentation about Z, etcetera. Second, I have a number of running projects I'd like to organize better, as in schedule for a certain part of a day of the week. Ideally (I think), my day would be organized as 50% spent on projects and 50% on the other small things. Now, I don't like most calendar applications (such as Outlook & friends), their UI is too 'official', not really easy to move stuff around (in my experience). I don't like most todo lists either, too static and things. I like new, fast and hip software. I've looked at GTD versions of Tiddlywiki, and I like mGSD for one particular feature. You can make lists of tasks and basically give them one of three statusses - Now (nothing required, you can do it right away), Waiting (you need someone or something before you can work on this), or the most gratifying of all, Done. I like that feature because it's a simple todo list, but indicates more accurately the things you can do right now and the things you depend on someone else for to do. Anyways, that's just a small aspect of that program - most of the other things in there I can't find a particularly good use for. If there's something like that (maybe something that works even snappier, cleaner UI), combined with an easy to use bit of scheduling software (optionally separated into two applications, but preferrably not), I think I'd like that. (Besides something like that, I also use several instances of Trac to monitor tasks and bugs and things for the various clients and projects I have to serve, and TaskCoach to monitor the amount of time I spend on each task / each client. An easy / low-maintenance time tracking software would be neat too) Of course, the software has to be free to use. I don't like shareware, trials, limited software and the like. I could develop my own too, but I'm lazy like that and there's a dozen other projects I'd like to do in my free time (neither of which I actually do). Edit: I like David Seah's printable CEO stuff, if something like that (with some video game / instant achievement / gratification) exists in software, it'd be awesome.

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Data capture from other sheet into Summary sheet

- by Hemant

an Excel workbook which has Summary sheet, Pending and Master Sheet. My requirement is below and try to develop a Macro or VB logic for excel • I want to control this workbook from Summary sheet. o Generate Fault Summary – ? I have set logic but if doesn’t give warning if sheet name is exists , so need to add this logic . ? When we press the Fault Report Summary command button then it copy the master sheet with cell “A6” Name and will hide the Master sheet. Again when you select the another Month name then it will generate the sheet for that month name. o Generate Toll System Uptime ? When I select the sheet name and “Week” then Press the “Enter “Command button then it should get the result from that sheet number . Each sheet number has Month detail in B2 Cell. ? To calculate the Uptime formula for Week wise is • Week-01 = (1680-SUMIFS(L5:L23,B5:B23,"="&B2,B5:B23,"<="&(B2+6)))/1680 • Week-02 =(1680-SUMIFS(L5:L23,B5:B23,"="&(B2+7),B5:B23,"<="&(B2+13)))/1680 • Week-03 =(1680-SUMIFS(L5:L23,B5:B23,"="&(B2+14),B5:B23,"<="&(B2+20)))/1680 • Week-04 =(1680-SUMIFS(L5:L23,B5:B23,"="&(B2+21),B5:B23,"<="&(B2+27)))/1680 • Month =(1680-SUMIFS(L5:L23,B5:B23,"="&(B2),B5:B23,"<="&(DATE(YEAR(B2),1+MONTH(B2),1)-1)))/1680 ? Result should reflect in Summary sheet at B18 cell . o Pending Fault Report Summary ? When segregate the report on its status like which one is open or Close . It is open then it is Pending Fault Report and when it is Close status it means it is closed. ? If any fault which has OPEN status in all sheets(Jan-13,Feb-13,Mar-13….etc) then it should be come as well as in Pending Sheet which ascending date order. ? When it’s status is changed then it should be moved in that month sheet or nearby fault created date. It status is close then it should not be available in pending sheet as it’s status is Closed. ? Each fault has Reported date and we monitor all fault according reported date. ? When we press the Update Fault Report Summary command button then it should update as above logic. ? Some time we export the Pending fault report , so date calendar should be present in Start and End date to Choose the date. When we press the Export command line then it should export the Pending fault report and able to save in Excel,PDF.

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What is wrong with my gtkrc file?

- by PP

I have written following gtkrc file from some other theme gtkrc file. This theme is normal theme with buttons using pixmap theme engine. I have also given background image to GtkEntry. Problem is that, When i use this theme my buttons doesn't show text one them and my entry box does not show cursor. Plus in engine "pixmap" tag I need to specify image name with it's path as I have already mentioned pixmap_path on the top of rc file but why I still need to specify the path in file = "xxx" # gtkrc file. pixmap_path "./backgrounds:./icons:./buttons:./emotions" gtk-button-images = 1 #Icon Sizes and color definitions gtk-icon-sizes = "gtk-small-toolbar=16,16:gtk-large-toolbar=24,24:gtk-button=16,16" gtk-toolbar-icon-size = GTK_ICON_SIZE_SMALL_TOOLBAR gtk_color_scheme = "fg_color:#000000\nbg_color:#848484\nbase_color:#000000\ntext_color:#000000\nselected_bg_color:#f39638\nselected_fg_color:#000000\ntooltip_bg_color:#634110\ntooltip_fg_color:#ffffff" style "theme-default" { xthickness = 10 ythickness = 10 GtkEntry::honors-transparent-bg-hint = 0 GtkMenuItem::arrow-spacing = 20 GtkMenuItem::horizontal-padding = 50 GtkMenuItem::toggle-spacing = 30 GtkOptionMenu::indicator-size = {11, 5} GtkOptionMenu::indicator-spacing = {6, 5, 4, 4} GtkTreeView::horizontal_separator = 5 GtkTreeView::odd_row_color = "#efefef" GtkTreeView::even_row_color = "#e3e3e3" GtkWidget::link-color = "#0062dc" # blue GtkWidget::visited-link-color = "#8c00dc" #purple GtkButton::default_border = { 0, 0, 0, 0 } GtkButton::child-displacement-x = 0 GtkButton::child-displacement-y = 1 GtkWidget::focus-padding = 0 GtkRange::trough-border = 0 GtkRange::slider-width = 19 GtkRange::stepper-size = 19 GtkScrollbar::min_slider_length = 36 GtkScrollbar::has-secondary-backward-stepper = 1 GtkPaned::handle_size = 8 GtkMenuBar::internal-padding = 0 GtkTreeView::expander_size = 13 #15 GtkExpander::expander_size = 13 #17 GtkScale::slider-length = 35 GtkScale::slider-width = 17 GtkScale::trough-border = 0 GtkWidget::link-color = "#0062dc" GtkWidget::visited-link-color = "#8c00dc" #purple WnckTasklist::fade-overlay-rect = 0 WnckTasklist::fade-loop-time = 5.0 # 5 seconds WnckTasklist::fade-opacity = 0.5 # final opacity #makes menu only overlap border GtkMenu::horizontal-offset = -1 #removes extra padding at top and bottom of menus. Makes menuitem overlap border GtkMenu::vertical-padding = 0 #set to the same as roundness, used for better hotspot selection of tabs GtkNotebook::tab-curvature = 2 GtkNotebook::tab-overlap = 4 GtkMenuItem::arrow-spacing = 10 GtkOptionMenu ::indicator-size = {11, 5} GtkCheckButton ::indicator-size = 16 GtkCheckButton ::indicator-spacing = 1 GtkRadioButton ::indicator-size = 16 GtkTreeView::horizontal_separator = 2 GtkTreeView::odd_row_color = "#efefef" GtkTreeView::even_row_color = "#e3e3e3" NautilusIconContainer::normal_icon_color = "#ff0000" GtkEntry::inner-border = {0, 0, 0, 0} GtkScrolledWindow::scrollbar-spacing = 0 GtkScrolledWindow::scrollbars-within-bevel = 1 fg[NORMAL] = @fg_color fg[ACTIVE] = @fg_color fg[PRELIGHT] = @fg_color fg[SELECTED] = @selected_fg_color fg[INSENSITIVE] = shade (3.0,@fg_color) bg[NORMAL] = @bg_color bg[ACTIVE] = shade (0.95,@bg_color) bg[PRELIGHT] = mix(0.92, shade (1.1,@bg_color), @selected_bg_color) bg[SELECTED] = @selected_bg_color bg[INSENSITIVE] = shade (1.06,@bg_color) base[NORMAL] = @base_color base[ACTIVE] = shade (0.65,@base_color) base[PRELIGHT] = @base_color base[SELECTED] = @selected_bg_color base[INSENSITIVE] = shade (1.025,@bg_color) text[NORMAL] = @text_color text[ACTIVE] = shade (0.95,@base_color) text[PRELIGHT] = @text_color text[SELECTED] = @selected_fg_color text[INSENSITIVE] = mix (0.675,shade (0.95,@bg_color),@fg_color) } style "theme-entry" { xthickness = 10 ythickness = 10 GtkEntry::inner-border = {10, 10, 10, 10} GtkEntry::progress-border = {10, 10, 10, 10} GtkEntry::icon-prelight = 1 GtkEntry::state-hintt = 1 #GtkEntry::honors-transparent-bg-hint = 1 text[NORMAL] = "#000000" text[ACTIVE] = "#787878" text[INSENSITIVE] = "#787878" text[SELECTED] = "#FFFFFF" engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = FALSE file = "./backgrounds/entry_background.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = FLAT_BOX state = PRELIGHT recolorable = FALSE file = "./backgrounds/entry_background.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = FLAT_BOX state = ACTIVE recolorable = FALSE file = "./backgrounds/entry_background.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } #----------------------------------------------- #Chat Balloon Incoming background. style "theme-event-box-top-in" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_in_top.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-mid-in" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_in_mid.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-bot-in" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_in_bot.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } #----------------------------------------------- #Chat Balloon Outgoing background. style "theme-event-box-top-out" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_out_top.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-mid-out" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_out_mid.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-bot-out" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_out_bot.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-wide" = "theme-default" { xthickness = 2 ythickness = 2 } style "theme-wider" = "theme-default" { xthickness = 3 ythickness = 3 } style "theme-button" { GtkButton::inner-border = {0, 0, 0, 0} GtkWidget::focus-line-width = 0 GtkWidget::focus-padding = 0 bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#ff0000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#ffffff" fg[INSENSITIVE] = "#000000" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" text[NORMAL] = "#ff0000" text[INSENSITIVE] = "#ff0000" text[PRELIGHT] = "#ff0000" text[SELECTED] = "#ff0000" text[INSENSITIVE] = "#434346" text[ACTIVE] = "#ff0000" base[NORMAL] = "#ff0000" base[INSENSITIVE] = "#ff0000" base[PRELIGHT] = "#ff0000" base[SELECTED] = "#ff0000" base[INSENSITIVE] = "#ff0000" engine "pixmap" { image { function = BOX state = NORMAL recolorable = TRUE file = "./buttons/LightButtonAct.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = BOX state = PRELIGHT recolorable = TRUE file = "./buttons/LightButtonRoll.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = BOX state = ACTIVE recolorable = TRUE file = "./buttons/LightButtonClicked.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = BOX state = INSENSITIVE recolorable = TRUE file = "./buttons/LightButtonInact.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-toolbar" { xthickness = 2 ythickness = 2 bg[NORMAL] = shade (1.078,@bg_color) } style "theme-handlebox" { bg[NORMAL] = shade (0.95,@bg_color) } style "theme-scale" { bg[NORMAL] = shade (1.06, @bg_color) bg[PRELIGHT] = mix(0.85, shade (1.1,@bg_color), @selected_bg_color) bg[SELECTED] = "#4d4d55" } style "theme-range" { bg[NORMAL] = shade (1.12,@bg_color) bg[ACTIVE] = @bg_color bg[PRELIGHT] = mix(0.95, shade (1.10,@bg_color), @selected_bg_color) #Arrows text[NORMAL] = shade (0.275,@selected_fg_color) text[PRELIGHT] = @selected_fg_color text[ACTIVE] = shade (0.10,@selected_fg_color) text[INSENSITIVE] = mix (0.80,shade (0.90,@bg_color),@fg_color) } style "theme-notebook" = "theme-wider" { xthickness = 4 ythickness = 4 GtkNotebook::tab-curvature = 5 GtkNotebook::tab-vborder = 1 GtkNotebook::tab-overlap = 1 GtkNotebook::tab-vborder = 1 bg[NORMAL] = "#d2d2d2" bg[ACTIVE] = "#e3e3e3" bg[PRELIGHT] = "#848484" bg[SELECTED] = "#848484" bg[INSENSITIVE] = "#848484" text[PRELIGHT] = @selected_fg_color text[NORMAL] = "#000000" text[ACTIVE] = "#737373" text[SELECTED] = "#000000" text[INSENSITIVE] = "#737373" fg[PRELIGHT] = @selected_fg_color fg[NORMAL] = "#000000" fg[ACTIVE] = "#737373" fg[SELECTED] = "#000000" fg[INSENSITIVE] = "#737373" } style "theme-paned" { bg[PRELIGHT] = shade (1.1,@bg_color) } style "theme-panel" { # Menu fg[PRELIGHT] = @selected_fg_color font_name = "Bold 9" text[PRELIGHT] = @selected_fg_color } style "theme-menu" { xthickness = 0 ythickness = 0 bg[NORMAL] = shade (1.16,@bg_color) bg[SELECTED] = "#ff9a00" text[PRELIGHT] = @selected_fg_color fg[PRELIGHT] = @selected_fg_color } style "theme-menu-item" = "theme-menu" { xthickness = 3 ythickness = 3 base[SELECTED] = "#ff9a00" base[NORMAL] = "#ff9a00" base[PRELIGHT] = "#ff9a00" base[INSENSITIVE] = "#ff9a00" base[ACTIVE] = "#ff9a00" bg[SELECTED] = "#ff9a00" bg[NORMAL] = shade (1.16,@bg_color) } style "theme-menubar" { #TODO } style "theme-menubar-item" = "theme-menu-item" { #TODO bg[SELECTED] = "#ff9a00" } style "theme-tree" { xthickness = 2 ythickness = 1 font_name = "Bold 9" GtkWidget::focus-padding = 0 bg[NORMAL] = "#5a595a" bg[PRELIGHT] = "#5a595a" bg[ACTIVE] = "#5a5a5a" fg[NORMAL] = "#ffffff" fg[ACTIVE] = "#ffffff" fg[SELECTED] = "#ff9a00" fg[PRELIGHT] = "#ffffff" bg[SELECTED] = "#ff9a00" base[SELECTED] = "#ff9a00" base[NORMAL] = "#ff9a00" base[PRELIGHT] = "#ff9a00" base[INSENSITIVE] = "#ff9a00" base[ACTIVE] = "#ff9a00" text[NORMAL] = "#000000" text[PRELIGHT] = "#ff9a00" text[ACTIVE] = "#ff9a00" text[SELECTED] = "#ff9a00" text[INSENSITIVE] = "#434346" } style "theme-tree-arrow" { bg[NORMAL] = mix(0.70, shade (0.60,@bg_color), shade (0.80,@selected_bg_color)) bg[PRELIGHT] = mix(0.80, @bg_color, @selected_bg_color) } style "theme-progressbar" { font_name = "Bold" bg[SELECTED] = @selected_bg_color fg[PRELIGHT] = @selected_fg_color bg[ACTIVE] = "#fe7e00" bg[NORMAL] = "#ffba00" } style "theme-tooltips" = "theme-wider" { font_name = "Liberation sans 10" bg[NORMAL] = @tooltip_bg_color fg[NORMAL] = @tooltip_fg_color text[NORMAL] = @tooltip_fg_color } style "theme-combo" = "theme-button" { xthickness = 4 ythickness = 4 text[NORMAL] = "#fd7d00" text[INSENSITIVE] = "#8a8a8a" base[NORMAL] = "#e0e0e0" base[INSENSITIVE] = "#aeaeae" } style "theme-combo-box" = "theme-button" { xthickness = 3 ythickness = 2 bg[NORMAL] = "#343539" bg[PRELIGHT] = "#343539" bg[ACTIVE] = "#26272b" bg[INSENSITIVE] = "#404145" } style "theme-entry-combo-box" { xthickness = 6 ythickness = 3 text[NORMAL] = "#000000" text[INSENSITIVE] = "#8a8a8a" base[NORMAL] = "#ffffff" base[INSENSITIVE] = "#aeaeae" } style "theme-combo-arrow" = "theme-button" { xthickness = 1 ythickness = 1 } style "theme-view" { xthickness = 0 ythickness = 0 } style "theme-check-radio-buttons" { GtkWidget::interior-focus = 0 GtkWidget::focus-padding = 1 text[NORMAL] = "#ff0000" base[NORMAL] = "#ff0000" text[SELECTED] = "#ffffff" text[INSENSITIVE] = shade (0.625,@bg_color) base[PRELIGHT] = mix(0.80, @base_color, @selected_bg_color) bg[NORMAL] = "#438FC6" bg[INSENSITIVE] = "#aeaeae" bg[SELECTED] = "#ff8a01" } style "theme-radio-buttons" = "theme-button" { GtkWidget::interior-focus = 0 GtkWidget::focus-padding = 1 text[SELECTED] = @selected_fg_color text[INSENSITIVE] = shade (0.625,@bg_color) base[PRELIGHT] = mix(0.80, @base_color, @selected_bg_color) bg[NORMAL] = "#ffffff" bg[INSENSITIVE] = "#dcdcdc" bg[SELECTED] = @selected_bg_color } style "theme-spin-button" { bg[NORMAL] = "#d2d2d2" bg[ACTIVE] = "#868686" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = shade(1.10,@selected_bg_color) bg[INSENSITIVE] = "#dcdcdc" base[NORMAL] = "#ffffff" base[INSENSITIVE] = "#dcdcdc" text[NORMAL] = "#000000" text[INSENSITIVE] = "#aeaeae" } style "theme-calendar" { xthickness = 0 ythickness = 0 bg[NORMAL] = "#676767" bg[PRELIGHT] = shade(0.92,@bg_color) bg[ACTIVE] = "#ff0000" bg[INSENSITIVE] = "#ff0000" bg[SELECTED] = "#ff0000" text[PRELIGHT] = "#000000" text[NORMAL] = "#000000" text[INSENSITIVE]= "#000000" text[SELECTED] = "#ffffff" text[ACTIVE] = "#000000" fg[NORMAL] = "#ffffff" fg[PRELIGHT] = "#ffffff" fg[INSENSITIVE] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" base[NORMAL] = "#ff0000" base[NORMAL] = "#aeaeae" base[INSENSITIVE] = "#00ff00" base[SELECTED] = "#f3720d" base[ACTIVE] = "#f3720d" } style "theme-separator-menu-item" { xthickness = 1 ythickness = 0 GtkSeparatorMenuItem::horizontal-padding = 2 # We are setting the desired height by using wide-separators # There is no other way to get the odd height ... GtkWidget::wide-separators = 1 GtkWidget::separator-width = 1 GtkWidget::separator-height = 5 } style "theme-frame" { xthickness = 10 ythickness = 0 GtkWidget::LABEL-SIDE-PAD = 14 GtkWidget::LABEL-PAD = 23 fg[NORMAL] = "#000000" fg[ACTIVE] = "#000000" fg[PRELIGHT] = "#000000" fg[SELECTED] = "#000000" fg[INSENSITIVE] = "#000000" bg[NORMAL] = "#e2e2e2" bg[ACTIVE] = "#000000" bg[PRELIGHT] = "#000000" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#000000" base[NORMAL] = "#000000" base[ACTIVE] = "#000000" base[PRELIGHT] = "#000000" base[SELECTED] = "#000000" base[INSENSITIVE]= "#000000" text[NORMAL] = "#000000" text[ACTIVE] = "#000000" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[INSENSITIVE]= "#000000" } style "theme-textview" { text[NORMAL] = "#000000" text[ACTIVE] = "#000000" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[INSENSITIVE] = "#434648" bg[NORMAL] = "#ffffff" bg[ACTIVE] = "#ffffff" bg[PRELIGHT] = "#ffffff" bg[SELECTED] = "#ffffff" bg[INSENSITIVE] = "#ffffff" fg[NORMAL] = "#ffffff" fg[ACTIVE] = "#ffffff" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[INSENSITIVE] = "#ffffff" base[NORMAL] = "#ffffff" base[ACTIVE] = "#ffffff" base[PRELIGHT] = "#ffffff" base[SELECTED] = "#ff9a00" base[INSENSITIVE] = "#ffffff" } style "theme-clist" { text[NORMAL] = "#000000" text[ACTIVE] = "#000000" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[INSENSITIVE] = "#434648" bg[NORMAL] = "#353438" bg[ACTIVE] = "#ff9a00" bg[PRELIGHT] = "#ff9a00" bg[SELECTED] = "#ff9a00" bg[INSENSITIVE] = "#ffffff" fg[NORMAL] = "#000000" fg[ACTIVE] = "#ff9a00" fg[PRELIGHT] = "#ff9a00" fg[SELECTED] = "#fdff00" fg[INSENSITIVE] = "#757575" base[NORMAL] = "#ffffff" base[ACTIVE] = "#fdff00" base[PRELIGHT] = "#000000" base[SELECTED] = "#fdff00" base[INSENSITIVE] = "#757575" } style "theme-label" { bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#000000" fg[INSENSITIVE] = "#434346" fg[PRELIGHT] = "#000000" fg[SELECTED] = "#000000" fg[ACTIVE] = "#000000" text[NORMAL] = "#ffffff" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#ffffff" text[SELECTED] = "#ffffff" text[ACTIVE] = "#ffffff" base[NORMAL] = "#000000" base[INSENSITIVE] = "#00ff00" base[PRELIGHT] = "#0000ff" base[ACTIVE] = "#f39638" } style "theme-button-label" { bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#ffffff" fg[INSENSITIVE] = "#434346" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" text[NORMAL] = "#000000" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[ACTIVE] = "#000000" base[NORMAL] = "#000000" base[INSENSITIVE] = "#00ff00" base[PRELIGHT] = "#0000ff" base[SELECTED] = "#ff00ff" base[ACTIVE] = "#ffff00" } style "theme-button-check-radio-label" { bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#000000" fg[INSENSITIVE] = "#434346" fg[PRELIGHT] = "#000000" fg[SELECTED] = "#000000" fg[ACTIVE] = "#000000" text[NORMAL] = "#ffffff" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#ffffff" text[SELECTED] = "#000000" text[ACTIVE] = "#ffffff" base[NORMAL] = "#000000" base[INSENSITIVE] = "#00ff00" base[PRELIGHT] = "#0000ff" base[SELECTED] = "#ff00ff" base[ACTIVE] = "#ffff00" } style "theme-table" { bg[NORMAL] = "#848484" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" } style "theme-iconview" { GtkWidget::focus-line-width=1 bg[NORMAL] = "#000000" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#c19676" bg[SELECTED] = "#c19676" bg[INSENSITIVE] = "#969696" fg[NORMAL] = "#ffffff" fg[INSENSITIVE] = "#ffffff" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" text[NORMAL] = "#000000" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[ACTIVE] = "#000000" base[NORMAL] = "#ffffff" base[INSENSITIVE] = "#434346" base[PRELIGHT] = "#FAD184" base[SELECTED] = "#FAD184" base[ACTIVE] = "#FAD184" } # Set Widget styles class "GtkWidget" style "theme-default" class "GtkScale" style "theme-scale" class "GtkRange" style "theme-range" class "GtkPaned" style "theme-paned" class "GtkFrame" style "theme-frame" class "GtkMenu" style "theme-menu" class "GtkMenuBar" style "theme-menubar" class "GtkEntry" style "theme-entry" class "GtkProgressBar" style "theme-progressbar" class "GtkToolbar" style "theme-toolbar" class "GtkSeparator" style "theme-wide" class "GtkCalendar" style "theme-calendar" class "GtkTable" style "theme-table" widget_class "*<GtkMenuItem>*" style "theme-menu-item" widget_class "*<GtkMenuBar>.<GtkMenuItem>*" style "theme-menubar-item" widget_class "*<GtkSeparatorMenuItem>*" style "theme-separator-menu-item" widget_class "*<GtkLabel>" style "theme-label" widget_class "*<GtkButton>" style "theme-button" widget_class "*<GtkButton>*<GtkLabel>*" style "theme-button-label" widget_class "*<GtkCheckButton>" style "theme-check-radio-buttons" widget_class "*<GtkToggleButton>.<GtkLabel>*" style "theme-button" widget_class "*<GtkCheckButton>.<GtkLabel>*" style "theme-button-check-radio-label" widget_class "*<GtkRadioButton>.<GtkLabel>*" style "theme-button-check-radio-label" widget_class "*<GtkTextView>" style "theme-textview" widget_class "*<GtkList>" style "theme-textview" widget_class "*<GtkCList>" style "theme-clist" widget_class "*<GtkIconView>" style "theme-iconview" widget_class "*<GtkHandleBox>" style "theme-handlebox" widget_class "*<GtkNotebook>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkEventBox>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkDrawingArea>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkLayout>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkViewport>" style "theme-notebook" widget_class "*<GtkNotebook>.<GtkLabel>*" style "theme-notebook" #for tabs # Combo Box Stuff widget_class "*<GtkCombo>*" style "theme-combo" widget_class "*<GtkComboBox>*<GtkButton>" style "theme-combo-box" widget_class "*<GtkComboBoxEntry>*" style "theme-entry-combo-box" widget_class "*<GtkSpinButton>*" style "theme-spin-button" widget_class "*<GtkSpinButton>*<GtkArrow>*" style:highest "theme-tree-arrow" # Tool Tips Stuff widget "gtk-tooltip*" style "theme-tooltips" # Tree View Stuff widget_class "*<GtkTreeView>.<GtkButton>*" style "theme-tree" widget_class "*<GtkCTree>.<GtkButton>*" style "theme-tree" widget_class "*<GtkList>.<GtkButton>*" style "theme-tree" widget_class "*<GtkCList>.<GtkButton>*" style "theme-tree" # For arrow bg widget_class "*<GtkTreeView>.<GtkButton>*<GtkArrow>" style "theme-tree-arrow" widget_class "*<GtkCTree>.<GtkButton>*<GtkArrow>" style "theme-tree-arrow" widget_class "*<GtkList>.<GtkButton>*<GtkArrow>" style "theme-tree-arrow" ####################################################### ## GNOME specific ####################################################### widget_class "*.ETree.ECanvas" style "theme-tree" widget_class "*.ETable.ECanvas" style "theme-tree" style "panelbuttons" = "theme-button" { # As buttons are draw lower this helps center text xthickness = 3 ythickness = 3 } widget_class "*Panel*<GtkButton>*" style "panelbuttons" style "murrine-fg-is-text-color-workaround" { text[NORMAL] = "#000000" text[ACTIVE] = "#fdff00" text[SELECTED] = "#fdff00" text[INSENSITIVE] = "#757575" bg[SELECTED] = "#b85e03" bg[ACTIVE] = "#b85e03" bg[SELECTED] = "#b85e03" fg[SELECTED] = "#ffffff" fg[NORMAL] = "#ffffff" fg[ACTIVE] = "#ffffff" fg[INSENSITIVE] = "#434348" fg[PRELIGHT] = "#ffffff" base[SELECTED] = "#ff9a00" base[NORMAL] = "#ffffff" base[ACTIVE] = "#ff9a00" base[INSENSITIVE] = "#434348" base[PRELIGHT] = "#ffffff" } widget_class "*.<GtkTreeView>*" style "murrine-fg-is-text-color-workaround" style "murrine-combobox-text-color-workaround" { text[NORMAL] = "#FFFFF" text[PRELIGHT] = "#FFFFF" text[SELECTED] = "#FFFFF" text[ACTIVE] = "#FFFFF" text[INSENSITIVE] = "#FFFFF" } widget_class "*.<GtkComboBox>.<GtkCellView>" style "murrine-combobox-text-color-workaround" style "murrine-menuitem-text-is-fg-color-workaround" { bg[NORMAL] = "#0000ff" text[NORMAL] = "#ffffff" text[PRELIGHT] = "#ffffff"#"#FD7D00" text[SELECTED] = "#ffffff"#"#ff0000"# @selected_fg_color text[ACTIVE] = "#ffffff"#"#ff0000"# "#FD7D00" text[INSENSITIVE] = "#ffffff"#ff0000"# "#414143" } widget "*.gtk-combobox-popup-menu.*" style "murrine-menuitem-text-is-fg-color-workaround"

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Java Port Socket Programming Error

- by atrus-darkstone

Hi- I have been working on a java client-server program using port sockets. The goal of this program is for the client to take a screenshot of the machine it is running on, break the RGB info of this image down into integers and arrays, then send this info over to the server, where it is reconstructed into a new image file. However, when I run the program I am experiencing the following two bugs: The first number recieved by the server, no matter what its value is according to the client, is always 49. The client only sends(or the server only receives?) the first value, then the program hangs forever. Any ideas as to why this is happening, and what I can do to fix it? The code for both client and server is below. Thanks! CLIENT: import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.image.BufferedImage; import java.io.*; import java.net.Socket; import java.text.SimpleDateFormat; import java.util.*; import javax.swing.*; import javax.swing.Timer; public class ViewerClient implements ActionListener{ private Socket vSocket; private BufferedReader in; private PrintWriter out; private Robot robot; // static BufferedReader orders = null; public ViewerClient() throws Exception{ vSocket = null; in = null; out = null; robot = null; } public void setVSocket(Socket vs) { vSocket = vs; } public void setInput(BufferedReader i) { in = i; } public void setOutput(PrintWriter o) { out = o; } public void setRobot(Robot r) { robot = r; } /*************************************************/ public Socket getVSocket() { return vSocket; } public BufferedReader getInput() { return in; } public PrintWriter getOutput() { return out; } public Robot getRobot() { return robot; } public void run() throws Exception{ int speed = 2500; int pause = 5000; Timer timer = new Timer(speed, this); timer.setInitialDelay(pause); // System.out.println("CLIENT: Set up timer."); try { setVSocket(new Socket("Alex-PC", 4444)); setInput(new BufferedReader(new InputStreamReader(getVSocket().getInputStream()))); setOutput(new PrintWriter(getVSocket().getOutputStream(), true)); setRobot(new Robot()); // System.out.println("CLIENT: Established connection and IO ports."); // timer.start(); captureScreen(nameImage()); }catch(Exception e) { System.err.println(e); } } public void captureScreen(String fileName) throws Exception{ Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Rectangle screenRectangle = new Rectangle(screenSize); BufferedImage image = getRobot().createScreenCapture(screenRectangle); int width = image.getWidth(); int height = image.getHeight(); int[] pixelData = new int[(width * height)]; image.getRGB(0,0, width, height, pixelData, width, height); byte[] imageData = new byte[(width * height)]; String fromServer = null; if((fromServer = getInput().readLine()).equals("READY")) { sendWidth(width); sendHeight(height); sendArrayLength((width * height)); sendImageInfo(fileName); sendImageData(imageData); } /* System.out.println(imageData.length); String fromServer = null; for(int i = 0; i < pixelData.length; i++) { imageData[i] = ((byte)pixelData[i]); } System.out.println("CLIENT: Pixel data successfully converted to byte data."); System.out.println("CLIENT: Waiting for ready message..."); if((fromServer = getInput().readLine()).equals("READY")) { System.out.println("CLIENT: Ready message recieved."); getOutput().println("SENDING ARRAY LENGTH..."); System.out.println("CLIENT: Sending array length..."); System.out.println("CLIENT: " + imageData.length); getOutput().println(imageData.length); System.out.println("CLIENT: Array length sent."); getOutput().println("SENDING IMAGE..."); System.out.println("CLIENT: Sending image data..."); for(int i = 0; i < imageData.length; i++) { getOutput().println(imageData[i]); } System.out.println("CLIENT: Image data sent."); getOutput().println("SENDING IMAGE WIDTH..."); System.out.println("CLIENT: Sending image width..."); getOutput().println(width); System.out.println("CLIENT: Image width sent."); getOutput().println("SENDING IMAGE HEIGHT..."); System.out.println("CLIENT: Sending image height..."); getOutput().println(height); System.out.println("CLIENT: Image height sent..."); getOutput().println("SENDING IMAGE INFO..."); System.out.println("CLIENT: Sending image info..."); getOutput().println(fileName); System.out.println("CLIENT: Image info sent."); getOutput().println("FINISHED."); System.out.println("Image data sent successfully."); } if((fromServer = getInput().readLine()).equals("CLOSE DOWN")) { getOutput().close(); getInput().close(); getVSocket().close(); } */ } public String nameImage() throws Exception { String dateFormat = "yyyy-MM-dd HH-mm-ss"; Calendar cal = Calendar.getInstance(); SimpleDateFormat sdf = new SimpleDateFormat(dateFormat); String fileName = sdf.format(cal.getTime()); return fileName; } public void sendArrayLength(int length) throws Exception { getOutput().println("SENDING ARRAY LENGTH..."); getOutput().println(length); } public void sendWidth(int width) throws Exception { getOutput().println("SENDING IMAGE WIDTH..."); getOutput().println(width); } public void sendHeight(int height) throws Exception { getOutput().println("SENDING IMAGE HEIGHT..."); getOutput().println(height); } public void sendImageData(byte[] imageData) throws Exception { getOutput().println("SENDING IMAGE..."); for(int i = 0; i < imageData.length; i++) { getOutput().println(imageData[i]); } } public void sendImageInfo(String info) throws Exception { getOutput().println("SENDING IMAGE INFO..."); getOutput().println(info); } public void actionPerformed(ActionEvent a){ String message = null; try { if((message = getInput().readLine()).equals("PROCESSING...")) { if((message = getInput().readLine()).equals("IMAGE RECIEVED SUCCESSFULLY.")) { captureScreen(nameImage()); } } }catch(Exception e) { JOptionPane.showMessageDialog(null, "Problem: " + e); } } } SERVER: import java.awt.image.BufferedImage; import java.io.*; import java.net.*; import javax.imageio.ImageIO; /*IMPORTANT TODO: * 1. CLOSE ALL STREAMS AND SOCKETS WITHIN CLIENT AND SERVER! * 2. PLACE MAIN EXEC CODE IN A TIMED WHILE LOOP TO SEND FILE EVERY X SECONDS * */ public class ViewerServer { private ServerSocket vServer; private Socket vClient; private PrintWriter out; private BufferedReader in; private byte[] imageData; private int width; private int height; private String imageInfo; private int[] rgbData; private boolean active; public ViewerServer() throws Exception{ vServer = null; vClient = null; out = null; in = null; imageData = null; width = 0; height = 0; imageInfo = null; rgbData = null; active = true; } public void setVServer(ServerSocket vs) { vServer = vs; } public void setVClient(Socket vc) { vClient = vc; } public void setOutput(PrintWriter o) { out = o; } public void setInput(BufferedReader i) { in = i; } public void setImageData(byte[] imDat) { imageData = imDat; } public void setWidth(int w) { width = w; } public void setHeight(int h) { height = h; } public void setImageInfo(String im) { imageInfo = im; } public void setRGBData(int[] rd) { rgbData = rd; } public void setActive(boolean a) { active = a; } /***********************************************/ public ServerSocket getVServer() { return vServer; } public Socket getVClient() { return vClient; } public PrintWriter getOutput() { return out; } public BufferedReader getInput() { return in; } public byte[] getImageData() { return imageData; } public int getWidth() { return width; } public int getHeight() { return height; } public String getImageInfo() { return imageInfo; } public int[] getRGBData() { return rgbData; } public boolean getActive() { return active; } public void run() throws Exception{ connect(); setActive(true); while(getActive()) { recieve(); } close(); } public void recieve() throws Exception{ String clientStatus = null; int clientData = 0; // System.out.println("SERVER: Sending ready message..."); getOutput().println("READY"); // System.out.println("SERVER: Ready message sent."); if((clientStatus = getInput().readLine()).equals("SENDING IMAGE WIDTH...")) { setWidth(getInput().read()); System.out.println("Width: " + getWidth()); } if((clientStatus = getInput().readLine()).equals("SENDING IMAGE HEIGHT...")) { setHeight(getInput().read()); System.out.println("Height: " + getHeight()); } if((clientStatus = getInput().readLine()).equals("SENDING ARRAY LENGTH...")) { clientData = getInput().read(); setImageData(new byte[clientData]); System.out.println("Array length: " + clientData); } if((clientStatus = getInput().readLine()).equals("SENDING IMAGE INFO...")) { setImageInfo(getInput().readLine()); System.out.println("Image Info: " + getImageInfo()); } if((clientStatus = getInput().readLine()).equals("SENDING IMAGE...")) { for(int i = 0; i < getImageData().length; i++) { getImageData()[i] = ((byte)getInput().read()); } } if((clientStatus = getInput().readLine()).equals("FINISHED.")) { getOutput().println("PROCESSING..."); setRGBData(new int[getImageData().length]); for(int i = 0; i < getRGBData().length; i++) { getRGBData()[i] = getImageData()[i]; } BufferedImage image = null; image.setRGB(0, 0, getWidth(), getHeight(), getRGBData(), getWidth(), getHeight()); ImageIO.write(image, "png", new File(imageInfo + ".png")); //create an image file out of the screenshot getOutput().println("IMAGE RECIEVED SUCCESSFULLY."); } } public void connect() throws Exception { setVServer(new ServerSocket(4444)); //establish server connection // System.out.println("SERVER: Connection established."); setVClient(getVServer().accept()); //accept client connection request // System.out.println("SERVER: Accepted connection request."); setOutput(new PrintWriter(vClient.getOutputStream(), true)); //set up an output channel setInput(new BufferedReader(new InputStreamReader(vClient.getInputStream()))); //set up an input channel // System.out.println("SERVER: Created IO ports."); } public void close() throws Exception { getOutput().close(); getInput().close(); getVClient().close(); getVServer().close(); } }

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Webcast Q&A: Los Angeles Department of Building & Safety Lowers Customer Service Costs with Oracle WebCenter

- by Kellsey Ruppel

This week we had the fifth webcast in our WebCenter in Action webcast series, "Los Angeles Department of Building & Safety Lowers Customer Service Costs with Oracle WebCenter", where customers Giovani Dacumos and Minh Ong from the Los Angeles Department of Building & Safety (LADBS), and Sheetal Paranjpye and Rajiv Desai from Oracle Partner 3Di, shared how Oracle WebCenter is powering LADBS' externally facing website and providing a superior self-service experience for their customers. We asked the speakers to provide some dialogue for Q&A. Giovani Dacumos, Director of Systems and Minh Ong, LADBS Q: Did you run into any issues when integrating all of the different applications together?A: Yes. We did have issues integrating a secure sign on between the portal and other legacy applications. We used portlets and iframes to overcome those. This is a new technology for us and we are also learning as we go so there were a lot of challenges in developing and implementing our vision. Q: What has been the biggest benefit your end users have seen?A: The biggest benefit for our ends users is ease-of-use. We've given them a system that provided a new and improved source of information, as well as a very organized flow of transaction processing. It has made our online service very user friendly. Q: Was there any resistance internally when implementing the solution? If so, how did you overcome that?A: There was no internal resistance during the implementation, only challenges. As mentioned earlier, this is a new technology for us. We've come across issues that needed assistance from Oracle. Working with 3Di and Oracle has helped us tremendously to find solutions to our implementation issues. Q: Given the performance, what do you estimate to be the top end capacity of the system? A: With the current performance and architecture we have, we are able to support approx 300-400 concurrent users. We would need more hardware to support additional user load. Q: What's the overview or summary of feedback from the users interacting with the site?A: LADBS has a wide spectrum of customers, from simple users like homeowners to large construction firms. Anything new that we offer could be a little bit challenging for some, but overall, the customers liked it. They saw a huge improvement on the usability. Q: Can you describe the impressions about the site before and after the project within LADBS?A: The old site was using old technology and it was hard for us to keep on building into it as we got more business requirements. It made our application seem a bit complicated. It was confusing for our new customers to use and we've improved on this with the new site. It's now easier for them to complete their transactions and, at the same time, allowed us to provide more useful information. Sheetal Paranjpye and Rajiv Desai, 3Di Q: Did you run into any obstacles when implementing the solution?A: Yes we did run into some obstacles. One of the key show stoppers was the issue with portlet to portal communication. The GIS viewer (portlet) needed information to be passed to and from Permit LA (Portal), but we were able to get everything configured and up and working quickly! Q: Was there a lot of custom work that needed to be done for this particular solution?A: We have done some customizations where workflows/ Task flows are involved. Q: What do you think were the keys to success for rolling out WebCenter?A: Having a service oriented architecture and using portlets have been the key areas for rolling out Oracle WebCenter at LADBS. The Oracle WebCenter Content integration allows the flexibility to business users to maintain the content, which has really cut down on the reliance of IT, and employee productivity has increased as a result. If you missed the webcast, be sure to catch the replay to see a live demonstration of WebCenter in action! Los Angeles Department of Building & Safety Lowers Customer Service Costs with Oracle WebCenter from Oracle WebCenter

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How To Switch Back to Outlook 2007 After the 2010 Beta Ends

- by Matthew Guay

Are you switching back to Outlook 2007 after trying out Office 2010 beta? Here’s how you can restore your Outlook data and keep everything working fine after the switch. Whenever you install a newer version of Outlook, it will convert your profile and data files to the latest format. This makes them work the best in the newer version of Outlook, but may cause problems if you decide to revert to an older version. If you installed Outlook 2010 beta, it automatically imported and converted your profile from Outlook 2007. When the beta expires, you will either have to reinstall Office 2007 or purchase a copy of Office 2010. If you choose to reinstall Office 2007, you may notice an error message each time you open Outlook. Outlook will still work fine and all of your data will be saved, but this error message can get annoying. Here’s how you can create a new profile, import all of your old data, and get rid of this error message. Banish the Error Message with a New Profile To get rid of this error message, we need to create a new Outlook profile. First, make sure your Outlook data files are backed up. Your messages, contacts, calendar, and more are stored in a .pst file in your appdata folder. Enter the following in the address bar of an Explorer window to open your Outlook data folder, and replace username with your user name: C:\Users\username\AppData\Local\Microsoft\Outlook Copy the Outlook Personal Folders (.pst) files that contain your data. Its name is usually your email address, though it may have a different name. If in doubt, select all of the Outlook Personal Folders files, copy them, and save them in another safe place (such as your Documents folder). Now, let’s remove your old profile. Open Control Panel, and select Mail. In Windows Vista or 7, simply enter “Mail” in the search box and select the first entry. Click the “Show Profiles…” button. Now, select your Outlook profile, and click Remove. This will not delete your data files, but will remove them from Outlook. Press Yes to confirm that you wish to remove this profile. Open Outlook, and you will be asked to create a new profile. Enter a name for your new profile, and press Ok. Now enter your email account information to setup Outlook as normal. Outlook will attempt to automatically configure your account settings. This usually works for accounts with popular email systems, but if it fails to find your information you can enter it manually. Press finish when everything’s done. Outlook will now go ahead and download messages from your email account. In our test, we used a Gmail account that still had all of our old messages online. Those files are backed up in our old Outlook data files, so we can save time and not download them. Click the Send/Receive button on the bottom of the window, and select “Cancel Send/Receive”. Restore Your Old Outlook Data Let’s add our old Outlook file back to Outlook 2007. Exit Outlook, and then go back to Control Panel, and select Mail as above. This time, click the Data Files button. Click the Add button on the top left. Select “Office Outlook Personal Folders File (.pst)”, and click Ok. Now, select your old Outlook data file. It should be in the folder that opens by default; if not, browse to the backup copy we saved earlier, and select it. Press Ok at the next dialog to accept the default settings. Now, select the data file we just imported, and click “Set as Default”. Now, all of your old messages, appointments, contacts, and everything else will be right in Outlook ready for you. Click Ok, and then open Outlook to see the change. All of the data that was in Outlook 2010 is now ready to use in Outlook 2007. You won’t have to wait to re-download all of your emails from the server since everything’s still here ready to be used. And when you open Outlook, you won’t see any error messages, either! Conclusion Migrating your Outlook profile back to Outlook 2007 is fairly easy, and with these steps, you can avoid seeing an error message every time you open Outlook. With all your data in tact, you’re ready to get back to work instead of getting frustrated with Outlook. Many of us use webmail and keep all of our messages in the cloud, but even on broadband connections it can take a long time to download several gigabytes of emails. Similar Articles Productive Geek Tips Opening Attachments in Outlook 2007 by KeyboardQuickly Create Appointments from Tasks with Outlook 2007’s To-Do BarFix For Outlook 2007 Constantly Asking for Password on VistaPin Microsoft Outlook to the Desktop BackgroundOur Look at the LinkedIn Social Connector for Outlook TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Download Free MP3s from Amazon Awe inspiring, inter-galactic theme (Win 7) Case Study – How to Optimize Popular Wordpress Sites Restore Hidden Updates in Windows 7 & Vista Iceland an Insurance Job? Find Downloads and Add-ins for Outlook

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SharpDX: best practice for multiple RenderForms?

- by Rob Jellinghaus

I have an XNA app, but I really need to add multiple render windows, which XNA doesn't do. I'm looking at SharpDX (both for multi-window support and for DX11 / Metro / many other reasons). I decided to hack up the SharpDX DX11 MultiCubeTexture sample to see if I could make it work. My changes are pretty trivial. The original sample had: [STAThread] private static void Main() { var form = new RenderForm("SharpDX - MiniCubeTexture Direct3D11 Sample"); ... I changed this to: struct RenderFormWithActions { internal readonly RenderForm Form; // should just be Action but it's not in System namespace?! internal readonly Action RenderAction; internal readonly Action DisposeAction; internal RenderFormWithActions(RenderForm form, Action renderAction, Action disposeAction) { Form = form; RenderAction = renderAction; DisposeAction = disposeAction; } } [STAThread] private static void Main() { // hackity hack new Thread(new ThreadStart(() = { RenderFormWithActions form1 = CreateRenderForm(); RenderLoop.Run(form1.Form, () = form1.RenderAction(0)); form1.DisposeAction(0); })).Start(); new Thread(new ThreadStart(() = { RenderFormWithActions form2 = CreateRenderForm(); RenderLoop.Run(form2.Form, () = form2.RenderAction(0)); form2.DisposeAction(0); })).Start(); } private static RenderFormWithActions CreateRenderForm() { var form = new RenderForm("SharpDX - MiniCubeTexture Direct3D11 Sample"); ... Basically, I split out all the Main() code into a separate method which creates a RenderForm and two delegates (a render delegate, and a dispose delegate), and bundles them all together into a struct. I call this method twice, each time from a separate, new thread. Then I just have one RenderLoop on each new thread. I was thinking this wouldn't work because of the [STAThread] declaration -- I thought I would need to create the RenderForm on the main (STA) thread, and run only a single RenderLoop on that thread. Fortunately, it seems I was wrong. This works quite well -- if you drag one of the forms around, it stops rendering while being dragged, but starts again when you drop it; and the other form keeps chugging away. My questions are pretty basic: Is this a reasonable approach, or is there some lurking threading issue that might make trouble? My code simply duplicates all the setup code -- it makes a duplicate SwapChain, Device, Texture2D, vertex buffer, everything. I don't have a problem with this level of duplication -- my app is not intensive enough to suffer resource issues -- but nonetheless, is there a better practice? Is there any good reference for which DirectX structures can safely be shared, and which can't? It appears that RenderLoop.Run calls the render delegate in a tight loop. Is there any standard way to limit the frame rate of RenderLoop.Run, if you don't want a 400FPS app eating 100% of your CPU? Should I just Thread.Sleep(30) in the render delegate? (I asked on the sharpdx.org forums as well, but Alexandre is on vacation for two weeks, and my sister wants me to do a performance with my app at her wedding in three and a half weeks, so I'm mighty incented here! http://robjsoftware.org for details of what I'm building....)

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SQL SERVER – SHRINKFILE and TRUNCATE Log File in SQL Server 2008

- by pinaldave

Note: Please read the complete post before taking any actions. This blog post would discuss SHRINKFILE and TRUNCATE Log File. The script mentioned in the email received from reader contains the following questionable code: “Hi Pinal, If you could remember, I and my manager met you at TechEd in Bangalore. We just upgraded to SQL Server 2008. One of our jobs failed as it was using the following code. The error was: Msg 155, Level 15, State 1, Line 1 ‘TRUNCATE_ONLY’ is not a recognized BACKUP option. The code was: DBCC SHRINKFILE(TestDBLog, 1) BACKUP LOG TestDB WITH TRUNCATE_ONLY DBCC SHRINKFILE(TestDBLog, 1) GO I have modified that code to subsequent code and it works fine. But, are there other suggestions you have at the moment? USE [master] GO ALTER DATABASE [TestDb] SET RECOVERY SIMPLE WITH NO_WAIT DBCC SHRINKFILE(TestDbLog, 1) ALTER DATABASE [TestDb] SET RECOVERY FULL WITH NO_WAIT GO Configuration of our server and system is as follows: [Removed not relevant data]“ An email like this that suddenly pops out in early morning is alarming email. Because I am a dead, busy mind, so I had only one min to reply. I wrote down quickly the following note. (As I said, it was a single-minute email so it is not completely accurate). Here is that quick email shared with all of you. “Hi Mr. DBA [removed the name] Thanks for your email. I suggest you stop this practice. There are many issues included here, but I would list two major issues: 1) From the setting database to simple recovery, shrinking the file and once again setting in full recovery, you are in fact losing your valuable log data and will be not able to restore point in time. Not only that, you will also not able to use subsequent log files. 2) Shrinking file or database adds fragmentation. There are a lot of things you can do. First, start taking proper log backup using following command instead of truncating them and losing them frequently. BACKUP LOG [TestDb] TO DISK = N'C:\Backup\TestDb.bak' GO Remove the code of SHRINKING the file. If you are taking proper log backups, your log file usually (again usually, special cases are excluded) do not grow very big. There are so many things to add here, but you can call me on my [phone number]. Before you call me, I suggest for accuracy you read Paul Randel‘s two posts here and here and Brent Ozar‘s Post here. Kind Regards, Pinal Dave” I guess this post is very much clear to you. Please leave your comments here. As mentioned, this is a very huge subject; I have just touched a tip of the ice-berg and have tried to point to authentic knowledge. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Backup and Restore, SQL Data Storage, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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