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  • boost::multi_array resize exception?

    - by Glen
    I'm trying to figure out if the boost::multi_array constructor or resize method can throw a bad_alloc exception (or some other exception indicating the allocation or resize failed). I can't find this information in the documentation anywhere.

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  • How to split HTML code with javascript or JQuery

    - by Dean
    Hi I'm making a website using JSP and servlets and I have to now break up a list of radio buttons to insert a textarea and a button. I have got the button and textarea to hide and show when you click on the radio button it shows the text area and button. But this only appears at the top and when there are hundreds on the page this will become awkward so i need a way for it to appear underneath. Here is what my HTML looks like when complied: <form action="addSpotlight" method="POST"> <table> <tr><td><input type="radio" value="29" name="publicationIDs" ></td><td>A System For Dynamic Server Allocation in Application Server Clusters, IEEE International Symposium on Parallel and Distributed Processsing with Applications, 2008</td> </tr> <tr><td><input type="radio" value="30" name="publicationIDs" ></td><td>Analysing BitTorrent's Seeding Strategies, 7th IEEE/IFIP International Conference on Embedded and Ubiquitous Computing (EUC-09), 2009</td> </tr> <tr><td><input type="radio" value="31" name="publicationIDs" ></td><td>The Effect of Server Reallocation Time in Dynamic Resource Allocation, UK Performance Engineering Workshop 2009, 2009</td> </tr> <tr><td><input type="radio" value="32" name="publicationIDs" ></td><td>idk, hello, 1992</td> </tr> <tr><td><input type="radio" value="33" name="publicationIDs" ></td><td>sad, safg, 1992</td> </tr> <div class="abstractWriteup"><textarea name="abstract"></textarea> <input type="submit" value="Add Spotlight"></div> </table> </form> Now here is what my JSP looks like: <form action="addSpotlight" method="POST"> <table> <%int i = 0; while(i<ids.size()){%> <tr><td><input type="radio" value="<%=ids.get(i)%>" name="publicationIDs" ></td><td><%=info.get(i)%></td> </tr> <%i++; }%> <div class="abstractWriteup"><textarea name="abstract"></textarea> <input type="submit" value="Add Spotlight"></div> </table> </form> Thanks in Advance Dean

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  • Chaining animations and memory management

    - by bryan1967
    Hey Everyone, Got a question. I have a subclassed UIView that is acting as my background where I am scrolling the ground. The code is working really nice and according to the Instrumentation, I am not leaking nor is my created and still living Object allocation growing. I have discovered else where in my application that adding an animation to a UIImageView that is owned by my subclassed UIView seems to bump up my retain count and removing all animations when I am done drops it back down. My question is this, when you add an animation to a layer with a key, I am assuming that if there is already a used animation in that entry position in the backing dictionary that it is released and goes into the autorelease pool? For example: - (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag { NSString *keyValue = [theAnimation valueForKey:@"name"]; if ( [keyValue isEqual:@"step1"] && flag ) { groundImageView2.layer.position = endPos; CABasicAnimation *position = [CABasicAnimation animationWithKeyPath:@"position"]; position.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; position.toValue = [NSValue valueWithCGPoint:midEndPos]; position.duration = (kGroundSpeed/3.8); position.fillMode = kCAFillModeForwards; [position setDelegate:self]; [position setRemovedOnCompletion:NO]; [position setValue:@"step2-1" forKey:@"name"]; [groundImageView2.layer addAnimation:position forKey:@"positionAnimation"]; groundImageView1.layer.position = startPos; position = [CABasicAnimation animationWithKeyPath:@"position"]; position.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; position.toValue = [NSValue valueWithCGPoint:midStartPos]; position.duration = (kGroundSpeed/3.8); position.fillMode = kCAFillModeForwards; [position setDelegate:self]; [position setRemovedOnCompletion:NO]; [position setValue:@"step2-2" forKey:@"name"]; [groundImageView1.layer addAnimation:position forKey:@"positionAnimation"]; } else if ( [keyValue isEqual:@"step2-2"] && flag ) { groundImageView1.layer.position = midStartPos; CABasicAnimation *position = [CABasicAnimation animationWithKeyPath:@"position"]; position.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; position.toValue = [NSValue valueWithCGPoint:endPos]; position.duration = 12; position.fillMode = kCAFillModeForwards; [position setDelegate:self]; [position setRemovedOnCompletion:NO]; [position setValue:@"step1" forKey:@"name"]; [groundImageView1.layer addAnimation:position forKey:@"positionAnimation"]; } } This chains animations infinitely, and as I said one it is running the created and living object allocation doesn't change. I am assuming everytime I add an animation the one that exists in that key position is released. Just wondering I am correct. Also, I am relatively new to Core Animation. I tried to play around with re-using the animations but got a little impatient. Is it possible to reuse animations? Thanks! Bryan

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  • C Programming: malloc() for a 2D array (using pointer-to-pointer)

    - by vikramtheone
    Hi Guys, yesterday I had posted a question: How should I pass a pointer to a function and allocate memory for the passed pointer from inside the called function? From the answers I got, I was able to understand what mistake I was doing. I'm facing a new problem now, can anyone help out with this? I want to dynamically allocate a 2D array, so I'm passing a Pointer-to-Pointer from my main() to another function called alloc_2D_pixels(...), where I use malloc(...) and for(...) loop to allocate memory for the 2D array. Well, after returning from the alloc_2D_pixels(...) function, the pointer-to-pointer still remains NULL, so naturally, when I try accessing or try to free(...) the Pointer-to-Pointer, the program hangs. Can anyone suggest me what mistakes I'm doing here? Help!!! Vikram SOURCE: main() { unsigned char **ptr; unsigned int rows, cols; if(alloc_2D_pixels(&ptr, rows, cols)==ERROR) // Satisfies this condition printf("Memory for the 2D array not allocated"); // NO ERROR is returned if(ptr == NULL) // ptr is NULL so no memory was allocated printf("Yes its NULL!"); // Because ptr is NULL, with any of these 3 statements below the program HANGS ptr[0][0] = 10; printf("Element: %d",ptr[0][0]); free_2D_alloc(&ptr); } signed char alloc_2D_pixels(unsigned char ***memory, unsigned int rows, unsigned int cols) { signed char status = NO_ERROR; memory = malloc(rows * sizeof(unsigned char** )); if(memory == NULL) { status = ERROR; printf("ERROR: Memory allocation failed!"); } else { int i; for(i = 0; i< cols; i++) { memory[i] = malloc(cols * sizeof(unsigned char)); if(memory[i]==NULL) { status = ERROR; printf("ERROR: Memory allocation failed!"); } } } // Inserted the statements below for debug purpose only memory[0][0] = (unsigned char)10; // I'm able to access the array from printf("\nElement %d",memory[0][0]); // here with no problems return status; } void free_2D_pixels(unsigned char ***ptr, unsigned int rows) { int i; for(i = 0; i < rows; i++) { free(ptr[i]); } free(ptr); }

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  • How can a 1Gb Java heap on a 64bit machine use 3Gb of VIRT space?

    - by Graeme Moss
    I run the same process on a 32bit machine as on a 64bit machine with the same memory VM settings (-Xms1024m -Xmx1024m) and similar VM version (1.6.0_05 vs 1.6.0_16). However the virtual space used by the 64bit machine (as shown in top under "VIRT") is almost three times as big as that in 32bit! I know 64bit VMs will use a little more memory for the larger references, but how can it be three times as big? Am I reading VIRT in top incorrectly? Full data shown below, showing top and then the result of jmap -heap, first for 64bit, then for 32bit. Note the VIRT for 64bit is 3319m for 32bit is 1220m. * 64bit * PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 22534 agent 20 0 3319m 163m 14m S 4.7 2.0 0:04.28 java $ jmap -heap 22534 Attaching to process ID 22534, please wait... Debugger attached successfully. Server compiler detected. JVM version is 10.0-b19 using thread-local object allocation. Parallel GC with 4 thread(s) Heap Configuration: MinHeapFreeRatio = 40 MaxHeapFreeRatio = 70 MaxHeapSize = 1073741824 (1024.0MB) NewSize = 2686976 (2.5625MB) MaxNewSize = -65536 (-0.0625MB) OldSize = 5439488 (5.1875MB) NewRatio = 2 SurvivorRatio = 8 PermSize = 21757952 (20.75MB) MaxPermSize = 88080384 (84.0MB) Heap Usage: PS Young Generation Eden Space: capacity = 268500992 (256.0625MB) used = 247066968 (235.62142181396484MB) free = 21434024 (20.441078186035156MB) 92.01715277089181% used From Space: capacity = 44695552 (42.625MB) used = 0 (0.0MB) free = 44695552 (42.625MB) 0.0% used To Space: capacity = 44695552 (42.625MB) used = 0 (0.0MB) free = 44695552 (42.625MB) 0.0% used PS Old Generation capacity = 715849728 (682.6875MB) used = 0 (0.0MB) free = 715849728 (682.6875MB) 0.0% used PS Perm Generation capacity = 21757952 (20.75MB) used = 16153928 (15.405586242675781MB) free = 5604024 (5.344413757324219MB) 74.24378912132907% used * 32bit * PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 30168 agent 20 0 1220m 175m 12m S 0.0 2.2 0:13.43 java $ jmap -heap 30168 Attaching to process ID 30168, please wait... Debugger attached successfully. Server compiler detected. JVM version is 14.2-b01 using thread-local object allocation. Parallel GC with 8 thread(s) Heap Configuration: MinHeapFreeRatio = 40 MaxHeapFreeRatio = 70 MaxHeapSize = 1073741824 (1024.0MB) NewSize = 1048576 (1.0MB) MaxNewSize = 4294901760 (4095.9375MB) OldSize = 4194304 (4.0MB) NewRatio = 8 SurvivorRatio = 8 PermSize = 16777216 (16.0MB) MaxPermSize = 67108864 (64.0MB) Heap Usage: PS Young Generation Eden Space: capacity = 89522176 (85.375MB) used = 80626352 (76.89128112792969MB) free = 8895824 (8.483718872070312MB) 90.0629940005033% used From Space: capacity = 14876672 (14.1875MB) used = 14876216 (14.187065124511719MB) free = 456 (4.3487548828125E-4MB) 99.99693479832048% used To Space: capacity = 14876672 (14.1875MB) used = 0 (0.0MB) free = 14876672 (14.1875MB) 0.0% used PS Old Generation capacity = 954466304 (910.25MB) used = 10598496 (10.107513427734375MB) free = 943867808 (900.1424865722656MB) 1.1104107034039412% used PS Perm Generation capacity = 16777216 (16.0MB) used = 11366448 (10.839889526367188MB) free = 5410768 (5.1601104736328125MB) 67.74930953979492% used

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  • Out of memory error

    - by Rahul Varma
    Hi, I am trying to retrieve a list of images and text from a web service. I have first coded to get the images to a list using Simple Adapter. The images are getting displayed the app is showing an error and in the Logcat the following errors occur... 04-26 10:55:39.483: ERROR/dalvikvm-heap(1047): 8850-byte external allocation too large for this process. 04-26 10:55:39.493: ERROR/(1047): VM won't let us allocate 8850 bytes 04-26 10:55:39.563: ERROR/AndroidRuntime(1047): Uncaught handler: thread Thread-96 exiting due to uncaught exception 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): java.lang.OutOfMemoryError: bitmap size exceeds VM budget 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method) 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:451) 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv.loadImageFromUrl(AsyncImageLoaderv.java:57) 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv$2.run(AsyncImageLoaderv.java:41) 04-26 10:55:40.393: ERROR/dalvikvm-heap(1047): 14600-byte external allocation too large for this process. 04-26 10:55:40.403: ERROR/(1047): VM won't let us allocate 14600 bytes 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): Uncaught handler: thread Thread-93 exiting due to uncaught exception 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): java.lang.OutOfMemoryError: bitmap size exceeds VM budget 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method) 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:451) 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv.loadImageFromUrl(AsyncImageLoaderv.java:57) 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv$2.run(AsyncImageLoaderv.java:41) 04-26 10:55:40.594: INFO/Process(584): Sending signal. PID: 1047 SIG: 3 Here's the coding in the adapter... final ImageView imageView = (ImageView) rowView.findViewById(R.id.image); AsyncImageLoaderv asyncImageLoader=new AsyncImageLoaderv(); Bitmap cachedImage = asyncImageLoader.loadDrawable(imgPath, new AsyncImageLoaderv.ImageCallback() { public void imageLoaded(Bitmap imageDrawable, String imageUrl) { imageView.setImageBitmap(imageDrawable); } }); imageView.setImageBitmap(cachedImage); .......... ........... ............ //To load the image... public static Bitmap loadImageFromUrl(String url) { InputStream inputStream;Bitmap b; try { inputStream = (InputStream) new URL(url).getContent(); BitmapFactory.Options bpo= new BitmapFactory.Options(); bpo.inSampleSize=2; b=BitmapFactory.decodeStream(inputStream, null,bpo ); return b; } catch (IOException e) { throw new RuntimeException(e); } // return null; } Please tell me how to fix the error....

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  • Can't access annotation property of subclassed uibutton - editted

    - by Tzur Gazit
    Below is my original question. I kept investigating and found out that the type of the button I allocate is of type UIButton instead of the subclassed type CustomButton. the capture below is the allocation of the button and connection to target. I break immediately after the allocation and check the button type (po rightButton at the debugger console). It's turned out tht the type is UIButton instead of CustomButton. CustomButton* rightButton = [CustomButton buttonWithType:UIButtonTypeDetailDisclosure]; [rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside]; I have a mapView to which I add annotations. The pin's callout have a button (rightCalloutAccessoryView). In order to be able to display various information when the button is pushed, i've subclassed uibutton and added a class called "Annotation". @interface CustomButton : UIButton { NSIndexPath *indexPath; Annotation *mAnnotation; } @property (nonatomic, retain) NSIndexPath *indexPath; @property (nonatomic, copy) Annotation *mAnnotation; - (id) setAnnotation2:(Annotation *)annotation; @end Here is "Annotation": @interface Annotation : NSObject <MKAnnotation> { CLLocationCoordinate2D coordinate; NSString *mPhotoID; NSString *mPhotoUrl; NSString *mPhotoName; NSString *mOwner; NSString *mAddress; } @property (nonatomic, assign) CLLocationCoordinate2D coordinate; @property (nonatomic, copy) NSString *mPhotoID; @property (nonatomic, copy) NSString *mPhotoUrl; @property (nonatomic, copy) NSString *mPhotoName; @property (nonatomic, copy) NSString *mOwner; @property (nonatomic, copy) NSString *mAddress; - (id) initWithCoordinates:(CLLocationCoordinate2D)coordinate; - (id) setPhotoId:(NSString *)id url:(NSString *)url owner:(NSString *)owner address:(NSString *)address andName:(NSString *)name; @end I want to set the annotation property of the uibutton at - (MKAnnotationView *)mapView:(MKMapView *)pMapView viewForAnnotation:(id )annotation, in order to refer to it at the button push handler (-(IBAction) showDetails:(id)sender). The problem is that I can't set the annotation property of the button. I get the following message at run time: 2010-04-27 08:15:11.781 HotLocations[487:207] *** -[UIButton setMAnnotation:]: unrecognized selector sent to instance 0x5063400 2010-04-27 08:15:11.781 HotLocations[487:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UIButton setMAnnotation:]: unrecognized selector sent to instance 0x5063400' 2010-04-27 08:15:11.781 HotLocations[487:207] Stack: ( 32080987, 2472563977, 32462907, 32032374, 31884994, 55885, 30695992, 30679095, 30662137, 30514190, 30553882, 30481385, 30479684, 30496027, 30588515, 63333386, 31865536, 31861832, 40171029, 40171226, 2846639 ) I appreciate the help. Tzur.

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  • Are there any good books to learn C++ if you already know Java and C#

    - by JF LR
    Hi, I would like to know if you have any good books that teach C++ programming without repeating basic stuff. In fact, I already well know Java and C#. I also have a basic knowledge in C and assembly, so I understand a little bit pointer arithmetic, manual memory management and heap based allocation. I was looking at O'Reilly's C++ in a Nutshell and was also wondering if this book would be a good choice. Thank you

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  • Using Kal calendar without doing the initialization (and so on) in the AppDelegate

    - by testing
    I'm using the Kal calendar. For the code shown below I'm referring to the Holiday example. In this example the allocation and initialization of Kal is done in the applicationDidFinishLaunching in the AppDelegate. The UITableViewDelegate protocol (e.g. didSelectRowAtIndexPath) is also positioned in the AppDelegate class. The AppDelegate: #import "HolidayAppDelegate.h" #import "HolidaySqliteDataSource.h" #import "HolidaysDetailViewController.h" ## Heading ###import "Kal.h" @implementation HolidayAppDelegate @synthesize window; - (void)applicationDidFinishLaunching:(UIApplication *)application { kal = [[KalViewController alloc] init]; kal.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Today" style:UIBarButtonItemStyleBordered target:self action:@selector(showAndSelectToday)] autorelease]; kal.delegate = self; dataSource = [[HolidaySqliteDataSource alloc] init]; kal.dataSource = dataSource; // Setup the navigation stack and display it. navController = [[UINavigationController alloc] initWithRootViewController:kal]; [window addSubview:navController.view]; [window makeKeyAndVisible]; } // Action handler for the navigation bar's right bar button item. - (void)showAndSelectToday { [kal showAndSelectDate:[NSDate date]]; } #pragma mark UITableViewDelegate protocol conformance // Display a details screen for the selected holiday/row. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { Holiday *holiday = [dataSource holidayAtIndexPath:indexPath]; HolidaysDetailViewController *vc = [[[HolidaysDetailViewController alloc] initWithHoliday:holiday] autorelease]; [navController pushViewController:vc animated:YES]; } #pragma mark - - (void)dealloc { [kal release]; [dataSource release]; [window release]; [navController release]; [super dealloc]; } @end I don't want to put this into the AppDelegate, because there could be some overlapping code with other views. It should be a separate "component" which I can call and put on the stack. In my navigation based project I have a main view, the RootViewController. From there I want to push the Kal view on the stack. Currently I'm pushing an additional ViewController on the stack. In the viewWillAppear method from this ViewController I do the things shown in the code above. The following problems appear: Navigation back has to be done two times (one for the Kal calendar, one for my created view) Navigation to my main view is not possible anymore In the moment I don't know where to put this code. So the question is where to put the methods for allocation/initialization as well as the methods for the UITableViewDelegate protocol.

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  • Getting $_POST variable from table

    - by Sakamoto Kazuma
    I'm trying to build a sort of resource allocation form. I'd like to be able to print a table from a database, and then allow users to click on each cell that they would like to reserve. Also, being able to drag and select multiple cells. Then send all of this via $_POST to another php script. Problem is, I have no idea where to start. Any suggestions?

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  • Android/Java Append String + int

    - by xger86x
    Hi, i have a question, what is the best way to append ints and Strings to build a new String? In the allocation debug tool i see too much allocations if i use the operator +. But i have tried also with StringBuffer and there are still too much allocations. Anyone can help me? Thanks

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  • iPhone memory management, a newbie question

    - by Reuven
    Hi, I've seen in (Apple) sample code two types of ways of allocation memory, and am not sure I understand the difference and resulting behavior. // FAILS NSMutableArray *anArray = [NSMutableArray array]; [anArray release]; // WORKS NSMutableArray *anArray1 = [[NSMutableArray alloc] init]; [anArray release]; By "FAILS" I mean I get crashes/runtime warnings etc., and not always as soon as I call the release... Any explanation appreciated. Thanks

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  • Increasing JRE Memory Usage in Eclipse

    - by gMcizzLe
    I read in another question that you can increase the JRE memory allowance for an app through Window - Preferences in Eclipse, but I can't seem to find anything related to heap memory allocation. Editing -xms/xmx values in eclipse.ini doesn't help since those are for Eclipse itself.

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  • C++ Performance/memory optimization guidelines

    - by ML
    Hi All, Does anyone have a resource for C++ memory optimization guidelines? Best practices, tuning, etc? As an example: Class xxx { public: xxx(); virtual ~xxx(); protected: private: }; Would there be ANY benefit on the compiler or memory allocation to get rid of protected and private since there there are no items that are protected and private in this class?

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  • C++ - Is it possible to implement memory leak testing in a unit test?

    - by sevaxx
    I'm trying to implement unit testing for my code and I'm having a hard time doing it. Ideally I would like to test some classes not only for good functionality but also for proper memory allocation/deallocation. I wonder if this check can be done using a unit testing framework. I am using Visual Assert btw. I would love to see some sample code , if possible !

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  • Applications of concurrent queues and stacks in .NET 4

    - by Jon Harrop
    .NET 4 includes new concurrent data structures. The Bag and Dictionary collections have obvious applications but I cannot see any use for the Queue and Stack data structures. What are people using these for? Also, I've noticed that the design based upon linked lists incurs a lot of allocation and that destroys scalability. This is surprising given that the sole purpose of these collections is multicore programming. Is this an inherent limitation or are they just badly implemented?

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  • What the best multi-thread application debugger for C++ apps.

    - by Coredumped
    I'm looking for a good multi-thread-aware debugger, capable of showing performance charts of application threads on Linux, don't know if such a thing exists, perhaps as a Eclipse plugin. The idea would be to track per thread memory allocation a CPU usage as well as being able to interrupt a thread and examine its stack trace, local vars, etc. It does not have to be an eclipse plugin or a free tool, do any of you have heard of something similar?

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  • Java execution details in System.out

    - by John
    As I remember there is a magic command line option in Java that turn on writing of operations that are currently executed to console. The output was looked like byte code. I do not mean -verbose, because it prints only class loading, while this option outputs information like memory allocation etc.

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  • storage classes

    - by ramyabanu
    what is the difference between a variable declared as an auto and static? what is the difference in allocation of memory in auto and static variable? why do we use static with array of pointers and what is its significance?

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