Search Results

Search found 15543 results on 622 pages for 'memory editing'.

Page 126/622 | < Previous Page | 122 123 124 125 126 127 128 129 130 131 132 133  | Next Page >

• iPhone, Convenience Method or Alloc / Release?

  - by fuzzygoat

  Whilst developing for the iPhone I had a stubborn memory leak that I eventually tracked down to NSXMLParser. However whilst looking for that it got me thinking about maybe changing a lot of my convenience methods to alloc/release. Is there any good reason for doing that? In a large app I can see how releasing memory yourself quickly is a better idea, but in a small app is there any other difference between the two methods. NSNumber *numberToAdd = [NSNumber numberWithInt:intValue]; dostuff ... OR NSNumber *numberToAdd = [[NSNumber alloc] initWithInt:intValue]; doStuff ... [numberToAdd release]; cheers gary.

  Read the article

• Does Python's shelve module use memory-mapped IO?

  - by Matt Luongo

  Does anyone know if Python's shelve module uses memory-mapped IO? Maybe that question is a bit misleading. I realize that shelve uses an underlying dbm-style module to do its dirty work. What are the chances that the underlying module uses mmap? I'm prototyping a datastore, and while I realize premature optimization is generally frowned upon, this could really help me understand the trade-offs involved in my design.

  Read the article

• Modifying documents in memory in yaml-cpp

  - by Mike Mueller

  I want to read a YML document, filter it by modifying some nodes in memory, and then spit it back out with an emitter. The problem is that YAML::Node appears to be designed to be read-only. Is there a way to replace a node's value (with a scalar in this case) that I'm missing?

  Read the article

• Decoding subsampled bitmaps in Android

  - by hgpc

  I decode bitmaps from the SD card using BitmapFactory.decodeFile. Sometimes the bitmaps are bigger than what the application needs or that the heap allows, so I use BitmapFactory.Options.inSampleSize to request a subsampled (smaller) bitmap. The problem is that the platform does not enforce the exact value of inSampleSize, and I sometimes end up with a bitmap either too small, or still too big for the available memory. From http://developer.android.com/reference/android/graphics/BitmapFactory.Options.html#inSampleSize: Note: the decoder will try to fulfill this request, but the resulting bitmap may have different dimensions that precisely what has been requested. Also, powers of 2 are often faster/easier for the decoder to honor. How should I decode bitmaps from the SD card to get a bitmap of the exact size I need while consuming as little memory as possible to decode it?

  Read the article

• What Simple Changes Made the Biggest Improvements to Your Delphi Programs

  - by lkessler

  I have a Delphi 2009 program that handles a lot of data and needs to be as fast as possible and not use too much memory. What small simple changes have you made to your Delphi code that had the biggest impact on the performance of you program by noticeably reducing execution time or memory use? Thanks everyone for all your answers. Many great tips. For completeness, I'll post a few important articles on Delphi optimization that I found. Before you start optimizing Delphi code at About.com Speed and Size: Top 10 Tricks also at About.com Code Optimization Fundamentals and Delphi Optimization Guidelines at High Performance Delphi, relating to Delphi 7 but still very pertinent.

  Read the article

• AudioQueue in-memory playback example

  - by Jonesy

  Does anybody know of any examples using AudioQueue that play from an in-memory source? All the examples I can find play from files (using AudioFileReadPackets) but in my particular case I am generating the data myself in realtime so ideally, I want to enqueue the data myself rather than sucking it out of a file using the callback. Any help much appreciated.

  Read the article

• What version control system is best designed to *prevent* concurrent editing?

  - by Fred Hamilton

  We've been using CVS (with TortoiseCVS interface) for years for both source control and wide-ranging document control (including binaries such as Word, Excel, Framemaker, test data, simulation results, etc.). Unlike typical version control systems, 99% of the time we want to prevent concurrent editing - when a user starts editing a file, the pre-edit version of the file becomes read only to everyone else. Many of the people who will be using this are not programmers or even that computer savvy, so we're also looking for a system that let's people simply add documents to the repository, check out and edit a document (unless someone else is currently editing it), and check it back in with a minimum of fuss. We've gotten this to work reasonably well with CVS + TortoiseCVS, but we're now considering Subversion and Mercurial (and open to others if they're a better fit) for their better version tracking, so I was wondering which one supported locking files most transparently. For example, we'd like exclusive locking enabled as the default, and we want to make it as difficult as possible for someone to accidentally start editing a file that someone else has checked out. For example when someone checks out a file for editing, it checks with the master database first even if they have not recently updated their sandbox. Maybe it even won't let a user check out a document if it's off the network and can't check in with the mothership.

  Read the article

• Android OutOfMemoryError - Loading JSON File

  - by jeremynealbrown

  The app I am working on needs to read a JSON file that may be anywhere from 1.5 to 3 MB in size. It seems to have no problem opening the file and converting the data to a string, but when it attempts to convert the string to a JSONArray, OutOfMemoryErrors are thrown. The exceptions look something like this: E/dalvikvm-heap( 5307): Out of memory on a 280-byte allocation. W/dalvikvm( 5307): Exception thrown (Ljava/lang/OutOfMemoryError;) while throwing internal exception (Ljava/lang/OutOfMemoryError;) One strange thing about this is that the crash only occurs every 2nd or 3rd time the app is run, leaving me to believe that the memory consumed by the app is not being garbage collected each time the app closes. Any insight into how I might get around this issue would be greatly appreciated. I am open to the idea of loading the file in chunks, but I'm not quite sure what the best approach is for such a task. Thank you

  Read the article

• Out of memory hash sort in Perl

  - by syker

  I am sorting a hash in Perl. I encountered an Out of memory error when running my Perl Script: foreach $key (sort (keys(%hash))) { .... } How do I sort a hash that has tons of data?

  Read the article

• Linux memory fragmentation

  - by Raghu

  Hi all, Is there a way to detect memory fragmentation on linux ? This is because on some long running servers I have noticed performance degradation and only after I restart process I see better performance. I noticed it more when using linux huge page support -- are huge pages in linux more prone to fragmentation ? I have looked at /proc/buddyinfo in particular. I want to know whether there are any better ways to look at it.

  Read the article

• Correct Memory Management for [string UTF8String]

  - by madmik3

  I'm somewhat new to objective-c and I'm not sure what the correct memory management for this code is. const unsigned char * data =(const unsigned char *) [string UTF8String]; When I call free on data I get an error. Do I need to clean up after this call? thanks!

  Read the article

• jqGrid editForm problem

  - by PaulStanek

  Hi, I have simply jqgrid definitions like this: jQuery("#C2").jqGrid({ url: '/Customers.mvc/GetGridData/', datatype: 'json', autowidth: 'true', mtype: 'GET', colNames: ['Nazwa', 'Symbol', 'Status', 'Miasto', 'Ulica', 'Budynek', 'Mieszkanie', 'Koda pocztowy', 'Domena', ' '], colModel: [ { name: 'Name', index: 'Name', align: 'left', editable: 'true', edittype: 'text' }, { name: 'Symbol', index: 'Symbol', align: 'left', editable: 'true', edittype: 'text' }, { name: 'Status', index: 'Status', align: 'left', editable: 'true', edittype: 'text' }, { name: 'City', index: 'City', align: 'left', editable: 'true', edittype: 'text' }, { name: 'Street', index: 'Street', align: 'left', editable: 'true', edittype: 'text' }, { name: 'Building', index: 'Building', align: 'left', editable: 'true', edittype: 'text' }, { name: 'Flat', index: 'Flat', align: 'left', editable: 'true', edittype: 'text'}, { name: 'PostalCode', index: 'PostalCode', align: 'left', editable: 'true', edittype: 'text' }, { name: 'Domain', index: 'Domain', align: 'left', editable: 'true', edittype: 'text'}, { name: 'ExtId', index: 'ExtId', align: 'left', editable: 'true', edittype: 'text'}, ], pager: jQuery('#C2_p'), rowNum: 30, rowList: [20, 30, 50], sortname: 'Name', sortorder: 'Asc', viewrecords: 'true', width: '80%', height: '100%', editurl: '/Customers.mvc/SaveCustomer/', postData: { gridId: 'Customers' }, caption: 'Klienci2' }).navGrid('#C2_p', { edit: true, add: true, del: true, search: false, refresh: false }, {},//Options for the Edit Dialog {},//Options for the Add Dialog {}//Options for D ); }); And when i call edit/add form it's appears without text edit inputs. I'm using jquery 1.3.2 and jqgrid 3.6.4 Any help will be appreciated.

  Read the article

• Edit a video to embed a bitmap.

  - by Rajkumar R

  I would like to edit a video so that i can embed a small bitmap image at any corner. The bitmap image has to be replaced with another image, for every two video frames. If somehow it is possible to covert a group of pictures into slideshow video then i want that video to be embedded at the corner of the main video. The size of the bitmap is about the size of a channel logo and that is exact space it will occupy in the video. Please guide me in accomplishing. Is there any existing libraries available to do this. I am working on .Net 4 platform but i do

  Read the article

• Android Keep Activity from Dieing

  - by GuyNoir

  The main Activity I use in my Android application uses a fair amount of memory, meaning that on a less powerful phone, it is susceptible to being killed off when not at the front. Normally this is fine, but it also happens when I am still inside my application, but have a different activity at the top of the stack (such as a preference activity). Obviously it's a problem if my application is killed while the user is still running it. Is there any way to disable the OS's ability to kill off the application for low memory problems? Thanks.

  Read the article

• How to analyze dump file from delphi dll?

  - by Yann

  I'm an escalation engineer on a product which use both c# and delphi 2006 code. In most cases c# issues are debugged with windbg and delphi 2006 issues with eurekalog. But when the issue is a delphi memory usage, eurekalog doesn't give enough information to fix the issue and the only thing i have to debug it is a full memory dump file. I cannot (or i don't know how to) load symbol file in windbg because it is a .map file and not a .pdb file. So my questions are: Does anyone know how to load symbol from .map file in windbg? (Converting .map to .pdb or other) Does anyone know a tool to analyze dump file for delphi application?

  Read the article

• how to generate thread dump java on out of memory error

  - by Jigar

  does java 6 generate thread dump in addition to heap dump (java_pid14941.hprof) this is what happened to one of my applications. java.lang.OutOfMemoryError: GC overhead limit exceeded Dumping heap to java_pid14941.hprof ... I did find ava_pid14941.hprof in working directory, but didn't find any file which contains thread dump. I need to know what all the threads were doing when I got this OutOfMemory error. Is there any configuration option which will generate thread dump in addition to heap dump on out of memory exception?

  Read the article

• Stack overflow - how to increase memory allocation to program

  - by Vaibhav

  When I try to initialize a 3D array of size 300*300*4 in a C program, my program stops running and reports stack overflow error. The system I am using has 3GB RAM, which should be sufficeint. Is there any way to increase memory allocated to a program? I am using Dev C++ on Windows Vista.

  Read the article

• How to release memory created from CFStringTokenizerCreate?

  - by Boon

  I use CFRelease to release the CFStringTokenizerRef obtained from CFStringTokenizerCreate call. But instruments is reporting memory leak at around this area. Am I missing something? CFStringTokenizerRef tokenRef = CFStringTokenizerCreate(NULL, (CFStringRef)contents, CFRangeMake(0, contents.length), kCFStringTokenizerUnitWordBoundary, NULL); CFStringTokenizerTokenType tokenType; // leak reported here while ((tokenType = CFStringTokenizerAdvanceToNextToken(tokenRef)) != kCFStringTokenizerTokenNone) } CFRelease(tokenRef);

  Read the article

• shift happens videos

  - by hasan

  im sure you guys must have seen the shift happens video series. here's a link to them : http://www.youtube.com/results?search_query=shift+happens&search_type=&aq=f also, the recent hungry beast video about google, which can be found here: (SO doesnt allow new users more than one hyperlink, so please search on youtube for this one) what i'd like to ask you guys is this: is there a program that enables such videos to be made quickly or is it really just the creative genius of the respective authors? i think vidoes like these are extremely useful when you want to make an impact and would find many uses for such a program in my line of work. im hoping somebody can point me in the right direction. ps. i DO know of animoto, so please dont suggest that :P the problem with animoto is that it doesnt allow text manipulation like these videos. to be fair, that is a great product in itself, but im sure if you take a look, you'll see the difference that im talking abuot.

  Read the article

• Dynamically allocated structure and casting.

  - by Simone Margaritelli

  Let's say I have a first structure like this: typedef struct { int ivalue; char cvalue; } Foo; And a second one: typedef struct { int ivalue; char cvalue; unsigned char some_data_block[0xFF]; } Bar; Now let's say I do the following: Foo *pfoo; Bar *pbar; pbar = new Bar; pfoo = (Foo *)pbar; delete pfoo; Now, when I call the delete operator, how much memory does it free? sizeof(int) + sizeof(char) Or sizeof(int) + sizeof(char) + sizeof(char) * 0xFF ? And if it's the first case due to the casting, is there any way to prevent this memory leak from happening? Note: please don't answer "use C++ polymorphism" or similar, I am using this method for a reason.

  Read the article

• MySQL create memory leak in Tomcat

  - by mabuzer

  I have set a JDBCRealm for web-app inside tomcat, and when I reload it I got this from tomcat: SEVERE: A web application registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered. I use tomcat 6.0.24, with MySQL Connector 5.1.10,,,

  Read the article

• Out of memory exception - Windows service stop

  - by user171523

  I have a timer within my Windows service which is built using C# 2.0. We are in the process of designing the Exception handling. Since it is Timer runs on its own thread we would like to handle the out of memory exception. When that occurs we would like to stop the service. How can we gently stop the service when that happens on the different thread ?

  Read the article

• operator+ overload returning object causing memory leaks, C++

  - by lampshade

  The problem i think is with returing an object when i overload the + operator. I tried returning a reference to the object, but doing so does not fix the memory leak. I can comment out the two statements: dObj = dObj + dObj2; and cObj = cObj + cObj2; to free the program of memory leaks. Somehow, the problem is with returning an object after overloading the + operator. #include <iostream> #include <vld.h> using namespace std; class Animal { public : Animal() {}; virtual void eat() = 0 {}; virtual void walk() = 0 {}; }; class Dog : public Animal { public : Dog(const char * name, const char * gender, int age); Dog() : name(NULL), gender(NULL), age(0) {}; virtual ~Dog(); Dog operator+(const Dog &dObj); private : char * name; char * gender; int age; }; class MyClass { public : MyClass() : action(NULL) {}; void setInstance(Animal &newInstance); void doSomething(); private : Animal * action; }; Dog::Dog(const char * name, const char * gender, int age) : // allocating here, for data passed in ctor name(new char[strlen(name)+1]), gender(new char[strlen(gender)+1]), age(age) { if (name) { size_t length = strlen(name) +1; strcpy_s(this->name, length, name); } else name = NULL; if (gender) { size_t length = strlen(gender) +1; strcpy_s(this->gender, length, gender); } else gender = NULL; if (age) { this->age = age; } } Dog::~Dog() { delete name; delete gender; age = 0; } Dog Dog::operator+(const Dog &dObj) { Dog d; d.age = age + dObj.age; return d; } void MyClass::setInstance(Animal &newInstance) { action = &newInstance; } void MyClass::doSomething() { action->walk(); action->eat(); } int main() { MyClass mObj; Dog dObj("Scruffy", "Male", 4); // passing data into ctor Dog dObj2("Scooby", "Male", 6); mObj.setInstance(dObj); // set the instance specific to the object. mObj.doSomething(); // something happens based on which object is passed in dObj = dObj + dObj2; // invoke the operator+ return 0; }

  Read the article

• Usability - How to edit favorites?

  - by Florian

  Hi, I'd like to get some opinions about about usability in the following case: Target group people from 30-50, low to middle internet affinity. App: I have a website with login. Visitors can save interesseting pages in their fav-box for fast access. Here the actual question: How to edit this favorites? Is it better to give the visitors direct access to drag/dropn and delete their favs or is it better to have an edit button so they have to activate the edit mode before? The fav-link would look like this | link text to click | icon-drag | icon-delete | thx for input TC

  Read the article

• h2 in-memory tables, remote connection

  - by Carolyn

  I am having problems with creating an in memory table, using H2 database, and accessing it outside of the JVM it is created and running in. The documentation structures the url as "jdbc:h2:tcp:///mem:' I've tried many combinations, but simply cannot get the remote connection to work. Is this feature working, can anyone give me the details of how they used this.

  Read the article

< Previous Page | 122 123 124 125 126 127 128 129 130 131 132 133  | Next Page >