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  • write() causes fatal crash when filedescriptor becomes invalid

    - by ckrames1234
    I'm writing an iPhone App with a webserver in it. To handle a web request, I take the web request and write() to it the data that I want to send back. When I try to download a moderately sized file (3-6MB) it works fine, but if I cancel the download halfway through, the app crashes and leaves no trace of an error. I'm thinking that the file descriptor becomes invalid halfway through the write, and causes the crash. I really don't know if this is what causes the crash, i'm just assuming. I'm basing my webserver off of this example. NSString *header = @""; NSData *data = [NSData dataWithContentsOfFile:fullPath]; write (fd, [header UTF8String], [header length]); write(fd, [data bytes], [data length]); close(fd); Does anyone know how to fix this? I was thinking about chunking the data and then writing each part, but I don't think it would help.

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  • To store images from UIGetScreenImage() in NSMutable Array

    - by sujyanarayan
    Hi, I'm getting images from UIGetScreenImage() and storing directly in mutable array like:- image = [UIImage imageWithScreenContents]; [array addObject:image]; [image release]; I've set this code in timer so I cant use UIImagePNGRepresentation() to store as NSData as it reduces the performance. I want to use this array directly after sometime i.e after capturing 1000 images in 100 seconds. When I use the code below:- UIImage *im = [[UIImage alloc] init]; im = [array objectAtIndex:i]; UIImageWriteToSavedPhotosAlbum(im, nil, nil, nil); the application crashes. And I dont want to use UIImagePNG or JPGRepresentation() in timer as it reduces performance. My problem is how to use this array so that it is converted into image. If anybody has idea related to it please share with me. Thanks in Advance.

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  • unable to find an entry point named 'interlockedexchange'

    - by Miki Amit
    Hi , I built an application in c# vs2005 .net . Everything works fine when i run the application in win 32 bit, But when running the application in win 64 it crashes while trying to call the pinvoke interlockedexchange(which is within the kernel32.dll) function . This is the exception : unable to find an entry point named 'interlockedexchange' I didnt find the interlockedexchange function within the kernel32.dll under system32 directory but it was found under the syswow64 directory(in the kernel32.dll) . I guess that the .net runtime is configured to the system32 directory and not to the syswow64 . How is it possible to change this configuration ? Can you think of any other problem that could cause this? any help would be appreciated! thanks , Miki Amit

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  • objective c id *

    - by joels
    I am using the KVO validations in my cocoa app. I have a method - (BOOL)validateName:(id *)ioValue error:(NSError **)outError My controls can now have their bindings validate. How do I invoke that method with a id * NOT id To use the value that is passed in (a pointer to a string pointer) I call this: NSString * newName = (NSString *)*ioValue; if ([newName length] < 4) { otherwise i get bad exec crashes... passing in with type casting doesnt work: (id *)myStringVar passing in with a regular id doesnt work either : (id) myStringVar

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  • Interface builder problem: When hooking up an IBOutlet, getting "this class is not key value coding-

    - by Robert
    Here is what I do: 1) Create New UIViewController subclass , tick with NIB for interface builder 2) In the header: @interface QuizMainViewController : UIViewController { UILabel* aLabel; } @property (nonatomic, retain) IBOutlet UILabel* aLabel; @end 3) In the .m #import "QuizMainViewController.h" @implementation QuizMainViewController @synthesize aLabel; - (void)dealloc { [aLabel release]; [super dealloc]; } @end 4) Open the NIB In interface builder, drag a new UILabel into the view. I test the program here and it runs fine. 5) right click on file's owner, connect 'aLabel' from the Outlets to the UILabel. I run here and it crashes. Message from log: * Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key aLabel.'

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  • Why would Silverlight be crashing in Release but not in Debug mode?

    - by Edward Tanguay
    I have a Silverlight App that has worked well in Debug and Release modes for weeks. It still works well in Debug mode. However, now when I run it in Release mode, it starts, shows me the screen, loads the data, then hangs, and the browser (Firefox) closes automatically. I've tried other browsers and each of them crashes, Chrome says "The Silverlight Plug-In has crashed" for instance. Here are the last lines of Output that I get: 'firefox.exe' (Silverlight): Loaded 'System.Windows.Controls' 'firefox.exe' (Silverlight): Loaded 'System.Windows.Controls.Toolkit' 'firefox.exe' (Silverlight): Loaded 'C:\Program Files\Microsoft Silverlight\4.0.50524.0\en-US\mscorlib.debug.resources.dll' 'firefox.exe' (Silverlight): Loaded 'C:\Program Files\Microsoft Silverlight\4.0.50524.0\en-US\System.Windows.debug.resources.dll' The program '[1120] firefox.exe: Silverlight' has exited with code -2147023895 (0x800703e9). How can I get more information about what is happening at the point of crash in Release mode that is not happening in Debug mode?

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  • Rails - how can I query the db w/o touching the sessions table

    - by sa125
    Hi - I'm trying to provide a HTTP api to my app that queries a db that's read-only (for replication purposes). I find that my app crashes repeatedly when making a request b/c the call is trying to update the sessions table whenever I query the db. This doesn't happen when I return some text without hitting the database for info. class APIController < AplicationController def view data = Product.find(params[:id]).to_json # will fail data = { :one => 1, :two => 2 }.to_json # will succeed respond_to do |format| format.html { render :json => data } end end end How do I restrict it from touching the sessions table on this request (it's currently issuing an UPDATE on the updated_at field for that session). thanks.

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  • Can't connect twice to linked table using ACE/JET driver

    - by Tmdean
    I'm trying to connect to an MS Access database linked table in VBScript. It works fine connecting the first time on one connection but if I close that connection and open a new one in the same script it gives me an error. test.vbs(13, 1) Microsoft Office Access Database Engine: ODBC--connection to '{Oracle in OraClient10g_home1}DB_NAME' failed. This is some code that triggers the error. TABLE_1 is an ODBC linked table in the test.mdb file. Dim cnn, rs Set cnn = CreateObject("ADODB.Connection") cnn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data source=test.mdb" Set rs = cnn.Execute("SELECT * FROM [TABLE_1]") rs.Close cnn.Close Set cnn = CreateObject("ADODB.Connection") cnn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data source=test.mdb" Set rs = cnn.Execute("SELECT * FROM [TABLE_1]") '' crashes here rs.Close cnn.Close This error does not occur if I try to access an ordinary Access table. Right now I'm thinking it's a bug in the Oracle ODBC driver.

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  • Core Data (NSFetchedResultsController) displaying one row per section

    - by Urizen
    I have a CoreData application which uses NSFetchedResultsController. NSFetchedResultsController is useful in that it allows me to access the fetched objects more easily etc. but I find that I have problems with the following: I get a crash when I display a single row for each section (irrespective of the number of actual rows present) as a summary of the information in that section (e.g. showing a statistical analysis of the data contained in the fetched rows for that section). I understand that the NSFetchedResultsControllerDelegatemethods have to agree with the number of rows reported per section by the UITableView Delegate method but I would like to be able to fetch all of the records for each section without necessarily displaying each of the rows. The above causes me inconsistency crashes, when I try to insert or delete data for a section, which reports that the number of rows for each section is not as it should be given the number of insertions/deletions. Is there any way I can do what I'm trying to achieve? Thanks for any help.

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  • My JVM crahes when i run my program.

    - by rgksugan
    I have written a program to process packets. The program runs well if its run alone but when i integrate it to my main project the jvm crashes and shows the below result. What is the problem? # # An unexpected error has been detected by HotSpot Virtual Machine: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d7dcf6e, pid=4328, tid=4068 # # Java VM: Java HotSpot(TM) Client VM (1.5.0_16-b02 mixed mode, sharing) # Problematic frame: # V [jvm.dll+0x9cf6e] # # An error report file with more information is saved as hs_err_pid4328.log # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp #

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  • Too many open files error in Glassfish3 while using https listener

    - by a1ex07
    I have a problem running webservice that requires https connection(Glassfish3). After running for a while, it eventually crashes. Log file show "Failed to load keystore type JKS with path ....config/keystore.jks due to ...config/keystore.jks (Too many open files)". lsof shows that a number of open files are constantly increasing (among others, I noticed that there are many files with type 'sock' and undefined protocol that never get closed). I tried changing the limit of open files, but it resulted in a longer time before crashing... I blamed the webservice, but everything works fine if the application doesn't require confidential protocol. Did I miss anything in http listener configuration ? Or it is rather an application error? Thanks in advance

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  • Java: separating JAR versions

    - by Chris
    I'm developing a Java plugin for an existing Java program. The existing program uses a specific version of eclipse.uml2.* and my plugin does too. Unfortunately I need a newer version for my plugin. In order to run the plugin, I need to export it into a Jar file (with all jars packed). Then the program executes it. But somehow the new eclipse.uml2.* seem to interfere with the program - it crashes. Is there a way to "separate" both versions of the jar files?

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  • Why does this code fail in D2010, but not D7?

    - by Tom1952
    Why does this code get an access error on the Result := Buffer line in D2010, but not D7? Something, I'd guess, involving UniCode, but the compiler doesn't generate any warnings. Any suggestions on an elegant workaround? function GetTempPathAndFileName( const aExtension: string): string; var Buffer: array[0..MAX_PATH] of Char; begin repeat GetTempPath(SizeOf(Buffer) - 1, Buffer); GetTempFileName(Buffer, '~', 0, Buffer); Result := Buffer; // <--- crashes on this line, Result := ChangeFileExt(Result, aExtension); until not FileExists(Result); end; { GetTempPathAndFileName }

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  • Core Data fetchedresultscontroller question : what is "sections" for?

    - by Jake
    Hi, I'm trying to get to know Core Data (I'm a noob at iPhone development) and in order to do this I'm trying to get an object from the fetchedresultscontroller and NSlog it's name (a property of the object). I tried to do it like this: NSArray *ar = [NSArray arrayWithArray:[fetchedResultsController sections]]; Task *t = [ar objectAtIndex:0]; NSLog(@"%@", t.taskName); However, the app crashed with this error: the app crashes with the error Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[_NSDefaultSectionInfo taskName]: unrecognized selector sent to instance 0x3d1f670' I have since learned that you need to use the fetched objects property for this, but then what is sections for? Thanks for any help, sorry if this is a supremely stupid question. I've looked over the documentation but still don't understand.

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  • iPhone image app not releasing memory as in instruments using imageNamed

    - by Tankista
    hi, im building iPhone app that downloads images (UIImageView) from internet and adding them to UIScrollView. This scroll view could contain 20 or more UIImageViews. Iam adding UIImages to UIImageView like this: UIImageView *newView = [[UIImageView alloc] initWithImage: image]; Then I just scroll these images like in photo app. Problem is, when I put just 3 UIImageViews in UIScrollView everything works fine, but when I put more images, more memory is used, so that app can crash after 15 or more images. I can understand it that more images alloc more memory, but in Instruments i get allocated max 2-3 MB, but in device memory raises until it crashes. When I use simulator for OS 3.0 i can see memory rising like on device. On higher versions I dont see this memory raise, why is that?

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  • Whats wrong with my backgroundwork method

    - by diver-d
    I am trying to get a background worker process working in a wpf application. it creates 2 files then crashes. BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += delegate(object s, DoWorkEventArgs args) { CreateFile(i.ToString()); }; worker.RunWorkerAsync(); private void CreateFile(string fileName) { string path = string.Format(@"{0}\{1}.txt", directory, fileName); using (StreamWriter sw = new StreamWriter(path)) { sw.WriteLine(fileName); } } I get this error " The requested operation cannot be performed on a file with a user-mapped section open." what am I doing wrong? Any help would be great

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  • Increase file upload size limit in iis6

    - by JustFoo
    Is there any other place besides the metabase.xml file where the file upload size can be modified? I am currently running a staging server with IIS6 and it is setup to allow uploading of files up to 20mb. This works perfectly fine. I have a new production server where I am trying to setup this same available size limit. So I edited the metabase.xml file and set it to 20971520. Then I restarted IIS and that didn't work. So I then restarted the entire server, that also didn't work. I can upload files around 2mb so it is definitely allowing file sizes larger then the standard 200kb default size. I try uploading a 5mb file and my upload.aspx page completely crashes. Is it possible there is something else I need to configure? The production server is located on a server farm, could there be some limits set on there end? Thanks

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  • iphone app crashing when url connection connection timed out is coming

    - by satyam
    I'm creating iphone app. In that, when the app starts, it connects to server and downloads few images and then proceeds with app. When app is downloading, it will show the initial splash screen. as long as my server is able to ping my iphone, its working well. but the trouble starts when my server is taking much time to respond for the NSURL request. The app is crashing with following error: Mon May 14 13:56:34 unknown Springboard[24] <Warning>: com.xxxx.xxx failed to launch in time I understood that when such issues happen with application, iphone crashes the appliation. I would like to know how much max time iphone allows app to respond to such instances. Is there any max value for that?

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  • Are there clean ways to do these Quartz Triggers?

    - by Ryan Elkins
    I'm using Quartz to schedule some jobs but I have a few scenarios that I'm not sure how to resolve. 1) Lets say I have a job that is scheduled to run every 5 minutes. Generally that works well but periodically the job takes more than 5 minutes and I don't really want multiple instances of the job running simultaneously. 2) I have a job that can take between 1 and 60 minutes to complete. I want it to run continuously but pause for 10 minutes between runs, regardless of how long it took previously. I like using Quartz for this rather than some sort of loop because if a job crashes Quartz will still spin up a new one based on the schedule. I am using Quartz in Java right now.

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  • Static Class Variables in Dynamic Library and Main Program

    - by Paul
    I am working on a project that has a class 'A' that contains a static stl container class. This class is included in both my main program and a .so file. The class uses the default(implicit, not declared) constructor/destructor. The main program loads the .so file using dlopen() and in its destructor, calls dlclose(). The program crashes after main exits when glibc calls the destructor for the static class member variable. The problem appears to be that when dlclose() is called, the destructor for the static variable is called, then when main exits() glibc also calls the destructor, resulting in a double free. I have 2 questions, namely: 1) In this particular case, why are there not two copies of the static variable(yes i know that sounds somewhat ridiculous, but since both the main program and .so file have a separately compiled 'A', shouldn't they each have one?) 2) Is there any way to resolve this issue without re-writing class 'A' to not contain static member variables?

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  • core data editor problems

    - by Peyman
    I was recommended by someone in Stack Overflow to use Core Data Editor http://christian-kienle.de/CoreDataEditor/ to manage the sqlite persistent store. However the latest version (3.0) crashes on launch everytime. Older versions load but I see nothing when i point the config to the persistent store and the object model directories. There is no documentation either. can someone point me to the right place to sort this problem? I am trying to find a more manageable way to coordinate core data development than sqlite consoles. thank you

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  • NSKeyedArchiver save method ( that i made) crashed the iphone simulator

    - by Kevin
    i saw this approach on a tutorial, and the message is working for their example but when i implement this it does not work. from what i can tell the iphone simulator crashes when i do a [ self saveSettingsData]. TheSettings is class object that i declare and initialize in the appdelagate with these methods. the error says terminating due to uncaught exception. i am new to the iphone sdk and objective, so i really can't figure out what is going on thanks to any one who can help, i am ready to literally pull my hair out. (NSString *) SettingsDataFilePath { NSString * settingsDataFilePath ; NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) ; NSString * documentsDirectory = [paths objectAtIndex:0] ; settingsDataFilePath = [[documentsDirectory stringByAppendingPathComponent: @"SetggggtingsData.plist" ] retain] ; return settingsDataFilePath ; } (void) saveSettingsData { [NSKeyedArchiver archiveRootObject:[TheSettings copy] toFile:[self SettingsDataFilePath]] ;

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  • WPF exception handling when launched from WinForms

    - by Sonic Soul
    so i came across this interesting article on WPF exception handling: http://srtsolutions.com/public/item/251263 it works by declaring DispatcherUnhandledException handler in xaml <application> node. but what if a WPF window is launched from win forms application? where can i declare a general exception handler? The problem is that when WPF crashes, it brings down the whole WinForms app with it. *Edit what if instead of launching the WPF window directly, i launched an "Application" which than defined a start window?? is that possible/advisable?

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  • Confusion using XCode 4.5 for iOS 5.0 and iOS 6.0

    - by AppleDeveloper
    I am very much confused between iOS 5.0 and iOS 6.0 with XCode 4.5. It's not very clear if I want to support my new App on iOS 5.0 onwards, which functionality should I use and which are not to use. Basically Xcode 4.5 gives you all functionality like Container Views and Unwind Segues in storyboard (...and many more that I might not be aware) that are available only from iOS 6.0 and you wouldn't know until you run your app and it crashes! Could anyone please let me know any simple solution to this? Do I have to revert back to Xcode 4.4? I am setting deployment target to iOS 5.0 but I couldn't set Base SDK to iOS 5.0 as it doesn't appear in the list. See attached image. Thanks.

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  • UIViewControllers - TabBarApplication - iPhone SDK

    - by Kevin
    Hello everyone, I am very new to the iPhone SDK. I need to know if in a tab bar application I need to make UIViewController classes. For example, when I make a new tab bar application there is a default FirstViewController class (.h, .m) already there. Now if I have code on the second tab, would I need to create a SecondViewController class? If not, how would I make a button on the 2nd tab, and make that button do something. I'm not really sure how to do it, because the FirstViewController works with the buttons and code, but if I make a SecondViewController, and I link everything my app crashes. If anyone could help it would be greatly appreciated. Kevin

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