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CFReadStreamOpen() crashes on the main thread
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CFReadStreamOpen() crashes on the main thread


  • Subject: CFReadStreamOpen() crashes on the main thread
  • From: Ștefan Bălu <email@hidden>
  • Date: Mon, 26 Jan 2015 16:06:11 +0200

Hi everybody,

I am having an issue when trying to perform synchronous HTTP requests. My main() does the following:

* perform a HTTP GET request to an URL (right from the main())
* register a timer source on CFRunLoopGetMain() which calls a callback that performs a second HTTP GET
* perform a HTTP GET request to an URL (right from the main())

Now, my problem is that the first (1st) and third (3rd) requests are performed ok, while the one from the timer source callback crashes in CFReadStreamOpen().

The function i use for performing HTTP requests is:

CFHTTPMessageRef PerformHTTPRequestWithMethodAndHeaders(CFURLRef url, CFStringRef method, CFDictionaryRef headers, CFErrorRef *error)

{

    if (!url)

        return NULL;

    

    if (!method)

        method = CFSTR("GET");

    

    if (headers)

        CFRetain(headers);


    CFRetain(url);

    CFRetain(method);


    CFStringRef _urlStr = CFURLGetString(url);

    CFRetain(_urlStr);

    char *_url = CFStringCopyUTF8String(_urlStr);

    char *_method = CFStringCopyUTF8String(method);

    CFRelease(_urlStr);

    

    asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] %s (%s)", _url, _method);

    free(_url);

    free(_method);

    

    CFHTTPMessageRef message = CFHTTPMessageCreateRequest(kCFAllocatorDefault, method, url, kCFHTTPVersion1_1);

    CFRelease(method);

    CFRelease(url);

    

    if (message == NULL) {

        CFRelease(headers);

        return NULL;

    }


    CFDataRef body = CFDataCreateMutable(kCFAllocatorDefault, 0);

    CFHTTPMessageSetBody(message, body);

    

    if (headers != NULL) {

        CFDictionaryApplyFunction(headers, __HTTPSetRequestHeaders, (void *)message);

        CFRelease(headers);

    } else {

        CFHTTPMessageSetHeaderFieldValue(message, CFSTR("Accept"), CFSTR("text/plain"));

        CFHTTPMessageSetHeaderFieldValue(message, CFSTR("Content-type"), CFSTR("text/plain"));

    }

    

    CFReadStreamRef readStream = CFReadStreamCreateForHTTPRequest(kCFAllocatorDefault, message);

    CFRelease(message);

    message = NULL;

    if (readStream == NULL)

        return NULL;


    CFStreamStatus status = CFReadStreamGetStatus(readStream);

    asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] CFReadStreamGetStatus() returned: %ld", status);

    

    if (status != kCFStreamStatusOpen) {

        CFErrorRef error = CFReadStreamCopyError(readStream);

        if (error) {

            CFStringRef msg = CFErrorCopyDescription(error);

        

            char *_msg = CFStringCopyUTF8String(msg);

        

            CFRelease(msg);

            CFRelease(error);

        

            asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] CFReadStreamCreateForHTTPRequest() has failed: %s", _msg);

            free(_msg);

        }

    }


    if (!CFReadStreamSetProperty(readStream, kCFStreamPropertyHTTPShouldAutoredirect, kCFBooleanTrue))

        asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] CFReadStreamSetProperty() has failed");

    

    CFMutableDictionaryRef secDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

    CFDictionarySetValue(secDict, kCFStreamSSLValidatesCertificateChain, kCFBooleanFalse);

    if (!CFReadStreamSetProperty(readStream, kCFStreamPropertySSLSettings, secDict))

        asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] CFReadStreamSetProperty() has failed");

    

    CFRelease(secDict);

    

    if (!CFReadStreamOpen(readStream))

        asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] CFReadStreamOpen() has failed");

    

    CFMutableDataRef data = "">CFDataCreateMutable(kCFAllocatorDefault, 0);


    CFIndex numBytesRead = 0;

    do {

        const int nBuffSize = 1024;

        UInt8 buff[nBuffSize];

        numBytesRead = CFReadStreamRead(readStream, buff, nBuffSize);

        if (numBytesRead > 0) {

            CFDataAppendBytes(data, buff, numBytesRead);

        } else if (numBytesRead < 0) {

            asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] CFReadStreamRead() failed: %ld", numBytesRead);

            if (error)

                *error = CFReadStreamCopyError(readStream);

            break;

        }

    } while (numBytesRead > 0);

    

    CFHTTPMessageRef response = (CFHTTPMessageRef)CFReadStreamCopyProperty(readStream, kCFStreamPropertyHTTPResponseHeader);

    if (!response) {

        asl_log(NULL, NULL, ASL_LEVEL_WARNING, "[PerformHTTPRequestWithMethodAndHeaders] CFReadStreamCopyProperty() has failed");

        

        CFReadStreamClose(readStream);

        CFRelease(readStream);

        readStream = NULL;

        

        CFRelease(data);

        return NULL;

    }


    CFHTTPMessageSetBody(response, data);

    CFRelease(data);

    data = "" class="">NULL;


    CFReadStreamClose(readStream);

    CFRelease(readStream);

    readStream = NULL;

    

    return response;

}

Below, is the crash i usually get when the main RunLoop executes the UpdateCallback:

Process:         MyApplication [18931]
Path:            /Users/USER/Library/Application Support/Bla/MyApplication
Identifier:      MyApplication
Version:         1.0 (1.0.6)
Code Type:       X86-64 (Native)
Parent Process:  launchd [140]
User ID:         501

Date/Time:       2015-01-26 15:56:07.920 +0200
OS Version:      Mac OS X 10.8.5 (12F45)
Report Version:  10

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT

Application Specific Information:
objc_msgSend() selector name: length


Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libobjc.A.dylib               0x00007fff8787339f objc_msgSend_fixup + 95
1   com.apple.CoreFoundation       0x00007fff8aa86d75 CFURLCreateStringByAddingPercentEscapes + 69
2   com.apple.CFNetwork           0x00007fff92a8f581 appendEscapedFormat(__CFString*, __CFString const*, __CFString const*) + 49
3   com.apple.CFNetwork           0x00007fff92a8f328 initializeUserAgentString() + 290
4   libsystem_c.dylib             0x00007fff87275fc0 pthread_once + 87
5   com.apple.CFNetwork           0x00007fff92a8eea9 cleanUpRequest + 131
6   com.apple.CFNetwork           0x00007fff92a8eba3 HTTPNetConnection::prepareTransmission(HTTPNetStreamInfo*, __CoreWriteStream*) + 785
7   com.apple.CFNetwork           0x00007fff92a8df30 NetConnection::enqueue(void*, unsigned char) + 404
8   com.apple.CFNetwork           0x00007fff92a8dd51 HTTPNetStreamInfo::_streamImpl_Open(CFStreamError*, unsigned char*) + 69
9   com.apple.CFNetwork           0x00007fff92a8dd07 non-virtual thunk to HTTPNetStreamInfo::_streamImpl_Open(CFStreamError*, unsigned char*) + 13
10  com.apple.CFNetwork           0x00007fff92a683f2 CoreStreamBase::_streamInterface_Open() + 84
11  com.apple.CFNetwork           0x00007fff92aa28d8 HTTPReadStream::startRequest(CFStreamError*) + 726
12  com.apple.CFNetwork           0x00007fff92aa21f2 HTTPReadStream::_streamImpl_Open(CFStreamError*, unsigned char*) + 614
13  com.apple.CFNetwork           0x00007fff92aa1f84 non-virtual thunk to HTTPReadStream::_streamImpl_Open(CFStreamError*, unsigned char*) + 13
14  com.apple.CFNetwork           0x00007fff92a683f2 CoreStreamBase::_streamInterface_Open() + 84
15  com.apple.CFNetwork           0x00007fff92a68356 CoreStreamCFStreamSupport<__CFReadStream*, CoreReadStream>::_stream_open(__CFReadStream*, CFStreamError*, unsigned char*, void*) + 56
16  com.apple.CoreFoundation       0x00007fff8aa363d9 _CFStreamOpen + 137
17  com.apple.CoreFoundation       0x00007fff8aa57ec6 CFReadStreamOpen + 86
18  MyApplication               0x000000010000b918 PerformHTTPRequestWithMethodAndHeaders + 734
19  MyApplication               0x000000010000bbad CopyAvailableUpdate + 79
20  MyApplication               0x0000000100010805 UpdateCallback + 11
21  com.apple.CoreFoundation       0x00007fff8aa54804 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
22  com.apple.CoreFoundation       0x00007fff8aa5431d __CFRunLoopDoTimer + 557
23  com.apple.CoreFoundation       0x00007fff8aa39ad9 __CFRunLoopRun + 1529
24  com.apple.CoreFoundation       0x00007fff8aa390e2 CFRunLoopRunSpecific + 290
25  com.apple.CoreFoundation       0x00007fff8aa47dd1 CFRunLoopRun + 97
26  MyApplication               0x00000001000113ff main + 2814
27  MyApplication               0x0000000100001574 start + 52

Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0   libsystem_kernel.dylib         0x00007fff8d34cd16 kevent + 10
1   libdispatch.dylib             0x00007fff8ca34dea _dispatch_mgr_invoke + 883
2   libdispatch.dylib             0x00007fff8ca349ee _dispatch_mgr_thread + 54

Thread 2:: Dispatch queue: com.apple.networking.connection.0x100141320
0   libsystem_kernel.dylib         0x00007fff8d34a6c2 semaphore_wait_trap + 10
1   libdispatch.dylib             0x00007fff8ca36c32 _dispatch_thread_semaphore_wait + 16
2   libdispatch.dylib             0x00007fff8ca36a92 _dispatch_barrier_sync_f_slow + 188
3   libsystem_network.dylib       0x00007fff8a6ef098 net_helper_send + 164
4   libsystem_network.dylib       0x00007fff8a6ef51b net_helper_preflight + 152
5   libsystem_network.dylib       0x00007fff8a6ea4d8 __tcp_connection_start_block_invoke_0 + 152
6   libdispatch.dylib             0x00007fff8ca35f01 _dispatch_call_block_and_release + 15
7   libdispatch.dylib             0x00007fff8ca320b6 _dispatch_client_callout + 8
8   libdispatch.dylib             0x00007fff8ca3347f _dispatch_queue_drain + 235
9   libdispatch.dylib             0x00007fff8ca332f1 _dispatch_queue_invoke + 52
10  libdispatch.dylib             0x00007fff8ca331c3 _dispatch_worker_thread2 + 249
11  libsystem_c.dylib             0x00007fff87276cdb _pthread_wqthread + 404
12  libsystem_c.dylib             0x00007fff87261191 start_wqthread + 13

Thread 3:
0   libsystem_c.dylib             0x00007fff87261184 start_wqthread + 0

Thread 4:
0   libsystem_kernel.dylib         0x00007fff8d34c6d6 __workq_kernreturn + 10
1   libsystem_c.dylib             0x00007fff87276f1c _pthread_workq_return + 25
2   libsystem_c.dylib             0x00007fff87276ce3 _pthread_wqthread + 412
3   libsystem_c.dylib             0x00007fff87261191 start_wqthread + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x00007fff87873340  rbx: 0x0000000100100f10  rcx: 0x00007fff76d88e20  rdx: 0x0000000000000007
  rdi: 0x0000000100100f10  rsi: 0x00007fff76d885d0  rbp: 0x00007fff5fbfe0e0  rsp: 0x00007fff5fbfe020
   r8: 0x0000000008000100   r9: 0x00007fff8fc9727f  r10: 0x00007fff8ab8a31f  r11: 0x7250686372616553
  r12: 0x000000010011a640  r13: 0x000000010013f630  r14: 0x0000000000000000  r15: 0x0000000000000000
  rip: 0x00007fff8787339f  rfl: 0x0000000000010246  cr2: 0x00007fff76cd8168
Logical CPU: 0

Binary Images:
       0x100000000 -        0x10006ffff +MyApplication (1.0 - 1.0.6) <F4464D9A-1FBD-3996-B860-4BE5788C1BF2> /Users/USER/Library/Application Support/Bla/MyApplication
    0x7fff6d186000 -     0x7fff6d1ba93f  dyld (210.2.3) <A40597AA-5529-3337-8C09-D8A014EB1578> /usr/lib/dyld
    0x7fff8679e000 -     0x7fff867a4ff7  libunwind.dylib (35.1) <21703D36-2DAB-3D8B-8442-EAAB23C060D3> /usr/lib/system/libunwind.dylib
    0x7fff867a5000 -     0x7fff8684bff7  com.apple.CoreServices.OSServices (557.6 - 557.6) <E91B0882-E75C-30E9-8DCD-7A0EEE4405CC> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServices.framework/Versions/A/OSServices
    0x7fff8684c000 -     0x7fff86876ff7  com.apple.CoreVideo (1.8 - 99.4) <E5082966-6D81-3973-A05A-38AA5B85F886> /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo
    0x7fff86877000 -     0x7fff87207a07  com.apple.CoreGraphics (1.600.0 - 340) <4E39B001-BD9B-3A60-A495-C7F908F52C44> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
    0x7fff87260000 -     0x7fff8732cff7  libsystem_c.dylib (825.40.1) <543B05AE-CFA5-3EFE-8E58-77225411BA6B> /usr/lib/system/libsystem_c.dylib
    0x7fff8732d000 -     0x7fff87562ff7  com.apple.CoreData (106.1 - 407.7) <A676E1A4-2144-376B-92B8-B450DD1D78E5> /System/Library/Frameworks/CoreData.framework/Versions/A/CoreData
    0x7fff87563000 -     0x7fff875e4fff  com.apple.Metadata (10.7.0 - 707.12) <69E3EEF7-8B7B-3652-8320-B8E885370E56> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadata.framework/Versions/A/Metadata
    0x7fff8786d000 -     0x7fff8798592f  libobjc.A.dylib (532.2) <90D31928-F48D-3E37-874F-220A51FD9E37> /usr/lib/libobjc.A.dylib
    0x7fff87986000 -     0x7fff879e0fff  com.apple.print.framework.PrintCore (8.3 - 387.2) <5BA0CBED-4D80-386A-9646-F835C9805B71> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/PrintCore.framework/Versions/A/PrintCore
    0x7fff879e1000 -     0x7fff879e3ff7  libunc.dylib (25) <92805328-CD36-34FF-9436-571AB0485072> /usr/lib/system/libunc.dylib
    0x7fff87b98000 -     0x7fff87d46fff  com.apple.QuartzCore (1.8 - 304.4) <84F0B40E-DF91-36F2-9F2E-3922234206A3> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
    0x7fff87d92000 -     0x7fff87da0ff7  libkxld.dylib (2050.48.12) <B8F7ED1F-CF84-3777-9183-0A1C513DF81F> /usr/lib/system/libkxld.dylib
    0x7fff87da3000 -     0x7fff87de6ff7  com.apple.RemoteViewServices (2.0 - 80.6) <5CFA361D-4853-3ACC-9EFC-A2AC1F43BA4B> /System/Library/PrivateFrameworks/RemoteViewServices.framework/Versions/A/RemoteViewServices
    0x7fff87e7b000 -     0x7fff87ea9ff7  libsystem_m.dylib (3022.6) <B434BE5C-25AB-3EBD-BAA7-5304B34E3441> /usr/lib/system/libsystem_m.dylib
    0x7fff882e7000 -     0x7fff882fefff  libGL.dylib (8.10.1) <F8BABA3C-7810-3A65-83FC-61945AA50E90> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
    0x7fff888c2000 -     0x7fff889c1fff  libcrypto.0.9.8.dylib (52.1) <796E5F5E-36BF-3B1B-A519-C9A1682199C4> /usr/lib/libcrypto.0.9.8.dylib
    0x7fff889c2000 -     0x7fff88a7fff7  com.apple.ColorSync (4.8.0 - 4.8.0) <6CE333AE-EDDB-3768-9598-9DB38041DC55> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ColorSync.framework/Versions/A/ColorSync
    0x7fff88b2d000 -     0x7fff88bcbff7  com.apple.ink.framework (10.8.2 - 150) <3D8D16A2-7E01-3EA1-B637-83A36D353308> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Ink.framework/Versions/A/Ink
    0x7fff88bcc000 -     0x7fff88c1bff7  libcorecrypto.dylib (106.2) <CE0C29A3-C420-339B-ADAA-52F4683233CC> /usr/lib/system/libcorecrypto.dylib
    0x7fff88c1c000 -     0x7fff88c44fff  libJPEG.dylib (852) <4E159C31-1B41-3EFF-89EC-3F7BC9053F2C> /System/Library/Frameworks/ImageIO.framework/Versions/A/Resources/libJPEG.dylib
    0x7fff88c46000 -     0x7fff88fa5fff  com.apple.Foundation (6.8 - 945.19) <C98E55BA-553B-314B-B056-849FFB20C220> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
    0x7fff88fe1000 -     0x7fff8905fff7  com.apple.securityfoundation (6.0 - 55115.4) <C5461971-E455-31A6-99B8-AF80C4BC26DD> /System/Library/Frameworks/SecurityFoundation.framework/Versions/A/SecurityFoundation
    0x7fff89090000 -     0x7fff890afff7  com.apple.ChunkingLibrary (2.0 - 133.3) <8BEC9AFB-DCAA-37E8-A5AB-24422B234ECF> /System/Library/PrivateFrameworks/ChunkingLibrary.framework/Versions/A/ChunkingLibrary
    0x7fff890b0000 -     0x7fff890b1fff  libsystem_blocks.dylib (59) <D92DCBC3-541C-37BD-AADE-ACC75A0C59C8> /usr/lib/system/libsystem_blocks.dylib
    0x7fff890b2000 -     0x7fff890feff7  libauto.dylib (185.4) <AD5A4CE7-CB53-313C-9FAE-673303CC2D35> /usr/lib/libauto.dylib
    0x7fff891dd000 -     0x7fff892e9fff  libFontParser.dylib (84.7) <C3D1121B-B066-34C3-9D31-ADDF387C0B20> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Resources/libFontParser.dylib
    0x7fff8937a000 -     0x7fff89414fff  libvMisc.dylib (380.10) <A7F12764-A94C-36EB-88E0-F826F5AF55B4> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib
    0x7fff89986000 -     0x7fff899e0ff7  com.apple.opencl (2.2.19 - 2.2.19) <3C7DFB2C-B3F9-3447-A1FC-EAAA42181A6E> /System/Library/Frameworks/OpenCL.framework/Versions/A/OpenCL
    0x7fff89c8b000 -     0x7fff89cb2ff7  com.apple.PerformanceAnalysis (1.16 - 16) <E4888388-F41B-313E-9CBB-5807D077BDA9> /System/Library/PrivateFrameworks/PerformanceAnalysis.framework/Versions/A/PerformanceAnalysis
    0x7fff89cbd000 -     0x7fff89cbffff  com.apple.TrustEvaluationAgent (2.0 - 23) <A97D348B-32BF-3E52-8DF2-59BFAD21E1A3> /System/Library/PrivateFrameworks/TrustEvaluationAgent.framework/Versions/A/TrustEvaluationAgent
    0x7fff89dc0000 -     0x7fff89ebdff7  libxml2.2.dylib (22.3) <47B09CB2-C636-3024-8B55-6040F7829B4C> /usr/lib/libxml2.2.dylib
    0x7fff89ebe000 -     0x7fff89ec3fff  com.apple.OpenDirectory (10.8 - 151.10) <CF44120B-9B01-32DD-852E-C9C0E1243FC0> /System/Library/Frameworks/OpenDirectory.framework/Versions/A/OpenDirectory
    0x7fff89ec4000 -     0x7fff89ecafff  libmacho.dylib (829) <BF332AD9-E89F-387E-92A4-6E1AB74BD4D9> /usr/lib/system/libmacho.dylib
    0x7fff89f73000 -     0x7fff8a075fff  libJP2.dylib (852) <01E502E9-7FD3-3A5D-8EA4-2DC8C56E0497> /System/Library/Frameworks/ImageIO.framework/Versions/A/Resources/libJP2.dylib
    0x7fff8a08c000 -     0x7fff8a0c2fff  com.apple.DebugSymbols (98 - 98) <14E788B1-4EB2-3FD7-934B-849534DFC198> /System/Library/PrivateFrameworks/DebugSymbols.framework/Versions/A/DebugSymbols
    0x7fff8a0c3000 -     0x7fff8a0d0fff  com.apple.AppleFSCompression (49 - 1.0) <5508344A-2A7E-3122-9562-6F363910A80E> /System/Library/PrivateFrameworks/AppleFSCompression.framework/Versions/A/AppleFSCompression
    0x7fff8a0da000 -     0x7fff8a114ff7  com.apple.GSS (3.0 - 2.0) <423BDFCC-9187-3F3E-ABB0-D280003EB15E> /System/Library/Frameworks/GSS.framework/Versions/A/GSS
    0x7fff8a19f000 -     0x7fff8a1b2ff7  com.apple.LangAnalysis (1.7.0 - 1.7.0) <2F2694E9-A7BC-33C7-B4CF-8EC907DF0FEB> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/LangAnalysis.framework/Versions/A/LangAnalysis
    0x7fff8a1b3000 -     0x7fff8a1b5fff  libquarantine.dylib (52.1) <143B726E-DF47-37A8-90AA-F059CFD1A2E4> /usr/lib/system/libquarantine.dylib
    0x7fff8a1b6000 -     0x7fff8a1b7ff7  libremovefile.dylib (23.2) <6763BC8E-18B8-3AD9-8FFA-B43713A7264F> /usr/lib/system/libremovefile.dylib
    0x7fff8a1b8000 -     0x7fff8a1daff7  libxpc.dylib (140.43) <70BC645B-6952-3264-930C-C835010CCEF9> /usr/lib/system/libxpc.dylib
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    0x7fff916b0000 -     0x7fff916b7ff7  libcopyfile.dylib (89.0.70) <30824A67-6743-3D99-8DC3-92578FA9D7CB> /usr/lib/system/libcopyfile.dylib
    0x7fff916b8000 -     0x7fff916c5fff  libbz2.1.0.dylib (29) <CE9785E8-B535-3504-B392-82F0064D9AF2> /usr/lib/libbz2.1.0.dylib
    0x7fff916cc000 -     0x7fff916dbfff  com.apple.opengl (1.8.10 - 1.8.10) <AD49CF56-B7C1-3598-8610-58532FC41345> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
    0x7fff916dc000 -     0x7fff91703fff  com.apple.framework.familycontrols (4.1 - 410) <50F5A52C-8FB6-300A-977D-5CFDE4D5796B> /System/Library/PrivateFrameworks/FamilyControls.framework/Versions/A/FamilyControls
    0x7fff917c4000 -     0x7fff917c9fff  libcompiler_rt.dylib (30) <08F8731D-5961-39F1-AD00-4590321D24A9> /usr/lib/system/libcompiler_rt.dylib
    0x7fff917f2000 -     0x7fff917fafff  liblaunch.dylib (442.26.2) <2F71CAF8-6524-329E-AC56-C506658B4C0C> /usr/lib/system/liblaunch.dylib
    0x7fff917fb000 -     0x7fff917fffff  libCoreVMClient.dylib (32.5) <DB009CD4-BB0E-3331-BBB4-A118781D193F> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libCoreVMClient.dylib
    0x7fff91835000 -     0x7fff9185aff7  libc++abi.dylib (26) <D86169F3-9F31-377A-9AF3-DB17142052E4> /usr/lib/libc++abi.dylib
    0x7fff9185b000 -     0x7fff9185cfff  libDiagnosticMessagesClient.dylib (8) <8548E0DC-0D2F-30B6-B045-FE8A038E76D8> /usr/lib/libDiagnosticMessagesClient.dylib
    0x7fff9198a000 -     0x7fff91cbafff  com.apple.HIToolbox (2.0 - 626.1) <656D08C2-9068-3532-ABDD-32EC5057CCB2> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox
    0x7fff91cbb000 -     0x7fff91cc6ff7  com.apple.bsd.ServiceManagement (2.0 - 2.0) <C12962D5-85FB-349E-AA56-64F4F487F219> /System/Library/Frameworks/ServiceManagement.framework/Versions/A/ServiceManagement
    0x7fff926b3000 -     0x7fff9270aff7  com.apple.ScalableUserInterface (1.0 - 1) <F1D43DFB-1796-361B-AD4B-39F1EED3BE19> /System/Library/Frameworks/QuartzCore.framework/Versions/A/Frameworks/ScalableUserInterface.framework/Versions/A/ScalableUserInterface
    0x7fff92a06000 -     0x7fff92b7bfff  com.apple.CFNetwork (596.6.3 - 596.6.3) <883CE0E5-17B6-3227-B7B1-0CCC16D2739E> /System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
    0x7fff92b93000 -     0x7fff92e64fff  com.apple.security (7.0 - 55719.16.5) <0EEE5DDE-77FB-374A-B1E0-6B19CB44E8EC> /System/Library/Frameworks/Security.framework/Versions/A/Security
    0x7fff92e7b000 -     0x7fff92e7bfff  libkeymgr.dylib (25) <CC9E3394-BE16-397F-926B-E579B60EE429> /usr/lib/system/libkeymgr.dylib
    0x7fff92ebd000 -     0x7fff92ec5ff7  libsystem_dnssd.dylib (379.38.1) <BDCB8566-0189-34C0-9634-35ABD3EFE25B> /usr/lib/system/libsystem_dnssd.dylib
    0x7fff92ec6000 -     0x7fff931ddff7  com.apple.CoreServices.CarbonCore (1037.6 - 1037.6) <1E567A52-677F-3168-979F-5FBB0818D52B> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
    0x7fff931de000 -     0x7fff931e9fff  com.apple.CommonAuth (3.0 - 2.0) <1CA95702-DDC7-3ADB-891E-7F037ABDDA14> /System/Library/PrivateFrameworks/CommonAuth.framework/Versions/A/CommonAuth

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 1
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 9693
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=146.4M resident=67.8M(46%) swapped_out_or_unallocated=78.6M(54%)
Writable regions: Total=21.8M written=416K(2%) resident=836K(4%) swapped_out=0K(0%) unallocated=21.0M(96%)
 
REGION TYPE                      VIRTUAL
===========                      =======
CoreServices                       1120K
MALLOC                             11.5M
MALLOC guard page                    48K
STACK GUARD                        56.0M
Stack                              10.0M
VM_ALLOCATE                          16K
__DATA                             10.6M
__IMAGE                             528K
__LINKEDIT                         52.2M
__TEXT                             94.1M
__UNICODE                           544K
shared memory                       308K
===========                      =======
TOTAL                             237.1M


My question is: What am i doing wrong? Am i releasing something i shouldn't?
--
Ștefan BĂLU
Tel: +40757 377 489
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