Thread number limit

Hi !
Is there a thread number limit in a JVM ?
Thanks
Ludovic

The OS limits the number of threads which can be run without significant overhead.
This is 100 - 1000 depending on the OS.

Similar Messages

  • Thread number limitation on Sun One Web Server 6.1 on Solaris 9

    Hi.
    I am testing my servlet on Web Server 6.1 on Solaris 9 (SPARC). I am logging start of HTTPServlet.doPost() method and end of it, by calling GenericServlet.log() method for perfomance check.
    When I request more than two request(it takes long time) simultaneously from browser, my servlet logs like:
    doPost start
    doPost start
    doPost end
    doPost start
    doPost end
    doPost start
    :that is ,two requests is processed concurrent by threads, and another requests waiting, and after each running thread ends, waiting request is processed one by one.
    I think there is some limitation of thread or connections, so I checked magnus.conf. But RqThrottle is set to 128. And I cannot find any thread number settings.
    My magnus.conf is as follows.
    # The NetsiteRoot, ServerName, and ServerID directives are DEPRECATED.
    # They will not be supported in future releases of the Web Server.
    NetsiteRoot /export/home0/SUNWwbsvr
    ServerName test03
    ServerID https-test03
    RqThrottle 128
    DNS off
    Security off
    PidLog /export/home0/SUNWwbsvr/https-test03/logs/pid
    User webservd
    StackSize 131072
    TempDir /tmp/https-test03-8ac62f09
    UseNativePoll off
    PostThreadsEarly on
    KernelThreads off
    Init fn=flex-init access="$accesslog" format.access="%Ses->client.ip% - %Req->vars.auth-user% [%SYSDATE%] \"%Req->reqpb.clf-request%\" %Req->srvhdrs.clf-status% %Req->srvhdrs.content-length%"
    Init fn="load-modules" shlib="/export/home0/SUNWwbsvr/bin/https/lib/libj2eeplugin.so" shlib_flags="(global|now)"Why web server do not process more than two requests concurrent? Which server configuration should I check?
    Thanks in advance.

    I don't think I ever ran into that kind of a limit. Does the servlet use database connections (maybe the connection pool is empty) or other critical sections / large synchronized blocks?
    Try a minimal servlet that takes a while to execute:
        doGet(...)
            log("sleep starting " + Thread.currentThread().getName());
            try {
                Thread.sleep(30000);
            } catch (Exception e) { }
            log("sleep done " + Thread.currentThread().getName());
            response.getOutputStream().println("good morning");

  • How to change the thread number for user account

    I remember that for each user account, we can limit the maximum thread number it can create for a user process. But how to change this number?
    Thanks,
    Iris

    Hi ,
    I do not think that there is a way to control the number of "threads per user".
    Are you referring to "thread id" ? Please elaborate on your requirement.
    You may want to take a look at the complete list of process sizing tunables
    at:
    http://docs.sun.com/ab2/coll.707.1/SOLTUNEPARAMREF/@Ab2PageView/idmatch(CHAPTER2-4)?Ab2Lang=C&Ab2Enc=iso-8859-1#CHAPTER2-4
    The link can also be accessed as:
    http://docs.sun.com
    Collection Titles
    Solaris Tunable Parameters Collection
    Solaris Tunable Parameters Reference Manual HTH
    Gopinath.
    Developer Technical Support
    Sun Microsystems Inc

  • Pr CS6 on MacPRO 10.9.4 crashes randomly hang report shows Dispatch Thread Soft Limit Reached: 120

    We have an Edit computer that IT brought back to us with a newly loaded Mavericks 10.9.4. and a fresh installation of CS6. We also have an added AJA LHi card.
    Our editor is getting random crashes often while just searching through his clips. When I look at the diagnostic reports . I consistently see the message - Dispatch Thread Soft Limit Reached:  120  (too many dispatch threads blocked in synchronous operations). I will paste the whole hang report below.
    Any ideas? I have found other threads on the net discussing this but nothing really specific to Adobe or CS6.
    ----------- Hang Report -------------
    Date/Time:  
    2014-07-29 13:44:33 -0400
    OS Version: 
    10.9.4 (Build 13E28)
    Architecture:
    x86_64
    Report Version:  18
    Command:    
    Premiere Pro
    Path:       
    /Applications/Adobe Premiere Pro CS6/Adobe Premiere Pro CS6.app/Contents/MacOS/Adobe Premiere Pro CS6
    Version:    
    6.0.5 (6.0.5)
    Parent:     
    launchd [878]
    PID:        
    1033
    Event:      
    hang
    Duration:   
    1.73s
    Steps:      
    17 (100ms sampling interval)
    Hardware model:  MacPro5,1
    Active cpus:
    24
    Fan speed:  
    1437 rpm
    Free pages: 
    4747363 pages (-2299)
    Pageins:    
    21 pages
    Pageouts:   
    0 pages
    Swapins:    
    0 pages
    Swapouts:   
    0 pages
    Process:    
    Adobe Premiere Pro CS6 [1033]
    Path:       
    /Applications/Adobe Premiere Pro CS6/Adobe Premiere Pro CS6.app/Contents/MacOS/Adobe Premiere Pro CS6
    Architecture:
    x86_64
    Parent:     
    launchd [878]
    UID:        
    504
    Task size:  
    635968 pages
    CPU Time:   
    0.027s
    Dispatch Thread Soft Limit Reached:  120  (too many dispatch threads blocked in synchronous operations)
      Thread 0x395c
    DispatchQueue 1     
    priority 47    
    cpu time   0.010s
      17 start + 52 (Adobe Premiere Pro CS6) [0x10000361c]
    17 main + 647 (Adobe Premiere Pro CS6) [0x1000038b7]
    17 Run + 247 (Startup) [0x10c8ef1d7]
    17 AppMain + 380 (Frontend) [0x10c77ed0c]
    17 FE::Application::Run(std::basic_string<unsigned short, std::char_traits<unsigned short>, dvacore::utility::SmallBlockAllocator::STLAllocator<unsigned short> > const&) + 5681 (Frontend) [0x10c727dff]
    17 FE::MacApplication::RunSelf() + 44 (Frontend) [0x10c77d794]
    17 -[NSApplication run] + 553 (AppKit) [0x7fff9771199c]
    17 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122 (AppKit) [0x7fff9771d89b]
    17 _DPSNextEvent + 1434 (AppKit) [0x7fff9771e24e]
    17 _BlockUntilNextEventMatchingListInModeWithFilter + 65 (HIToolbox) [0x7fff99d375bc]
    17 ReceiveNextEventCommon + 479 (HIToolbox) [0x7fff99d377b7]
    17 RunCurrentEventLoopInMode + 226 (HIToolbox) [0x7fff99d37a0d]
    17 CFRunLoopRunSpecific + 309 (CoreFoundation) [0x7fff98b36e75]
    17 __CFRunLoopRun + 1525 (CoreFoundation) [0x7fff98b376a5]
    17 __CFRunLoopDoTimers + 298 (CoreFoundation) [0x7fff98bed5aa]
    17 __CFRunLoopDoTimer + 1151 (CoreFoundation) [0x7fff98b7bf1f]
    17 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20 (CoreFoundation) [0x7fff98b7c3e4]
    17 dvacore::threads::(anonymous namespace)::RunLoopAdaptor::Execute(__CFRunLoopTimer*, void*) + 54 (dvacore) [0x1001ea466]
    17 boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<bool, bool (*)(boost::shared_ptr<dvacore::threads::(anonymous namespace)::FunctionQueue>, bool), boost::_bi::list2<boost::_bi::value<boost::shared_ptr<dvacore::threads::(anonymous namespace)::FunctionQueue> >, boost::_bi::value<bool> > >, void>::invoke(boost::detail::function::function_buffer&) + 54 (dvacore) [0x1001e9d16]
    17 dvacore::threads::(anonymous namespace)::FunctionQueue::ExecuteOneFunction(boost::shared_ptr<dvacore::threads::(anonym ous namespace)::FunctionQueue>, bool) + 151 (dvacore) [0x1001ea947]
    17 ASL::StationUtils::BroadcastMessage(ASL::ImmutableString const&, ASL::Message const&) + 66 (ASLMessaging) [0x1006fff72]
    17 ASL::Broadcaster::BroadcastMessage(ASL::Message const&) + 1565 (ASLMessaging) [0x1006f2841]
    17 FE::ApplicationErrorManager::ExecuteFunctionWithTopLevelExceptionHandler(boost::function0 <int>) + 57 (Frontend) [0x10c743735]
    17 ASL::Broadcaster::BroadcastMessageInner(ASL::Broadcaster::ListenerRecord const&, ASL::Message const&) + 39 (ASLMessaging) [0x1006f1207]
    17 FE::AutoSaveManager::OnIdle() + 284 (Frontend) [0x10c743f7e]
    17 HSL::AutoSaveProject(ASL::InterfaceRef<BE::IProject, BE::IProject>, unsigned int) + 1535 (HSL) [0x107a9535f]
    17 HSL::SaveProject(ASL::InterfaceRef<BE::IProject, BE::IProject>, std::basic_string<unsigned short, std::char_traits<unsigned short>, dvacore::utility::SmallBlockAllocator::STLAllocator<unsigned short> > const&, bool, bool) + 1016 (HSL) [0x107b3d038]
    17 HSL::ProgressDialog::DoProgressDialog(std::basic_string<unsigned short, std::char_traits<unsigned short>, dvacore::utility::SmallBlockAllocator::STLAllocator<unsigned short> > const&, ASL::InterfaceRef<ASL::IBatchOperation, ASL::IBatchOperation>) + 356 (HSL) [0x107b32bd4]
    17 DLG::ProgressDialog::DoProgressDialog(std::basic_string<unsigned short, std::char_traits<unsigned short>, dvacore::utility::SmallBlockAllocator::STLAllocator<unsigned short> > const&, ASL::InterfaceRef<ASL::IBatchOperation, ASL::IBatchOperation>, char const*) + 803 (Dialogs) [0x107f8b5a3]
    17 non-virtual thunk to MZ::(anonymous namespace)::SaveProjectOperation::Abort() + 58 (Mezzanine) [0x10550e26a]
    17 usleep + 54 (libsystem_c.dylib) [0x7fff9a4c9cb2]
    17 __semwait_signal + 10 (libsystem_kernel.dylib) [0x7fff90aaaa3a]
    *17 semaphore_wait_continue + 0 (mach_kernel) [0xffffff800023b570]
      Thread 0x3981
    DispatchQueue 2     
    priority 49    
    cpu time   0.001s
      17 _dispatch_mgr_thread + 52 (libdispatch.dylib) [0x7fff938f2136]
    17 kevent64 + 10 (libsystem_kernel.dylib) [0x7fff90aab662]
    *17 ??? (mach_kernel + 3959520) [0xffffff80005c6ae0]
      Thread 0x3ef0
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x4159
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x41f2
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x4241
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x4242
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x4243
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x4244
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x424a
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x427a
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x427f
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x4280
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x4288
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 595 (MBCProvider) [0x1051551c3]
    17 RenderIconRef(OpaqueIconRef*, unsigned int, unsigned int) + 244 (MBCProvider) [0x105154ea4]
    17 _ISPlotIconRefInContext + 115 (IconServices) [0x7fff938c15df]
    17 IconImageRequestor::CreateCGImage(_LSBinding*, unsigned int, unsigned int, __CFDictionary const*) + 351 (IconServices) [0x7fff938d1b9f]
    17 semaphore_wait_trap + 10 (libsystem_kernel.dylib) [0x7fff90aa6a56]
    *17 semaphore_wait_continue + 0 (mach_kernel) [0xffffff800023b570]
      Thread 0x4289
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x428a
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x429e
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x429f
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a0
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a1
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a2
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a3
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a4
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a5
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a6
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThreadedQueueRequest>::call<ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest> >(ASL::InterfaceRef<ASL::IThreadedQueueRequest, ASL::IThreadedQueueRequest>&, void const*) const + 54 (MBCProvider) [0x1051564b2]
    17 MBC::ProviderThumbnailRequest::Process() + 119 (MBCProvider) [0x1051556c5]
    17 MBC::ProviderXDCAMEX::GetThumbnail(std::string const&, std::string const&, int, int, MBC::ProviderRequest*) const + 364 (MBCProvider) [0x1051875a4]
    17 MBC::GetOSIconThumbnail(std::string const&, std::string const&, int, int) + 45 (MBCProvider) [0x105154f9d]
    17 __psynch_mutexwait + 10 (libsystem_kernel.dylib) [0x7fff90aaa746]
    *17 psynch_mtxcontinue + 0 (pthread) [0xffffff7f80f0aa3b]
      Thread 0x42a7
    DispatchQueue 6     
    priority 47  
      17 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff991aefb9]
    17 _pthread_wqthread + 314 (libsystem_pthread.dylib) [0x7fff991abef8]
    17 _dispatch_worker_thread2 + 40 (libdispatch.dylib) [0x7fff938f3177]
    17 _dispatch_root_queue_drain + 326 (libdispatch.dylib) [0x7fff938f2082]
    17 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff938f028d]
    17 dvacore::threads::(anonymous namespace)::WrapGCDAsyncCall(void*) + 54 (dvacore) [0x1001f93e6]
    17 void boost::_mfi::mf0<void, ASL::IThr

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