Re: Thread Deadlock
Re: Thread Deadlock
- Subject: Re: Thread Deadlock
- From: Matt Gough <email@hidden>
- Date: Wed, 16 May 2012 10:23:08 +0100
Graham,
I have seen similar hangs in other apps while trying to access recent items menu.
On my Mac I put it down to occasional disk freezing issues quite common on the model of disk I am using, but maybe its software related after all.
Matt
On 15 May 2012, at 00:44, Graham Cox wrote:
> Hi all,
>
> A user reported our app "froze" and had to be force quit, and provided this trace from the crash report.
>
> It looks to me to be a classic thread deadlock in the bowels of the kernel - can anyone comment? Is there anything we can do about this sort of thing, or just file a bug and hope?
>
>
> --Graham
>
> Report (significantly truncated for size)
>
>
> OS Version: 10.7.3 (Build 11D50b)
> Architecture: x86_64
> Report Version: 9
>
> Parent: launchd [150]
>
> PID: 1135
> Event: hang
> Duration: 5.24s
> Steps: 51 (100ms sampling interval)
>
>
> 51 -[NSMenu _populateFromDelegateWithEventRef:] + 213 (in AppKit) [0x7fff8ba8dd7f]
> 51 -[NSDocumentControllerOpenRecentMenuDelegate updateMenu:withEvent:withFlags:] + 45 (in AppKit) [0x7fff8bb102c3]
> 51 -[NSDocumentController(NSInternal) _populateOpenRecentMenu:includingIcons:] + 111 (in AppKit) [0x7fff8bced0ab]
> 51 -[NSDocumentController(NSPrivate) _recentDocumentURLsForKey:] + 146 (in AppKit) [0x7fff8bcf1813]
> 51 -[NSDocumentController _notePendingRecentDocumentURLsForKey:] + 75 (in AppKit) [0x7fff8bce4f94]
> 51 -[NSDocumentController maximumRecentDocumentCount] + 169 (in AppKit) [0x7fff8bb5935a]
> 51 _LSGetRecentItemCount + 55 (in LaunchServices) [0x7fff9397a330]
> 51 LSSharedFileListCopyProperty + 219 (in LaunchServices) [0x7fff9397a4f9]
> 51 _SFLGetMaxItemCount + 25 (in OSServices) [0x7fff8e83e287]
> 51 __psynch_mutexwait + 10 (in libsystem_kernel.dylib) [0x7fff8eae6bf2]
> Kernel stack:
> 51 lo64_unix_scall + 23 (in mach_kernel) [0x2e4977]
> 51 unix_syscall64 + 554 (in mach_kernel) [0x5f166a]
> 51 psynch_mutexwait + 1450 (in mach_kernel) [0x5c4cba]
> 51 ksyn_block_thread_locked + 77 (in mach_kernel) [0x5beddd]
> 51 thread_block + 33 (in mach_kernel) [0x22f771]
> 51 thread_block_reason + 331 (in mach_kernel) [0x22f62b]
> 51 thread_continue + 1729 (in mach_kernel) [0x22f3a1]
> 51 machine_switch_context + 582 (in mach_kernel) [0x2cba26]
>
> Thread 0x65b57 DispatchQueue 2
> User stack:
> 51 _dispatch_mgr_thread + 54 (in libdispatch.dylib) [0x7fff89b9e14e]
> 51 kevent + 10 (in libsystem_kernel.dylib) [0x7fff8eae77e6]
> Kernel stack:
> 51 kqueue_scan + 480 (in mach_kernel) [0x559740]
>
> Thread 0x66e05
> User stack:
> 51 thread_start + 13 (in libsystem_c.dylib) [0x7fff8b6f0b75]
> 51 _pthread_start + 335 (in libsystem_c.dylib) [0x7fff8b6ed8bf]
> 51 __NSThread__main__ + 1575 (in Foundation) [0x7fff8feb06c6]
> 51 -[NSThread main] + 68 (in Foundation) [0x7fff8feb074e]
> 51 kevent + 10 (in libsystem_kernel.dylib) [0x7fff8eae77e6]
> Kernel stack:
> 51 kqueue_scan + 480 (in mach_kernel) [0x559740]
>
> Thread 0x78af7
> User stack:
> 46 start_wqthread + 13 (in libsystem_c.dylib) [0x7fff8b6f0b85]
> 46 __workq_kernreturn + 10 (in libsystem_kernel.dylib) [0x7fff8eae7192]
> Kernel stack:
> 46 workqueue_exit + 1808 (in mach_kernel) [0x5c6150]
>
> Thread 0x78af8
> User stack:
> 46 start_wqthread + 13 (in libsystem_c.dylib) [0x7fff8b6f0b85]
> 46 __workq_kernreturn + 10 (in libsystem_kernel.dylib) [0x7fff8eae7192]
> Kernel stack:
> 46 workqueue_exit + 1808 (in mach_kernel) [0x5c6150]
>
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