Hello, Have you tried to make a small test-case application that would be easy to debug ?
Maybe a small Cocoa application, with an event loop (as in thread-0) and some worker threads that create strings, split them and call GC would do the trick. Regards, Laurent Etiemble. 2010/5/15 anthony taranto <anthony.tara...@gmail.com> > I'm experiencing an intermittent crash with my multi-threaded monobjc > application on OSX 10.6 Snow Leopard. There doesn't seem to be any > reliable sequence of user interaction that triggers this crash, but > the crash dumps all show a similar pattern: EXC_CRASH in thread 0 > while another thread is executing a managed garbage collection after a > String.Split(). Example follows. I'm not sure what an appropriate fix > or workaround to this problem is. Any help is greatly appreciated. > > > Exception Type: EXC_CRASH (SIGILL) > Exception Codes: 0x0000000000000000, 0x0000000000000000 > Crashed Thread: 0 Dispatch queue: com.apple.main-thread > > Thread 0 Crashed: Dispatch queue: com.apple.main-thread > 0 libSystem.B.dylib 0x92b6d2fa mach_msg_trap + 10 > 1 libSystem.B.dylib 0x92b6da67 mach_msg + 68 > 2 com.apple.CoreFoundation 0x9945d00f __CFRunLoopRun + 2079 > 3 com.apple.CoreFoundation 0x9945c0f4 CFRunLoopRunSpecific + 452 > 4 com.apple.CoreFoundation 0x9945bf21 CFRunLoopRunInMode + 97 > 5 com.apple.HIToolbox 0x97ada0fc RunCurrentEventLoopInMode + > 392 > 6 com.apple.HIToolbox 0x97ad9eb1 ReceiveNextEventCommon + > 354 > 7 com.apple.HIToolbox 0x97ad9d36 > BlockUntilNextEventMatchingListInMode + 81 > 8 com.apple.AppKit 0x97e12135 _DPSNextEvent + 847 > 9 com.apple.AppKit 0x97e11976 -[NSApplication > nextEventMatchingMask:untilDate:inMode:dequeue:] + 156 > 10 com.apple.AppKit 0x97dd3bef -[NSApplication run] + 821 > 11 ??? 0x14b5cdda 0 + 347459034 > 12 ??? 0x14b5cd04 0 + 347458820 > 13 ??? 0x14b5cc96 0 + 347458710 > 14 ??? 0x14b5cc76 0 + 347458678 > 15 ??? 0x020bc1f2 0 + 34324978 > > [...] > > Thread 13: > 0 libmono.0.dylib 0x018a9ae4 GC_clear_stack_inner + 22 > (misc.c:295) > 1 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 2 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 3 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 4 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 5 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 6 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 7 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 8 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 9 libmono.0.dylib 0x018a9b15 GC_clear_stack_inner + 71 > (misc.c:301) > 10 libmono.0.dylib 0x018a9bc1 GC_clear_stack + 153 > (misc.c:343) > 11 libmono.0.dylib 0x018a5484 GC_malloc_atomic + 150 > (malloc.c:262) > 12 libmono.0.dylib 0x018114dd > mono_object_allocate_ptrfree + 46 (object.c:3824) > 13 libmono.0.dylib 0x018117fb mono_string_new_size + 146 > (object.c:4395) > 14 libmono.0.dylib 0x018407b5 > ves_icall_System_String_InternalSplit + 921 (string-icalls.c:145) > 15 ??? 0x164849b6 0 + 373836214 > [...] >
