FYI: Remember that corefoundation is open source. 10.6.2 can be found at:
http://www.opensource.apple.com/source/CF/CF-550.13/
EXC_BREAKPOINT is an "int 3" instruction (and HALT in CF code is typically used
for this).
>From CFRunLoopStop from 10.6.2 sources:
void CFRunLoopWakeUp(CFRunLoopRef rl) {
CHECK_FOR_FORK();
#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED
kern_return_t ret;
/* We unconditionally try to send the message, since we don't want
* to lose a wakeup, but the send may fail if there is already a
* wakeup pending, since the queue length is 1. */
ret = __CFSendTrivialMachMessage(rl->_wakeUpPort, 0, MACH_SEND_TIMEOUT, 0);
if (ret != MACH_MSG_SUCCESS && ret != MACH_SEND_TIMED_OUT) {
HALT;
}
#else
Maybe this is what caused your crash.
Jesper
On Apr 8, 2010, at 1:03 PM, vincent habchi wrote:
Hi,
I was running quite an intensive test on creating/freeing threads running
RunLoops, and I got a rather unexpected crash while executing CFRunLoopStop ():
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0 com.apple.CoreFoundation 0x00007fff801da6d1 CFRunLoopWakeUp + 129
[…]
Since I had 34 other threads active, I wonder if there is any practical
threshold on the number of Run Loops Snow Leopard can manage?
Thanks,
Vincent_______________________________________________
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