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Diagnostic for deadlocked threads

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@38722 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 2015-06-30 08:43:28 +00:00
parent 8c07ae4a05
commit ec04844484
3 changed files with 20 additions and 4 deletions
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11
Source/NSLock.m
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@ -91,7 +91,7 @@
}\
if (EDEADLK == err)\
{\
_NSLockError(self, _cmd, YES);\
_NSLockError(self, _cmd, YES, &_mutex);\
}\
}
#define MLOCKBEFOREDATE \
@ -132,10 +132,15 @@ static pthread_mutexattr_t attr_recursive;
/*
* OS X 10.5 compatibility function to allow debugging deadlock conditions.
*/
void _NSLockError(id obj, SEL _cmd, BOOL stop)
void _NSLockError(id obj, SEL _cmd, BOOL stop, pthread_mutex_t *mutex)
{
#if defined(HAVE_PTHREAD_MUTEX_OWNER)
NSLog(@"*** -[%@ %@]: deadlock (%@), held by thread %d", [obj class],
NSStringFromSelector(_cmd), obj, mutex->__data.__owner);
#else
NSLog(@"*** -[%@ %@]: deadlock (%@)", [obj class],
NSStringFromSelector(_cmd), obj);
#endif
NSLog(@"*** Break on _NSLockError() to debug.");
if (YES == stop)
pthread_mutex_lock(&deadlock);
@ -215,7 +220,7 @@ MLOCK
}
if (EDEADLK == err)
{
_NSLockError(self, _cmd, NO);
_NSLockError(self, _cmd, NO, &_mutex);
}
sched_yield();
} while ([limit timeIntervalSinceNow] > 0);