I'm using helgrind to look for lock order violations, and got one:
==14876== ----------------------------------------------------------------
==14876==
==14876== Thread #6: lock order "0xD13D7C8 before 0xCFA7BB4" violated
==14876==
==14876== Observed (incorrect) order is: acquisition of lock at 0xCFA7BB4
==14876== (stack unavailable)
==14876==
==14876== followed by a later acquisition of lock at 0xD13D7C8
==14876== at 0x57748: pthread_mutex_lock (hg_intercepts.c:506)
==14876== by 0x86F362E: osiSemaphore::Take(int) const (osiSemaphore.h:357)
==14876== by 0x86F36D0: osiRWSemaphore::wTake(int)
(osiSemaphoreLinux.cpp:423)
==14876== by 0x86F377A: osiRWSemAutoP::osiRWSemAutoP(osiSemaphoreMode,
osiRWSemaphore*) (osiSemaphoreLinux.cpp:503)
==14876== by 0x862147F: pdbMirrorLink::CreateOutNotification(char const*,
int, mirrorLinkNotifyIn*) (pdbMirrorLink.cpp:1264)
==14876== by 0x8621E15: pdbMirrorLink::UpdateNotifications(bool, unsigned
int) (pdbMirrorLink.cpp:1388)
==14876== by 0x865A78C: pdbTreeCache::ActivateIndex(unsigned int)
(pdbTreeCacheNode.cpp:1866)
==14876== by 0x861737D: pdbMirrorLinkCacheHelper::_ActivateIndex(osiJQData*)
(pdbMirrorLink.h:544)
==14876== by 0x85E0D88: osiJobQueue::entry() (osiJob.cpp:119)
==14876== by 0x86F0A88: osiThread::MyRun(void*) (osiThreadLinux.cpp:194)
==14876== by 0x86EF814: threadMain(void*) (osiThreadLauncherLinux.cpp:50)
==14876== by 0x5A608: mythread_wrapper (hg_intercepts.c:219)
What is the cause of "stack unavailable"? This error message doesn't give me
enough information to go on, since it doesn't tell me anything about what the
first incorrectly locked mutex is or about the stacks establishing the correct
locking order.
Phil
-----
Phil Longstaff
Senior Software Engineer
x2904
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