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This was first observed in winpthreads from trunk r6478.
ktietz claimed to have found some problems with mutex destruction, and
committed r6481, then r6482.
After hours of running glimagesink and digging highly verbose log
output, i came to a conclusion that r6482 is not a good idea, and that
winpthreads must only destroy mutexes that have zero references to them.
After that i went back to r6481 and found the reason why winpthreads
busylooped indefinitely. It locked the global spinlock, while trying
to ref a mutex before destroying it, and failed to release it.
The patch against r6481 is attached.
- --
O< ascii ribbon - stop html email! - www.asciiribbon.org
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Index: src/mutex.c
===================================================================
--- src/mutex.c (revision 6481)
+++ src/mutex.c (working copy)
@@ -144,7 +144,7 @@
else if (m_->valid != LIFE_MUTEX)
r = EINVAL;
else if (m_->busy)
- return 0xbeef; /* Indicate we want to wait here. */
+ r = 0xbeef; /* Indicate we want to wait here. */
else if (COND_LOCKED(m_))
r = EBUSY;
else
------------------------------------------------------------------------------
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