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[BZ #14652] When a thread waiting in pthread_cond_wait with a PI mutex is cancelled after it has returned successfully from the futex syscall but just before async cancellation is disabled, it enters its cancellation handler with the mutex held and simply calling a mutex_lock again will result in a deadlock. Hence, it is necessary to see if the thread owns the lock and try to lock it only if it doesn't.
10 lines
261 B
Plaintext
10 lines
261 B
Plaintext
#include <pthreadP.h>
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-- These PI macros are used by assembly code.
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MUTEX_KIND offsetof (pthread_mutex_t, __data.__kind)
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ROBUST_BIT PTHREAD_MUTEX_ROBUST_NORMAL_NP
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PI_BIT PTHREAD_MUTEX_PRIO_INHERIT_NP
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PS_BIT PTHREAD_MUTEX_PSHARED_BIT
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TID_MASK FUTEX_TID_MASK
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