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authorUlrich Drepper <drepper@redhat.com>2009-07-17 19:08:54 -0700
committerUlrich Drepper <drepper@redhat.com>2009-07-17 19:08:54 -0700
commitf351f2b756e634fde2482a8f9790944db868162b (patch)
treeb9aeb45a657589b63b4228f18e6efcb2fd6bad38 /nptl/ChangeLog
parent312d667b85fade523b05f73e0620fb5365fb68a7 (diff)
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Extend x86-64 sem_timedwait to use futex syscall with absolute timeout.
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2009-07-17 Ulrich Drepper <drepper@redhat.com>
+ * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S (sem_timedwait):
+ If possible use FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME to directly
+ use absolute timeout.
+
* sysdeps/unix/sysv/linux/x86_64/sem_wait.S (sem_wait): Optimize
handling of uncontested semaphore.