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| author | Siddhesh Poyarekar <siddhesh@redhat.com> | 2013-10-01 20:35:28 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@redhat.com> | 2013-10-01 20:35:28 +0530 |
| commit | ad4e70da03353444aad95a4fbbd03cef2b750647 (patch) | |
| tree | b7fd16e0cdb2f30deb7e3cb37c02d13fb39f9f83 /nptl | |
| parent | fd96752258901457148b702093a34a3d8c0fb7db (diff) | |
| download | glibc-ad4e70da03353444aad95a4fbbd03cef2b750647.tar.gz glibc-ad4e70da03353444aad95a4fbbd03cef2b750647.tar.xz glibc-ad4e70da03353444aad95a4fbbd03cef2b750647.zip | |
Fix PI mutex check in pthread_cond_broadcast and pthread_cond_signal
Fixes BZ #15988. The check had a typo - it checked for PTHREAD_MUTEX_ROBUST_NP instead of PTHREAD_MUTEX_ROBUST_NORMAL_NP. It has now been replaced by the already existing convenience macro USE_REQUEUE_PI.
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 9 | ||||
| -rw-r--r-- | nptl/pthread_cond_broadcast.c | 5 | ||||
| -rw-r--r-- | nptl/pthread_cond_signal.c | 7 |
3 files changed, 11 insertions, 10 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 9f25dfe2ae..29469fcd91 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,12 @@ +2013-10-01 Siddhesh Poyarekar <siddhesh@redhat.com> + + [BZ #15988] + * pthread_cond_broadcast.c (__pthread_cond_broadcast) + [lll_futex_cmp_requeue_pi && __ASSUME_REQUEUE_PI]: Use + USE_REQUEUE_PI. + * pthread_cond_signal.c (__pthread_cond_signal) + [lll_futex_cmd_requeue_pi && __ASSUME_REQUEUE_PI]: Likewise. + 2013-09-27 Siddhesh Poyarekar <siddhesh@redhat.com> * sysdeps/pthread/bits/libc-lock.h [_LIBC && (!NOT_IN_libc || diff --git a/nptl/pthread_cond_broadcast.c b/nptl/pthread_cond_broadcast.c index 0702ec0ec2..7ba9efa0c0 100644 --- a/nptl/pthread_cond_broadcast.c +++ b/nptl/pthread_cond_broadcast.c @@ -63,10 +63,7 @@ __pthread_cond_broadcast (cond) #if (defined lll_futex_cmp_requeue_pi \ && defined __ASSUME_REQUEUE_PI) - int pi_flag = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NP; - pi_flag &= mut->__data.__kind; - - if (pi_flag == PTHREAD_MUTEX_PRIO_INHERIT_NP) + if (USE_REQUEUE_PI (mut)) { if (lll_futex_cmp_requeue_pi (&cond->__data.__futex, 1, INT_MAX, &mut->__data.__lock, futex_val, diff --git a/nptl/pthread_cond_signal.c b/nptl/pthread_cond_signal.c index 102d0b380c..ffc35dc9e1 100644 --- a/nptl/pthread_cond_signal.c +++ b/nptl/pthread_cond_signal.c @@ -49,14 +49,9 @@ __pthread_cond_signal (cond) #if (defined lll_futex_cmp_requeue_pi \ && defined __ASSUME_REQUEUE_PI) - int pi_flag = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NP; pthread_mutex_t *mut = cond->__data.__mutex; - /* Do not use requeue for pshared condvars. */ - if (mut != (void *) ~0l) - pi_flag &= mut->__data.__kind; - - if (__builtin_expect (pi_flag == PTHREAD_MUTEX_PRIO_INHERIT_NP, 0) + if (USE_REQUEUE_PI (mut) /* This can only really fail with a ENOSYS, since nobody can modify futex while we have the cond_lock. */ && lll_futex_cmp_requeue_pi (&cond->__data.__futex, 1, 0, |