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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-02-10 23:06:33 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-02-11 00:32:44 +0100 |
| commit | 8ba6ad703cb38ec57cdb473650ac289e5f8496d5 (patch) | |
| tree | 843104571af29b6872721b6477d3b2e2444a3e96 /sysdeps/htl/pt-rwlock-timedwrlock.c | |
| parent | cd7965bd970b0a298e734acc9dafae0a5db5f712 (diff) | |
| download | glibc-8ba6ad703cb38ec57cdb473650ac289e5f8496d5.tar.gz glibc-8ba6ad703cb38ec57cdb473650ac289e5f8496d5.tar.xz glibc-8ba6ad703cb38ec57cdb473650ac289e5f8496d5.zip | |
hurd: Add __pthread_spin_wait and use it
900778283ac3 ("htl: make pthread_spin_lock really spin") made
pthread_spin_lock really spin and not block, but the current users of
__pthread_spin_lock were assuming that it blocks, i.e. they use it as a
lightweight mutex fitting in just one int.
__pthread_spin_wait provides that support back.
Diffstat (limited to 'sysdeps/htl/pt-rwlock-timedwrlock.c')
| -rw-r--r-- | sysdeps/htl/pt-rwlock-timedwrlock.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/htl/pt-rwlock-timedwrlock.c b/sysdeps/htl/pt-rwlock-timedwrlock.c index 57c46dccca..d0293c1e96 100644 --- a/sysdeps/htl/pt-rwlock-timedwrlock.c +++ b/sysdeps/htl/pt-rwlock-timedwrlock.c @@ -33,7 +33,7 @@ __pthread_rwlock_timedwrlock_internal (struct __pthread_rwlock *rwlock, int drain; struct __pthread *self; - __pthread_spin_lock (&rwlock->__lock); + __pthread_spin_wait (&rwlock->__lock); if (__pthread_spin_trylock (&rwlock->__held) == 0) /* Successfully acquired the lock. */ { @@ -65,7 +65,7 @@ __pthread_rwlock_timedwrlock_internal (struct __pthread_rwlock *rwlock, __pthread_block (self); } - __pthread_spin_lock (&rwlock->__lock); + __pthread_spin_wait (&rwlock->__lock); if (self->prevp == NULL) /* Another thread removed us from the queue, which means a wakeup message has been sent. It was either consumed while we were blocking, or |