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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/mach/htl/bits/spin-lock-inline.h | |
| 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/mach/htl/bits/spin-lock-inline.h')
| -rw-r--r-- | sysdeps/mach/htl/bits/spin-lock-inline.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sysdeps/mach/htl/bits/spin-lock-inline.h b/sysdeps/mach/htl/bits/spin-lock-inline.h index 556bdd4c28..006b6fd5f2 100644 --- a/sysdeps/mach/htl/bits/spin-lock-inline.h +++ b/sysdeps/mach/htl/bits/spin-lock-inline.h @@ -71,6 +71,15 @@ __pthread_spin_lock (__pthread_spinlock_t *__lock) return 0; } +__PT_SPIN_INLINE int __pthread_spin_wait (__pthread_spinlock_t *__lock); + +__PT_SPIN_INLINE int +__pthread_spin_wait (__pthread_spinlock_t *__lock) +{ + __spin_lock ((__spin_lock_t *) __lock); + return 0; +} + __PT_SPIN_INLINE int __pthread_spin_unlock (__pthread_spinlock_t *__lock); __PT_SPIN_INLINE int |