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| author | Ulrich Drepper <drepper@redhat.com> | 2000-09-26 21:01:24 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-09-26 21:01:24 +0000 |
| commit | 7c3dac53024e7f9122b8b406cfc2622e68149a49 (patch) | |
| tree | b1f239862ad3827b01e1b837a7128059a7a3abe9 /linuxthreads/spinlock.h | |
| parent | 09bf6406b102b89e52f734b517030b86b7583aaf (diff) | |
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Update.
2000-09-26 Ulrich Drepper <drepper@redhat.com>
* spinlock.h (__pthread_set_own_extricate_if): Add back locking
and explain why.
Diffstat (limited to 'linuxthreads/spinlock.h')
| -rw-r--r-- | linuxthreads/spinlock.h | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/linuxthreads/spinlock.h b/linuxthreads/spinlock.h index b3d02314bf..c194d79bd6 100644 --- a/linuxthreads/spinlock.h +++ b/linuxthreads/spinlock.h @@ -214,13 +214,9 @@ static inline long atomic_decrement(struct pthread_atomic *pa) static inline void __pthread_set_own_extricate_if(pthread_descr self, pthread_extricate_if *peif) { -#if 0 + /* The locks here are not ensuring an atomic update of the p_extricate + pointer. They protect users of the pointer from using stale memory. */ __pthread_lock(THREAD_GETMEM(self, p_lock), self); THREAD_SETMEM(self, p_extricate, peif); __pthread_unlock(THREAD_GETMEM (self, p_lock)); -#else - /* I don't think that getting the lock is necessary. All we do is an - atomic write. */ - THREAD_SETMEM(self, p_extricate, peif); -#endif } |