diff options
Diffstat (limited to 'src/include/storage')
| -rw-r--r-- | src/include/storage/s_lock.h | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h index d3f9d6d9b2f..eb9a808f099 100644 --- a/src/include/storage/s_lock.h +++ b/src/include/storage/s_lock.h @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/include/storage/s_lock.h,v 1.50 1998/09/21 02:25:27 momjian Exp $ + * $Header: /cvsroot/pgsql/src/include/storage/s_lock.h,v 1.51 1998/10/01 01:53:50 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -243,16 +243,20 @@ tas(slock_t *s_lock) * HP-UX (PA-RISC) * * Note that slock_t on PA-RISC is a structure instead of char - * (see storage/ipc.h). + * (see include/port/hpux.h). * * a "set" slock_t has a single word cleared. a "clear" slock_t has * all words set to non-zero. tas() in tas.s */ -static const slock_t clear_lock = -{{-1, -1, -1, -1}}; -#define S_UNLOCK(lock) (*(lock) = clear_lock) /* struct assignment */ +#define S_UNLOCK(lock) \ +{ \ + volatile slock_t *lock_ = (volatile slock_t *) (lock); \ + lock_->sema[0] = lock_->sema[1] = lock_->sema[2] = lock_->sema[3] = -1; \ +} + #define S_LOCK_FREE(lock) ( *(int *) (((long) (lock) + 15) & ~15) != 0) + #endif /* __hpux */ @@ -322,9 +326,10 @@ static const slock_t clear_lock = extern void s_lock(volatile slock_t *lock, const char *file, const int line); #define S_LOCK(lock) \ - if (TAS((volatile slock_t *) lock)) {\ - s_lock((volatile slock_t *) lock, __FILE__, __LINE__); \ - } else + do { \ + if (TAS((volatile slock_t *) lock)) \ + s_lock((volatile slock_t *) lock, __FILE__, __LINE__); \ + } while (0) #endif /* S_LOCK */ #if !defined(S_LOCK_FREE) |