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| author | Ulrich Drepper <drepper@redhat.com> | 2005-09-08 17:39:07 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-09-08 17:39:07 +0000 |
| commit | b9b8cf036684d69a1bac70cb604ad7dd4c31b8c4 (patch) | |
| tree | 73a4fd4eedf757760c1ca1f7745407585efe67a3 /nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h | |
| parent | 4043787150772987ca8e377b2d488dae6b5d8a8b (diff) | |
| download | glibc-b9b8cf036684d69a1bac70cb604ad7dd4c31b8c4.tar.gz glibc-b9b8cf036684d69a1bac70cb604ad7dd4c31b8c4.tar.xz glibc-b9b8cf036684d69a1bac70cb604ad7dd4c31b8c4.zip | |
(FUTEX_WAKE_OP, FUTEX_OP_CLEAR_WAKE_IF_GT_ONE): Define. (lll_futex_wake_unlock): Define.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h index 4626aec524..8d12db3a16 100644 --- a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h @@ -30,6 +30,8 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -76,6 +78,19 @@ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ }) +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, \ + (futexp), FUTEX_WAKE_OP, (nr_wake), \ + (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + #ifdef __sparc32_atomic_do_lock #error SPARC < v9 does not support compare and swap which is essential for futex based locking #endif |