diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2003-09-21 07:40:24 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-09-21 07:40:24 +0000 |
| commit | 71451de2f1245b21ce3ba407068c453a866c03d6 (patch) | |
| tree | 6646149e32cd4e762f758fa4796a62aab0ea8adf /nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S | |
| parent | 56a4aa9886dc1145f8feac66b66216a44cb092c1 (diff) | |
| download | glibc-71451de2f1245b21ce3ba407068c453a866c03d6.tar.gz glibc-71451de2f1245b21ce3ba407068c453a866c03d6.tar.xz glibc-71451de2f1245b21ce3ba407068c453a866c03d6.zip | |
Update.
2003-09-21 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Completely revamp the locking macros. No distinction between normal and mutex locking anymore. * sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Rewrite mutex locking. Merge bits from lowlevelmutex.S we still need. * sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S: Removed. * Makefile (routines): Remove libc-lowlevelmutex. (libpthread-rountines): Remove lowlevelmutex. * pthread_barrier_wait.S: Adjust for new mutex implementation. * pthread_cond_broadcast.S: Likewise. * pthread_cond_timedwait.S: Likewise. * pthread_cond_wait.S: Likewise. * pthread_rwlock_rdlock.S: Likewise. * pthread_rwlock_timedrdlock.S: Likewise. * pthread_rwlock_timedwrlock.S: Likewise. * pthread_rwlock_unlock.S: Likewise. * pthread_rwlock_wrlock.S: Likewise. * pthread_cond_signal.S: Likewise. Don't use requeue.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S | 34 |
1 files changed, 7 insertions, 27 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S index 95f3aad1d8..d86ee054a9 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S @@ -45,18 +45,18 @@ __pthread_cond_signal: pushl %ebx - pushl %esi pushl %edi - movl 16(%esp), %edi + movl 12(%esp), %edi /* Get internal lock. */ - movl $1, %eax + movl $1, %edx + xorl %eax, %eax LOCK #if cond_lock == 0 - xaddl %eax, (%edi) + cmpxchgl %edx, (%edi) #else - xaddl %eax, cond_lock(%edi) + cmpxchgl %edx, cond_lock(%edi) #endif testl %eax, %eax jne 1f @@ -78,21 +78,11 @@ __pthread_cond_signal: adcl $0, 4(%ebx) /* Wake up one thread by moving it to the internal lock futex. */ - movl $FUTEX_REQUEUE, %ecx + movl $FUTEX_WAKE, %ecx movl $SYS_futex, %eax - xorl %edx, %edx - movl $1, %esi + movl $1, %edx ENTER_KERNEL -#ifndef __ASSUME_FUTEX_REQUEUE - cmpl $-EINVAL, %eax - je 7f -#endif - - /* If we moved a thread we in any case have to make the syscall. */ - testl %eax, %eax - jne 5f - /* Unlock. Note that at this point %edi always points to cond_lock. */ 4: LOCK @@ -101,7 +91,6 @@ __pthread_cond_signal: 6: xorl %eax, %eax popl %edi - popl %esi popl %ebx ret @@ -119,15 +108,6 @@ __pthread_cond_signal: 5: movl %edi, %eax call __lll_mutex_unlock_wake jmp 6b - -#ifndef __ASSUME_FUTEX_REQUEUE -7: /* The futex requeue functionality is not available. */ - movl $1, %edx - movl $FUTEX_WAKE, %ecx - movl $SYS_futex, %eax - ENTER_KERNEL - jmp 4b -#endif .size __pthread_cond_signal, .-__pthread_cond_signal versioned_symbol (libpthread, __pthread_cond_signal, pthread_cond_signal, GLIBC_2_3_2) |