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| author | Ulrich Drepper <drepper@redhat.com> | 2004-06-03 16:04:11 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2004-06-03 16:04:11 +0000 |
| commit | 75fcceded2cfc65e4879521fff4db6a620a96363 (patch) | |
| tree | 6d0763c5a2e4b59ece4d57a87232d435d15a5f7f /nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S | |
| parent | 322861e8b62dbca030a66f9ab37e6688b223c65f (diff) | |
| download | glibc-75fcceded2cfc65e4879521fff4db6a620a96363.tar.gz glibc-75fcceded2cfc65e4879521fff4db6a620a96363.tar.xz glibc-75fcceded2cfc65e4879521fff4db6a620a96363.zip | |
Update.
2004-06-03 Ulrich Drepper <drepper@redhat.com> * sysdeps/i386/i486/bits/atomic.h: Optimize a bit.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S index 74e3172ab0..3fe7f8c17a 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S @@ -79,6 +79,7 @@ __pthread_cond_wait: addl $1, total_seq(%ebx) adcl $0, total_seq+4(%ebx) + addl $1, cond_futex(%ebx) #define FRAME_SIZE 16 subl $FRAME_SIZE, %esp @@ -92,8 +93,10 @@ __pthread_cond_wait: movl %edx, 8(%esp) movl %eax, 12(%esp) +8: movl cond_futex(%ebx), %edi + /* Unlock. */ -8: LOCK + LOCK #if cond_lock == 0 subl $1, (%ebx) #else @@ -107,12 +110,12 @@ __pthread_cond_wait: movl %esi, %ecx /* movl $FUTEX_WAIT, %ecx */ movl %edi, %edx - addl $wakeup_seq, %ebx -.Ladd_wakeup: + addl $cond_futex, %ebx +.Ladd_cond_futex: movl $SYS_futex, %eax ENTER_KERNEL - subl $wakeup_seq, %ebx -.Lsub_wakeup: + subl $cond_futex, %ebx +.Lsub_cond_futex: movl (%esp), %eax call __pthread_disable_asynccancel @@ -246,7 +249,7 @@ versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait, .type __condvar_w_cleanup2, @function __condvar_w_cleanup2: - subl $wakeup_seq, %ebx + subl $cond_futex, %ebx .size __condvar_w_cleanup2, .-__condvar_w_cleanup2 .LSbl4: .type __condvar_w_cleanup, @function @@ -278,6 +281,8 @@ __condvar_w_cleanup: addl $1, wakeup_seq(%ebx) adcl $0, wakeup_seq+4(%ebx) + addl $1, cond_futex(%ebx) + addl $1, woken_seq(%ebx) adcl $0, woken_seq+4(%ebx) @@ -297,7 +302,7 @@ __condvar_w_cleanup: call __lll_mutex_unlock_wake /* Wake up all waiters to make sure no signal gets lost. */ -2: addl $wakeup_seq, %ebx +2: addl $cond_futex, %ebx movl $FUTEX_WAKE, %ecx movl $SYS_futex, %eax movl $0x7fffffff, %edx @@ -323,15 +328,15 @@ __condvar_w_cleanup: .uleb128 .Lcstend-.Lcstbegin .Lcstbegin: .long .LcleanupSTART-.LSTARTCODE - .long .Ladd_wakeup-.LcleanupSTART + .long .Ladd_cond_futex-.LcleanupSTART .long __condvar_w_cleanup-.LSTARTCODE .uleb128 0 - .long .Ladd_wakeup-.LSTARTCODE - .long .Lsub_wakeup-.Ladd_wakeup + .long .Ladd_cond_futex-.LSTARTCODE + .long .Lsub_cond_futex-.Ladd_cond_futex .long __condvar_w_cleanup2-.LSTARTCODE .uleb128 0 - .long .Lsub_wakeup-.LSTARTCODE - .long .LcleanupEND-.Lsub_wakeup + .long .Lsub_cond_futex-.LSTARTCODE + .long .LcleanupEND-.Lsub_cond_futex .long __condvar_w_cleanup-.LSTARTCODE .uleb128 0 .long .LcallUR-.LSTARTCODE |