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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/x86_64/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/x86_64/pthread_cond_wait.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S index 065eb11813..9e7da301d3 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -69,6 +69,8 @@ __condvar_cleanup: incq woken_seq(%rdi) + incl cond_futex(%rdi) + 3: LOCK #if cond_lock == 0 decl (%rdi) @@ -82,7 +84,7 @@ __condvar_cleanup: callq __lll_mutex_unlock_wake /* Wake up all waiters to make sure no signal gets lost. */ -2: addq $wakeup_seq, %rdi +2: addq $cond_futex, %rdi movq $FUTEX_WAKE, %rsi movl $0x7fffffff, %edx movq $SYS_futex, %rax @@ -154,6 +156,7 @@ __pthread_cond_wait: movq 8(%rsp), %rdi incq total_seq(%rdi) + incl cond_futex(%rdi) /* Install cancellation handler. */ #ifdef PIC @@ -167,13 +170,14 @@ __pthread_cond_wait: /* Get and store current wakeup_seq value. */ movq 8(%rsp), %rdi - movq wakeup_seq(%rdi), %r12 + movq wakeup_seq(%rdi), %r9 movl broadcast_seq(%rdi), %edx - movq %r12, 24(%rsp) + movq %r9, 24(%rsp) movl %edx, 4(%rsp) /* Unlock. */ -8: LOCK +8: movl cond_futex(%rdi), %r12d + LOCK #if cond_lock == 0 decl (%rdi) #else @@ -187,7 +191,7 @@ __pthread_cond_wait: movq 8(%rsp), %rdi xorq %r10, %r10 movq %r12, %rdx - addq $wakeup_seq-cond_lock, %rdi + addq $cond_futex-cond_lock, %rdi movq $SYS_futex, %rax movq %r10, %rsi /* movq $FUTEX_WAIT, %rsi */ syscall @@ -211,15 +215,15 @@ __pthread_cond_wait: movq woken_seq(%rdi), %rax - movq wakeup_seq(%rdi), %r12 + movq wakeup_seq(%rdi), %r9 cmpl 4(%rsp), %edx jne 16f - cmpq 24(%rsp), %r12 + cmpq 24(%rsp), %r9 jbe 8b - cmpq %rax, %r12 + cmpq %rax, %r9 jna 8b incq woken_seq(%rdi) @@ -359,8 +363,8 @@ versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait, .byte 0x40+.Lsubq-.Lpush_r12 # DW_CFA_advance_loc+N .byte 14 # DW_CFA_def_cfa_offset .uleb128 16+FRAME_SIZE - .byte 2 # DW_CFA_advance_loc1 - .byte .Laddq-.Lsubq + .byte 3 # DW_CFA_advance_loc2 + .2byte .Laddq-.Lsubq .byte 14 # DW_CFA_def_cfa_offset .uleb128 16 .byte 0x40+.Lpop_r12-.Laddq # DW_CFA_advance_loc+N |