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2003-05-26  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Fix
	typo in register name.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Use parameters
	correctly.  Actually use requeue.  Little optimization.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Store
	mutex address early.  Handle cancellation state as 32-bit value.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
	Remove unnecessary label.
This commit is contained in:
Ulrich Drepper 2003-05-27 04:24:31 +00:00
parent 91ceedb37f
commit 7661d9f783
4 changed files with 34 additions and 17 deletions
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11
nptl/ChangeLog
View File

@ -1,3 +1,14 @@
2003-05-26 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Fix
typo in register name.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Use parameters
correctly. Actually use requeue. Little optimization.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Store
mutex address early. Handle cancellation state as 32-bit value.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
Remove unnecessary label.
2003-05-25 Ulrich Drepper <drepper@redhat.com>
* sysdeps/pthread/pthread_cond_broadcast.c: Try using FUTEX_REQUEUE

18
nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
View File

@ -45,17 +45,18 @@
__pthread_cond_signal:
/* Get internal lock. */
movq %rdi, %r8
movl $1, %esi
LOCK
#if cond_lock == 0
xaddl %esi, (%r8)
xaddl %esi, (%rdi)
#else
xaddl %esi, cond_lock(%r8)
xaddl %esi, cond_lock(%rdi)
#endif
testl %esi, %esi
jne 1f
2: leaq wakeup_seq(%r8), %rdi
2: addq $wakeup_seq, %rdi
movq total_seq(%r8), %rcx
cmpq (%rdi), %rcx
jbe 4f
@ -64,7 +65,7 @@ __pthread_cond_signal:
addq $1, (%rdi)
/* Wake up one thread. */
movq $FUTEX_WAKE, %rsi
movq $FUTEX_REQUEUE, %rsi
movq $SYS_futex, %rax
xorq %rdx, %rdx
movq $1, %r10
@ -81,7 +82,11 @@ __pthread_cond_signal:
/* Unlock. */
4: LOCK
#if cond_lock == 0
decl (%r8)
#else
decl cond_lock(%r8)
#endif
jne 5f
6: xorl %eax, %eax
@ -98,7 +103,7 @@ __pthread_cond_signal:
#endif
jmp 2b
/* Unlock in loop requires waekup. */
/* Unlock in loop requires wakeup. */
5:
#if cond_lock != 0
addq $cond_lock-wakeup_seq, %rdi
@ -111,10 +116,11 @@ __pthread_cond_signal:
#ifndef __ASSUME_FUTEX_REQUEUE
7: /* The futex requeue functionality is not available. */
movq $1, %rdx
movq $FUTEX_WAKE, %esi
movq $FUTEX_WAKE, %rsi
movq $SYS_futex, %rax
syscall
jmp 4b
#endif
.size __pthread_cond_signal, .-__pthread_cond_signal
versioned_symbol (libpthread, __pthread_cond_signal, pthread_cond_signal,
GLIBC_2_3_2)

10
nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
View File

@ -76,6 +76,8 @@ __pthread_cond_timedwait:
movq %rsi, 16(%rsp)
movq %rdx, %r13
movq %rsi, dep_mutex(%rdi)
/* Get internal lock. */
movl $1, %esi
LOCK
@ -88,9 +90,7 @@ __pthread_cond_timedwait:
jne 1f
/* Unlock the mutex. */
2: movq %rdi, %rax
movq 16(%rsp), %rdi
movq %rdi, dep_mutex(%rax)
2: movq 16(%rsp), %rdi
callq __pthread_mutex_unlock_internal
testl %eax, %eax
@ -124,7 +124,7 @@ __pthread_cond_timedwait:
jne 3f
4: callq __pthread_enable_asynccancel
movq %rax, (%rsp)
movl %eax, (%rsp)
/* Get the current time. */
#ifdef __NR_clock_gettime
@ -181,7 +181,7 @@ __pthread_cond_timedwait:
syscall
movq %rax, %r14
movq (%rsp), %rdi
movl (%rsp), %edi
callq __pthread_disable_asynccancel
/* Lock. */

12
nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
View File

@ -87,7 +87,7 @@ __condvar_cleanup:
movq 16(%r8), %rdi
callq __pthread_mutex_cond_lock
3: retq
retq
.size __condvar_cleanup, .-__condvar_cleanup
@ -121,6 +121,8 @@ __pthread_cond_wait:
movq %rdi, 8(%rsp)
movq %rsi, 16(%rsp)
movq %rsi, dep_mutex(%rdi)
/* Get internal lock. */
movl $1, %esi
LOCK
@ -133,9 +135,7 @@ __pthread_cond_wait:
jne 1f
/* Unlock the mutex. */
2: movq %rdi, %rax
movq 16(%rsp), %rdi
movq %rdi, dep_mutex(%rax)
2: movq 16(%rsp), %rdi
callq __pthread_mutex_unlock_internal
testl %eax, %eax
@ -169,7 +169,7 @@ __pthread_cond_wait:
jne 3f
4: callq __pthread_enable_asynccancel
movq %rax, (%rsp)
movl %eax, (%rsp)
movq 8(%rsp), %rdi
xorq %r10, %r10
@ -179,7 +179,7 @@ __pthread_cond_wait:
movq %r10, %rsi /* movq $FUTEX_WAIT, %rsi */
syscall
movq (%rsp), %rdi
movl (%rsp), %edi
callq __pthread_disable_asynccancel
/* Lock. */