Update.
2003-03-12 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S (__pthread_rwlock_timedwrlock): Add missing opcode suffix. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S (__pthread_rwlock_timedrdlock): Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S (__pthread_rwlock_wrlock): Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S (__pthread_rwlock_rdlock): Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: New file. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Return result of lock re-get if it fails.
This commit is contained in:
Ulrich Drepper
parent
a3cd7da30f
commit
35e148cb96
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@ -1,3 +1,19 @@
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2003-03-12 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S
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(__pthread_rwlock_timedwrlock): Add missing opcode suffix.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S
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(__pthread_rwlock_timedrdlock): Likewise.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S
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(__pthread_rwlock_wrlock): Likewise.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S
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(__pthread_rwlock_rdlock): Likewise.
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* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: New file.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Return
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result of lock re-get if it fails.
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2003-03-11 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Fix asm syntax.
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@ -61,7 +61,7 @@ __pthread_rwlock_rdlock:
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2: movl WRITER(%ebx), %eax
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testl %eax, %eax
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jne 14f
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cmp $0, WRITERS_QUEUED(%ebx)
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cmpl $0, WRITERS_QUEUED(%ebx)
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je 5f
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cmpl $0, FLAGS(%ebx)
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je 5f
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@ -67,7 +67,7 @@ pthread_rwlock_timedrdlock:
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2: movl WRITER(%ebp), %eax
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testl %eax, %eax
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jne 14f
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cmp $0, WRITERS_QUEUED(%ebp)
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cmpl $0, WRITERS_QUEUED(%ebp)
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je 5f
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cmpl $0, FLAGS(%ebp)
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je 5f
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@ -67,7 +67,7 @@ pthread_rwlock_timedwrlock:
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2: movl WRITER(%ebp), %eax
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testl %eax, %eax
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jne 14f
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cmp $0, NR_READERS(%ebp)
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cmpl $0, NR_READERS(%ebp)
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je 5f
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/* Check the value of the timeout parameter. */
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@ -61,7 +61,7 @@ __pthread_rwlock_wrlock:
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2: movl WRITER(%ebx), %eax
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testl %eax, %eax
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jne 14f
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cmp $0, NR_READERS(%ebx)
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cmpl $0, NR_READERS(%ebx)
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je 5f
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3: addl $1, WRITERS_QUEUED(%ebx)
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253
nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
Normal file
253
nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
Normal file
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@ -0,0 +1,253 @@
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/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <shlib-compat.h>
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#include <lowlevelcond.h>
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#ifdef UP
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# define LOCK
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#else
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# define LOCK lock
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#endif
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#define SYS_gettimeofday __NR_gettimeofday
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#define SYS_futex 202
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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#define ETIMEDOUT 110
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.text
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/* int pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex,
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const struct timespec *abstime) */
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.globl __pthread_cond_timedwait
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.type __pthread_cond_timedwait, @function
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.align 16
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__pthread_cond_timedwait:
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pushq %r12
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pushq %r13
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pushq %r14
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subq $80, %rsp
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/* Prepare structure passed to cancellation handler. */
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movq %rdi, 8(%rsp)
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movq %rsi, 16(%rsp)
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movq %rdx, %r13
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/* Get internal lock. */
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movl $1, %esi
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LOCK
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#if cond_lock == 0
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xaddl %esi, (%rdi)
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#else
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xaddl %esi, cond_lock(%rdi)
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#endif
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testl %esi, %esi
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jne 1f
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/* Unlock the mutex. */
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2: movq 16(%rsp), %rdi
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callq __pthread_mutex_unlock_internal
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testl %eax, %eax
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jne 16f
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movq 8(%rsp), %rdi
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addq $1, total_seq(%rdi)
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/* Install cancellation handler. */
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#ifdef PIC
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leaq __condvar_cleanup(%rip), %rsi
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#else
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leaq __condvar_cleanup, %rsi
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#endif
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leaq 48(%rsp), %rdi
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movq %rsp, %rdx
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callq __pthread_cleanup_push
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/* Get and store current wakeup_seq value. */
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movq 8(%rsp), %rdi
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movq wakeup_seq(%rdi), %r12
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movq %r12, 40(%rsp)
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/* Unlock. */
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8: LOCK
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#if cond_lock == 0
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decl (%rdi)
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#else
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decl cond_lock(%rdi)
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#endif
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jne 3f
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4: movq %rsp, %rdi
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call __pthread_enable_asynccancel_2
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/* Get the current time. */
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leaq 24(%rsp), %rdi
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xorq %rcx, %rcx
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movq $SYS_gettimeofday, %rax
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syscall
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/* Compute relative timeout. */
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movq 32(%rsp), %rax
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movq $1000, %rdx
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mul %rdx /* Milli seconds to nano seconds. */
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movq (%r13), %rcx
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movq 4(%r13), %rdx
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subq 24(%rsp), %rcx
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subq %rax, %rdx
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jns 12f
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addq $1000000000, %rdx
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decq %rcx
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12: testq %rcx, %rcx
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js 13f
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/* Store relative timeout. */
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movq %rcx, 24(%rsp)
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movq %rdx, 32(%rsp)
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movq 8(%rsp), %rdi
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leaq 24(%rsp), %r10
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xorq %rsi, %rsi /* movq $FUTEX_WAIT, %rsi */
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movq %r12, %rdx
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addq $wakeup_seq-cond_lock, %rdi
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movq $SYS_futex, %rax
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syscall
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movq %rax, %r14
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movq (%rsp), %rdi
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callq __pthread_disable_asynccancel
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/* Lock. */
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movq 8(%rsp), %rdi
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movl $1, %esi
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LOCK
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#if cond_lock == 0
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xaddl %esi, (%rdi)
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#else
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xaddl %esi, cond_lock(%rdi)
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#endif
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testl %esi, %esi
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jne 5f
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6: movq woken_seq(%rdi), %rax
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movq wakeup_seq(%rdi), %r12
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cmpq 40(%rsp), %rax
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jb 15f
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cmpq %rax, %r12
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ja 9f
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15: cmpq $-ETIMEDOUT, %r14
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jne 8b
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13: incq wakeup_seq(%rdi)
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movq $ETIMEDOUT, %rsi
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jmp 14f
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9: xorq %rsi, %rsi
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14: incq woken_seq(%rdi)
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LOCK
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#if cond_lock == 0
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decl (%rdi)
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#else
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decl cond_lock(%rdi)
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#endif
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jne 10f
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/* Remove cancellation handler. */
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11: movq 48+CLEANUP_PREV(%rsp), %rdx
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movq %rdx, %fs:CLEANUP
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movq 16(%rsp), %rdi
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callq __pthread_mutex_lock_internal
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testq %rax, %rax
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cmoveq %rsi, %rax
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18: addq $80, %rsp
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popq %r14
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popq %r13
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popq %r12
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retq
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/* Initial locking failed. */
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1:
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#if cond_lock != 0
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addq $cond_lock, %rdi
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#endif
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call __lll_mutex_lock_wait
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jmp 2b
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/* Unlock in loop requires waekup. */
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3:
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#if cond_lock != 0
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addq $cond_lock, %rdi
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#endif
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call __lll_mutex_unlock_wake
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jmp 4b
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/* Locking in loop failed. */
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5:
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#if cond_lock != 0
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addq $cond_lock, %rdi
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#endif
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call __lll_mutex_lock_wait
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#if cond_lock != 0
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subq $cond_lock, %rdi
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#endif
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jmp 6b
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/* Unlock after loop requires waekup. */
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10:
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#if cond_lock != 0
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addq $cond_lock, %rdi
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#endif
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call __lll_mutex_unlock_wake
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jmp 11b
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/* The initial unlocking of the mutex failed. */
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16: movq 8(%rsp), %rdi
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movq %rax, (%rsp)
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LOCK
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#if cond_lock == 0
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decl (%rdi)
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#else
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decl cond_lock(%rdi)
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#endif
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jne 17f
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#if cond_lock != 0
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addq $cond_lock, %rdi
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#endif
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call __lll_mutex_unlock_wake
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17: movq (%rsp), %rax
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jmp 18b
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.size __pthread_cond_wait, .-__pthread_cond_wait
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.size __pthread_cond_timedwait, .-__pthread_cond_timedwait
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versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
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GLIBC_2_3_2)
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@ -126,7 +126,7 @@ __pthread_cond_wait:
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testl %eax, %eax
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jne 12f
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movq (%rsp), %rdi
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movq 8(%rsp), %rdi
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addq $1, total_seq(%rdi)
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/* Install cancellation handler. */
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@ -163,7 +163,6 @@ __pthread_cond_wait:
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movq $SYS_futex, %rax
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movq %r10, %rsi /* movl $FUTEX_WAIT, %ecx */
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syscall
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subl $wakeup_seq-cond_lock, %ebx
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movq (%rsp), %rdi
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callq __pthread_disable_asynccancel
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@ -202,7 +201,7 @@ __pthread_cond_wait:
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/* Remove cancellation handler. */
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11: movq 32+CLEANUP_PREV(%rsp), %rdx
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movq %rdx, %gs:CLEANUP
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movq %rdx, %fs:CLEANUP
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movq 16(%rsp), %rdi
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callq __pthread_mutex_lock_internal
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@ -227,9 +226,6 @@ __pthread_cond_wait:
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addq $cond_lock, %rdi
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#endif
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callq __lll_mutex_unlock_wake
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#if cond_lock != 0
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subq $cond_lock, %rdi
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#endif
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jmp 4b
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/* Locking in loop failed. */
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