diff options
author | Ulrich Drepper <drepper@redhat.com> | 2009-08-22 17:58:04 -0700 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2009-08-22 17:58:04 -0700 |
commit | cd16986ee3a4fa92c7e6b3f5a601a635a7cdd21a (patch) | |
tree | 2d7e0db615f72fa98a21fe806204e49e0a0c2a04 | |
parent | 15efafdf07789322219cc8f938ac758f932fe208 (diff) | |
download | glibc-cd16986ee3a4fa92c7e6b3f5a601a635a7cdd21a.tar.gz |
Rvert accidental checkins.
6 files changed, 11 insertions, 547 deletions
diff --git a/nptl/pthread_rwlock_init.c b/nptl/pthread_rwlock_init.c index 95d9da4005..27f25ac2ab 100644 --- a/nptl/pthread_rwlock_init.c +++ b/nptl/pthread_rwlock_init.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2007, 2009 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -37,7 +37,13 @@ __pthread_rwlock_init (rwlock, attr) iattr = ((const struct pthread_rwlockattr *) attr) ?: &default_attr; - memset (rwlock, '\0', sizeof (*rwlock)); + rwlock->__data.__lock = 0; + rwlock->__data.__nr_readers = 0; + rwlock->__data.__readers_wakeup = 0; + rwlock->__data.__writer_wakeup = 0; + rwlock->__data.__nr_readers_queued = 0; + rwlock->__data.__nr_writers_queued = 0; + rwlock->__data.__writer = 0; rwlock->__data.__flags = iattr->lockkind == PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP; @@ -68,6 +74,9 @@ __pthread_rwlock_init (rwlock, attr) header.private_futex)); #endif + rwlock->__data.__pad1 = 0; + rwlock->__data.__pad2 = 0; + return 0; } strong_alias (__pthread_rwlock_init, pthread_rwlock_init) diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S index 54a47e111f..35eb09cd0c 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S @@ -31,127 +31,6 @@ .align 16 __pthread_rwlock_rdlock: cfi_startproc - movq $NRW_RC, %rax - LOCK - xaddq %rax, NRW_WORD(%rdi) - js .Lundo - -.Lagain1: - movq $(NRW_WL|NRW_WP), %rcx - movq $(NRW_WL|NRW_WW_MASK), %rdx - testq %rax, %rcx - setnz %cl - testq %rax, %rdx - setnz %dl - orb %cl, %dl - jnz .Lwait - - xorl %eax, %eax - ret - -.Lwait: movq $NRW_WL, %rcx - testq %rcx, %rax - jz 4f - - movl %fs:TID, %ecx - cmpl %ecx, WRITER(%rdi) - je .Ldeadlk - -4: xorq %r8, %r8 - movq $NRW_RC, %rdx - addq %rdx, %rax - movq $(NRW_WL|NRW_AR), %rcx - movq $(NRW_WP|NRW_WW_MASK), %rdx - testq %rax, %rcx - setz %cl - testq %rax, %rdx - setnz %dl - testb %dl, %cl - jz 1f - - movq $NRW_RW-NRW_RC, %rdx - addq %rax, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain1 - - movq $NRW_RC_MASK, %rax - testq %rdx, %rax - movl $1, %r8d - jz .Lwake_waiter - -1: xorq %r10, %r10 - movl $NRW_R_WAKEUP, %r9d - movl $(FUTEX_WAIT_BITSET|FUTEX_PRIVATE_FLAG), %esi - xorl PSHARED(%rdi), %esi - leaq NRW_WORD+4(%rdi), %rdi -2: shldq $32, %rax, %rdx - movl $__NR_futex, %eax - syscall - movq -4(%rdi), %rax - -5: movq $(NRW_WL|NRW_WP), %rcx - movq $(NRW_WL|NRW_WW_MASK), %rdx - testq %rax, %rcx - setnz %cl - testq %rax, %rdx - setnz %dl - orb %cl, %dl - jnz 2b - - testl %r8d, %r8d - jz 3f - - movq $NRW_RC-NRW_RW, %rcx - addq %rcx, %rdx - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz 5b - -3: xorl %eax, %eax - ret - -.Lwake_waiter: - movq %rdx, %r10 - movl $__NR_futex, %eax - movl $(FUTEX_WAKE_BITSET|FUTEX_PRIVATE_FLAG), %esi - xorl PSHARED(%rdi), %esi - leaq NRW_WORD(%rdi), %rdi - movl $1, %edx - movl $NRW_W_WAKEUP, %r9d - syscall - leaq -NRW_WORD(%rdi), %rdi - movq %r10, %rdx - jmp 1b - -.Lundo: movq $-NRW_RC, %rcx - movq %rax, %rdx - subq %rcx, %rax - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jz .Lret - - movq $NRW_RC_OVFL, %r8 -.Lagain2: - testq %r8, %rax - jz .Lagain1 - leaq (%rax,%rcx), %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain2 - -.Lret: movl $EAGAIN, %eax - ret - -.Ldeadlk: - movq $NRW_RC, %rdx - LOCK - subq %rdx, NRW_WORD(%rdi) - - movl $EDEADLK, %eax - ret - -#if 0 xorq %r10, %r10 /* Get the lock. */ @@ -289,7 +168,6 @@ __pthread_rwlock_rdlock: subq $MUTEX, %rdi #endif jmp 13b -#endif cfi_endproc .size __pthread_rwlock_rdlock,.-__pthread_rwlock_rdlock diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S index 0fb925ceec..23b218af34 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S @@ -34,143 +34,6 @@ .align 16 pthread_rwlock_timedrdlock: cfi_startproc - movq %rsi, %r10 - movq $NRW_RC, %rax - LOCK - xaddq %rax, NRW_WORD(%rdi) - js .Lundo - -.Lagain1: - movq $(NRW_WL|NRW_WP), %rcx - movq $(NRW_WL|NRW_WW_MASK), %rdx - testq %rax, %rcx - setnz %cl - testq %rax, %rdx - setnz %dl - orb %cl, %dl - jnz .Lwait - - xorl %eax, %eax - ret - -.Lwait: movq $NRW_WL, %rcx - testq %rcx, %rax - jz 4f - - movl %fs:TID, %ecx - cmpl %ecx, WRITER(%rdi) - je .Ldeadlk - -4: xorq %r8, %r8 - movq $NRW_RC, %rdx - addq %rdx, %rax - movq $(NRW_WL|NRW_AR), %rcx - movq $(NRW_WP|NRW_WW_MASK), %rdx - testq %rax, %rcx - setz %cl - testq %rax, %rdx - setnz %dl - testb %dl, %cl - jz 1f - - movq $NRW_RW-NRW_RC, %rdx - addq %rax, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain1 - - movq $NRW_RC_MASK, %rax - testq %rdx, %rax - movq $NRW_RW-NRW_RC, %r8 - jz .Lwake_waiter - -1: movl $NRW_R_WAKEUP, %r9d - leaq NRW_WORD+4(%rdi), %rdi -2: movl $(FUTEX_WAIT_BITSET|FUTEX_PRIVATE_FLAG|FUTEX_CLOCK_REALTIME), %esi - xorl PSHARED-(NRW_WORD+4)(%rdi), %esi - shldq $32, %rax, %rdx - movl $__NR_futex, %eax - syscall - movl %eax, %esi - movq -4(%rdi), %rax - -6: movq $(NRW_WL|NRW_WP), %rcx - movq $(NRW_WL|NRW_WW_MASK), %rdx - testq %rax, %rcx - setnz %cl - testq %rax, %rdx - setnz %dl - orb %cl, %dl - jz 5f - - cmpl $-EWOULDBLOCK, %esi - je 2b - - movq $-NRW_RC, %rdx - subq %r8, %rdx - addq %rax, %rdx - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz 6b - - negl %esi - movl %esi, %eax - ret - -5: testl %r8d, %r8d - jz 3f - - movq $NRW_RC-NRW_RW, %rcx - addq %rcx, %rdx - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz 6b - -3: xorl %eax, %eax - ret - -.Lwake_waiter: - movq %rdx, %r10 - movl $__NR_futex, %eax - movl $(FUTEX_WAKE_BITSET|FUTEX_PRIVATE_FLAG), %esi - xorl PSHARED(%rdi), %esi - leaq NRW_WORD(%rdi), %rdi - movl $1, %edx - movl $NRW_W_WAKEUP, %r9d - syscall - leaq -NRW_WORD(%rdi), %rdi - movq %r10, %rdx - jmp 1b - -.Lundo: movq $-NRW_RC, %rcx - movq %rax, %rdx - subq %rcx, %rax - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jz .Lret - - movq $NRW_RC_OVFL, %r8 -.Lagain2: - testq %r8, %rax - jz .Lagain1 - leaq (%rax,%rcx), %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain2 - -.Lret: movl $EAGAIN, %eax - ret - -.Ldeadlk: - movq $NRW_RC, %rdx - LOCK - subq %rdx, NRW_WORD(%rdi) - - movl $EDEADLK, %eax - ret - - -#if 0 pushq %r12 cfi_adjust_cfa_offset(8) cfi_rel_offset(%r12, 0) @@ -408,6 +271,5 @@ pthread_rwlock_timedrdlock: 19: movl $EINVAL, %edx jmp 9b -#endif cfi_endproc .size pthread_rwlock_timedrdlock,.-pthread_rwlock_timedrdlock diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedwrlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedwrlock.S index 14d7637429..cd867b60dc 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedwrlock.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedwrlock.S @@ -34,109 +34,6 @@ .align 16 pthread_rwlock_timedwrlock: cfi_startproc - movq %rsi, %r10 - movq NRW_WORD(%rdi), %rax -.Lagain: - movq $(NRW_WW_MASK|NRW_WL|NRW_RC_MASK), %rdx - testq %rdx, %rax - jnz .Lwait - - // XXX Probably make AR a don't-care for !WP. Unconditionally set it - movq $(NRW_AR|NRW_WL), %rdx - movq $NRW_WL, %rcx - testq $NRW_WP, %rax - cmovz %rcx, %rdx - orq %rax, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain - - movl %fs:TID, %eax - movl %eax, WRITER(%rdi) - - xorl %eax, %eax - ret - -.Lwait: movq $NRW_WL, %rcx - testq %rcx, %rax - jz 1f - - movl %fs:TID, %eax - cmpl %eax, WRITER(%rdi) - je .Ldeadlk - -1: leaq NRW_WORD+4(%rdi), %rdi - - movq $NRW_WW, %rdx - movq $NRW_WW_MASK, %rcx - addq %rax, %rdx - testq %rcx, %rdx - jz .Lovfl - - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz .Lagain - - movl $NRW_W_WAKEUP, %r9d -.Lwait2: - movl $(FUTEX_WAIT_BITSET|FUTEX_PRIVATE_FLAG|FUTEX_CLOCK_REALTIME), %esi - movl $__NR_futex, %eax - xorl PSHARED-(NRW_WORD+4)(%rdi), %esi - syscall - movl %eax, %esi - movq -4(%rdi), %rax - -.Lagain2: - movq $(NRW_WL|NRW_RC_MASK), %rdx - movq $(NRW_WL|NRW_AR), %rcx - testq %rdx, %rax - movq $NRW_AR, %rsi - setz %cl - andq %rax, %rcx - cmpq %rsi, %rcx - sete %cl - orb %dl, %cl - jnz 2f - - cmpl $-EWOULDBLOCK, %esi - jne .Lwait2 - - movq $-NRW_WW, %rdx - addq %rax, %rdx - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz .Lagain2 - - negl %esi - movl %esi, %eax - ret - -2: movq $-NRW_WW, %rdx - addq %rax, %rdx - xorl %ecx, %ecx - testq $NRW_WP, %rax - cmovz %rcx, %rsi - orq %rsi, %rdx - - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz .Lagain2 - - movl %fs:TID, %eax - movl %eax, WRITER(%rdi) - - xorl %eax, %eax - ret - -.Lovfl: movl $EAGAIN, %eax - ret - -.Ldeadlk: - movl $EDEADLK, %eax - ret - - -#if 0 pushq %r12 cfi_adjust_cfa_offset(8) cfi_rel_offset(%r12, 0) @@ -366,6 +263,5 @@ pthread_rwlock_timedwrlock: 19: movl $EINVAL, %edx jmp 9b -#endif cfi_endproc .size pthread_rwlock_timedwrlock,.-pthread_rwlock_timedwrlock diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S index 1953637055..03391d0fc2 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S @@ -30,97 +30,6 @@ .align 16 __pthread_rwlock_unlock: cfi_startproc - movq NRW_WORD(%rdi), %rax - movq $NRW_WL, %rdx - testq %rdx, %rax - jnz .Lunlock_writer - -.Lagain: - movq $-NRW_RC, %rdx - addq %rax, %rdx - movq $NRW_RC_MASK, %rcx - testq %rcx, %rdx - jz .Llast_reader - -1: LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain - - xorl %eax, %eax - ret - -.Llast_reader: - movq $NRW_WW_MASK, %rcx - testq %rax, %rcx - jz 1b - - movq $NRW_AR, %rcx - xorl %esi, %esi - testq $NRW_WP, %rax - cmovz %esi, %ecx - orq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain - -.Lwake_writer: - movl $1, %edx - movl $NRW_W_WAKEUP, %r9d -.Lwake: movl $(FUTEX_WAKE_BITSET|FUTEX_PRIVATE_FLAG), %esi - xorl PSHARED(%rdi), %esi - leaq NRW_WORD(%rdi), %rdi - movl $__NR_futex, %eax - syscall - -.Lout: xorl %eax, %eax - ret - -.Lunlock_writer: - movq %rax, %rdx - movq $NRW_WW_MASK, %rcx - testq %rcx, %rax - jz .Lno_writers - movq $NRW_RC_MASK, %rcx - testq %rcx, %rax - jz 2f - testq $NRW_WP, %rax - jz .Lwake_readers - -2: movq $~NRW_WL, %rcx - andq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lunlock_writer - jmp .Lwake_writer - -.Lno_writers: - movq $~(NRW_WL|NRW_AR), %rcx - andq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lunlock_writer - - movq $(NRW_RW_MASK|NRW_RC_MASK), %rcx - testq %rcx, %rax - jz .Lout - - movl $0x7fffffff, %edx - movl $NRW_R_WAKEUP, %r9d - jmp .Lwake - -.Lwake_readers: - movq $~NRW_WL, %rcx - andq %rcx, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lunlock_writer - - movl $0x7fffffff, %edx - movl $NRW_R_WAKEUP, %r9d - jmp .Lwake - - -#if 0 /* Get the lock. */ movl $1, %esi xorl %eax, %eax @@ -211,7 +120,6 @@ __pthread_rwlock_unlock: #endif callq __lll_unlock_wake jmp 8b -#endif cfi_endproc .size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S index 63fc2dfd91..be6b8d8e20 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S @@ -31,94 +31,6 @@ .align 16 __pthread_rwlock_wrlock: cfi_startproc - movq NRW_WORD(%rdi), %rax -.Lagain: - movq $(NRW_WW_MASK|NRW_WL|NRW_RC_MASK), %rdx - testq %rdx, %rax - jnz .Lwait - - // XXX Probably make AR a don't-care for !WP. Unconditionally set it - movq $(NRW_AR|NRW_WL), %rdx - movq $NRW_WL, %rcx - testq $NRW_WP, %rax - cmovz %rcx, %rdx - orq %rax, %rdx - LOCK - cmpxchgq %rdx, NRW_WORD(%rdi) - jnz .Lagain - - movl %fs:TID, %eax - movl %eax, WRITER(%rdi) - - xorl %eax, %eax - ret - -.Lwait: movq $NRW_WL, %rcx - testq %rcx, %rax - jz 1f - - movl %fs:TID, %eax - cmpl %eax, WRITER(%rdi) - je .Ldeadlk - -1: leaq NRW_WORD+4(%rdi), %rdi - - movq $NRW_WW, %rdx - movq $NRW_WW_MASK, %rcx - addq %rax, %rdx - testq %rcx, %rdx - jz .Lovfl - - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz .Lagain - - xorq %r10, %r10 - movl $NRW_W_WAKEUP, %r9d -.Lwait2: - movl $(FUTEX_WAIT_BITSET|FUTEX_PRIVATE_FLAG), %esi - movl $__NR_futex, %eax - xorl PSHARED-(NRW_WORD+4)(%rdi), %esi - syscall - movq -4(%rdi), %rax - -.Lagain2: - movq $(NRW_WL|NRW_RC_MASK), %rdx - movq $(NRW_WL|NRW_AR), %rcx - testq %rdx, %rax - movq $NRW_AR, %rsi - setz %cl - andq %rax, %rcx - cmpq %rsi, %rcx - sete %cl - orb %dl, %cl - jz .Lwait2 - - movq $-NRW_WW, %rdx - addq %rax, %rdx - xorl %ecx, %ecx - testq $NRW_WP, %rax - cmovz %rcx, %rsi - orq %rsi, %rdx - - LOCK - cmpxchgq %rdx, -4(%rdi) - jnz .Lagain2 - - movl %fs:TID, %eax - movl %eax, WRITER(%rdi) - - xorl %eax, %eax - ret - -.Lovfl: movl $EAGAIN, %eax - ret - -.Ldeadlk: - movl $EDEADLK, %eax - ret - -#if 0 xorq %r10, %r10 /* Get the lock. */ @@ -244,7 +156,6 @@ __pthread_rwlock_wrlock: subq $MUTEX, %rdi #endif jmp 13b -#endif cfi_endproc .size __pthread_rwlock_wrlock,.-__pthread_rwlock_wrlock |