diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2007-05-26 01:31:40 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-05-26 01:31:40 +0000 |
| commit | 3d2dd6ca71fa9933e3413625d606f4b486661409 (patch) | |
| tree | 50d0226ef087227746ee01737977810d8120951a /nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S | |
| parent | 2af4e3e5668f70976762282cfff715e68929aa81 (diff) | |
* semaphoreP.h: Declare __old_sem_init and __old_sem_wait.
* sem_init.c (__new_sem_init): Rewrite to initialize all three
fields in the structure.
(__old_sem_init): New function.
* sem_open.c: Initialize all fields of the structure.
* sem_getvalue.c: Adjust for renamed element.
* sysdeps/unix/sysv/linux/Makefile [subdir=nptl]
(gen-as-const-headers): Add structsem.sym.
* sysdeps/unix/sysv/linux/structsem.sym: New file.
* sysdeps/unix/sysv/linux/internaltypes.h: Rename struct sem to
struct new_sem. Add struct old_sem.
* sysdeps/unix/sysv/linux/sem_post.c: Wake only when there are waiters.
* sysdeps/unix/sysv/linux/i386/i486/sem_post.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise.
* sysdeps/unix/sysv/linux/sem_wait.c: Indicate that there are waiters.
* sysdeps/unix/sysv/linux/i386/i486/sem_wait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Likewise.
* sysdeps/unix/sysv/linux/sem_timedwait.c: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise.
* Makefile (tests): Add tst-sem10, tst-sem11, tst-sem12.
* tst-sem10.c: New file.
* tst-sem11.c: New file.
* tst-sem12.c: New file.
* tst-typesizes.c: Test struct new_sem and struct old_sem instead
of struct sem.
2007-05-25 Ulrich Drepper <drepper@redhat.com>
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S index 7f608a5974..1f5d0bba34 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -20,6 +20,7 @@ #include <sysdep.h> #include <shlib-compat.h> #include <pthread-errnos.h> +#include <structsem.h> #ifndef UP # define LOCK lock @@ -37,19 +38,25 @@ .type sem_post,@function .align 16 sem_post: - movl $1, %edx LOCK - xaddl %edx, (%rdi) +#if VALUE == 0 + addl $1, (%rdi) +#else + addl $1, VALUE(%rdi) +#endif + + cmpq $0, NWAITERS(%rdi) + je 2f movl $SYS_futex, %eax movl $FUTEX_WAKE, %esi - incl %edx + movl $1, %edx syscall testq %rax, %rax js 1f - xorl %eax, %eax +2: xorl %eax, %eax retq 1: |