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| 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/i386/i486/sem_post.S | |
| parent | 2af4e3e5668f70976762282cfff715e68929aa81 (diff) | |
| download | glibc-3d2dd6ca71fa9933e3413625d606f4b486661409.tar.gz glibc-3d2dd6ca71fa9933e3413625d606f4b486661409.tar.xz glibc-3d2dd6ca71fa9933e3413625d606f4b486661409.zip | |
* 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/i386/i486/sem_post.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S index 71e96d2228..e66db146ec 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/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 @@ -40,19 +41,26 @@ __new_sem_post: pushl %ebx movl 8(%esp), %ebx - movl $1, %edx + LOCK - xaddl %edx, (%ebx) +#if VALUE == 0 + addl $1, (%ebx) +#else + addl $1, VALUE(%ebx) +#endif + + cmpl $0, NWAITERS(%ebx) + je 2f movl $SYS_futex, %eax movl $FUTEX_WAKE, %ecx - addl $1, %edx + movl $1, %edx ENTER_KERNEL testl %eax, %eax js 1f - xorl %eax, %eax +2: xorl %eax, %eax popl %ebx ret |