qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

* sysdeps/unix/sysv/linux/x86_64/sem_trywait.S (sem_trywait): Tiny 

optimization.
This commit is contained in:
Ulrich Drepper 2007-05-26 21:47:28 +00:00
parent 6df7ffad19
commit a2dd3360db
2 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
nptl/ChangeLog
View File

@ -1,5 +1,8 @@
2007-05-26 Ulrich Drepper <drepper@redhat.com> 2007-05-26 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/sem_trywait.S (sem_trywait): Tiny
optimization.
* sysdeps/unix/sysv/linux/sem_wait.c: Add missing break. * sysdeps/unix/sysv/linux/sem_wait.c: Add missing break.
* sysdeps/unix/sysv/linux/sem_timedwait.c: Removed left-over * sysdeps/unix/sysv/linux/sem_timedwait.c: Removed left-over
duplication of __sem_wait_cleanup. duplication of __sem_wait_cleanup.

4
nptl/sysdeps/unix/sysv/linux/x86_64/sem_trywait.S
View File

@ -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. This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -37,7 +37,7 @@ sem_trywait:
2: testl %eax, %eax 2: testl %eax, %eax
jz 1f jz 1f
leaq -1(%rax), %rdx leal -1(%rax), %edx
LOCK LOCK
cmpxchgl %edx, (%rdi) cmpxchgl %edx, (%rdi)
jne 2b jne 2b