AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-23 13:30:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update.

Browse Source 
1999-10-14  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/sleep.c (__sleep): Optimize for zero
	seconds.
This commit is contained in:
Ulrich Drepper 1999-10-14 19:21:07 +00:00
parent 02ab9fe3d0
commit 907ea199d0
2 changed files with 14 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
ChangeLog
View File

@ -1,3 +1,8 @@
1999-10-14 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/sleep.c (__sleep): Optimize for zero
seconds.
1999-10-12 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/sys/ucontext.h: Don't define

11
sysdeps/unix/sysv/linux/sleep.c
View File

@ -1,5 +1,5 @@
/* Implementation of the POSIX sleep function using nanosleep.
Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@ -31,9 +31,12 @@ __sleep (unsigned int seconds)
{
struct timespec ts = { tv_sec: (long int) seconds, tv_nsec: 0 };
sigset_t set, oset;
struct sigaction oact;
unsigned int result;
/* This is not necessary but some buggy programs depend on this. */
if (seconds == 0)
return 0;
/* Linux will wake up the system call, nanosleep, when SIGCHLD
arrives even if SIGCHLD is ignored. We have to deal with it
in libc. We block SIGCHLD first. */
@ -46,6 +49,10 @@ __sleep (unsigned int seconds)
if (!__sigismember (&oset, SIGCHLD))
{
int saved_errno;
struct sigaction oact;
if (__sigemptyset (&set) < 0 || __sigaddset (&set, SIGCHLD) < 0)
return -1;
/* We get the signal handler for SIGCHLD. */
if (__sigaction (SIGCHLD, (struct sigaction *) NULL, &oact) < 0)