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glibc  2.9
sleep.c
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00001 /* Copyright (C) 1991, 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <signal.h>
00020 #include <time.h>
00021 #include <unistd.h>
00022 #include <errno.h>
00023 
00024 /* Make the process sleep for SECONDS seconds, or until a signal arrives
00025    and is not ignored.  The function returns the number of seconds less
00026    than SECONDS which it actually slept (zero if it slept the full time).
00027    If a signal handler does a `longjmp' or modifies the handling of the
00028    SIGALRM signal while inside `sleep' call, the handling of the SIGALRM
00029    signal afterwards is undefined.  There is no return value to indicate
00030    error, but if `sleep' returns SECONDS, it probably didn't work.  */
00031 unsigned int
00032 __sleep (seconds)
00033      unsigned int seconds;
00034 {
00035   __set_errno (ENOSYS);
00036   return seconds;
00037 }
00038 weak_alias (__sleep, sleep)
00039 
00040 stub_warning (sleep)
00041 #include <stub-tag.h>