Mercurial > gnulib
view lib/sleep.c @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 19 Mar 2013 09:08:47 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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/* Pausing execution of the current thread. Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 2007. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> /* Specification. */ #include <unistd.h> #include <limits.h> #include "verify.h" #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ # define WIN32_LEAN_AND_MEAN /* avoid including junk */ # include <windows.h> unsigned int sleep (unsigned int seconds) { unsigned int remaining; /* Sleep for 1 second many times, because 1. Sleep is not interruptible by Ctrl-C, 2. we want to avoid arithmetic overflow while multiplying with 1000. */ for (remaining = seconds; remaining > 0; remaining--) Sleep (1000); return remaining; } #elif HAVE_SLEEP # undef sleep /* Guarantee unlimited sleep and a reasonable return value. Cygwin 1.5.x rejects attempts to sleep more than 49.7 days (2**32 milliseconds), but uses uninitialized memory which results in a garbage answer. Similarly, Linux 2.6.9 with glibc 2.3.4 has a too small return value when asked to sleep more than 24.85 days. */ unsigned int rpl_sleep (unsigned int seconds) { /* This requires int larger than 16 bits. */ verify (UINT_MAX / 24 / 24 / 60 / 60); const unsigned int limit = 24 * 24 * 60 * 60; while (limit < seconds) { unsigned int result; seconds -= limit; result = sleep (limit); if (result) return seconds + result; } return sleep (seconds); } #else /* !HAVE_SLEEP */ #error "Please port gnulib sleep.c to your platform, possibly using usleep() or select(), then report this to bug-gnulib." #endif