Mercurial > hg-old > index.cgi
diff lib/sleep.c @ 421:3c2e1f24cc7d 3.0-beta2
Added generated files for release
author | lost@l-w.ca |
---|---|
date | Sun, 19 Sep 2010 01:33:24 -0600 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lib/sleep.c Sun Sep 19 01:33:24 2010 -0600 @@ -0,0 +1,75 @@ +/* Pausing execution of the current thread. + Copyright (C) 2007, 2009, 2010 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 interruptiple 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. */ +unsigned int +rpl_sleep (unsigned int seconds) +{ + /* This requires int larger than 16 bits. */ + verify (UINT_MAX / 49 / 24 / 60 / 60); + const unsigned int limit = 49 * 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