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/*
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <stdio.h>
#include <stdlib.h>
#ifdef _WIN32
#include <windows.h>
#else
#include <unistd.h>
#endif
/**
* Command line program to sleep at least given number of seconds.
* The behavior should equivalent to the Unix sleep command.
* Actual time sleeping may vary if interrupted, the remaining time
* returned from sleep has limited accuracy.
*
* Note: the file name prefix "exe" identifies the source should be built into BasicSleep(.exe).
*/
int main(int argc, char** argv) {
int seconds;
if (argc < 2 || (seconds = atoi(argv[1])) < 0) {
fprintf(stderr, "usage: BasicSleep <non-negative seconds>\n");
exit(1);
}
#ifdef _WIN32
Sleep(seconds * 1000);
#else
while ((seconds = sleep(seconds)) > 0) {
// until no more to sleep
}
#endif
}
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