/*
* 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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