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/*
*
* Copyright (c) International Business Machines Corp., 2001
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* NAME
* fork03.c
*
* DESCRIPTION
* Check that child can use a large text space and do a large
* number of operations.
*
* ALGORITHM
* Fork one process, check for pid == 0 in child.
* Check for pid > 0 in parent after wait.
*
* USAGE
* fork03
*
* HISTORY
* 07/2001 Ported by Wayne Boyer
*
* RESTRICTIONS
* None
*/
#include <stdio.h>
#include "test.h"
#include "usctest.h"
void setup(void);
void cleanup(void);
char *TCID = "fork03";
int TST_TOTAL = 1;
extern int Tst_count;
void setup(void);
void cleanup(void);
main(int ac, char **av)
{
float fl1, fl2;
int i;
int pid1, pid2, status;
int lc; /* loop counter */
const char *msg; /* message returned from parse_opts */
/*
* parse standard options
*/
if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){
tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
/*NOTREACHED*/
}
/*
* perform global setup for the test
*/
setup();
/*
* check looping state if -i option is given
*/
for (lc = 0; TEST_LOOPING(lc); lc++) {
/*
* reset Tst_count in case we are looping.
*/
Tst_count = 0;
if ((pid1 = fork()) == -1) {
tst_brkm(TBROK, cleanup, "fork() failed");
}
if (pid1 == 0) { /* child */
/* child uses some cpu cycles */
for (i = 1; i < 32767; i++) {
fl1 = 0.000001;
fl1 = fl2 = 0.000001;
fl1 = fl1 * 10.0;
fl2 = fl1 / 1.232323;
fl1 = fl2 - fl2;
fl1 = fl2;
}
/* Pid must always be zero in child */
if (pid1 != 0) {
exit(1);
} else {
exit(0);
}
} else { /* parent */
tst_resm(TINFO, "process id in parent of child from "
"fork : %d", pid1);
pid2 = wait(&status); /* wait for child */
if (pid1 != pid2) {
tst_resm(TFAIL, "pids don't match : %d vs %d",
pid1, pid2);
continue;
}
if ((status >> 8) != 0) {
tst_resm(TFAIL, "child exited with failure");
continue;
}
tst_resm(TPASS, "test 1 PASSED");
}
}
cleanup();
/*NOTREACHED*/
}
/*
* setup() - performs all ONE TIME setup for this test
*/
void
setup()
{
/*
* capture signals
*/
tst_sig(FORK, DEF_HANDLER, cleanup);
/*
* Pause if that option was specified
*/
TEST_PAUSE;
}
/*
* cleanup() - performs all ONE TIME cleanup for this test at
* completion or premature exit
*/
void
cleanup()
{
/*
* print timing stats if that option was specified.
* print errno log if that option was specified.
*/
TEST_CLEANUP;
tst_exit();
}
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