107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* NAME
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* fork06.c
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*
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* DESCRIPTION
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* Test that a process can fork children a large number of
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* times in succession
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*
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* ALGORITHM
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* Attempt to fork a child that exits immediately
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* Repeat it many times(1000), counting the number of successes and
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* failures
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*
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* USAGE
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* fork06
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*
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* HISTORY
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* 07/2001 Ported by Wayne Boyer
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*
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* RESTRICTIONS
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* None
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdio.h>
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#include "test.h"
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char *TCID = "fork06";
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int TST_TOTAL = 1;
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static void setup(void);
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static void cleanup(void);
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#define NUMFORKS 1000
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int main(int ac, char **av)
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{
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int i, pid, status, childpid, succeed, fail;
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int lc;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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succeed = 0;
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fail = 0;
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for (i = 0; i < NUMFORKS; i++) {
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pid = fork();
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if (pid == -1) {
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fail++;
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continue;
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}
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if (pid == 0)
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_exit(0);
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childpid = wait(&status);
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if (pid != childpid)
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tst_resm(TFAIL, "pid from wait %d", childpid);
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succeed++;
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}
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tst_resm(TINFO, "tries %d", i);
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tst_resm(TINFO, "successes %d", succeed);
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tst_resm(TINFO, "failures %d", fail);
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if ((wait(&status)) == -1)
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tst_resm(TINFO, "There were no children to wait for");
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else
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tst_resm(TINFO, "There were children left");
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_sig(FORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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}
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static void cleanup(void)
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{
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}
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