91 строка
2.3 KiB
C
91 строка
2.3 KiB
C
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "mpi.h"
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#include "orte/runtime/orte_wait.h"
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#include "opal/runtime/opal_progress.h"
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#include "runtime/runtime.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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int count = 0;
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static void callback(pid_t pid, int status, void *data)
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{
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printf("callback for %d, %d\n", pid, status);
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count--;
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}
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int main(int argc, char *argv[])
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{
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pid_t pid, ret;
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int status = -1;
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orte_init(true);
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pid = fork();
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if (pid > 0) {
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count++;
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printf("parent launched child #1 PID %d\n", pid);
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orte_wait_cb(pid, callback, NULL);
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} else {
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printf("child pid %d sleeping 10 seconds\n", getpid());
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sleep(10);
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printf("pid %d exiting after sleeping 10 seconds\n", getpid());
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exit(0);
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}
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pid = fork();
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if (pid > 0) {
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printf("parent launched child #2 PID %d\n", pid);
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ret = orte_waitpid(pid, &status, 0);
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printf("pid %d waitpid, status %d\n", ret, status);
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} else {
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printf("child pid %d sleeping 5 seconds\n", getpid());
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sleep(5);
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printf("pid %d exiting after sleeping 5 seconds\n", getpid());
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exit(0);
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}
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pid = fork();
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if (pid > 0) {
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count++;
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printf("parent launched child #3 PID %d\n", pid);
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orte_wait_cb(pid, callback, NULL);
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} else {
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printf("pid %d exiting after not sleeping at all\n", getpid());
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exit(0);
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}
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while (count > 0) {
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opal_progress();
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}
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orte_finalize();
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return 0;
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}
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