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/* ==== test_fork.c ============================================================
* Copyright (c) 1994 by Chris Provenzano, proven@athena.mit.edu
*
* Description : Test fork() and dup2() calls.
*
* 1.00 94/04/29 proven
* -Started coding this file.
*/
#include <pthread.h>
#include <pthread_np.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>
#include "test.h"
void *
sleeper(void *arg)
{
pthread_set_name_np(pthread_self(), "slpr");
printf("sleeper\n");
sleep(10);
PANIC("sleeper timed out");
}
static void
sigchld(sig)
int sig;
{
int status;
ASSERT(sig == SIGCHLD);
CHECKe(wait(&status));
ASSERT(WIFEXITED(status));
ASSERT(WEXITSTATUS(status) == 0);
SUCCEED;
}
int
main()
{
int flags;
pid_t pid;
pthread_t sleeper_thread;
CHECKe(flags = fcntl(STDOUT_FILENO, F_GETFL));
if ((flags & (O_NONBLOCK | O_NDELAY))) {
CHECKe(fcntl(STDOUT_FILENO, F_SETFL,
flags & ~(O_NONBLOCK | O_NDELAY)));
}
CHECKr(pthread_create(&sleeper_thread, NULL, sleeper, NULL));
sleep(1);
CHECKe(signal(SIGCHLD, sigchld));
printf("forking\n");
CHECKe(pid = fork());
switch(pid) {
case 0:
sleep(1);
printf("child process %d\n", getpid());
_thread_dump_info();
printf("\n");
_exit(0);
PANIC("_exit");
default:
printf("parent process %d [child %d]\n", getpid(), pid);
_thread_dump_info();
printf("\n");
CHECKe(pause());
PANIC("pause");
}
}
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