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- /* vi: set sw=4 ts=4: */
- /*
- * fork test for uClibc
- * Copyright (C) 2000-2006 by Erik Andersen <andersen@uclibc.org>
- *
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <signal.h>
- #include <sys/wait.h>
- #define GOT1 (1 << 1)
- #define GOT2 (1 << 2)
- #define GOT3 (1 << 3)
- #ifdef __ARCH_USE_MMU__
- static void child_handler(int sig)
- {
- fprintf(stderr, "I got a SIGCHLD\n");
- }
- int main(void)
- {
- pid_t pid1, pid2, pid3;
- int status, result, wpid;
- signal(SIGCHLD, child_handler);
- if ((pid1 = fork()) == 0) {
- fprintf(stderr, "The child process sleeps 2 seconds...\n");
- sleep(4);
- fprintf(stderr, "Child exiting.\n");
- exit(-1);
- }
- if ((pid2 = fork()) == 0) {
- fprintf(stderr, "The child process sleeps 3 seconds...\n");
- sleep(3);
- fprintf(stderr, "Child exiting.\n");
- exit(-1);
- }
- if ((pid3 = fork()) == 0) {
- fprintf(stderr, "The child process sleeps 4 seconds...\n");
- sleep(2);
- fprintf(stderr, "Child exiting.\n");
- exit(-1);
- }
- fprintf(stderr, "Parent: waiting for the child to die.\n");
- status = 0;
- while (1) {
- wpid = waitpid(pid1, &result, WNOHANG);
- if (wpid == pid1)
- status |= GOT1;
- wpid = waitpid(pid2, &result, WNOHANG);
- if (wpid == pid2)
- status |= GOT2;
- wpid = waitpid(pid3, &result, WNOHANG);
- if (wpid == pid3)
- status |= GOT3;
- if (status == (GOT1 | GOT2 | GOT3))
- break;
- }
- fprintf(stderr, "Child process exited.\nGoodbye.\n");
- return EXIT_SUCCESS;
- }
- #else
- int main(void)
- {
- printf("Skipping test on non-mmu host!\n");
- return EXIT_SUCCESS;
- }
- #endif
- /*
- Local Variables:
- c-file-style: "linux"
- c-basic-offset: 4
- tab-width: 4
- End:
- */
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