mirror of
https://github.com/ioacademy-jikim/debugging
synced 2025-06-09 00:46:12 +00:00
56 lines
962 B
C
56 lines
962 B
C
/* fork a process that has created a detached thread. */
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#include <stdlib.h>
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#include <sys/wait.h>
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#include <pthread.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <signal.h>
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static void *threadmain(void *dummy)
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{
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sleep((unsigned long)dummy);
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return NULL;
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}
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int main(int argc, char **argv)
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{
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int ctr;
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pid_t childpid;
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pthread_t childthread;
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void *res;
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int status;
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pthread_create(&childthread, NULL, threadmain, (void *)2);
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pthread_detach(childthread);
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childpid = fork();
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switch (childpid) {
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case 0:
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pthread_create(&childthread, NULL, threadmain, 0);
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pthread_join(childthread, &res);
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exit(0);
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break;
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case -1:
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perror("FAILED: fork failed\n");
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break;
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default:
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break;
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}
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ctr = 0;
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while (waitpid(childpid, &status, 0) != childpid) {
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sleep(1);
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ctr++;
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if (ctr >= 10) {
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fprintf(stderr, "FAILED - timeout waiting for child\n");
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return 0;
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}
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}
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fprintf(stderr, "PASS\n");
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return 0;
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}
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