test/leaderkill.c

/* Test handle_group_exit () handling of a thread leader still alive with its
 * thread child calling exit_group () and proper passing of the process exit
 * code to the process parent of this whole thread group.
 * 
 * gcc -o test/leaderkill test/leaderkill.c -Wall -ggdb2 -pthread;./test/leaderkill & pid=$!;sleep 1;strace -o x -q ./strace -f -p $pid
 * It must print: write(1, "OK\n", ...
 */

#include <pthread.h>
#include <assert.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/wait.h>

static void *start0 (void *arg)
{
  sleep (1);

  exit (42);
}

static void *start1 (void *arg)
{
  pause ();
  /* NOTREACHED */
  assert (0);
}

int main (void)
{
  pthread_t thread0;
  pthread_t thread1;
  int i;
  pid_t child, got_pid;
  int status;

  sleep (2);

  child = fork ();
  switch (child)
    {
      case -1:
	abort ();
      case 0:
	i = pthread_create (&thread0, NULL, start0, NULL);
	assert (i == 0);
	i = pthread_create (&thread1, NULL, start1, NULL);
	assert (i == 0);
	pause ();
	/* NOTREACHED */
	assert (0);
	break;
      default:
	got_pid = waitpid (child, &status, 0);
	assert (got_pid == child);
	assert (WIFEXITED (status));
	assert (WEXITSTATUS (status) == 42);
	puts ("OK");
	exit (0);
    }
  /* NOTREACHED */
  abort ();
}