| /* Copyright (C) 2002 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Roland McGrath <roland@redhat.com>, 2002. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <errno.h> |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <sys/wait.h> |
| |
| |
| static pid_t initial_pid; |
| |
| |
| static void * |
| tf2 (void *arg) |
| { |
| if (getppid () != initial_pid) |
| { |
| printf ("getppid in thread returned %ld, expected %ld\n", |
| (long int) getppid (), (long int) initial_pid); |
| return (void *) -1; |
| } |
| |
| return NULL; |
| } |
| |
| |
| static void * |
| tf1 (void *arg) |
| { |
| pid_t child = fork (); |
| if (child == 0) |
| { |
| if (getppid () != initial_pid) |
| { |
| printf ("first getppid returned %ld, expected %ld\n", |
| (long int) getppid (), (long int) initial_pid); |
| exit (1); |
| } |
| |
| pthread_t th2; |
| if (pthread_create (&th2, NULL, tf2, NULL) != 0) |
| { |
| puts ("child: pthread_create failed"); |
| exit (1); |
| } |
| |
| void *result; |
| if (pthread_join (th2, &result) != 0) |
| { |
| puts ("pthread_join failed"); |
| exit (1); |
| } |
| |
| exit (result == NULL ? 0 : 1); |
| } |
| else if (child == -1) |
| { |
| puts ("initial fork failed"); |
| exit (1); |
| } |
| |
| int status; |
| if (TEMP_FAILURE_RETRY (waitpid (child, &status, 0)) != child) |
| { |
| printf ("waitpid failed: %m\n"); |
| exit (1); |
| } |
| |
| exit (status); |
| } |
| |
| |
| int |
| main (void) |
| { |
| initial_pid = getpid (); |
| |
| pthread_t th1; |
| if (pthread_create (&th1, NULL, tf1, NULL) != 0) |
| { |
| puts ("parent: pthread_create failed"); |
| exit (1); |
| } |
| |
| /* This call should never return. */ |
| pthread_join (th1, NULL); |
| |
| return 1; |
| } |