/* Copyright (C) 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. 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, see <http://www.gnu.org/licenses/>. */ #include <errno.h> #include <pthread.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/mman.h> #include <sys/wait.h> static pthread_barrier_t b2; static int fd; static int called; static void cl (void *arg) { called = 1; } static void * tf (void *arg) { int r = pthread_barrier_wait (&b2); if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child thread: barrier_wait failed"); exit (1); } pthread_cleanup_push (cl, NULL); /* This call should never return. */ (void) lockf (fd, F_LOCK, 0); pthread_cleanup_pop (0); return NULL; } static int do_test (void) { char fname[] = "/tmp/cancel16XXXXXX"; fd = mkstemp (fname); if (fd == -1) { puts ("mkstemp failed"); return 1; } unlink (fname); char mem[sizeof (pthread_barrier_t)]; memset (mem, '\0', sizeof (mem)); if (TEMP_FAILURE_RETRY (pwrite (fd, mem, sizeof (mem), 0)) != sizeof (mem)) { puts ("pwrite failed"); return 1; } void *p = mmap (NULL, sizeof (mem), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); if (p == MAP_FAILED) { puts ("mmap failed"); return 1; } pthread_barrier_t *b = (pthread_barrier_t *) p; pthread_barrierattr_t ba; if (pthread_barrierattr_init (&ba) != 0) { puts ("barrierattr_init failed"); return 1; } if (pthread_barrierattr_setpshared (&ba, 1) != 0) { puts ("barrierattr_setshared failed"); return 1; } if (pthread_barrier_init (b, &ba, 2) != 0) { puts ("1st barrier_init failed"); return 1; } if (pthread_barrierattr_destroy (&ba) != 0) { puts ("barrier_destroy failed"); return 1; } pid_t pid = fork (); if (pid == 0) { /* Child. Lock the file and wait. */ if (lockf (fd, F_LOCK, 0) != 0) { puts ("child process: lockf failed"); _exit (1); } int r = pthread_barrier_wait (b); if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child process: 1st barrier_wait failed"); _exit (1); } /* Make sure the process dies. */ alarm (5); r = pthread_barrier_wait (b); if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child process: 2nd barrier_wait failed"); _exit (1); } _exit (0); } if (pid == -1) { puts ("fork failed"); return 1; } int r = pthread_barrier_wait (b); if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("main: 1st barrier_wait failed"); _exit (1); } if (pthread_barrier_init (&b2, NULL, 2) != 0) { puts ("2nd barrier_init failed"); return 1; } pthread_t th; if (pthread_create (&th, NULL, tf, NULL) != 0) { puts ("create failed"); return 1; } r = pthread_barrier_wait (&b2); if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("main: 2nd barrier_wait failed"); return 1; } /* Delay. */ sleep (1); if (pthread_cancel (th) != 0) { puts ("cancel failed"); return 1; } void *result; if (pthread_join (th, &result) != 0) { puts ("join failed"); return 1; } if (result != PTHREAD_CANCELED) { puts ("thread not canceled"); return 1; } if (called == 0) { puts ("cleanup handler not called"); return 1; } r = pthread_barrier_wait (b); if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("main: 3rd barrier_wait failed"); return 1; } int status; if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) { puts ("waitpid failed"); return 1; } if (WEXITSTATUS (status) != 0) { printf ("child process exits with %d\n", WEXITSTATUS (status)); return 1; } if (lockf (fd, F_LOCK, 0) != 0) { puts ("main: lockf failed"); return 1; } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"