summaryrefslogtreecommitdiff
path: root/linuxthreads/Examples/ex8.c
diff options
context:
space:
mode:
Diffstat (limited to 'linuxthreads/Examples/ex8.c')
-rw-r--r--linuxthreads/Examples/ex8.c101
1 files changed, 0 insertions, 101 deletions
diff --git a/linuxthreads/Examples/ex8.c b/linuxthreads/Examples/ex8.c
deleted file mode 100644
index bda81b9c61..0000000000
--- a/linuxthreads/Examples/ex8.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/* Tests for fork in multi-threaded environment.
- Copyright (C) 2000 Free Software Foundation, Inc.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
-
- 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; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <errno.h>
-#include <error.h>
-#include <stdlib.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <sys/wait.h>
-
-enum
-{
- PREPARE_BIT = 1,
- PARENT_BIT = 2,
- CHILD_BIT = 4
-};
-
-static int var;
-
-static void
-prepare (void)
-{
- var |= PREPARE_BIT;
-}
-
-static void
-parent (void)
-{
- var |= PARENT_BIT;
-}
-
-static void
-child (void)
-{
- var |= CHILD_BIT;
-}
-
-
-static void *thread (void *arg);
-
-
-int
-main (void)
-{
- pthread_t th;
- void *res;
-
- pthread_atfork (prepare, parent, child);
-
- if (pthread_create (&th, NULL, thread, NULL) != 0)
- error (EXIT_FAILURE, 0, "cannot create thread");
-
- pthread_join (th, &res);
-
- return (int) (long int) res;
-}
-
-
-static void *
-thread (void *arg)
-{
- int status;
- pid_t pid;
-
- pid = fork ();
- if (pid == 0)
- {
- /* We check whether the `prepare' and `child' function ran. */
- exit (var != (PREPARE_BIT | CHILD_BIT));
- }
- else if (pid == (pid_t) -1)
- error (EXIT_FAILURE, errno, "cannot fork");
-
- if (waitpid (pid, &status, 0) != pid)
- error (EXIT_FAILURE, errno, "wrong child");
-
- if (WTERMSIG (status) != 0)
- error (EXIT_FAILURE, 0, "Child terminated incorrectly");
- status = WEXITSTATUS (status);
-
- if (status == 0)
- status = var != (PREPARE_BIT | PARENT_BIT);
-
- return (void *) (long int) status;
-}