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authorUlrich Drepper <drepper@redhat.com>2002-12-02 08:07:18 +0000
committerUlrich Drepper <drepper@redhat.com>2002-12-02 08:07:18 +0000
commit01b5406684a71cc46be1254f1a08615a384e3fbe (patch)
tree5f182a81b74ddd719d240d619e2ebbaf2eaf3b7a /nptl/tst-fork3.c
parent720efe005bf1e5795e57b7b7acf828b4d9874b9f (diff)
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Tests for getppid in MT applications.
Diffstat (limited to 'nptl/tst-fork3.c')
-rw-r--r--nptl/tst-fork3.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/nptl/tst-fork3.c b/nptl/tst-fork3.c
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+/* 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;
+}