summaryrefslogtreecommitdiff
path: root/test/nptl/tst-mutex9.c
diff options
context:
space:
mode:
Diffstat (limited to 'test/nptl/tst-mutex9.c')
-rw-r--r--test/nptl/tst-mutex9.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/test/nptl/tst-mutex9.c b/test/nptl/tst-mutex9.c
new file mode 100644
index 0000000..a4bb3aa
--- /dev/null
+++ b/test/nptl/tst-mutex9.c
@@ -0,0 +1,190 @@
+/* Copyright (C) 2003, 2004 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 <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/wait.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+int gettimeofday(struct timeval *tv, struct timezone *tz);
+
+
+static int
+do_test (void)
+{
+ size_t ps = sysconf (_SC_PAGESIZE);
+ char tmpfname[] = "/tmp/tst-mutex9.XXXXXX";
+ char data[ps];
+ void *mem;
+ int fd;
+ pthread_mutex_t *m;
+ pthread_mutexattr_t a;
+ pid_t pid;
+ char *p;
+
+ fd = mkstemp (tmpfname);
+ if (fd == -1)
+ {
+ printf ("cannot open temporary file: %m\n");
+ return 1;
+ }
+
+ /* Make sure it is always removed. */
+ unlink (tmpfname);
+
+ /* Create one page of data. */
+ memset (data, '\0', ps);
+
+ /* Write the data to the file. */
+ if (write (fd, data, ps) != (ssize_t) ps)
+ {
+ puts ("short write");
+ return 1;
+ }
+
+ mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (mem == MAP_FAILED)
+ {
+ printf ("mmap failed: %m\n");
+ return 1;
+ }
+
+ m = (pthread_mutex_t *) (((uintptr_t) mem + __alignof (pthread_mutex_t))
+ & ~(__alignof (pthread_mutex_t) - 1));
+ p = (char *) (m + 1);
+
+ if (pthread_mutexattr_init (&a) != 0)
+ {
+ puts ("mutexattr_init failed");
+ return 1;
+ }
+
+ if (pthread_mutexattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
+ {
+ puts ("mutexattr_setpshared failed");
+ return 1;
+ }
+
+ if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_RECURSIVE) != 0)
+ {
+ puts ("mutexattr_settype failed");
+ return 1;
+ }
+
+ if (pthread_mutex_init (m, &a) != 0)
+ {
+ puts ("mutex_init failed");
+ return 1;
+ }
+
+ if (pthread_mutex_lock (m) != 0)
+ {
+ puts ("mutex_lock failed");
+ return 1;
+ }
+
+ if (pthread_mutexattr_destroy (&a) != 0)
+ {
+ puts ("mutexattr_destroy failed");
+ return 1;
+ }
+
+ puts ("going to fork now");
+ pid = fork ();
+ if (pid == -1)
+ {
+ puts ("fork failed");
+ return 1;
+ }
+ else if (pid == 0)
+ {
+ if (pthread_mutex_trylock (m) == 0)
+ {
+ puts ("child: mutex_trylock succeeded");
+ exit (1);
+ }
+
+ if (pthread_mutex_unlock (m) == 0)
+ {
+ puts ("child: mutex_unlock succeeded");
+ exit (1);
+ }
+
+ struct timeval tv;
+ gettimeofday (&tv, NULL);
+ struct timespec ts;
+ TIMEVAL_TO_TIMESPEC (&tv, &ts);
+ ts.tv_nsec += 500000000;
+ if (ts.tv_nsec >= 1000000000)
+ {
+ ++ts.tv_sec;
+ ts.tv_nsec -= 1000000000;
+ }
+
+ int e = pthread_mutex_timedlock (m, &ts);
+ if (e == 0)
+ {
+ puts ("child: mutex_timedlock succeeded");
+ exit (1);
+ }
+ if (e != ETIMEDOUT)
+ {
+ puts ("child: mutex_timedlock didn't time out");
+ exit (1);
+ }
+
+ alarm (1);
+
+ pthread_mutex_lock (m);
+
+ puts ("child: mutex_lock returned");
+
+ exit (0);
+ }
+
+ sleep (2);
+
+ int status;
+ if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
+ {
+ puts ("waitpid failed");
+ return 1;
+ }
+ if (! WIFSIGNALED (status))
+ {
+ puts ("child not killed by signal");
+ return 1;
+ }
+ if (WTERMSIG (status) != SIGALRM)
+ {
+ puts ("child not killed by SIGALRM");
+ return 1;
+ }
+
+ return 0;
+}
+
+#define TIMEOUT 3
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"