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authorUlrich Drepper <drepper@redhat.com>2004-02-19 04:10:16 +0000
committerUlrich Drepper <drepper@redhat.com>2004-02-19 04:10:16 +0000
commit37c054c7c4a969816d2bc3c8284bdcadf68ebeec (patch)
treeec0a8cc53830ddb66445be30615fd15b894495fa /nptl/tst-barrier4.c
parentdc39124662b25ce2db28454f1749d67550e4de31 (diff)
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Update.
* sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S (pthread_barrier_wait): After wakeup, release lock only when the last thread stopped using the barrier object. * sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S (pthread_barrier_wait): Likewise. * sysdeps/pthread/pthread_barrier_wait.c (pthread_barrier_wait): Likewise. * Makefile (tests): Add tst-barrier4. * tst-barrier4.c: New file.
Diffstat (limited to 'nptl/tst-barrier4.c')
-rw-r--r--nptl/tst-barrier4.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/nptl/tst-barrier4.c b/nptl/tst-barrier4.c
new file mode 100644
index 0000000..a811fee
--- /dev/null
+++ b/nptl/tst-barrier4.c
@@ -0,0 +1,102 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+ 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. */
+
+/* This is a test for behavior not guaranteed by POSIX. */
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+
+
+static pthread_barrier_t b1;
+static pthread_barrier_t b2;
+
+
+#define N 20
+
+static void *
+tf (void *arg)
+{
+ int round = 0;
+
+ while (round++ < 30)
+ {
+ if (pthread_barrier_wait (&b1) == PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ pthread_barrier_destroy (&b1);
+ if (pthread_barrier_init (&b1, NULL, N) != 0)
+ {
+ puts ("tf: 1st barrier_init failed");
+ exit (1);
+ }
+ }
+
+ if (pthread_barrier_wait (&b2) == PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ pthread_barrier_destroy (&b2);
+ if (pthread_barrier_init (&b2, NULL, N) != 0)
+ {
+ puts ("tf: 2nd barrier_init failed");
+ exit (1);
+ }
+ }
+ }
+
+ return NULL;
+}
+
+
+static int
+do_test (void)
+{
+ int cnt;
+
+ if (pthread_barrier_init (&b1, NULL, N) != 0)
+ {
+ puts ("1st barrier_init failed");
+ return 1;
+ }
+
+ if (pthread_barrier_init (&b2, NULL, N) != 0)
+ {
+ puts ("2nd barrier_init failed");
+ return 1;
+ }
+
+ pthread_t th[N - 1];
+ for (cnt = 0; cnt < N - 1; ++cnt)
+ if (pthread_create (&th[cnt], NULL, tf, NULL) != 0)
+ {
+ puts ("pthread_create failed");
+ return 1;
+ }
+
+ tf (NULL);
+
+ for (cnt = 0; cnt < N - 1; ++cnt)
+ if (pthread_join (th[cnt], NULL) != 0)
+ {
+ puts ("pthread_join failed");
+ return 1;
+ }
+
+ return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"