From: Jan Stancek <jstancek@redhat.com>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH 4/4] tst_atomic: add test for tst_atomic_inc
Date: Wed, 13 Apr 2016 15:10:46 +0200 [thread overview]
Message-ID: <c7a40e44c496051bedb3c8af46d16d42c50c49af.1460552890.git.jstancek@redhat.com> (raw)
In-Reply-To: <82bcc056edc64dee3a13275a2b4bdbec958f60eb.1460552890.git.jstancek@redhat.com>
Spawn a lot of threads and run tst_atomic_inc in a loop.
At the end we expect value to be THREADS * ITERATIONS.
Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
lib/newlib_tests/Makefile | 1 +
lib/newlib_tests/test09.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 63 insertions(+)
create mode 100644 lib/newlib_tests/test09.c
diff --git a/lib/newlib_tests/Makefile b/lib/newlib_tests/Makefile
index 5771712fab10..0e4eeb83b6d4 100644
--- a/lib/newlib_tests/Makefile
+++ b/lib/newlib_tests/Makefile
@@ -6,5 +6,6 @@ CFLAGS += -W -Wall
LDLIBS += -lltp
test08: CFLAGS+=-pthread
+test09: CFLAGS+=-pthread
include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/lib/newlib_tests/test09.c b/lib/newlib_tests/test09.c
new file mode 100644
index 000000000000..7b063b55cea4
--- /dev/null
+++ b/lib/newlib_tests/test09.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2016 Linux Test Project
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+/*
+ * Test that tst_atomic_inc works as expected.
+ */
+
+#include <pthread.h>
+#include "tst_test.h"
+
+#define THREADS 64
+#define ITERATIONS 100000
+
+static int atomic;
+
+static void *worker(void *id)
+{
+ int i;
+
+ (void) id;
+ for (i = 0; i < ITERATIONS; i++)
+ tst_atomic_inc(&atomic);
+
+ return NULL;
+}
+
+static void do_test(void)
+{
+ long i;
+ pthread_t threads[THREADS];
+
+ for (i = 0; i < THREADS; i++)
+ pthread_create(threads+i, NULL, worker, (void *)i);
+
+ for (i = 0; i < THREADS; i++) {
+ tst_res(TINFO, "Joining thread %li", i);
+ pthread_join(threads[i], NULL);
+ }
+
+ if (atomic == THREADS * ITERATIONS)
+ tst_res(TPASS, "Atomic working as expected");
+ else
+ tst_res(TFAIL, "Atomic does not have expected value");
+}
+
+static struct tst_test test = {
+ .tid = "test09",
+ .test_all = do_test,
+ .forks_child = 1
+};
--
1.8.3.1
next prev parent reply other threads:[~2016-04-13 13:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-13 13:10 [LTP] [PATCH 1/4] tst_atomic: make tst_atomic_inc take a signed integer Jan Stancek
2016-04-13 13:10 ` [LTP] [PATCH 2/4] m4: add a check for __sync_add_and_fetch Jan Stancek
2016-04-13 14:04 ` Cyril Hrubis
2016-04-13 13:10 ` [LTP] [PATCH 3/4] tst_atomic: add atomic_add_return for x86/64, ppc/64 and s390/x Jan Stancek
2016-04-13 13:59 ` Cyril Hrubis
2016-04-13 14:36 ` Jan Stancek
2016-04-13 15:03 ` Cyril Hrubis
2016-04-13 13:10 ` Jan Stancek [this message]
2016-04-13 14:15 ` [LTP] [PATCH 4/4] tst_atomic: add test for tst_atomic_inc Cyril Hrubis
2016-04-13 14:07 ` [LTP] [PATCH 1/4] tst_atomic: make tst_atomic_inc take a signed integer Cyril Hrubis
2016-04-13 14:32 ` Jan Stancek
2016-04-13 15:33 ` Cyril Hrubis
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