gallium/tests: Add test case for pipe_barrier.

src/gallium/tests/unit/Makefile

@@ -19,6 +19,7 @@ LINKS = \
 	$(PROG_LINKS)
 
 SOURCES = \
+	pipe_barrier_test.c \
 	u_format_test.c \
 	u_half_test.c
 

src/gallium/tests/unit/SConscript

@@ -5,6 +5,7 @@ env = env.Clone()
 env.Prepend(LIBS = [gallium])
 
 progs = [
+    'pipe_barrier_test',
     'u_format_test',
     'u_half_test'
 ]

src/gallium/tests/unit/pipe_barrier_test.c

@@ -0,0 +1,86 @@
+/**************************************************************************
+ *
+ * Copyright 2009-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ *  Test case for pipe_barrier.
+ *
+ *  The test succeeds if no thread exits before all the other threads reach
+ *  the barrier.
+ */
+
+
+#include <stdio.h>
+
+#include "os/os_thread.h"
+#include "os/os_time.h"
+
+
+#define NUM_THREADS 10
+
+static pipe_thread threads[NUM_THREADS];
+static pipe_barrier barrier;
+static int thread_ids[NUM_THREADS];
+
+
+static PIPE_THREAD_ROUTINE(thread_function, thread_data)
+{
+   int thread_id = *((int *) thread_data);
+
+   printf("thread %d starting\n", thread_id);
+   os_time_sleep(thread_id * 1000 * 1000);
+   printf("thread %d before barrier\n", thread_id);
+   pipe_barrier_wait(&barrier);
+   printf("thread %d exiting\n", thread_id);
+
+   return NULL;
+}
+
+
+int main()
+{
+   int i;
+
+   printf("pipe_barrier_test starting\n");
+
+   pipe_barrier_init(&barrier, NUM_THREADS);
+
+   for (i = 0; i < NUM_THREADS; i++) {
+      thread_ids[i] = i;
+      threads[i] = pipe_thread_create(thread_function, (void *) &thread_ids[i]);
+   }
+
+   for (i = 0; i < NUM_THREADS; i++ ) {
+      pipe_thread_wait(threads[i]);
+   }
+
+   pipe_barrier_destroy(&barrier);
+
+   printf("pipe_barrier_test exiting\n");
+
+   return 0;
+}