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Telegram/ThirdParty/dispatch/tests/dispatch_pingpong.c

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+/*
+ * Copyright (c) 2008-2011 Apple Inc. All rights reserved.
+ *
+ * @APPLE_APACHE_LICENSE_HEADER_START@
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * @APPLE_APACHE_LICENSE_HEADER_END@
+ */
+
+#include <dispatch/dispatch.h>
+#include <stdio.h>
+
+#include <bsdtests.h>
+#include "dispatch_test.h"
+
+uint32_t count = 0;
+const uint32_t final = 1000000; // 10M
+
+static void
+pingpongloop(dispatch_group_t group, dispatch_queue_t ping, dispatch_queue_t pong, size_t counter)
+{
+	//printf("[%p] %s: %lu\n", (void*)(uintptr_t)pthread_self(), dispatch_queue_get_label(dispatch_get_current_queue()), counter);
+	if (counter < final) {
+		dispatch_group_async(group, pong, ^{ pingpongloop(group, pong, ping, counter+1); });
+	} else {
+		count = (uint32_t)counter;
+	}
+}
+
+int
+main(void)
+{
+	dispatch_test_start("Dispatch Ping Pong");
+
+	dispatch_queue_t ping = dispatch_queue_create("ping", NULL);
+	test_ptr_notnull("dispatch_queue_create(ping)", ping);
+	dispatch_queue_t pong = dispatch_queue_create("pong", NULL);
+	test_ptr_notnull("dispatch_queue_create(pong)", pong);
+
+	dispatch_group_t group = dispatch_group_create();
+	test_ptr_notnull("dispatch_group_create", group);
+
+	pingpongloop(group, ping, pong, 0);
+	dispatch_group_wait(group, DISPATCH_TIME_FOREVER);
+
+	test_long("count", count, final);
+
+	dispatch_release(ping);
+	dispatch_release(pong);
+	dispatch_release(group);
+
+	test_stop();
+
+	return 0;
+}