Add various benchmarks.
These are based on ones from system/extras/tests/bionic/.
Change-Id: I7b1ae15a2ca5d1031a6a511d97b88125c1770047
diff --git a/benchmarks/semaphore_benchmark.cpp b/benchmarks/semaphore_benchmark.cpp
new file mode 100644
index 0000000..a11fcc1
--- /dev/null
+++ b/benchmarks/semaphore_benchmark.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include "benchmark.h"
+
+#include <semaphore.h>
+
+static void BM_semaphore_sem_getvalue(int iters) {
+ StopBenchmarkTiming();
+ sem_t semaphore;
+ sem_init(&semaphore, 1, 1);
+ StartBenchmarkTiming();
+
+ for (int i = 0; i < iters; ++i) {
+ int dummy;
+ sem_getvalue(&semaphore, &dummy);
+ }
+
+ StopBenchmarkTiming();
+}
+BENCHMARK(BM_semaphore_sem_getvalue);
+
+static void BM_semaphore_sem_wait_sem_post(int iters) {
+ StopBenchmarkTiming();
+ sem_t semaphore;
+ sem_init(&semaphore, 1, 1);
+ StartBenchmarkTiming();
+
+ for (int i = 0; i < iters; ++i) {
+ sem_wait(&semaphore);
+ sem_post(&semaphore);
+ }
+
+ StopBenchmarkTiming();
+}
+BENCHMARK(BM_semaphore_sem_wait_sem_post);