--- /dev/null
+/*
+ * Copyright 2016 Facebook, Inc.
+ *
+ * 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 <folly/Benchmark.h>
+#include <folly/SmallLocks.h>
+
+BENCHMARK(MicroSpinLockUncontendedBenchmark, iters) {
+ folly::MicroSpinLock lock;
+ lock.init();
+ while (iters--) {
+ lock.lock();
+ lock.unlock();
+ }
+}
+
+BENCHMARK(PicoSpinLockUncontendedBenchmark, iters) {
+ // uint8_t would be more fair, but PicoSpinLock needs at lesat two bytes
+ folly::PicoSpinLock<uint16_t> lock;
+ lock.init();
+ while (iters--) {
+ lock.lock();
+ lock.unlock();
+ }
+}
+
+BENCHMARK(MicroLockUncontendedBenchmark, iters) {
+ folly::MicroLock lock;
+ lock.init();
+ while (iters--) {
+ lock.lock();
+ lock.unlock();
+ }
+}
+
+BENCHMARK(StdMutexUncontendedBenchmark, iters) {
+ std::mutex lock;
+ while (iters--) {
+ lock.lock();
+ lock.unlock();
+ }
+}
+
+struct VirtualBase {
+ virtual void foo() = 0;
+ virtual ~VirtualBase() {}
+};
+
+struct VirtualImpl : VirtualBase {
+ virtual void foo() { /* noop */
+ }
+ virtual ~VirtualImpl() {}
+};
+
+#ifndef __clang__
+__attribute__((noinline, noclone)) VirtualBase* makeVirtual() {
+ return new VirtualImpl();
+}
+
+BENCHMARK(VirtualFunctionCall, iters) {
+ VirtualBase* vb = makeVirtual();
+ while (iters--) {
+ vb->foo();
+ }
+ delete vb;
+}
+#endif
+
+int main(int argc, char** argv) {
+ gflags::ParseCommandLineFlags(&argc, &argv, true);
+ folly::runBenchmarks();
+ return 0;
+}