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- /*
- * Copyright 2018-present 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/ThreadLocal.h>
- #include <condition_variable>
- #include <mutex>
- #include <thread>
- using namespace folly;
- template <typename Tag1, typename Tag2>
- void runTestTag(int iters, int numThreads) {
- BenchmarkSuspender susp;
- ThreadLocalPtr<int, Tag1> t1;
- t1.reset(new int(1));
- std::mutex m, mw;
- std::condition_variable cv, cvw;
- bool running = true;
- int numRunning = 0;
- std::vector<std::thread> threads;
- for (int i = 0; i < numThreads; i++) {
- threads.push_back(std::thread([&]() mutable {
- t1.reset(new int(1));
- // notify if all the threads have created the t1
- bool notify = false;
- {
- std::lock_guard<std::mutex> lk(m);
- if (++numRunning == numThreads) {
- notify = true;
- }
- }
- if (notify) {
- cv.notify_one();
- }
- // now wait
- {
- std::unique_lock<std::mutex> lk(mw);
- cvw.wait(lk, [&]() { return !running; });
- }
- }));
- }
- // wait for the threads to create the t1
- {
- std::unique_lock<std::mutex> lk(m);
- cv.wait(lk, [&]() { return numRunning == numThreads; });
- }
- ThreadLocalPtr<int, Tag2> t3;
- t3.reset(new int(2));
- susp.dismiss();
- // run the test loop
- for (int i = 0; i < iters; i++) {
- ThreadLocalPtr<int, Tag2> t2;
- t2.reset(new int(2));
- }
- susp.rehire();
- {
- std::lock_guard<std::mutex> lk(mw);
- running = false;
- }
- cvw.notify_all();
- for (auto& t : threads) {
- t.join();
- }
- }
- void runTestSameTag(int iters, int numThreads) {
- runTestTag<void, void>(iters, numThreads);
- }
- void runTestDiffTag(int iters, int numThreads) {
- runTestTag<void, int>(iters, numThreads);
- }
- BENCHMARK_DRAW_LINE();
- BENCHMARK_PARAM(runTestSameTag, 1)
- BENCHMARK_PARAM(runTestSameTag, 128)
- BENCHMARK_PARAM(runTestSameTag, 256)
- BENCHMARK_PARAM(runTestSameTag, 512)
- BENCHMARK_PARAM(runTestSameTag, 1024)
- BENCHMARK_PARAM(runTestSameTag, 2048)
- BENCHMARK_DRAW_LINE();
- BENCHMARK_PARAM(runTestDiffTag, 1)
- BENCHMARK_PARAM(runTestDiffTag, 128)
- BENCHMARK_PARAM(runTestDiffTag, 256)
- BENCHMARK_PARAM(runTestDiffTag, 512)
- BENCHMARK_PARAM(runTestDiffTag, 1024)
- BENCHMARK_PARAM(runTestDiffTag, 2048)
- BENCHMARK_DRAW_LINE();
- int main(int argc, char* argv[]) {
- gflags::ParseCommandLineFlags(&argc, &argv, true);
- folly::runBenchmarks();
- return 0;
- }
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