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139 lines
4.5 KiB
139 lines
4.5 KiB
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <BnBinderRpcBenchmark.h>
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#include <android-base/logging.h>
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#include <benchmark/benchmark.h>
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#include <binder/Binder.h>
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#include <binder/RpcServer.h>
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#include <binder/RpcSession.h>
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#include <thread>
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#include <sys/types.h>
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#include <unistd.h>
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using android::BBinder;
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using android::IBinder;
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using android::interface_cast;
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using android::OK;
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using android::RpcServer;
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using android::RpcSession;
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using android::sp;
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using android::binder::Status;
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class MyBinderRpcBenchmark : public BnBinderRpcBenchmark {
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Status repeatString(const std::string& str, std::string* out) override {
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*out = str;
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return Status::ok();
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}
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Status repeatBinder(const sp<IBinder>& str, sp<IBinder>* out) override {
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*out = str;
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return Status::ok();
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}
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};
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static sp<RpcSession> gSession = RpcSession::make();
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void BM_getRootObject(benchmark::State& state) {
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while (state.KeepRunning()) {
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CHECK(gSession->getRootObject() != nullptr);
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}
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}
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BENCHMARK(BM_getRootObject);
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void BM_pingTransaction(benchmark::State& state) {
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sp<IBinder> binder = gSession->getRootObject();
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CHECK(binder != nullptr);
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while (state.KeepRunning()) {
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CHECK_EQ(OK, binder->pingBinder());
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}
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}
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BENCHMARK(BM_pingTransaction);
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void BM_repeatString(benchmark::State& state) {
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sp<IBinder> binder = gSession->getRootObject();
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CHECK(binder != nullptr);
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sp<IBinderRpcBenchmark> iface = interface_cast<IBinderRpcBenchmark>(binder);
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CHECK(iface != nullptr);
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// Googlers might see go/another-look-at-aidl-hidl-perf
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//
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// When I checked in July 2019, 99.5% of AIDL transactions and 99.99% of HIDL
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// transactions were less than one page in size (system wide during a test
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// involving media and camera). This is why this diverges from
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// binderThroughputTest and hwbinderThroughputTest. Future consideration - get
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// this data on continuous integration. Here we are testing sending a
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// transaction of twice this size. In other cases, we should focus on
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// benchmarks of particular usecases. If individual binder transactions like
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// the ones tested here are fast, then Android performance will be dominated
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// by how many binder calls work together (and by factors like the scheduler,
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// thermal throttling, core choice, etc..).
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std::string str = std::string(getpagesize() * 2, 'a');
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CHECK_EQ(str.size(), getpagesize() * 2);
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while (state.KeepRunning()) {
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std::string out;
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Status ret = iface->repeatString(str, &out);
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CHECK(ret.isOk()) << ret;
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}
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}
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BENCHMARK(BM_repeatString);
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void BM_repeatBinder(benchmark::State& state) {
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sp<IBinder> binder = gSession->getRootObject();
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CHECK(binder != nullptr);
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sp<IBinderRpcBenchmark> iface = interface_cast<IBinderRpcBenchmark>(binder);
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CHECK(iface != nullptr);
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while (state.KeepRunning()) {
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// force creation of a new address
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sp<IBinder> binder = sp<BBinder>::make();
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sp<IBinder> out;
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Status ret = iface->repeatBinder(binder, &out);
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CHECK(ret.isOk()) << ret;
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}
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}
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BENCHMARK(BM_repeatBinder);
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int main(int argc, char** argv) {
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::benchmark::Initialize(&argc, argv);
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if (::benchmark::ReportUnrecognizedArguments(argc, argv)) return 1;
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std::string addr = std::string(getenv("TMPDIR") ?: "/tmp") + "/binderRpcBenchmark";
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(void)unlink(addr.c_str());
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std::thread([addr]() {
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sp<RpcServer> server = RpcServer::make();
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server->setRootObject(sp<MyBinderRpcBenchmark>::make());
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server->iUnderstandThisCodeIsExperimentalAndIWillNotUseItInProduction();
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CHECK(server->setupUnixDomainServer(addr.c_str()));
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server->join();
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}).detach();
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for (size_t tries = 0; tries < 5; tries++) {
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usleep(10000);
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if (gSession->setupUnixDomainClient(addr.c_str())) goto success;
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}
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LOG(FATAL) << "Could not connect.";
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success:
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::benchmark::RunSpecifiedBenchmarks();
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return 0;
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}
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