ca0b45a15e
We use "-Wexit-time-destructors" and "-fno-c++-static-destructors" flags to make sure that no static variables are destroyed at exit time. We do this to avoid the race condition between process exit and use of static vars when calling acquire/release_wake_lock(). Bug: 117575503 Test: libpower_test Change-Id: I16acfeb2412685e376d8bd1069c86f60f56d215a
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/*
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* Copyright 2018 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 <hardware_legacy/power.h>
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#include <csignal>
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#include <cstdlib>
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#include <string>
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#include <thread>
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#include <vector>
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#include <gtest/gtest.h>
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using namespace std::chrono_literals;
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namespace android {
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// Test acquiring/releasing WakeLocks concurrently with process exit.
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TEST(LibpowerTest, ProcessExitTest) {
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std::atexit([] {
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// We want to give the other thread enough time trigger a failure and
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// dump the stack traces.
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std::this_thread::sleep_for(1s);
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});
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ASSERT_EXIT(
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{
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constexpr int numThreads = 20;
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std::vector<std::thread> tds;
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for (int i = 0; i < numThreads; i++) {
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tds.emplace_back([] {
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while (true) {
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// We want ids to be unique.
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std::string id = std::to_string(rand());
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ASSERT_EQ(acquire_wake_lock(PARTIAL_WAKE_LOCK, id.c_str()), 0);
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ASSERT_EQ(release_wake_lock(id.c_str()), 0);
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}
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});
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}
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for (auto& td : tds) {
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td.detach();
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}
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// Give some time for the threads to actually start.
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std::this_thread::sleep_for(100ms);
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std::exit(0);
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},
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::testing::ExitedWithCode(0), "");
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}
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// Stress test acquiring/releasing WakeLocks.
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TEST(LibpowerTest, WakeLockStressTest) {
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// numThreads threads will acquire/release numLocks locks each.
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constexpr int numThreads = 20;
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constexpr int numLocks = 1000;
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std::vector<std::thread> tds;
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for (int i = 0; i < numThreads; i++) {
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tds.emplace_back([i] {
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for (int j = 0; j < numLocks; j++) {
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// We want ids to be unique.
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std::string id = std::to_string(i) + "/" + std::to_string(j);
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ASSERT_EQ(acquire_wake_lock(PARTIAL_WAKE_LOCK, id.c_str()), 0);
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ASSERT_EQ(release_wake_lock(id.c_str()), 0);
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}
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});
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}
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for (auto& td : tds) {
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td.join();
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}
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}
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} // namespace android
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