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/*
* Copyright 2018 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 <aidl/android/system/suspend/internal/ISuspendControlServiceInternal.h>
#include <android/binder_manager.h>
#include <gtest/gtest.h>
#include <hardware_legacy/power.h>
#include <wakelock/wakelock.h>
#include <csignal>
#include <cstdlib>
#include <memory>
#include <string>
#include <thread>
#include <vector>
using aidl::android::system::suspend::internal::ISuspendControlServiceInternal;
using aidl::android::system::suspend::internal::WakeLockInfo;
using namespace std::chrono_literals;
namespace android {
// Test acquiring/releasing WakeLocks concurrently with process exit.
TEST(LibpowerTest, ProcessExitTest) {
std::atexit([] {
// We want to give the other thread enough time trigger a failure and
// dump the stack traces.
std::this_thread::sleep_for(1s);
});
ASSERT_EXIT(
{
constexpr int numThreads = 20;
std::vector<std::thread> tds;
for (int i = 0; i < numThreads; i++) {
tds.emplace_back([] {
while (true) {
// We want ids to be unique.
std::string id = std::to_string(rand());
ASSERT_EQ(acquire_wake_lock(PARTIAL_WAKE_LOCK, id.c_str()), 0);
ASSERT_EQ(release_wake_lock(id.c_str()), 0);
}
});
}
for (auto& td : tds) {
td.detach();
}
// Give some time for the threads to actually start.
std::this_thread::sleep_for(100ms);
std::exit(0);
},
::testing::ExitedWithCode(0), "");
}
// Stress test acquiring/releasing WakeLocks.
TEST(LibpowerTest, WakeLockStressTest) {
// numThreads threads will acquire/release numLocks locks each.
constexpr int numThreads = 20;
constexpr int numLocks = 1000;
std::vector<std::thread> tds;
for (int i = 0; i < numThreads; i++) {
tds.emplace_back([i] {
for (int j = 0; j < numLocks; j++) {
// We want ids to be unique.
std::string id = std::to_string(i) + "/" + std::to_string(j);
ASSERT_EQ(acquire_wake_lock(PARTIAL_WAKE_LOCK, id.c_str()), 0)
<< "id: " << id;
ASSERT_EQ(release_wake_lock(id.c_str()), 0)
<< "id: " << id;;
}
});
}
for (auto& td : tds) {
td.join();
}
}
class WakeLockTest : public ::testing::Test {
public:
virtual void SetUp() override {
ndk::SpAIBinder binder(AServiceManager_waitForService("suspend_control_internal"));
controlService = ISuspendControlServiceInternal::fromBinder(binder);
ASSERT_NE(controlService, nullptr) << "failed to get the internal suspend control service";
}
// Returns true iff found.
bool findWakeLockInfoByName(const std::string& name,
WakeLockInfo* info) {
std::vector<WakeLockInfo> wlStats;
controlService->getWakeLockStats(&wlStats);
auto it = std::find_if(wlStats.begin(), wlStats.end(),
[&name](const auto& x) { return x.name == name; });
if (it != wlStats.end()) {
*info = *it;
return true;
}
return false;
}
// All userspace wake locks are registered with system suspend.
std::shared_ptr<ISuspendControlServiceInternal> controlService;
};
// Test RAII properties of WakeLock destructor.
TEST_F(WakeLockTest, WakeLockDestructor) {
auto name = std::to_string(rand());
{
auto wl = android::wakelock::WakeLock::tryGet(name);
if (!wl.has_value()) {
return;
}
WakeLockInfo info;
auto success = findWakeLockInfoByName(name, &info);
ASSERT_TRUE(success);
ASSERT_EQ(info.name, name);
ASSERT_EQ(info.pid, getpid());
ASSERT_TRUE(info.isActive);
}
// SystemSuspend receives wake lock release requests on hwbinder thread, while stats requests
// come on binder thread. Sleep to make sure that stats are reported *after* wake lock release.
std::this_thread::sleep_for(1ms);
WakeLockInfo info;
auto success = findWakeLockInfoByName(name, &info);
ASSERT_TRUE(success);
ASSERT_EQ(info.name, name);
ASSERT_EQ(info.pid, getpid());
ASSERT_FALSE(info.isActive);
}
} // namespace android
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