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/*
* Copyright (C) 2023 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 <gtest/gtest.h>
#include <sys/syscall.h>
#include <chrono>
#include <mutex>
#include <thread>
#include <unordered_map>
#include <vector>
// define private as public to expose the private members for test.
#define private public
#include "aidl/PowerHintSession.h"
#include "aidl/PowerSessionManager.h"
#define gettid() syscall(SYS_gettid)
using std::literals::chrono_literals::operator""ms;
using std::literals::chrono_literals::operator""ns;
using std::literals::chrono_literals::operator""s;
namespace aidl {
namespace google {
namespace hardware {
namespace power {
namespace impl {
namespace pixel {
class PowerHintSessionTest : public ::testing::Test {
public:
void SetUp() {
// create a list of threads
for (int i = 0; i < numOfThreads; i++) {
threadIsAlive.emplace_back(true);
threadList.emplace_back(std::thread([this, threadInd = i]() {
ALOGI("Test thread %d is running.", (int32_t)gettid());
{
std::lock_guard<std::mutex> lock(m);
threadIds[threadInd] = gettid();
}
while (threadIsAlive[threadInd]) {
std::this_thread::sleep_for(50ms);
}
ALOGI("Test thread %d is closed.", (int32_t)gettid());
}));
}
std::this_thread::sleep_for(50ms);
// create two hint sessions
for (int i = 0; i < numOfThreads; i++) {
if (i <= numOfThreads / 2) {
session1Threads.emplace_back(threadIds[i]);
}
if (i >= numOfThreads / 2) {
session2Threads.emplace_back(threadIds[i]);
}
}
sess1 = ndk::SharedRefBase::make<PowerHintSession>(1, 1, session1Threads, 1000000);
sess2 = ndk::SharedRefBase::make<PowerHintSession>(2, 2, session2Threads, 1000000);
}
void TearDown() {
for (int i = 0; i < numOfThreads; i++) {
if (threadIsAlive[i]) {
threadIsAlive[i] = false;
threadList[i].join();
}
}
threadList.clear();
threadIds.clear();
threadIsAlive.clear();
session1Threads.clear();
session2Threads.clear();
}
protected:
static const int numOfThreads = 3;
std::vector<std::thread> threadList;
std::unordered_map<int, int32_t> threadIds;
std::vector<bool> threadIsAlive;
std::mutex m;
std::vector<int32_t> session1Threads;
std::vector<int32_t> session2Threads;
std::shared_ptr<PowerHintSession> sess1;
std::shared_ptr<PowerHintSession> sess2;
// close the i-th thread in thread list.
void closeThread(int i) {
if (i < 0 || i >= numOfThreads)
return;
if (threadIsAlive[i]) {
threadIsAlive[i] = false;
threadList[i].join();
}
}
};
TEST_F(PowerHintSessionTest, removeDeadThread) {
ALOGI("Running dead thread test for hint sessions.");
auto sessManager = sess1->mPSManager;
ASSERT_EQ(2, sessManager->mSessionTaskMap.mSessions.size());
// The sessions' thread list doesn't change after thread died until the uclamp
// min update is triggered.
int deadThreadInd = numOfThreads / 2;
auto deadThreadID = threadIds[deadThreadInd];
closeThread(deadThreadInd);
ASSERT_EQ(sessManager->mSessionTaskMap.mSessions[sess1->mSessionId].linkedTasks,
session1Threads);
ASSERT_EQ(sessManager->mSessionTaskMap.mSessions[sess2->mSessionId].linkedTasks,
session2Threads);
ASSERT_EQ(sessManager->mSessionTaskMap.mTasks[deadThreadID].size(), 2);
// Trigger an update of uclamp min.
auto tNow = std::chrono::duration_cast<std::chrono::nanoseconds>(
std::chrono::high_resolution_clock::now().time_since_epoch())
.count();
WorkDuration wDur(tNow, 1100000);
sess1->reportActualWorkDuration(std::vector<WorkDuration>{wDur});
ASSERT_EQ(sessManager->mSessionTaskMap.mTasks[deadThreadID].size(), 1);
sess2->reportActualWorkDuration(std::vector<WorkDuration>{wDur});
ASSERT_EQ(sessManager->mSessionTaskMap.mTasks.count(deadThreadID), 0);
std::erase(session1Threads, deadThreadID);
std::erase(session2Threads, deadThreadID);
ASSERT_EQ(sessManager->mSessionTaskMap.mSessions[sess1->mSessionId].linkedTasks,
session1Threads);
ASSERT_EQ(sessManager->mSessionTaskMap.mSessions[sess2->mSessionId].linkedTasks,
session2Threads);
// Close all the threads in session 1.
for (int i = 0; i <= numOfThreads / 2; i++) {
closeThread(i);
}
tNow = std::chrono::duration_cast<std::chrono::nanoseconds>(
std::chrono::high_resolution_clock::now().time_since_epoch())
.count();
sess1->reportActualWorkDuration(std::vector<WorkDuration>{wDur});
ASSERT_EQ(2, sessManager->mSessionTaskMap.mSessions.size()); // Session still alive
ASSERT_EQ(sessManager->mSessionTaskMap.mSessions[sess1->mSessionId].linkedTasks.size(), 0);
}
TEST_F(PowerHintSessionTest, setThreads) {
auto sessManager = sess1->mPSManager;
ASSERT_EQ(2, sessManager->mSessionTaskMap.mSessions.size());
ASSERT_EQ(sessManager->mSessionTaskMap.mSessions[sess1->mSessionId].linkedTasks,
session1Threads);
std::vector<int32_t> newSess1Threads;
for (auto tid : threadIds) {
newSess1Threads.emplace_back(tid.second);
}
sess1->setThreads(newSess1Threads);
ASSERT_EQ(sessManager->mSessionTaskMap.mSessions[sess1->mSessionId].linkedTasks,
newSess1Threads);
sess1->close();
sess2->close();
}
} // namespace pixel
} // namespace impl
} // namespace power
} // namespace hardware
} // namespace google
} // namespace aidl
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