296 lines
8.1 KiB
C++
296 lines
8.1 KiB
C++
#include <hex/api/task.hpp>
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#include <hex/api/localization.hpp>
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#include <hex/helpers/logger.hpp>
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#include <algorithm>
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#include <ranges>
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namespace hex {
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std::mutex TaskManager::s_deferredCallsMutex, TaskManager::s_tasksFinishedMutex;
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std::list<std::shared_ptr<Task>> TaskManager::s_tasks, TaskManager::s_taskQueue;
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std::list<std::function<void()>> TaskManager::s_deferredCalls;
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std::list<std::function<void()>> TaskManager::s_tasksFinishedCallbacks;
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std::mutex TaskManager::s_queueMutex;
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std::condition_variable TaskManager::s_jobCondVar;
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std::vector<std::jthread> TaskManager::s_workers;
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Task::Task(std::string unlocalizedName, u64 maxValue, bool background, std::function<void(Task &)> function)
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: m_unlocalizedName(std::move(unlocalizedName)), m_currValue(0), m_maxValue(maxValue), m_function(std::move(function)), m_background(background) { }
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Task::Task(hex::Task &&other) noexcept {
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{
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std::scoped_lock thisLock(this->m_mutex);
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std::scoped_lock otherLock(other.m_mutex);
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this->m_function = std::move(other.m_function);
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this->m_unlocalizedName = std::move(other.m_unlocalizedName);
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}
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this->m_maxValue = u64(other.m_maxValue);
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this->m_currValue = u64(other.m_currValue);
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this->m_finished = bool(other.m_finished);
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this->m_hadException = bool(other.m_hadException);
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this->m_interrupted = bool(other.m_interrupted);
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this->m_shouldInterrupt = bool(other.m_shouldInterrupt);
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}
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Task::~Task() {
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if (!this->isFinished())
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this->interrupt();
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}
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void Task::update(u64 value) {
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this->m_currValue = value;
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if (this->m_shouldInterrupt)
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throw TaskInterruptor();
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}
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void Task::setMaxValue(u64 value) {
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this->m_maxValue = value;
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}
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void Task::interrupt() {
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this->m_shouldInterrupt = true;
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if (this->m_interruptCallback)
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this->m_interruptCallback();
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}
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void Task::setInterruptCallback(std::function<void()> callback) {
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this->m_interruptCallback = std::move(callback);
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}
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bool Task::isBackgroundTask() const {
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return this->m_background;
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}
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bool Task::isFinished() const {
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return this->m_finished;
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}
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bool Task::hadException() const {
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return this->m_hadException;
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}
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bool Task::shouldInterrupt() const {
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return this->m_shouldInterrupt;
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}
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bool Task::wasInterrupted() const {
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return this->m_interrupted;
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}
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void Task::clearException() {
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this->m_hadException = false;
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}
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std::string Task::getExceptionMessage() const {
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std::scoped_lock lock(this->m_mutex);
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return this->m_exceptionMessage;
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}
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const std::string &Task::getUnlocalizedName() {
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return this->m_unlocalizedName;
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}
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u64 Task::getValue() const {
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return this->m_currValue;
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}
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u64 Task::getMaxValue() const {
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return this->m_maxValue;
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}
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void Task::finish() {
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this->m_finished = true;
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}
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void Task::interruption() {
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this->m_interrupted = true;
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}
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void Task::exception(const char *message) {
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std::scoped_lock lock(this->m_mutex);
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this->m_exceptionMessage = message;
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this->m_hadException = true;
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}
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bool TaskHolder::isRunning() const {
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if (this->m_task.expired())
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return false;
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auto task = this->m_task.lock();
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return !task->isFinished();
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}
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bool TaskHolder::hadException() const {
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if (this->m_task.expired())
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return false;
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auto task = this->m_task.lock();
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return !task->hadException();
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}
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bool TaskHolder::shouldInterrupt() const {
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if (this->m_task.expired())
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return false;
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auto task = this->m_task.lock();
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return !task->shouldInterrupt();
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}
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bool TaskHolder::wasInterrupted() const {
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if (this->m_task.expired())
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return false;
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auto task = this->m_task.lock();
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return !task->wasInterrupted();
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}
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void TaskHolder::interrupt() {
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if (this->m_task.expired())
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return;
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auto task = this->m_task.lock();
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task->interrupt();
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}
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void TaskManager::init() {
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for (u32 i = 0; i < std::thread::hardware_concurrency(); i++)
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TaskManager::s_workers.emplace_back(TaskManager::runner);
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}
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void TaskManager::exit() {
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for (auto &task : TaskManager::s_tasks)
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task->interrupt();
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for (auto &thread : TaskManager::s_workers)
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thread.request_stop();
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s_jobCondVar.notify_all();
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TaskManager::s_workers.clear();
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}
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void TaskManager::runner(const std::stop_token &stopToken) {
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std::mutex mutex;
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while (true) {
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std::shared_ptr<Task> task;
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{
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std::unique_lock lock(s_queueMutex);
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s_jobCondVar.wait(lock, [&] {
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return !s_taskQueue.empty() || stopToken.stop_requested();
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});
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if (stopToken.stop_requested())
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break;
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task = std::move(s_taskQueue.front());
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s_taskQueue.pop_front();
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}
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try {
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task->m_function(*task);
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} catch (const Task::TaskInterruptor &) {
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task->interruption();
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} catch (const std::exception &e) {
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log::error("Exception in task {}: {}", task->m_unlocalizedName, e.what());
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task->exception(e.what());
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} catch (...) {
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log::error("Exception in task {}", task->m_unlocalizedName);
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task->exception("Unknown Exception");
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}
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task->finish();
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}
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}
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TaskHolder TaskManager::createTask(std::string name, u64 maxValue, std::function<void(Task &)> function) {
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std::unique_lock lock(s_queueMutex);
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auto task = std::make_shared<Task>(std::move(name), maxValue, false, std::move(function));
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s_tasks.emplace_back(task);
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s_taskQueue.emplace_back(task);
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s_jobCondVar.notify_one();
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return TaskHolder(s_tasks.back());
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}
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TaskHolder TaskManager::createBackgroundTask(std::string name, std::function<void(Task &)> function) {
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std::unique_lock lock(s_queueMutex);
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auto task = std::make_shared<Task>(std::move(name), 0, true, std::move(function));
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s_tasks.emplace_back(task);
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s_taskQueue.emplace_back(task);
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s_jobCondVar.notify_one();
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return TaskHolder(s_tasks.back());
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}
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void TaskManager::collectGarbage() {
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std::unique_lock lock1(s_queueMutex);
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std::unique_lock lock2(s_deferredCallsMutex);
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std::erase_if(s_tasks, [](const auto &task) { return task->isFinished() && !task->hadException(); });
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if (s_tasks.empty()) {
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for (auto &call : s_tasksFinishedCallbacks)
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call();
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s_tasksFinishedCallbacks.clear();
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}
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}
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std::list<std::shared_ptr<Task>> &TaskManager::getRunningTasks() {
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return s_tasks;
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}
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size_t TaskManager::getRunningTaskCount() {
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std::unique_lock lock(s_queueMutex);
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return std::count_if(s_tasks.begin(), s_tasks.end(), [](const auto &task){
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return !task->isBackgroundTask();
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});
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}
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size_t TaskManager::getRunningBackgroundTaskCount() {
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std::unique_lock lock(s_queueMutex);
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return std::count_if(s_tasks.begin(), s_tasks.end(), [](const auto &task){
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return task->isBackgroundTask();
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});
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}
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void TaskManager::doLater(const std::function<void()> &function) {
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std::scoped_lock lock(s_deferredCallsMutex);
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s_deferredCalls.push_back(function);
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}
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void TaskManager::runDeferredCalls() {
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std::scoped_lock lock(s_deferredCallsMutex);
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for (const auto &call : s_deferredCalls)
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call();
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s_deferredCalls.clear();
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}
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void TaskManager::runWhenTasksFinished(const std::function<void()> &function) {
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std::scoped_lock lock(s_tasksFinishedMutex);
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s_tasksFinishedCallbacks.push_back(function);
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}
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} |