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/**
* Copyright (C) 2021 Saturneric
*
* This file is part of GpgFrontend.
*
* GpgFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GpgFrontend is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from
* the gpg4usb project, which is under GPL-3.0-or-later.
*
* The source code version of this software was modified and released
* by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
*
*/
#include "core/thread/TaskRunner.h"
#include <exception>
#include "core/thread/Task.h"
#include "easylogging++.h"
GpgFrontend::Thread::TaskRunner::TaskRunner() = default;
GpgFrontend::Thread::TaskRunner::~TaskRunner() = default;
void GpgFrontend::Thread::TaskRunner::PostTask(Task* task) {
LOG(TRACE) << "Post Task" << task->GetUUID();
if (task == nullptr) return;
task->setParent(nullptr);
task->moveToThread(this);
connect(task, &Task::SignalTaskPostFinishedDone, this, [=]() {
auto it = pending_tasks_.find(task->GetUUID());
if (it == pending_tasks_.end()) {
LOG(ERROR) << "Task" << task->GetUUID() << "not found in pending tasks";
return;
} else {
LOG(TRACE) << "Task" << task->GetUUID() << "found in pending tasks";
it->second->deleteLater();
pending_tasks_.erase(it);
}
});
{
std::lock_guard<std::mutex> lock(tasks_mutex_);
tasks.push(task);
}
quit();
}
void GpgFrontend::Thread::TaskRunner::run() {
LOG(TRACE) << "called"
<< "thread id:" << QThread::currentThreadId();
while (true) {
LOG(TRACE) << "TaskRunner: A new cycle start";
if (tasks.empty()) {
LOG(TRACE) << "TaskRunner: No tasks to run, trapping into event loop...";
exec();
} else {
LOG(TRACE) << "TaskRunner: Task queue size:" << tasks.size();
Task* task = nullptr;
{
std::lock_guard<std::mutex> lock(tasks_mutex_);
task = std::move(tasks.front());
tasks.pop();
pending_tasks_.insert({task->GetUUID(), task});
}
if (task != nullptr) {
// Run the task
LOG(TRACE) << "TaskRunner: Running Task" << task->GetUUID();
try {
task->run();
} catch (const std::exception& e) {
LOG(ERROR) << "TaskRunner: Exception in Task" << task->GetUUID()
<< "Exception: " << e.what();
// destroy the task, remove the task from the pending tasks
task->deleteLater();
pending_tasks_.erase(task->GetUUID());
} catch (...) {
LOG(ERROR) << "TaskRunner: Unknwon Exception in Task"
<< task->GetUUID();
// destroy the task, remove the task from the pending tasks
task->deleteLater();
pending_tasks_.erase(task->GetUUID());
}
}
}
}
}
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