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/**
* Copyright (C) 2021-2024 Saturneric <[email protected]>
*
* 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.
*
* All the source code of GpgFrontend was modified and released by
* Saturneric <[email protected]> starting on May 12, 2021.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "core/thread/Task.h"
#include <qscopedpointer.h>
#include "utils/MemoryUtils.h"
namespace GpgFrontend::Thread {
class Task::Impl {
public:
Impl(Task *parent, QString name)
: parent_(parent), uuid_(generate_uuid()), name_(std::move(name)) {
init();
}
Impl(Task *parent, TaskRunnable runnable, QString name,
DataObjectPtr data_object)
: parent_(parent),
uuid_(generate_uuid()),
name_(std::move(name)),
runnable_(std::move(runnable)),
callback_([](int, const DataObjectPtr &) {}),
callback_thread_(QThread::currentThread()),
data_object_(std::move(data_object)) {
init();
}
Impl(Task *parent, TaskRunnable runnable, QString name,
DataObjectPtr data_object, TaskCallback callback)
: parent_(parent),
uuid_(generate_uuid()),
name_(std::move(name)),
runnable_(std::move(runnable)),
callback_(std::move(callback)),
callback_thread_(QThread::currentThread()),
data_object_(std::move(data_object)) {
init();
}
~Impl() = default;
/**
* @brief
*
* @return QString
*/
[[nodiscard]] auto GetFullID() const -> QString {
return uuid_ + "/" + name_;
}
/**
* @brief
*
* @return QString
*/
[[nodiscard]] auto GetUUID() const -> QString { return uuid_; }
/**
* @brief
*
* @return int
*/
auto Run() -> int {
if (runnable_) return runnable_(data_object_);
return 0;
}
/**
* @brief Set the Finish After Run object
*
* @param finish_after_run
*/
void HoldOnLifeCycle(bool hold_on) { parent_->setAutoDelete(!hold_on); }
/**
* @brief
*
* @param rtn
*/
void SetRTN(int rtn) { this->rtn_ = rtn; }
/**
* @brief
*
* @return auto
*/
[[nodiscard]] auto GetRTN() const { return this->rtn_; }
private:
Task *const parent_;
const QString uuid_;
const QString name_;
TaskRunnable runnable_; ///<
TaskCallback callback_; ///<
int rtn_ = -99; ///<
QThread *callback_thread_ = nullptr; ///<
DataObjectPtr data_object_ = nullptr; ///<
void init() {
//
HoldOnLifeCycle(false);
//
connect(parent_, &Task::SignalRun, parent_, &Task::slot_exception_safe_run);
auto *callback_thread = callback_thread_ != nullptr
? callback_thread_
: QCoreApplication::instance()->thread();
//
connect(parent_, &Task::SignalTaskShouldEnd, callback_thread,
[this](int rtn) {
// set task returning code
SetRTN(rtn);
try {
if (callback_) {
callback_(rtn_, data_object_);
}
} catch (...) {
LOG_W() << "task: {}, " << GetFullID()
<< "callback caught exception, rtn: " << rtn;
}
emit parent_->SignalTaskEnd();
});
//
connect(parent_, &Task::SignalTaskEnd, parent_, &Task::deleteLater);
}
/**
* @brief
*
* @return QString
*/
static auto generate_uuid() -> QString {
return QUuid::createUuid().toString();
}
};
Task::Task(QString name) : p_(new Impl(this, name)) {}
Task::Task(TaskRunnable runnable, QString name, DataObjectPtr data_object)
: p_(SecureCreateUniqueObject<Impl>(this, runnable, name, data_object)) {}
Task::Task(TaskRunnable runnable, QString name, DataObjectPtr data_object,
TaskCallback callback)
: p_(SecureCreateUniqueObject<Impl>(this, runnable, name, data_object,
callback)) {}
Task::~Task() = default;
/**
* @brief
*
* @return QString
*/
QString Task::GetFullID() const { return p_->GetFullID(); }
QString Task::GetUUID() const { return p_->GetUUID(); }
void Task::HoldOnLifeCycle(bool hold_on) { p_->HoldOnLifeCycle(hold_on); }
void Task::setRTN(int rtn) { p_->SetRTN(rtn); }
void Task::SafelyRun() { emit SignalRun(); }
int Task::Run() { return p_->Run(); }
void Task::run() { this->SafelyRun(); }
Task::TaskHandler::TaskHandler(Task *task) : task_(task) {}
void Task::TaskHandler::Start() {
if (task_ != nullptr) task_->SafelyRun();
}
void Task::TaskHandler::Cancel() {
if (task_ != nullptr) emit task_->SignalTaskEnd();
}
auto Task::TaskHandler::GetTask() -> Task * {
if (task_ != nullptr) return task_;
return nullptr;
}
void Task::slot_exception_safe_run() noexcept {
auto rtn = p_->GetRTN();
try {
// Run() will set rtn by itself
rtn = this->Run();
} catch (...) {
LOG_W() << "exception was caught at task: {}" << GetFullID();
}
// raise signal to anounce after runnable returned
if (this->autoDelete()) emit this->SignalTaskShouldEnd(rtn);
}
auto Task::GetRTN() { return p_->GetRTN(); }
} // namespace GpgFrontend::Thread
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