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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/Task.h"
#include <boost/uuid/uuid.hpp>
#include <boost/uuid/uuid_generators.hpp>
#include <boost/uuid/uuid_io.hpp>
#include <functional>
#include <string>
#include <utility>
#include "core/thread/TaskRunner.h"
const std::string GpgFrontend::Thread::Task::DEFAULT_TASK_NAME = "default-task";
GpgFrontend::Thread::Task::Task(std::string name)
: uuid_(generate_uuid()), name_(name) {
SPDLOG_TRACE("task {}/ created", GetFullID());
init();
}
GpgFrontend::Thread::Task::Task(TaskRunnable runnable, std::string name,
DataObjectPtr data_object, bool sequency)
: uuid_(generate_uuid()),
name_(name),
runnable_(std::move(runnable)),
callback_(std::move([](int, const std::shared_ptr<DataObject> &) {})),
callback_thread_(QThread::currentThread()),
data_object_(data_object),
sequency_(sequency) {
SPDLOG_TRACE("task {} created with runnable, callback_thread_: {}",
GetFullID(), static_cast<void *>(callback_thread_));
init();
}
GpgFrontend::Thread::Task::Task(TaskRunnable runnable, std::string name,
DataObjectPtr data_object,
TaskCallback callback, bool sequency)
: uuid_(generate_uuid()),
name_(name),
runnable_(std::move(runnable)),
callback_(std::move(callback)),
callback_thread_(QThread::currentThread()),
data_object_(data_object),
sequency_(sequency) {
init();
SPDLOG_TRACE(
"task {} created with runnable and callback, callback_thread_: {}",
GetFullID(), static_cast<void *>(callback_thread_));
}
GpgFrontend::Thread::Task::~Task() {
SPDLOG_TRACE("task {} destroyed", GetFullID());
}
/**
* @brief
*
* @return std::string
*/
std::string GpgFrontend::Thread::Task::GetFullID() const {
return uuid_ + "/" + name_;
}
std::string GpgFrontend::Thread::Task::GetUUID() const { return uuid_; }
bool GpgFrontend::Thread::Task::GetSequency() const { return sequency_; }
void GpgFrontend::Thread::Task::HoldOnLifeCycle(bool hold_on) {
this->run_callback_after_runnable_finished_ = !hold_on;
}
void GpgFrontend::Thread::Task::SetRTN(int rtn) { this->rtn_ = rtn; }
void GpgFrontend::Thread::Task::init() {
// after runnable finished, running callback
connect(this, &Task::SignalTaskRunnableEnd, this,
&Task::slot_task_run_callback);
}
void GpgFrontend::Thread::Task::slot_task_run_callback(int rtn) {
SPDLOG_TRACE("task runnable {} finished, rtn: {}", GetFullID(), rtn);
// set return value
this->SetRTN(rtn);
try {
if (callback_) {
if (callback_thread_ == QThread::currentThread()) {
SPDLOG_DEBUG("callback thread is the same thread");
if (!QMetaObject::invokeMethod(callback_thread_,
[callback = callback_, rtn = rtn_,
data_object = data_object_, this]() {
callback(rtn, data_object);
// do cleaning work
emit SignalTaskEnd();
})) {
SPDLOG_ERROR("failed to invoke callback");
}
// just finished, let callack thread to raise SignalTaskEnd
return;
} else {
// waiting for callback to finish
if (!QMetaObject::invokeMethod(
callback_thread_,
[callback = callback_, rtn = rtn_,
data_object = data_object_]() { callback(rtn, data_object); },
Qt::BlockingQueuedConnection)) {
SPDLOG_ERROR("failed to invoke callback");
}
}
}
} catch (std::exception &e) {
SPDLOG_ERROR("exception caught: {}", e.what());
} catch (...) {
SPDLOG_ERROR("unknown exception caught");
}
// raise signal, announcing this task come to an end
SPDLOG_DEBUG("task {}, starting calling signal SignalTaskEnd", GetFullID());
emit SignalTaskEnd();
}
void GpgFrontend::Thread::Task::run() {
SPDLOG_TRACE("task {} starting", GetFullID());
// build runnable package for running
auto runnable_package = [=, id = GetFullID()]() {
SPDLOG_DEBUG("task {} runnable start runing", id);
// Run() will set rtn by itself
Run();
// raise signal to anounce after runnable returned
if (run_callback_after_runnable_finished_) emit SignalTaskRunnableEnd(rtn_);
};
if (thread() != QThread::currentThread()) {
SPDLOG_DEBUG("task running thread is not object living thread");
// if running sequently
if (sequency_) {
// running in another thread, blocking until returned
if (!QMetaObject::invokeMethod(thread(), runnable_package,
Qt::BlockingQueuedConnection)) {
SPDLOG_ERROR("qt invoke method failed");
}
} else {
// running in another thread, non-blocking
if (!QMetaObject::invokeMethod(thread(), runnable_package)) {
SPDLOG_ERROR("qt invoke method failed");
}
}
} else {
if (!QMetaObject::invokeMethod(this, runnable_package)) {
SPDLOG_ERROR("qt invoke method failed");
}
}
}
void GpgFrontend::Thread::Task::SlotRun() { run(); }
void GpgFrontend::Thread::Task::Run() {
if (runnable_) {
SetRTN(runnable_(data_object_));
} else {
SPDLOG_WARN("no runnable in task, do callback operation");
}
}
GpgFrontend::Thread::Task::DataObject::Destructor *
GpgFrontend::Thread::Task::DataObject::get_heap_ptr(size_t bytes_size) {
Destructor *dstr_ptr = new Destructor();
dstr_ptr->p_obj = malloc(bytes_size);
return dstr_ptr;
}
GpgFrontend::Thread::Task::DataObject::~DataObject() {
if (!data_objects_.empty())
SPDLOG_WARN("data_objects_ is not empty",
"address:", static_cast<void *>(this));
while (!data_objects_.empty()) {
free_heap_ptr(data_objects_.top());
data_objects_.pop();
}
}
size_t GpgFrontend::Thread::Task::DataObject::GetObjectSize() {
return data_objects_.size();
}
void GpgFrontend::Thread::Task::DataObject::free_heap_ptr(Destructor *ptr) {
SPDLOG_TRACE("p_obj: {} data object: {}",
static_cast<const void *>(ptr->p_obj),
static_cast<void *>(this));
if (ptr->destroy != nullptr) {
ptr->destroy(ptr->p_obj);
}
free(const_cast<void *>(ptr->p_obj));
delete ptr;
}
std::string GpgFrontend::Thread::Task::generate_uuid() {
return boost::uuids::to_string(boost::uuids::random_generator()());
}
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