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/*
* Copyright 2014 Daniel Vrátil <dvratil@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This library 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "async.h"
#include <QCoreApplication>
#include <QDebug>
#include <QEventLoop>
#include <QTimer>
using namespace Async;
Private::Execution::Execution(const Private::ExecutorBasePtr &executor)
: executor(executor)
, resultBase(nullptr)
, isRunning(false)
, isFinished(false)
{
}
Private::Execution::~Execution()
{
if (resultBase) {
resultBase->releaseExecution();
delete resultBase;
}
prevExecution.reset();
}
void Private::Execution::setFinished()
{
isFinished = true;
//executor.clear();
#ifndef QT_NO_DEBUG
if (tracer) {
delete tracer;
}
#endif
}
void Private::Execution::releaseFuture()
{
resultBase = 0;
}
bool Private::Execution::errorWasHandled() const
{
Execution *exec = const_cast<Execution*>(this);
while (exec) {
if (exec->executor->hasErrorFunc()) {
return true;
}
exec = exec->prevExecution.data();
}
return false;
}
Private::ExecutorBase::ExecutorBase(const ExecutorBasePtr &parent)
: mPrev(parent)
{
}
Private::ExecutorBase::~ExecutorBase()
{
}
JobBase::JobBase(const Private::ExecutorBasePtr &executor)
: mExecutor(executor)
{
}
JobBase::~JobBase()
{
}
static void asyncWhile(const std::function<void(std::function<void(bool)>)> &body, const std::function<void()> &completionHandler) {
body([body, completionHandler](bool complete) {
if (complete) {
completionHandler();
} else {
asyncWhile(body, completionHandler);
}
});
}
Job<void> Async::dowhile(Condition condition, ThenTask<void> body)
{
return Async::start<void>([body, condition](Async::Future<void> &future) {
asyncWhile([condition, body](std::function<void(bool)> whileCallback) {
Async::start<void>(body).then<void>([whileCallback, condition]() {
whileCallback(!condition());
}).exec();
},
[&future]() { //while complete
future.setFinished();
});
});
}
Job<void> Async::dowhile(ThenTask<bool> body)
{
return Async::start<void>([body](Async::Future<void> &future) {
asyncWhile([body](std::function<void(bool)> whileCallback) {
Async::start<bool>(body).then<bool, bool>([whileCallback](bool result) {
whileCallback(!result);
//FIXME this return value is only required because .then<bool, void> doesn't work
return true;
}).exec();
},
[&future]() { //while complete
future.setFinished();
});
});
}
Job<void> Async::wait(int delay)
{
auto timer = QSharedPointer<QTimer>::create();
return Async::start<void>([timer, delay](Async::Future<void> &future) {
timer->setSingleShot(true);
QObject::connect(timer.data(), &QTimer::timeout, [&future]() {
future.setFinished();
});
timer->start(delay);
});
}
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