afb81b8278
Some checks failed
Docker. / Ubuntu (push) Has been cancelled
User-agent updater. / User-agent (push) Failing after 15s
Lock Threads / lock (push) Failing after 10s
Waiting for answer. / waiting-for-answer (push) Failing after 22s
Close stale issues and PRs / stale (push) Successful in 13s
Needs user action. / needs-user-action (push) Failing after 8s
Can't reproduce. / cant-reproduce (push) Failing after 8s
65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
// This file is part of Desktop App Toolkit,
|
|
// a set of libraries for developing nice desktop applications.
|
|
//
|
|
// For license and copyright information please follow this link:
|
|
// https://github.com/desktop-app/legal/blob/master/LEGAL
|
|
//
|
|
#pragma once
|
|
|
|
#include <QtCore/QEvent>
|
|
#include <QtCore/QCoreApplication>
|
|
|
|
#include "base/basic_types.h"
|
|
|
|
namespace base {
|
|
|
|
class InvokeQueuedEvent : public QEvent {
|
|
public:
|
|
static auto Type() {
|
|
static const auto Result = QEvent::Type(QEvent::registerEventType());
|
|
return Result;
|
|
}
|
|
|
|
explicit InvokeQueuedEvent(FnMut<void()> &&method)
|
|
: QEvent(Type())
|
|
, _method(std::move(method)) {
|
|
}
|
|
|
|
void invoke() {
|
|
_method();
|
|
}
|
|
|
|
private:
|
|
FnMut<void()> _method;
|
|
|
|
};
|
|
|
|
} // namespace base
|
|
|
|
template <typename Lambda>
|
|
inline void InvokeQueued(const QObject *context, Lambda &&lambda) {
|
|
QCoreApplication::postEvent(
|
|
const_cast<QObject*>(context),
|
|
new base::InvokeQueuedEvent(std::forward<Lambda>(lambda)));
|
|
}
|
|
|
|
class SingleQueuedInvokation : public QObject {
|
|
public:
|
|
SingleQueuedInvokation(Fn<void()> callback) : _callback(callback) {
|
|
}
|
|
void call() {
|
|
if (_pending.testAndSetAcquire(0, 1)) {
|
|
InvokeQueued(this, [this] {
|
|
if (_pending.testAndSetRelease(1, 0)) {
|
|
_callback();
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
private:
|
|
Fn<void()> _callback;
|
|
QAtomicInt _pending = { 0 };
|
|
|
|
};
|