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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include "osxbtgcdtimer_p.h"
#include "osxbtutility_p.h"
#include <QtCore/qdebug.h>
#include <algorithm>
QT_USE_NAMESPACE
using namespace OSXBluetooth;
@implementation QT_MANGLE_NAMESPACE(OSXBTGCDTimer) {
@private
qint64 timeoutMS;
qint64 timeoutStepMS;
// Optional:
id objectUnderWatch;
OperationTimeout timeoutType;
QElapsedTimer timer;
id<QT_MANGLE_NAMESPACE(GCDTimerDelegate)> timeoutHandler;
bool cancelled;
}
- (instancetype)initWithDelegate:(id<QT_MANGLE_NAMESPACE(GCDTimerDelegate)>)delegate
{
if (self = [super init]) {
timeoutHandler = delegate;
timeoutMS = 0;
timeoutStepMS = 0;
objectUnderWatch = nil;
timeoutType = OperationTimeout::none;
cancelled = false;
}
return self;
}
- (void)watchAfter:(id)object withTimeoutType:(OperationTimeout)type
{
objectUnderWatch = object;
timeoutType = type;
}
- (void)startWithTimeout:(qint64)ms step:(qint64)stepMS
{
Q_ASSERT(!timeoutMS && !timeoutStepMS);
Q_ASSERT(!cancelled);
if (!timeoutHandler) {
// Nobody to report timeout to, no need to start any task then.
return;
}
if (ms <= 0 || stepMS <= 0) {
qCWarning(QT_BT_OSX, "Invalid timeout/step parameters");
return;
}
timeoutMS = ms;
timeoutStepMS = stepMS;
timer.start();
[self handleTimeout];
}
- (void)handleTimeout
{
if (cancelled)
return;
const qint64 elapsed = timer.elapsed();
if (elapsed >= timeoutMS) {
[timeoutHandler timeout:self];
} else {
// Re-schedule:
dispatch_queue_t leQueue(qt_LE_queue());
Q_ASSERT(leQueue);
const qint64 timeChunkMS = std::min(timeoutMS - elapsed, timeoutStepMS);
dispatch_after(dispatch_time(DISPATCH_TIME_NOW,
int64_t(timeChunkMS / 1000. * NSEC_PER_SEC)),
leQueue,
^{
[self handleTimeout];
});
}
}
- (void)cancelTimer
{
cancelled = true;
timeoutHandler = nil;
objectUnderWatch = nil;
timeoutType = OperationTimeout::none;
}
- (id)objectUnderWatch
{
return objectUnderWatch;
}
- (OperationTimeout)timeoutType
{
return timeoutType;
}
@end
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