| /**************************************************************************** |
| ** |
| ** Copyright (C) 2018 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtBluetooth module of the Qt Toolkit. |
| ** |
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| ** |
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| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #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 |