86 lines
1.8 KiB
C++
86 lines
1.8 KiB
C++
/*
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* Deskflow -- mouse and keyboard sharing utility
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* SPDX-FileCopyrightText: (C) 2012 - 2016 Symless Ltd.
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* SPDX-FileCopyrightText: (C) 2004 Chris Schoeneman
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* SPDX-License-Identifier: GPL-2.0-only WITH LicenseRef-OpenSSL-Exception
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*/
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#include "base/SimpleEventQueueBuffer.h"
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#include "arch/Arch.h"
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#include "base/Stopwatch.h"
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class EventQueueTimer
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{
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};
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//
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// SimpleEventQueueBuffer
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//
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SimpleEventQueueBuffer::SimpleEventQueueBuffer()
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{
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m_queueMutex = ARCH->newMutex();
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m_queueReadyCond = ARCH->newCondVar();
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}
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SimpleEventQueueBuffer::~SimpleEventQueueBuffer()
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{
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ARCH->closeCondVar(m_queueReadyCond);
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ARCH->closeMutex(m_queueMutex);
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}
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void SimpleEventQueueBuffer::waitForEvent(double timeout)
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{
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ArchMutexLock lock(m_queueMutex);
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Stopwatch timer(true);
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while (!m_queueReady) {
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double timeLeft = timeout;
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if (timeLeft >= 0.0) {
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timeLeft -= timer.getTime();
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if (timeLeft < 0.0) {
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return;
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}
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}
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ARCH->waitCondVar(m_queueReadyCond, m_queueMutex, timeLeft);
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}
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}
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IEventQueueBuffer::Type SimpleEventQueueBuffer::getEvent(Event &, uint32_t &dataID)
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{
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ArchMutexLock lock(m_queueMutex);
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if (!m_queueReady) {
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return IEventQueueBuffer::Type::Unknown;
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}
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dataID = m_queue.back();
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m_queue.pop_back();
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m_queueReady = !m_queue.empty();
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return IEventQueueBuffer::Type::User;
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}
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bool SimpleEventQueueBuffer::addEvent(uint32_t dataID)
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{
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ArchMutexLock lock(m_queueMutex);
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m_queue.push_front(dataID);
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if (!m_queueReady) {
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m_queueReady = true;
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ARCH->broadcastCondVar(m_queueReadyCond);
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}
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return true;
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}
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bool SimpleEventQueueBuffer::isEmpty() const
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{
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ArchMutexLock lock(m_queueMutex);
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return !m_queueReady;
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}
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EventQueueTimer *SimpleEventQueueBuffer::newTimer(double, bool) const
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{
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return new EventQueueTimer;
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}
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void SimpleEventQueueBuffer::deleteTimer(EventQueueTimer *timer) const
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{
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delete timer;
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}
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