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102 lines
2.4 KiB
C++
102 lines
2.4 KiB
C++
/*
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* synergy -- mouse and keyboard sharing utility
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* Copyright (C) 2012-2016 Symless Ltd.
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* Copyright (C) 2004 Chris Schoeneman
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file LICENSE that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "base/SimpleEventQueueBuffer.h"
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#include "base/Stopwatch.h"
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#include "arch/Arch.h"
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class EventQueueTimer { };
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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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m_queueReady = false;
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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
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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
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SimpleEventQueueBuffer::getEvent(Event&, UInt32& 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 kNone;
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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 kUser;
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}
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bool
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SimpleEventQueueBuffer::addEvent(UInt32 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
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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*
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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
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SimpleEventQueueBuffer::deleteTimer(EventQueueTimer* timer) const
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{
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delete timer;
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}
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