| /*************************************************************************** |
| ** |
| ** Copyright (C) 2017 QNX Software Systems. All rights reserved. |
| ** Copyright (C) 2011 - 2012 Research In Motion |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the plugins of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** 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 |
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| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** 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 |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qqnxglobal.h" |
| |
| #include "qqnxscreeneventthread.h" |
| #include "qqnxscreeneventhandler.h" |
| |
| #include <QtCore/QDebug> |
| |
| #include <errno.h> |
| #include <unistd.h> |
| |
| #include <cctype> |
| |
| #if defined(QQNXSCREENEVENTTHREAD_DEBUG) |
| #define qScreenEventThreadDebug qDebug |
| #else |
| #define qScreenEventThreadDebug QT_NO_QDEBUG_MACRO |
| #endif |
| |
| static const int c_screenCode = _PULSE_CODE_MINAVAIL + 0; |
| static const int c_armCode = _PULSE_CODE_MINAVAIL + 1; |
| static const int c_quitCode = _PULSE_CODE_MINAVAIL + 2; |
| |
| #if !defined(screen_register_event) |
| int screen_register_event(screen_context_t, struct sigevent *event) |
| { |
| return MsgRegisterEvent(event, -1); |
| } |
| |
| int screen_unregister_event(struct sigevent *event) |
| { |
| return MsgUnregisterEvent(event); |
| } |
| #endif |
| |
| QQnxScreenEventThread::QQnxScreenEventThread(screen_context_t context) |
| : QThread() |
| , m_screenContext(context) |
| { |
| m_channelId = ChannelCreate(_NTO_CHF_DISCONNECT | _NTO_CHF_UNBLOCK | _NTO_CHF_PRIVATE); |
| if (m_channelId == -1) { |
| qFatal("QQnxScreenEventThread: Can't continue without a channel"); |
| } |
| |
| m_connectionId = ConnectAttach(0, 0, m_channelId, _NTO_SIDE_CHANNEL, 0); |
| if (m_connectionId == -1) { |
| ChannelDestroy(m_channelId); |
| qFatal("QQnxScreenEventThread: Can't continue without a channel connection"); |
| } |
| |
| SIGEV_PULSE_INIT(&m_screenEvent, m_connectionId, SIGEV_PULSE_PRIO_INHERIT, c_screenCode, 0); |
| if (screen_register_event(m_screenContext, &m_screenEvent) == -1) { |
| ConnectDetach(m_connectionId); |
| ChannelDestroy(m_channelId); |
| qFatal("QQnxScreenEventThread: Can't continue without a registered event"); |
| } |
| |
| screen_notify(m_screenContext, SCREEN_NOTIFY_EVENT, nullptr, &m_screenEvent); |
| } |
| |
| QQnxScreenEventThread::~QQnxScreenEventThread() |
| { |
| // block until thread terminates |
| shutdown(); |
| |
| screen_notify(m_screenContext, SCREEN_NOTIFY_EVENT, nullptr, nullptr); |
| screen_unregister_event(&m_screenEvent); |
| ConnectDetach(m_connectionId); |
| ChannelDestroy(m_channelId); |
| } |
| |
| void QQnxScreenEventThread::run() |
| { |
| qScreenEventThreadDebug("screen event thread started"); |
| |
| while (1) { |
| struct _pulse msg; |
| memset(&msg, 0, sizeof(msg)); |
| int receiveId = MsgReceive(m_channelId, &msg, sizeof(msg), nullptr); |
| if (receiveId == 0 && msg.code == c_quitCode) |
| break; |
| else if (receiveId == 0) |
| handlePulse(msg); |
| else if (receiveId > 0) |
| qWarning() << "Unexpected message" << msg.code; |
| else |
| qWarning() << "MsgReceive error" << strerror(errno); |
| } |
| |
| qScreenEventThreadDebug("screen event thread stopped"); |
| } |
| |
| void QQnxScreenEventThread::armEventsPending(int count) |
| { |
| MsgSendPulse(m_connectionId, SIGEV_PULSE_PRIO_INHERIT, c_armCode, count); |
| } |
| |
| void QQnxScreenEventThread::handleScreenPulse(const struct _pulse &msg) |
| { |
| Q_UNUSED(msg); |
| |
| ++m_screenPulsesSinceLastArmPulse; |
| if (m_emitNeededOnNextScreenPulse) { |
| m_emitNeededOnNextScreenPulse = false; |
| Q_EMIT eventsPending(); |
| } |
| } |
| |
| void QQnxScreenEventThread::handleArmPulse(const struct _pulse &msg) |
| { |
| if (msg.value.sival_int == 0 && m_screenPulsesSinceLastArmPulse == 0) { |
| m_emitNeededOnNextScreenPulse = true; |
| } else { |
| m_screenPulsesSinceLastArmPulse = 0; |
| m_emitNeededOnNextScreenPulse = false; |
| Q_EMIT eventsPending(); |
| } |
| } |
| |
| void QQnxScreenEventThread::handlePulse(const struct _pulse &msg) |
| { |
| if (msg.code == c_screenCode) |
| handleScreenPulse(msg); |
| else if (msg.code == c_armCode) |
| handleArmPulse(msg); |
| else |
| qWarning() << "Unexpected pulse" << msg.code; |
| } |
| |
| void QQnxScreenEventThread::shutdown() |
| { |
| MsgSendPulse(m_connectionId, SIGEV_PULSE_PRIO_INHERIT, c_quitCode, 0); |
| |
| qScreenEventThreadDebug("screen event thread shutdown begin"); |
| |
| // block until thread terminates |
| wait(); |
| |
| qScreenEventThreadDebug("screen event thread shutdown end"); |
| } |