616 lines
19 KiB
C++
616 lines
19 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qeventdispatcher_glib_p.h"
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#include "qeventdispatcher_unix_p.h"
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#include <private/qthread_p.h>
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#include "qcoreapplication.h"
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#include "qsocketnotifier.h"
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#include <QtCore/qlist.h>
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#include <QtCore/qpair.h>
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#include <glib.h>
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QT_BEGIN_NAMESPACE
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struct GPollFDWithQSocketNotifier
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{
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GPollFD pollfd;
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QSocketNotifier *socketNotifier;
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};
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struct GSocketNotifierSource
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{
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GSource source;
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QList<GPollFDWithQSocketNotifier *> pollfds;
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};
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static gboolean socketNotifierSourcePrepare(GSource *, gint *timeout)
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{
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if (timeout)
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*timeout = -1;
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return false;
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}
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static gboolean socketNotifierSourceCheck(GSource *source)
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{
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GSocketNotifierSource *src = reinterpret_cast<GSocketNotifierSource *>(source);
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bool pending = false;
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for (int i = 0; !pending && i < src->pollfds.count(); ++i) {
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GPollFDWithQSocketNotifier *p = src->pollfds.at(i);
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if (p->pollfd.revents & G_IO_NVAL) {
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// disable the invalid socket notifier
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static const char *t[] = { "Read", "Write", "Exception" };
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qWarning("QSocketNotifier: Invalid socket %d and type '%s', disabling...",
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p->pollfd.fd, t[int(p->socketNotifier->type())]);
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// ### note, modifies src->pollfds!
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p->socketNotifier->setEnabled(false);
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i--;
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} else {
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pending = pending || ((p->pollfd.revents & p->pollfd.events) != 0);
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}
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}
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return pending;
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}
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static gboolean socketNotifierSourceDispatch(GSource *source, GSourceFunc, gpointer)
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{
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QEvent event(QEvent::SockAct);
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GSocketNotifierSource *src = reinterpret_cast<GSocketNotifierSource *>(source);
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for (int i = 0; i < src->pollfds.count(); ++i) {
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GPollFDWithQSocketNotifier *p = src->pollfds.at(i);
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if ((p->pollfd.revents & p->pollfd.events) != 0)
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QCoreApplication::sendEvent(p->socketNotifier, &event);
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}
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return true; // ??? don't remove, right?
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}
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static GSourceFuncs socketNotifierSourceFuncs = {
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socketNotifierSourcePrepare,
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socketNotifierSourceCheck,
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socketNotifierSourceDispatch,
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nullptr,
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nullptr,
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nullptr
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};
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struct GTimerSource
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{
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GSource source;
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QTimerInfoList timerList;
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QEventLoop::ProcessEventsFlags processEventsFlags;
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bool runWithIdlePriority;
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};
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static gboolean timerSourcePrepareHelper(GTimerSource *src, gint *timeout)
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{
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timespec tv = { 0l, 0l };
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if (!(src->processEventsFlags & QEventLoop::X11ExcludeTimers) && src->timerList.timerWait(tv))
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*timeout = (tv.tv_sec * 1000) + ((tv.tv_nsec + 999999) / 1000 / 1000);
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else
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*timeout = -1;
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return (*timeout == 0);
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}
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static gboolean timerSourceCheckHelper(GTimerSource *src)
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{
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if (src->timerList.isEmpty()
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|| (src->processEventsFlags & QEventLoop::X11ExcludeTimers))
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return false;
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if (src->timerList.updateCurrentTime() < src->timerList.constFirst()->timeout)
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return false;
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return true;
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}
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static gboolean timerSourcePrepare(GSource *source, gint *timeout)
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{
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gint dummy;
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if (!timeout)
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timeout = &dummy;
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GTimerSource *src = reinterpret_cast<GTimerSource *>(source);
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if (src->runWithIdlePriority) {
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if (timeout)
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*timeout = -1;
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return false;
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}
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return timerSourcePrepareHelper(src, timeout);
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}
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static gboolean timerSourceCheck(GSource *source)
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{
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GTimerSource *src = reinterpret_cast<GTimerSource *>(source);
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if (src->runWithIdlePriority)
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return false;
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return timerSourceCheckHelper(src);
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}
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static gboolean timerSourceDispatch(GSource *source, GSourceFunc, gpointer)
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{
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GTimerSource *timerSource = reinterpret_cast<GTimerSource *>(source);
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if (timerSource->processEventsFlags & QEventLoop::X11ExcludeTimers)
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return true;
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timerSource->runWithIdlePriority = true;
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(void) timerSource->timerList.activateTimers();
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return true; // ??? don't remove, right again?
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}
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static GSourceFuncs timerSourceFuncs = {
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timerSourcePrepare,
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timerSourceCheck,
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timerSourceDispatch,
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nullptr,
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nullptr,
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nullptr
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};
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struct GIdleTimerSource
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{
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GSource source;
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GTimerSource *timerSource;
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};
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static gboolean idleTimerSourcePrepare(GSource *source, gint *timeout)
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{
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GIdleTimerSource *idleTimerSource = reinterpret_cast<GIdleTimerSource *>(source);
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GTimerSource *timerSource = idleTimerSource->timerSource;
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if (!timerSource->runWithIdlePriority) {
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// Yield to the normal priority timer source
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if (timeout)
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*timeout = -1;
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return false;
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}
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return timerSourcePrepareHelper(timerSource, timeout);
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}
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static gboolean idleTimerSourceCheck(GSource *source)
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{
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GIdleTimerSource *idleTimerSource = reinterpret_cast<GIdleTimerSource *>(source);
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GTimerSource *timerSource = idleTimerSource->timerSource;
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if (!timerSource->runWithIdlePriority) {
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// Yield to the normal priority timer source
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return false;
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}
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return timerSourceCheckHelper(timerSource);
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}
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static gboolean idleTimerSourceDispatch(GSource *source, GSourceFunc, gpointer)
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{
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GTimerSource *timerSource = reinterpret_cast<GIdleTimerSource *>(source)->timerSource;
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(void) timerSourceDispatch(&timerSource->source, nullptr, nullptr);
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return true;
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}
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static GSourceFuncs idleTimerSourceFuncs = {
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idleTimerSourcePrepare,
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idleTimerSourceCheck,
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idleTimerSourceDispatch,
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nullptr,
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nullptr,
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nullptr
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};
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struct GPostEventSource
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{
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GSource source;
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QAtomicInt serialNumber;
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int lastSerialNumber;
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QEventDispatcherGlibPrivate *d;
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};
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static gboolean postEventSourcePrepare(GSource *s, gint *timeout)
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{
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QThreadData *data = QThreadData::current();
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if (!data)
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return false;
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gint dummy;
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if (!timeout)
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timeout = &dummy;
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const bool canWait = data->canWaitLocked();
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*timeout = canWait ? -1 : 0;
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GPostEventSource *source = reinterpret_cast<GPostEventSource *>(s);
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source->d->wakeUpCalled = source->serialNumber.loadRelaxed() != source->lastSerialNumber;
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return !canWait || source->d->wakeUpCalled;
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}
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static gboolean postEventSourceCheck(GSource *source)
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{
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return postEventSourcePrepare(source, nullptr);
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}
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static gboolean postEventSourceDispatch(GSource *s, GSourceFunc, gpointer)
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{
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GPostEventSource *source = reinterpret_cast<GPostEventSource *>(s);
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source->lastSerialNumber = source->serialNumber.loadRelaxed();
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QCoreApplication::sendPostedEvents();
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source->d->runTimersOnceWithNormalPriority();
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return true; // i dunno, george...
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}
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static GSourceFuncs postEventSourceFuncs = {
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postEventSourcePrepare,
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postEventSourceCheck,
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postEventSourceDispatch,
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nullptr,
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nullptr,
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nullptr
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};
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QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(GMainContext *context)
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: mainContext(context)
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{
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#if GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION < 32
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if (qEnvironmentVariableIsEmpty("QT_NO_THREADED_GLIB")) {
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static QBasicMutex mutex;
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QMutexLocker locker(&mutex);
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if (!g_thread_supported())
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g_thread_init(NULL);
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}
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#endif
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if (mainContext) {
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g_main_context_ref(mainContext);
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} else {
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QCoreApplication *app = QCoreApplication::instance();
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if (app && QThread::currentThread() == app->thread()) {
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mainContext = g_main_context_default();
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g_main_context_ref(mainContext);
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} else {
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mainContext = g_main_context_new();
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}
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}
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#if GLIB_CHECK_VERSION (2, 22, 0)
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g_main_context_push_thread_default (mainContext);
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#endif
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// setup post event source
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postEventSource = reinterpret_cast<GPostEventSource *>(g_source_new(&postEventSourceFuncs,
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sizeof(GPostEventSource)));
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postEventSource->serialNumber.storeRelaxed(1);
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postEventSource->d = this;
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g_source_set_can_recurse(&postEventSource->source, true);
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g_source_attach(&postEventSource->source, mainContext);
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// setup socketNotifierSource
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socketNotifierSource =
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reinterpret_cast<GSocketNotifierSource *>(g_source_new(&socketNotifierSourceFuncs,
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sizeof(GSocketNotifierSource)));
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(void) new (&socketNotifierSource->pollfds) QList<GPollFDWithQSocketNotifier *>();
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g_source_set_can_recurse(&socketNotifierSource->source, true);
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g_source_attach(&socketNotifierSource->source, mainContext);
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// setup normal and idle timer sources
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timerSource = reinterpret_cast<GTimerSource *>(g_source_new(&timerSourceFuncs,
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sizeof(GTimerSource)));
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(void) new (&timerSource->timerList) QTimerInfoList();
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timerSource->processEventsFlags = QEventLoop::AllEvents;
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timerSource->runWithIdlePriority = false;
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g_source_set_can_recurse(&timerSource->source, true);
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g_source_attach(&timerSource->source, mainContext);
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idleTimerSource = reinterpret_cast<GIdleTimerSource *>(g_source_new(&idleTimerSourceFuncs,
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sizeof(GIdleTimerSource)));
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idleTimerSource->timerSource = timerSource;
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g_source_set_can_recurse(&idleTimerSource->source, true);
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g_source_attach(&idleTimerSource->source, mainContext);
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}
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void QEventDispatcherGlibPrivate::runTimersOnceWithNormalPriority()
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{
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timerSource->runWithIdlePriority = false;
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}
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QEventDispatcherGlib::QEventDispatcherGlib(QObject *parent)
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: QAbstractEventDispatcher(*(new QEventDispatcherGlibPrivate), parent)
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{
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}
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QEventDispatcherGlib::QEventDispatcherGlib(GMainContext *mainContext, QObject *parent)
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: QAbstractEventDispatcher(*(new QEventDispatcherGlibPrivate(mainContext)), parent)
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{ }
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QEventDispatcherGlib::~QEventDispatcherGlib()
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{
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Q_D(QEventDispatcherGlib);
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// destroy all timer sources
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qDeleteAll(d->timerSource->timerList);
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d->timerSource->timerList.~QTimerInfoList();
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g_source_destroy(&d->timerSource->source);
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g_source_unref(&d->timerSource->source);
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d->timerSource = nullptr;
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g_source_destroy(&d->idleTimerSource->source);
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g_source_unref(&d->idleTimerSource->source);
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d->idleTimerSource = nullptr;
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// destroy socket notifier source
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for (int i = 0; i < d->socketNotifierSource->pollfds.count(); ++i) {
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GPollFDWithQSocketNotifier *p = d->socketNotifierSource->pollfds[i];
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g_source_remove_poll(&d->socketNotifierSource->source, &p->pollfd);
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delete p;
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}
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d->socketNotifierSource->pollfds.~QList<GPollFDWithQSocketNotifier *>();
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g_source_destroy(&d->socketNotifierSource->source);
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g_source_unref(&d->socketNotifierSource->source);
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d->socketNotifierSource = nullptr;
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// destroy post event source
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g_source_destroy(&d->postEventSource->source);
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g_source_unref(&d->postEventSource->source);
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d->postEventSource = nullptr;
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Q_ASSERT(d->mainContext != nullptr);
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#if GLIB_CHECK_VERSION (2, 22, 0)
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g_main_context_pop_thread_default (d->mainContext);
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#endif
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g_main_context_unref(d->mainContext);
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d->mainContext = nullptr;
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}
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bool QEventDispatcherGlib::processEvents(QEventLoop::ProcessEventsFlags flags)
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{
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Q_D(QEventDispatcherGlib);
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const bool canWait = (flags & QEventLoop::WaitForMoreEvents);
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if (canWait)
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emit aboutToBlock();
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else
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emit awake();
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// tell postEventSourcePrepare() and timerSource about any new flags
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QEventLoop::ProcessEventsFlags savedFlags = d->timerSource->processEventsFlags;
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d->timerSource->processEventsFlags = flags;
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if (!(flags & QEventLoop::EventLoopExec)) {
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// force timers to be sent at normal priority
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d->timerSource->runWithIdlePriority = false;
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}
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bool result = g_main_context_iteration(d->mainContext, canWait);
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while (!result && canWait)
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result = g_main_context_iteration(d->mainContext, canWait);
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d->timerSource->processEventsFlags = savedFlags;
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if (canWait)
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emit awake();
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return result;
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}
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bool QEventDispatcherGlib::hasPendingEvents()
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{
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Q_D(QEventDispatcherGlib);
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return g_main_context_pending(d->mainContext);
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}
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void QEventDispatcherGlib::registerSocketNotifier(QSocketNotifier *notifier)
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{
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Q_ASSERT(notifier);
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int sockfd = notifier->socket();
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int type = notifier->type();
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#ifndef QT_NO_DEBUG
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if (sockfd < 0) {
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qWarning("QSocketNotifier: Internal error");
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return;
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} else if (notifier->thread() != thread()
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|| thread() != QThread::currentThread()) {
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qWarning("QSocketNotifier: socket notifiers cannot be enabled from another thread");
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return;
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}
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#endif
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Q_D(QEventDispatcherGlib);
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GPollFDWithQSocketNotifier *p = new GPollFDWithQSocketNotifier;
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p->pollfd.fd = sockfd;
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switch (type) {
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case QSocketNotifier::Read:
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p->pollfd.events = G_IO_IN | G_IO_HUP | G_IO_ERR;
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break;
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case QSocketNotifier::Write:
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p->pollfd.events = G_IO_OUT | G_IO_ERR;
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break;
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case QSocketNotifier::Exception:
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p->pollfd.events = G_IO_PRI | G_IO_ERR;
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break;
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}
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p->socketNotifier = notifier;
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d->socketNotifierSource->pollfds.append(p);
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g_source_add_poll(&d->socketNotifierSource->source, &p->pollfd);
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}
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void QEventDispatcherGlib::unregisterSocketNotifier(QSocketNotifier *notifier)
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{
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Q_ASSERT(notifier);
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#ifndef QT_NO_DEBUG
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int sockfd = notifier->socket();
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if (sockfd < 0) {
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qWarning("QSocketNotifier: Internal error");
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return;
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} else if (notifier->thread() != thread()
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|| thread() != QThread::currentThread()) {
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qWarning("QSocketNotifier: socket notifiers cannot be disabled from another thread");
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return;
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}
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#endif
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Q_D(QEventDispatcherGlib);
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for (int i = 0; i < d->socketNotifierSource->pollfds.count(); ++i) {
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GPollFDWithQSocketNotifier *p = d->socketNotifierSource->pollfds.at(i);
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if (p->socketNotifier == notifier) {
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// found it
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g_source_remove_poll(&d->socketNotifierSource->source, &p->pollfd);
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d->socketNotifierSource->pollfds.removeAt(i);
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delete p;
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return;
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}
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}
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}
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void QEventDispatcherGlib::registerTimer(int timerId, int interval, Qt::TimerType timerType, QObject *object)
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{
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#ifndef QT_NO_DEBUG
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if (timerId < 1 || interval < 0 || !object) {
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qWarning("QEventDispatcherGlib::registerTimer: invalid arguments");
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return;
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} else if (object->thread() != thread() || thread() != QThread::currentThread()) {
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qWarning("QEventDispatcherGlib::registerTimer: timers cannot be started from another thread");
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return;
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}
|
|
#endif
|
|
|
|
Q_D(QEventDispatcherGlib);
|
|
d->timerSource->timerList.registerTimer(timerId, interval, timerType, object);
|
|
}
|
|
|
|
bool QEventDispatcherGlib::unregisterTimer(int timerId)
|
|
{
|
|
#ifndef QT_NO_DEBUG
|
|
if (timerId < 1) {
|
|
qWarning("QEventDispatcherGlib::unregisterTimer: invalid argument");
|
|
return false;
|
|
} else if (thread() != QThread::currentThread()) {
|
|
qWarning("QEventDispatcherGlib::unregisterTimer: timers cannot be stopped from another thread");
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
Q_D(QEventDispatcherGlib);
|
|
return d->timerSource->timerList.unregisterTimer(timerId);
|
|
}
|
|
|
|
bool QEventDispatcherGlib::unregisterTimers(QObject *object)
|
|
{
|
|
#ifndef QT_NO_DEBUG
|
|
if (!object) {
|
|
qWarning("QEventDispatcherGlib::unregisterTimers: invalid argument");
|
|
return false;
|
|
} else if (object->thread() != thread() || thread() != QThread::currentThread()) {
|
|
qWarning("QEventDispatcherGlib::unregisterTimers: timers cannot be stopped from another thread");
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
Q_D(QEventDispatcherGlib);
|
|
return d->timerSource->timerList.unregisterTimers(object);
|
|
}
|
|
|
|
QList<QEventDispatcherGlib::TimerInfo> QEventDispatcherGlib::registeredTimers(QObject *object) const
|
|
{
|
|
if (!object) {
|
|
qWarning("QEventDispatcherUNIX:registeredTimers: invalid argument");
|
|
return QList<TimerInfo>();
|
|
}
|
|
|
|
Q_D(const QEventDispatcherGlib);
|
|
return d->timerSource->timerList.registeredTimers(object);
|
|
}
|
|
|
|
int QEventDispatcherGlib::remainingTime(int timerId)
|
|
{
|
|
#ifndef QT_NO_DEBUG
|
|
if (timerId < 1) {
|
|
qWarning("QEventDispatcherGlib::remainingTimeTime: invalid argument");
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
Q_D(QEventDispatcherGlib);
|
|
return d->timerSource->timerList.timerRemainingTime(timerId);
|
|
}
|
|
|
|
void QEventDispatcherGlib::interrupt()
|
|
{
|
|
wakeUp();
|
|
}
|
|
|
|
void QEventDispatcherGlib::wakeUp()
|
|
{
|
|
Q_D(QEventDispatcherGlib);
|
|
d->postEventSource->serialNumber.ref();
|
|
g_main_context_wakeup(d->mainContext);
|
|
}
|
|
|
|
void QEventDispatcherGlib::flush()
|
|
{
|
|
}
|
|
|
|
bool QEventDispatcherGlib::versionSupported()
|
|
{
|
|
#if !defined(GLIB_MAJOR_VERSION) || !defined(GLIB_MINOR_VERSION) || !defined(GLIB_MICRO_VERSION)
|
|
return false;
|
|
#else
|
|
return ((GLIB_MAJOR_VERSION << 16) + (GLIB_MINOR_VERSION << 8) + GLIB_MICRO_VERSION) >= 0x020301;
|
|
#endif
|
|
}
|
|
|
|
QEventDispatcherGlib::QEventDispatcherGlib(QEventDispatcherGlibPrivate &dd, QObject *parent)
|
|
: QAbstractEventDispatcher(dd, parent)
|
|
{
|
|
}
|
|
|
|
QT_END_NAMESPACE
|
|
|
|
#include "moc_qeventdispatcher_glib_p.cpp"
|