From 4447c70039ba1a3104bf229628699f33b8608973 Mon Sep 17 00:00:00 2001
From: simon <simon>
Date: Mon, 02 Dec 2002 10:25:36 +0000
Subject: - put a thread pipe between the xine callback handler and the receiver

  on qt side, to avoid problems like repaints from within a non-gui thread
---
(limited to 'noncore/multimedia/opieplayer2/threadutil.h')

diff --git a/noncore/multimedia/opieplayer2/threadutil.h b/noncore/multimedia/opieplayer2/threadutil.h
new file mode 100644
index 0000000..bcb9db9
--- a/dev/null
+++ b/noncore/multimedia/opieplayer2/threadutil.h
@@ -0,0 +1,176 @@
+/* This file is part of the KDE project
+   Copyright (C) 1999 Simon Hausmann <hausmann@kde.org>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+*/
+
+#ifndef THREADUTIL_H
+#define THREADUTIL_H
+
+#include <qvaluelist.h>
+#include <qobject.h>
+#include <qguardedptr.h>
+
+class QSocketNotifier;
+
+namespace ThreadUtil
+{
+
+    class Mutex
+    {
+        friend class WaitCondition;
+    public:
+        Mutex();
+        ~Mutex();
+
+        void lock();
+        void unlock();
+        bool tryLock();
+        bool isLocked();
+
+    private:
+        struct Data;
+        Data *d;
+
+        Mutex( const Mutex & );
+        Mutex &operator=( const Mutex & );
+    };
+
+    class AutoLock
+    {
+    public:
+        AutoLock( Mutex &mutex ) : m_mutex( mutex ) { m_mutex.lock(); }
+        ~AutoLock() { m_mutex.unlock(); }
+
+        Mutex *operator &() const { return &m_mutex; }
+
+    private:
+        Mutex &m_mutex;
+    };
+
+    class WaitCondition
+    {
+    public:
+        WaitCondition();
+        ~WaitCondition();
+
+        bool wait();
+        bool wait( Mutex &mutex );
+
+        void wakeOne();
+        void wakeAll();
+
+    private:
+        struct Data;
+        Data *d;
+
+        WaitCondition( const WaitCondition & );
+        WaitCondition &operator=( const WaitCondition & );
+    };
+
+    class OnewayNotifier : public QObject
+    {
+        Q_OBJECT
+    public:
+        OnewayNotifier();
+        ~OnewayNotifier();
+
+        void notify();
+
+    signals:
+        void awake();
+
+    private slots:
+        void wakeUp();
+
+    private:
+        int m_readFd;
+        int m_writeFd;
+        QSocketNotifier *m_notifier;
+    };
+
+
+    class Channel;
+
+    class ChannelMessage
+    {
+        friend class Channel;
+    public:
+        ChannelMessage( int type = -1 );
+        virtual ~ChannelMessage();
+
+        int type() const { return m_type; }
+
+        void reply();
+
+    private:
+        ChannelMessage( const ChannelMessage & );
+        ChannelMessage &operator=( const ChannelMessage );
+
+        int m_type;
+        bool m_isCall : 1;
+        bool m_replied : 1;
+        bool m_inEventHandler : 1;
+        Mutex m_guard;
+        WaitCondition m_condition;
+        QGuardedPtr<Channel> m_channel;
+    };
+
+    class Channel : public QObject
+    {
+        Q_OBJECT
+    public:
+        enum SendType { OneWay, WaitForReply };
+        Channel( QObject *parent = 0, const char *name = 0 );
+        virtual ~Channel();
+
+        void send( ChannelMessage *message, SendType type );
+
+    protected:
+        virtual void receiveMessage( ChannelMessage *message, SendType type ) = 0;
+
+    private slots:
+        void deliver();
+
+    private:
+        OnewayNotifier m_notifier;
+
+        struct MsgEnvelope
+        {
+            MsgEnvelope() : type( OneWay ), msg( 0 ) {}
+            MsgEnvelope( SendType _type , ChannelMessage *_msg )
+                : type( _type ), msg( _msg ) {}
+
+            SendType type;
+            ChannelMessage *msg;
+        };
+
+        void deliverOne( const MsgEnvelope &envelope );
+
+        typedef QValueList<MsgEnvelope> MsgEnvelopeList;
+
+        MsgEnvelopeList m_pendingMessages;
+        Mutex m_pendingMessagesGuard;
+
+        struct Private;
+        Private *d;
+    };
+
+}
+
+#endif // THREADUTIL_H
+/* vim: et sw=4 ts=4
+ */
--
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