| -rw-r--r-- | noncore/multimedia/opieplayer2/threadutil.cpp | 17 | ||||
| -rw-r--r-- | noncore/multimedia/opieplayer2/threadutil.h | 6 |
2 files changed, 11 insertions, 12 deletions
diff --git a/noncore/multimedia/opieplayer2/threadutil.cpp b/noncore/multimedia/opieplayer2/threadutil.cpp index 7a9e1a4..ff38b1e 100644 --- a/noncore/multimedia/opieplayer2/threadutil.cpp +++ b/noncore/multimedia/opieplayer2/threadutil.cpp @@ -8,313 +8,318 @@ 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. */ #include "threadutil.h" #include <qsocketnotifier.h> #include <pthread.h> #include <assert.h> #include <unistd.h> #include <errno.h> using namespace ThreadUtil; struct Mutex::Data { Data() { pthread_mutex_init( &mutex, 0 ); } ~Data() { pthread_mutex_destroy( &mutex ); } pthread_mutex_t mutex; }; Mutex::Mutex() : d( new Data ) { } Mutex::~Mutex() { delete d; } void Mutex::lock() { pthread_mutex_lock( &d->mutex ); } void Mutex::unlock() { pthread_mutex_unlock( &d->mutex ); } bool Mutex::tryLock() { return pthread_mutex_trylock( &d->mutex ) == 0; } bool Mutex::isLocked() { if ( !tryLock() ) return true; unlock(); return false; } struct WaitCondition::Data { Data() { int result = pthread_cond_init( &waitCondition, 0 ); assert( result == 0 ); } ~Data() { pthread_cond_destroy( &waitCondition ); } pthread_cond_t waitCondition; }; WaitCondition::WaitCondition() : d( new Data ) { } WaitCondition::~WaitCondition() { delete d; } bool WaitCondition::wait() { Mutex m; m.lock(); return wait( m ); } bool WaitCondition::wait( Mutex &mutex ) { return pthread_cond_wait( &d->waitCondition, &mutex.d->mutex ); } void WaitCondition::wakeOne() { pthread_cond_signal( &d->waitCondition ); } void WaitCondition::wakeAll() { pthread_cond_broadcast( &d->waitCondition ); } struct Thread::Data { Data() : isRunning( false ) {} pthread_t self; Mutex guard; bool isRunning; WaitCondition finishCondition; + + Thread *thr; + + void run() { thr->run(); } }; extern "C" { static void terminate_thread( void *arg ) { Thread::Data *data = ( Thread::Data* )arg; assert( data ); AutoLock locker( data->guard ); data->isRunning = false; data->finishCondition.wakeAll(); } -void *_threadutil_start_thread( void *arg ) +static void *start_thread( void *arg ) { - Thread *thr = ( Thread* )arg; + Thread::Data *data = ( Thread::Data* )arg; - pthread_cleanup_push( terminate_thread, thr->d ); + pthread_cleanup_push( terminate_thread, data ); - thr->d->isRunning = true; - thr->run(); + data->isRunning = true; + data->run(); pthread_cleanup_pop( true ); Thread::exit(); return 0; // never reached } } Thread::Thread() : d( new Data ) { + d->thr = this; } Thread::~Thread() { assert( d->isRunning == false ); delete d; } void Thread::start() { AutoLock lock( d->guard ); if ( d->isRunning ) { qDebug( "ThreadUtil::Thread::start() called for running thread." ); return; } pthread_attr_t attributes; pthread_attr_init( &attributes ); pthread_attr_setscope( &attributes, PTHREAD_SCOPE_SYSTEM ); - int err = pthread_create( &d->self, &attributes, _threadutil_start_thread, ( void* )this ); + int err = pthread_create( &d->self, &attributes, start_thread, ( void* )d ); if ( err != 0 ) { qDebug( "ThreadUtil::Thread::start() : can't create thread: %s", strerror( err ) ); pthread_attr_destroy( &attributes ); return; } pthread_attr_destroy( &attributes ); } void Thread::terminate() { AutoLock lock( d->guard ); if ( !d->isRunning ) return; pthread_cancel( d->self ); } bool Thread::wait() { AutoLock lock( d->guard ); if ( !d->isRunning ) return true; return d->finishCondition.wait( d->guard ); } bool Thread::isRunning() const { AutoLock lock( d->guard ); return d->isRunning; } void Thread::exit() { pthread_exit( 0 ); } OnewayNotifier::OnewayNotifier() { int fds[ 2 ]; pipe( fds ); m_readFd = fds[ 0 ]; m_writeFd = fds[ 1 ]; m_notifier = new QSocketNotifier( m_readFd, QSocketNotifier::Read ); connect( m_notifier, SIGNAL( activated( int ) ), this, SLOT( wakeUp() ) ); } OnewayNotifier::~OnewayNotifier() { delete m_notifier; ::close( m_readFd ); ::close( m_writeFd ); } void OnewayNotifier::notify() { const char c = 42; ::write( m_writeFd, &c, 1 ); } void OnewayNotifier::wakeUp() { char c = 0; if ( ::read( m_readFd, &c, 1 ) != 1 ) return; emit awake(); } ChannelMessage::ChannelMessage( int type ) : m_type( type ), m_isCall( false ), m_replied( false ), m_inEventHandler( false ) { } ChannelMessage::~ChannelMessage() { if ( m_guard.isLocked() ) m_guard.unlock(); } void ChannelMessage::reply() { if ( !m_isCall ) { qDebug( "ChannelMessage::reply() - can't reply oneway message!" ); return; } if ( m_inEventHandler ) { m_replied = true; return; } m_condition.wakeOne(); m_guard.unlock(); } struct Channel::Private { Private() { ownerThread = pthread_self(); } pthread_t ownerThread; }; Channel::Channel( QObject *parent, const char *name ) : QObject( parent, name ), d( new Private ) { connect( &m_notifier, SIGNAL( awake() ), this, SLOT( deliver() ) ); } Channel::~Channel() { delete d; } void Channel::send( ChannelMessage *message, SendType type ) { if ( type == WaitForReply ) diff --git a/noncore/multimedia/opieplayer2/threadutil.h b/noncore/multimedia/opieplayer2/threadutil.h index 21ae6b2..2fd0c68 100644 --- a/noncore/multimedia/opieplayer2/threadutil.h +++ b/noncore/multimedia/opieplayer2/threadutil.h @@ -1,205 +1,199 @@ /* This file is part of the KDE project Copyright (C) 2002 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; -extern "C" -{ - void *_threadutil_start_thread( void* ); -} - 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 Thread { - friend void *::_threadutil_start_thread( void* ); public: struct Data; Thread(); virtual ~Thread(); void start(); void terminate(); bool wait(); bool isRunning() const; static void exit(); protected: virtual void run() = 0; private: Data *d; }; 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 */ |