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QskMeta stuff seem to work now, but needs more testing

This commit is contained in:
Uwe Rathmann 2018-03-02 14:58:43 +01:00
parent a9f5e0a528
commit 05e2b91c01
10 changed files with 328 additions and 156 deletions
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15
playground/invoker/Invoker.cpp
View File

@ -17,12 +17,20 @@ void Invoker::addCallback( const QObject* object,
m_callbacks.append( QskMetaCallback( object, function ) );
}
void Invoker::addCallback( const QObject* object,
const char* methodName )
{
m_callbacks.append( QskMetaCallback( object, methodName ) );
}
void Invoker::invoke( qreal realValue, int intValue,
Qt::ConnectionType connectionType )
{
QString s = QString( "S: %1 + %2" ).arg( realValue ).arg( intValue );
for ( auto& callback : m_callbacks )
{
void* args[3] = { nullptr };
void* args[4] = { nullptr };
const auto types = callback.parameterTypes();
@ -41,6 +49,11 @@ void Invoker::invoke( qreal realValue, int intValue,
args[i++] = reinterpret_cast< void* >( &realValue );
break;
}
case QMetaType::QString:
{
args[i++] = reinterpret_cast< void* >( &s );
break;
}
default:
break;
}

1
playground/invoker/Invoker.h
View File

@ -19,6 +19,7 @@ public:
void addCallback( const QskMetaFunction& );
void addCallback( const QObject*, const QskMetaFunction& );
void addCallback( const QObject*, const char* methodName );
void invoke( qreal d, int i, Qt::ConnectionType );

42
playground/invoker/main.cpp
View File

@ -9,44 +9,52 @@
#include <QTimer>
#include <QThread>
static void debugNone1()
void debugNone1()
{
qDebug() << "None 1";
}
static void debugNone2()
void debugNone2()
{
qDebug() << "None 2";
}
static void debugValueI1( int i )
void debugValueI1( int i )
{
qDebug() << "I1" << i;
}
static void debugValueI2( int i )
void debugValueI2( int i )
{
qDebug() << "I2" << i;
}
static void debugValueD( qreal d )
void debugValueD( qreal d )
{
qDebug() << "D" << d;
}
static void debugValue( qreal d, int i )
void debugValue( qreal d, int i )
{
qDebug() << d << i;
}
class MyObject : public QObject
{
Q_OBJECT
public:
MyObject( QObject* parent = nullptr ):
QObject( parent )
{
}
Q_INVOKABLE void printInvokable( double d, int i ) const
{
qDebug() << "invokable" << d << i;
}
public Q_SLOTS:
void print0( double d, int i ) const
{
qDebug() << "print0" << d << i;
@ -71,6 +79,11 @@ public:
{
qDebug() << i;
}
void printS( const QString& s ) const
{
qDebug() << s;
}
};
static auto fs = []( int i, double d ) { qDebug() << i << d; };
@ -83,6 +96,18 @@ public:
m_object( new MyObject() ),
m_thread( new QThread( this ) )
{
#if 1
m_invoker.addCallback( m_object, "print0(double,int)" );
m_invoker.addCallback( m_object, "print1(double,int)" );
m_invoker.addCallback( m_object, SLOT(print2(int,double)) );
m_invoker.addCallback( m_object, "print3(double)" );
m_invoker.addCallback( m_object, "print4(int)" );
m_invoker.addCallback( m_object, "print4(int)" );
m_invoker.addCallback( m_object, "printS(QString)" );
m_invoker.addCallback( m_object, "printInvokable(double,int)" );
#endif
#if 1
auto f = [this]( int i, double d ) { qDebug() << i << d << ( ++m_num ); };
m_invoker.addCallback( m_object, &MyObject::print0 );
@ -99,6 +124,7 @@ public:
m_invoker.addCallback( m_object, &MyObject::print2 );
m_invoker.addCallback( m_object, &MyObject::print3 );
m_invoker.addCallback( m_object, &MyObject::print4 );
m_invoker.addCallback( m_object, &MyObject::printS );
m_invoker.addCallback( m_object, []( double d, int i ) { qDebug() << d << i; } );
m_invoker.addCallback( m_object, f );
@ -111,7 +137,7 @@ public:
m_invoker.addCallback( []( int i ) { qDebug() << "I2" << i; } );
m_invoker.addCallback( []( double d ) { qDebug() << "V" << d; } );
m_invoker.addCallback( []( const double& d ) { qDebug() << "R" << d; } );
#endif
}
virtual ~Application()
@ -164,3 +190,5 @@ int main( int argc, char* argv[] )
return app.exec();
}
#include "main.moc"

139
src/common/QskMetaCallback.cpp
View File

@ -5,31 +5,10 @@
#include "QskMetaCallback.h"
#include "QskMetaFunction.h"
#include "QskMetaMethod.h"
#include <QObject>
#include <QCoreApplication>
#include <QThread>
#include <QSemaphore>
#include <QMetaMethod>
QSK_QT_PRIVATE_BEGIN
#include <private/qobject_p.h>
QSK_QT_PRIVATE_END
static inline void qskInvokeMethodQueued( QObject* object,
const QMetaObject* metaObject, ushort methodIndex,
int nargs, int* types, void* args[], QSemaphore* semaphore = nullptr )
{
constexpr QObject* sender = nullptr;
constexpr int signalId = -1;
auto event = new QMetaCallEvent(
metaObject->methodOffset(), methodIndex, metaObject->d.static_metacall,
sender, signalId, nargs, types, args, semaphore );
QCoreApplication::postEvent( object, event );
}
QskMetaCallback::QskMetaCallback( const QObject* object,
const QMetaMethod& method, Qt::ConnectionType connectionType ):
m_object( const_cast< QObject* >( object ) ),
@ -40,6 +19,12 @@ QskMetaCallback::QskMetaCallback( const QObject* object,
{
}
QskMetaCallback::QskMetaCallback( const QObject* object,
const char* methodName, Qt::ConnectionType connectionType ):
QskMetaCallback( object, QskMetaMethod::method( object, methodName ), connectionType )
{
}
QskMetaCallback::QskMetaCallback( const QObject* object,
const QskMetaFunction& function, Qt::ConnectionType connectionType ):
m_object( const_cast< QObject* >( object ) ),
@ -230,7 +215,7 @@ void QskMetaCallback::invoke( void* args[] )
{
case MetaMethod:
{
qskInvokeMethod( object, m_methodData.metaObject,
QskMetaMethod::invoke( object, m_methodData.metaObject,
m_methodData.methodIndex, args, connectionType() );
break;
@ -247,111 +232,3 @@ void QskMetaCallback::invoke( void* args[] )
break;
}
}
void qskInvokeMethod( QObject* object,
const QMetaMethod& method, void* args[],
Qt::ConnectionType connectionType )
{
auto metaObject = method.enclosingMetaObject();
if ( metaObject == nullptr )
return;
const int methodIndex = method.methodIndex() - metaObject->methodOffset();
qskInvokeMethod( object, metaObject, methodIndex, args, connectionType );
}
void qskInvokeMethod( QObject* object,
const QMetaObject* metaObject, int methodIndex, void* args[],
Qt::ConnectionType connectionType )
{
if ( ( metaObject == nullptr ) || ( methodIndex < 0 )
|| ( methodIndex > metaObject->methodCount() ) )
{
return;
}
int invokeType = connectionType & 0x3;
if ( invokeType == Qt::AutoConnection )
{
invokeType = ( object && object->thread() != QThread::currentThread() )
? Qt::QueuedConnection : Qt::DirectConnection;
}
else if ( invokeType == Qt::BlockingQueuedConnection )
{
if ( ( object == nullptr ) || object->thread() == QThread::currentThread() )
{
// We would end up in a deadlock, better do nothing
return;
}
}
if ( invokeType == Qt::DirectConnection )
{
#if 1
if ( object == nullptr )
return; // do we really need an object here ???
#endif
if ( metaObject->d.static_metacall )
{
metaObject->d.static_metacall( object,
QMetaObject::InvokeMetaMethod, methodIndex, args );
}
else
{
QMetaObject::metacall( object,
QMetaObject::InvokeMetaMethod, methodIndex, args );
}
}
else
{
if ( object == nullptr )
return;
#if 1
// should be doable without QMetaMethod. TODO ...
const auto method = metaObject->method( methodIndex );
#endif
const int paramCount = method.parameterCount();
auto types = static_cast< int* >( malloc( paramCount * sizeof( int ) ) );
auto arguments = static_cast< void** >( malloc( paramCount * sizeof( void* ) ) );
types[0] = QMetaType::UnknownType; // a return type is not possible
arguments[0] = nullptr;
for ( int i = 1; i < paramCount; i++ )
{
if ( arguments[i] == nullptr )
{
Q_ASSERT( arguments[i] != nullptr );
free( types );
free( arguments );
return;
}
types[i] = method.parameterType( i );
arguments[i] = args[i - 1];
}
Q_ASSERT( args[paramCount] == nullptr );
if ( connectionType == Qt::QueuedConnection )
{
qskInvokeMethodQueued( object,
metaObject, methodIndex, paramCount + 1, types, args );
}
else
{
QSemaphore semaphore;
qskInvokeMethodQueued( object,
metaObject, methodIndex, paramCount + 1, types, args, &semaphore );
semaphore.acquire();
}
}
}

15
src/common/QskMetaCallback.h
View File

@ -10,12 +10,14 @@
#include <QPointer>
#include <QVector>
#include <QObject>
class QskMetaInvokable;
class QskMetaFunction;
class QMetaObject;
class QMetaMethod;
class QskMetaCallback
class QSK_EXPORT QskMetaCallback
{
public:
enum Type
@ -37,6 +39,9 @@ public:
QskMetaCallback( const QObject*, const QMetaMethod&,
Qt::ConnectionType = Qt::AutoConnection );
QskMetaCallback( const QObject*, const char* methodName,
Qt::ConnectionType = Qt::AutoConnection );
QskMetaCallback( const QskMetaCallback& );
~QskMetaCallback();
@ -99,14 +104,6 @@ inline Qt::ConnectionType QskMetaCallback::connectionType() const
return static_cast< Qt::ConnectionType >( m_connectionType );
}
QSK_EXPORT void qskInvokeMethod(
QObject* object, const QMetaMethod&, void* args[],
Qt::ConnectionType = Qt::AutoConnection );
QSK_EXPORT void qskInvokeMethod(
QObject* object, const QMetaObject*, int methodIndex, void* args[],
Qt::ConnectionType = Qt::AutoConnection );
Q_DECLARE_METATYPE( QskMetaCallback )
#endif

2
src/common/QskMetaFunction.cpp
View File

@ -189,6 +189,8 @@ void QskMetaFunction::invoke(
// object might have died in the meantime
free( types );
free( arguments );
return;
}
qskInvokeFunctionQueued( object, m_invokable, argc, types, arguments );

205
src/common/QskMetaMethod.cpp Normal file
View File

@ -0,0 +1,205 @@
/******************************************************************************
* QSkinny - Copyright (C) 2016 Uwe Rathmann
* This file may be used under the terms of the QSkinny License, Version 1.0
*****************************************************************************/
#include "QskMetaMethod.h"
#include <QObject>
#include <QCoreApplication>
#include <QThread>
#include <QSemaphore>
#include <QMetaMethod>
#include <QDebug>
QSK_QT_PRIVATE_BEGIN
#include <private/qobject_p.h>
QSK_QT_PRIVATE_END
static inline void qskInvokeMethodQueued( QObject* object,
const QMetaObject* metaObject, ushort methodIndex,
int nargs, int* types, void* args[], QSemaphore* semaphore = nullptr )
{
constexpr QObject* sender = nullptr;
constexpr int signalId = -1;
const int methodOffset = metaObject->methodOffset();
auto event = new QMetaCallEvent(
methodOffset, methodIndex - methodOffset,
metaObject->d.static_metacall,
sender, signalId, nargs, types, args, semaphore );
QCoreApplication::postEvent( object, event );
}
void QskMetaMethod::invoke( QObject* object,
const QMetaMethod& method, void* args[],
Qt::ConnectionType connectionType )
{
auto metaObject = method.enclosingMetaObject();
if ( metaObject == nullptr )
return;
const int methodIndex = method.methodIndex() - metaObject->methodOffset();
invoke( object, metaObject, methodIndex, args, connectionType );
}
void QskMetaMethod::invoke( QObject* object,
const QMetaObject* metaObject, int methodIndex, void* argv[],
Qt::ConnectionType connectionType )
{
if ( ( metaObject == nullptr ) || ( methodIndex < 0 )
|| ( methodIndex >= metaObject->methodCount() ) )
{
return;
}
QPointer< QObject > receiver( object );
int invokeType = connectionType & 0x3;
if ( invokeType == Qt::AutoConnection )
{
invokeType = ( object && object->thread() != QThread::currentThread() )
? Qt::QueuedConnection : Qt::DirectConnection;
}
switch( invokeType )
{
case Qt::DirectConnection:
{
#if 1
if ( receiver.isNull() )
return; // do we really always need an object here ???
#endif
const int index = methodIndex - metaObject->methodOffset();
if ( metaObject->d.static_metacall )
{
metaObject->d.static_metacall( receiver,
QMetaObject::InvokeMetaMethod, index, argv );
}
else
{
QMetaObject::metacall( receiver,
QMetaObject::InvokeMetaMethod, index, argv );
}
break;
}
case Qt::BlockingQueuedConnection:
{
if ( receiver.isNull()
|| ( receiver->thread() == QThread::currentThread() ) )
{
// We would end up in a deadlock, better do nothing
return;
}
QSemaphore semaphore;
qskInvokeMethodQueued( receiver, metaObject,
methodIndex, 0, nullptr, argv, &semaphore );
semaphore.acquire();
break;
}
case Qt::QueuedConnection:
{
if ( receiver == nullptr )
return;
#if 1
// should be doable without QMetaMethod. TODO ...
const auto method = metaObject->method( methodIndex );
#endif
const int argc = method.parameterCount() + 1;
auto types = static_cast< int* >( malloc( argc * sizeof( int ) ) );
auto arguments = static_cast< void** >( malloc( argc * sizeof( void* ) ) );
/*
The first one is the return type, one that is always
invalid for Queued Connections.
*/
types[0] = QMetaType::UnknownType;
arguments[0] = nullptr;
for ( int i = 1; i < argc; i++ )
{
if ( argv[i] == nullptr )
{
Q_ASSERT( argv[i] != nullptr );
receiver = nullptr;
break;
}
types[i] = method.parameterType( i - 1 );
arguments[i] = QMetaType::create( types[i], argv[i] );
}
if ( receiver.isNull() )
{
// object might have died in the meantime
free( types );
free( arguments );
return;
}
qskInvokeMethodQueued( object,
metaObject, methodIndex, argc, types, arguments );
break;
}
}
}
QMetaMethod QskMetaMethod::method(
const QMetaObject* metaObject, const char* methodName )
{
if ( metaObject == nullptr || methodName == nullptr )
return QMetaMethod();
constexpr char signalIndicator = '0' + QSIGNAL_CODE;
constexpr char slotIndicator = '0' + QSLOT_CODE;
int index = -1;
if( methodName[0] == signalIndicator )
{
auto signature = QMetaObject::normalizedSignature( methodName + 1 );
index = metaObject->indexOfSignal( signature );
}
else if ( methodName[0] == slotIndicator )
{
auto signature = QMetaObject::normalizedSignature( methodName + 1 );
index = metaObject->indexOfSlot( signature );
}
else
{
auto signature = QMetaObject::normalizedSignature( methodName );
index = metaObject->indexOfMethod( signature );
}
return ( index >= 0 ) ? metaObject->method( index ) : QMetaMethod();
}
QMetaMethod QskMetaMethod::notifySignal(
const QMetaObject* metaObject, const char* propertyName )
{
if ( metaObject == nullptr || propertyName == nullptr )
return QMetaMethod();
const int propertyIndex = metaObject->indexOfProperty( propertyName );
if ( propertyIndex )
{
const auto property = metaObject->property( propertyIndex );
return property.notifySignal();
}
return QMetaMethod();
}

47
src/common/QskMetaMethod.h Normal file
View File

@ -0,0 +1,47 @@
/******************************************************************************
* QSkinny - Copyright (C) 2016 Uwe Rathmann
* This file may be used under the terms of the QSkinny License, Version 1.0
*****************************************************************************/
#ifndef QSK_META_METHOD_H
#define QSK_META_FUNCTION_H 1
#include "QskGlobal.h"
#include <QObject>
#include <QMetaMethod>
class QObject;
class QMetaMethod;
class QMetaObject;
namespace QskMetaMethod
{
QSK_EXPORT void invoke(
QObject* object, const QMetaMethod&, void* args[],
Qt::ConnectionType = Qt::AutoConnection );
QSK_EXPORT void invoke(
QObject*, const QMetaObject*, int methodIndex, void* args[],
Qt::ConnectionType = Qt::AutoConnection );
QSK_EXPORT QMetaMethod method( const QMetaObject*, const char* methodName );
QSK_EXPORT QMetaMethod method( const QObject*, const char* methodName );
QSK_EXPORT QMetaMethod notifySignal( const QMetaObject*, const char* propertyName );
QSK_EXPORT QMetaMethod notifySignal( const QObject*, const char* propertyName );
}
inline QMetaMethod QskMetaMethod::method(
const QObject* object, const char* methodName )
{
return object ? method( object->metaObject(), methodName ) : QMetaMethod();
}
inline QMetaMethod QskMetaMethod::notifySignal(
const QObject* object, const char* propertyName )
{
return object ? notifySignal( object->metaObject(), propertyName ) : QMetaMethod();
}
#endif

2
src/src.pro
View File

@ -43,6 +43,7 @@ HEADERS += \
common/QskMetaCallback.h \
common/QskMetaFunction.h \
common/QskMetaInvokable.cpp \
common/QskMetaMethod.h \
common/QskModule.h \
common/QskNamespace.h \
common/QskObjectCounter.h \
@ -62,6 +63,7 @@ SOURCES += \
common/QskMetaCallback.cpp \
common/QskMetaFunction.cpp \
common/QskMetaInvokable.cpp \
common/QskMetaMethod.cpp \
common/QskModule.cpp \
common/QskObjectCounter.cpp \
common/QskSizePolicy.cpp \