qobject.cpp File Reference

(99f78eb7085b19c78153bdfbff9d24a2098a2a57)

#include "qobject.h"
#include "qobject_p.h"
#include "qobject_p_p.h"
#include "qmetaobject_p.h"
#include "qabstracteventdispatcher.h"
#include "qabstracteventdispatcher_p.h"
#include "qcoreapplication.h"
#include "qcoreapplication_p.h"
#include "qcoreevent_p.h"
#include "qloggingcategory.h"
#include "qvariant.h"
#include "qmetaobject.h"
#include <qthread.h>
#include <private/qthread_p.h>
#include <qdebug.h>
#include <qvarlengtharray.h>
#include <qscopeguard.h>
#include <qset.h>
#include <private/qorderedmutexlocker_p.h>
#include <private/qhooks_p.h>
#include <qtcore_tracepoints_p.h>
#include <new>
#include <mutex>
#include <memory>
#include <ctype.h>
#include <limits.h>
#include "moc_qobject.cpp"

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Classes
struct	SlotObjectGuard

Functions
QT_BEGIN_NAMESPACE	Q_TRACE_POINT (qtcore, QObject_ctor, QObject *object)
	Q_TRACE_POINT (qtcore, QObject_dtor, QObject *object)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_entry, QObject *sender, int signalIndex)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_exit)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_slot_entry, QObject *receiver, int slotIndex)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_slot_exit)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_slot_functor_entry, void *slotObject)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_slot_functor_exit)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_declarative_signal_entry, QObject *sender, int signalIndex)
	Q_TRACE_POINT (qtcore, QMetaObject_activate_declarative_signal_exit)
void	qt_register_signal_spy_callbacks (QSignalSpyCallbackSet *callback_set)
static int *	queuedConnectionTypes (const QMetaMethod &method)
static int *	queuedConnectionTypes (const QArgumentType *argumentTypes, int argc)
static QBasicMutex *	signalSlotLock (const QObject *o)
static void	computeOffsets (const QMetaObject *metaobject, int *signalOffset, int *methodOffset)
static bool	check_parent_thread (QObject *parent, QThreadData *parentThreadData, QThreadData *currentThreadData)
static bool	matches_objectName_non_null (QObject *obj, QAnyStringView name)
void	qt_qFindChildren_helper (const QObject *parent, QAnyStringView name, const QMetaObject &mo, QList< void * > *list, Qt::FindChildOptions options)
QObject *	qt_qFindChild_helper (const QObject *parent, QAnyStringView name, const QMetaObject &mo, Qt::FindChildOptions options)
const char *	qFlagLocation (const char *method)
static int	extract_code (const char *member)
static const char *	extract_location (const char *member)
static bool	check_signal_macro (const QObject *sender, const char *signal, const char *func, const char *op)
static bool	check_method_code (int code, const QObject *object, const char *method, const char *func)
static Q_DECL_COLD_FUNCTION void	err_method_notfound (const QObject *object, const char *method, const char *func)
static Q_DECL_COLD_FUNCTION void	err_info_about_objects (const char *func, const QObject *sender, const QObject *receiver)
static void	check_and_warn_compat (const QMetaObject *sender, const QMetaMethod &signal, const QMetaObject *receiver, const QMetaMethod &method)
static int	methodIndexToSignalIndex (const QMetaObject **base, int signal_index)
static QByteArray	formatConnectionSignature (const char *className, const QMetaMethod &method)
static QByteArray	msgConnect (const QMetaObject *senderMo, const QByteArray &senderName, const QMetaMethod &signal, const QObject *receiver, int receiverIndex)
static void	queued_activate (QObject *sender, int signal, QObjectPrivate::Connection *c, void **argv)
template<bool callbacks_enabled>
void	doActivate (QObject *sender, int signal_index, void **argv)
static void	dumpRecursive (int level, const QObject *object)
QDebug	operator<< (QDebug dbg, const QObject *o)
static void	connectWarning (const QObject *sender, const QMetaObject *senderMetaObject, const QObject *receiver, const char *message)

Variables
static int	DIRECT_CONNECTION_ONLY = 0
Q_CORE_EXPORT QBasicAtomicPointer< QSignalSpyCallbackSet >	qt_signal_spy_callback_set = Q_BASIC_ATOMIC_INITIALIZER(nullptr)
static Q_CONSTINIT QBasicMutex	_q_ObjectMutexPool [131]

Function Documentation

check_and_warn_compat()

static void check_and_warn_compat ( const QMetaObject * sender, const QMetaMethod & signal, const QMetaObject * receiver, const QMetaMethod & method )

inlinestatic

Definition at line 2873 of file qobject.cpp.

References QMetaObject::className(), QMetaMethod::Compatibility, method, qCWarning, QMetaMethod::Signal, and signal.

Referenced by QObject::connect(), and QObject::connect().

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check_method_code()

static bool check_method_code ( int code, const QObject * object, const char * method, const char * func )

static

Definition at line 2595 of file qobject.cpp.

References method, qCWarning, QSIGNAL_CODE, and QSLOT_CODE.

Referenced by QObject::connect(), and QObject::disconnect().

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check_parent_thread()

static bool check_parent_thread ( QObject * parent, QThreadData * parentThreadData, QThreadData * currentThreadData )

static

Definition at line 901 of file qobject.cpp.

References qWarning, and QObject::thread().

Referenced by QObject::QObject().

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check_signal_macro()

static bool check_signal_macro ( const QObject * sender, const char * signal, const char * func, const char * op )

static

Definition at line 2579 of file qobject.cpp.

References extract_code(), qCWarning, QSIGNAL_CODE, QSLOT_CODE, and signal.

Referenced by QObject::connect(), QObject::disconnect(), and QObject::receivers().

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computeOffsets()

static void computeOffsets ( const QMetaObject * metaobject, int * signalOffset, int * methodOffset )

static

For a given metaobject, compute the signal offset, and the method offset (including signals)

Definition at line 216 of file qobject.cpp.

References d, QMetaObject::d, QMetaObjectPrivate::get(), and Q_ASSERT.

Referenced by QMetaObjectPrivate::memberIndexes(), and methodIndexToSignalIndex().

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connectWarning()

static void connectWarning ( const QObject * sender, const QMetaObject * senderMetaObject, const QObject * receiver, const char * message )

static

Definition at line 5221 of file qobject.cpp.

References qCWarning.

Referenced by QObjectPrivate::connectImpl().

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doActivate()

template<bool callbacks_enabled>

void doActivate	(	QObject *	sender,
		int	signal_index,
		void **	argv )

Definition at line 3991 of file qobject.cpp.

References QSemaphore::acquire(), QObjectPrivate::SignalVector::at(), Qt::AutoConnection, Qt::BlockingQueuedConnection, QObjectPrivate::connections, QThread::currentThreadId(), QList< T >::first(), QObjectPrivate::get(), QMetaObject::InvokeMetaMethod, list, QBasicAtomicPointer< X >::loadRelaxed(), lock, QMetaObject::metacall(), method, QCoreApplication::postEvent(), Q_ASSERT, Q_HAS_TRACEPOINTS, Q_TRACE_SCOPE, qt_signal_spy_callback_set, queued_activate(), Qt::QueuedConnection, qWarning, QObjectPrivate::removeConnection(), QAbstractDeclarativeData::signalEmitted, signalSlotLock(), sp, and QThreadData::threadId.

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dumpRecursive()

static void dumpRecursive ( int level, const QObject * object )

static

Definition at line 4369 of file qobject.cpp.

References child, dumpRecursive(), QObjectPrivate::get(), qDebug, and qUtf16Printable.

Referenced by QObject::dumpObjectTree(), and dumpRecursive().

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err_info_about_objects()

static Q_DECL_COLD_FUNCTION void err_info_about_objects ( const char * func, const QObject * sender, const QObject * receiver )

static

Definition at line 2626 of file qobject.cpp.

References QObject::objectName, and qCWarning.

Referenced by QObject::connect(), and QObject::disconnect().

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err_method_notfound()

static Q_DECL_COLD_FUNCTION void err_method_notfound ( const QObject * object, const char * method, const char * func )

static

Definition at line 2608 of file qobject.cpp.

References extract_code(), extract_location(), method, qCWarning, QSIGNAL_CODE, and QSLOT_CODE.

Referenced by QObject::connect(), QObject::disconnect(), and QObject::receivers().

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extract_code()

static int extract_code ( const char * member )

static

Definition at line 2562 of file qobject.cpp.

Referenced by check_signal_macro(), QObject::connect(), QObject::disconnect(), and err_method_notfound().

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extract_location()

static const char * extract_location ( const char * member )

static

Definition at line 2568 of file qobject.cpp.

References qstrlen().

Referenced by err_method_notfound().

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formatConnectionSignature()

static QByteArray formatConnectionSignature ( const char * className, const QMetaMethod & method )

static

Definition at line 3758 of file qobject.cpp.

References className, method, Q_ASSERT, and QByteArrayLiteral.

Referenced by msgConnect().

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matches_objectName_non_null()

static bool matches_objectName_non_null ( QObject * obj, QAnyStringView name )

static

Definition at line 2127 of file qobject.cpp.

References QObjectPrivate::extraData, and QObjectPrivate::get().

Referenced by qt_qFindChild_helper(), and qt_qFindChildren_helper().

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methodIndexToSignalIndex()

static int methodIndexToSignalIndex ( const QMetaObject ** base, int signal_index )

static

Definition at line 3528 of file qobject.cpp.

References base, computeOffsets(), QObjectData::metaObject, and QMetaObjectPrivate::originalClone().

Referenced by QMetaObject::connect(), QObjectPrivate::connect(), QMetaObject::disconnect(), QObjectPrivate::disconnect(), QMetaObject::disconnectOne(), and QObjectPrivate::getPropertyAdaptorSlotObject().

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msgConnect()

static QByteArray msgConnect ( const QMetaObject * senderMo, const QByteArray & senderName, const QMetaMethod & signal, const QObject * receiver, int receiverIndex )

static

Definition at line 3776 of file qobject.cpp.

References formatConnectionSignature(), QObject::objectName, QByteArrayLiteral, signal, and QString::toLatin1().

Referenced by QMetaObject::connectSlotsByName().

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operator<<()

QDebug operator<<	(	QDebug	dbg,
		const QObject *	o )

Definition at line 4481 of file qobject.cpp.

References d, QObjectPrivate::get(), and o.

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Q_TRACE_POINT() [1/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_declarative_signal_entry	,
		QObject *	sender,
		int	signalIndex )

Q_TRACE_POINT() [2/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_declarative_signal_exit	)

Q_TRACE_POINT() [3/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_entry	,
		QObject *	sender,
		int	signalIndex )

Q_TRACE_POINT() [4/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_exit	)

Q_TRACE_POINT() [5/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_slot_entry	,
		QObject *	receiver,
		int	slotIndex )

Q_TRACE_POINT() [6/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_slot_exit	)

Q_TRACE_POINT() [7/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_slot_functor_entry	,
		void *	slotObject )

Q_TRACE_POINT() [8/10]

Q_TRACE_POINT	(	qtcore	,
		QMetaObject_activate_slot_functor_exit	)

Q_TRACE_POINT() [9/10]

QT_BEGIN_NAMESPACE Q_TRACE_POINT	(	qtcore	,
		QObject_ctor	,
		QObject *	object )

Q_TRACE_POINT() [10/10]

Q_TRACE_POINT	(	qtcore	,
		QObject_dtor	,
		QObject *	object )

qFlagLocation()

const char * qFlagLocation

(

const char *

method

)

Definition at line 2556 of file qobject.cpp.

References method.

qt_qFindChild_helper()

QObject * qt_qFindChild_helper	(	const QObject *	parent,
		QAnyStringView	name,
		const QMetaObject &	mo,
		Qt::FindChildOptions	options )

Definition at line 2174 of file qobject.cpp.

References child, QObject::children(), Qt::FindChildrenRecursively, matches_objectName_non_null(), mo, QObjectData::parent, Q_ASSERT, and qt_qFindChild_helper().

Referenced by QObject::findChild(), and qt_qFindChild_helper().

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qt_qFindChildren_helper()

void qt_qFindChildren_helper	(	const QObject *	parent,
		QAnyStringView	name,
		const QMetaObject &	mo,
		QList< void * > *	list,
		Qt::FindChildOptions	options )

Definition at line 2137 of file qobject.cpp.

References QList< T >::append(), QObject::children(), Qt::FindChildrenRecursively, list, matches_objectName_non_null(), mo, QObjectData::parent, Q_ASSERT, and qt_qFindChildren_helper().

Referenced by QObject::findChildren(), and qt_qFindChildren_helper().

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qt_register_signal_spy_callbacks()

void qt_register_signal_spy_callbacks

(

QSignalSpyCallbackSet *

callback_set

)

Definition at line 63 of file qobject.cpp.

References qt_signal_spy_callback_set.

Referenced by QSignalDumper::endDump(), and QSignalDumper::startDump().

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queued_activate()

static void queued_activate ( QObject * sender, int signal, QObjectPrivate::Connection * c, void ** argv )

static

signal must be in the signal index range (see QObjectPrivate::signalIndex()).

Definition at line 3926 of file qobject.cpp.

References args, create(), DIRECT_CONNECTION_ONLY, QCoreApplication::postEvent(), queuedConnectionTypes(), QMutexLocker< Mutex >::relock(), QObjectPrivate::removeConnection(), QMetaObjectPrivate::signal(), signal, signalSlotLock(), and QMutexLocker< Mutex >::unlock().

Referenced by doActivate().

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queuedConnectionTypes() [1/2]

static int * queuedConnectionTypes ( const QArgumentType * argumentTypes, int argc )

static

Definition at line 104 of file qobject.cpp.

References i, and QArgumentType::type().

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queuedConnectionTypes() [2/2]

static int * queuedConnectionTypes ( const QMetaMethod & method )

static

Definition at line 76 of file qobject.cpp.

References QMetaType::flags(), i, QMetaType::id(), QMetaType::IsPointer, method, Q_CHECK_PTR(), qCWarning, and typeName.

Referenced by QObject::connect(), QObject::connect(), and queued_activate().

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signalSlotLock()

static QBasicMutex * signalSlotLock ( const QObject * o )

inlinestatic

mutex to be locked when accessing the connection lists or the senders list

Definition at line 135 of file qobject.cpp.

References _q_ObjectMutexPool, and o.

Referenced by QObject::~QObject(), QObjectPrivate::ConnectionData::cleanOrphanedConnectionsImpl(), QMetaObjectPrivate::connect(), QObjectPrivate::connectImpl(), QMetaObjectPrivate::disconnect(), QMetaObjectPrivate::disconnectHelper(), doActivate(), QObject::dumpObjectInfo(), QObject::event(), QObject::isSignalConnected(), QObject::moveToThread(), queued_activate(), QObject::receivers(), QObjectPrivate::removeConnection(), QObject::sender(), and QObject::senderSignalIndex().

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Variable Documentation

_q_ObjectMutexPool

Q_CONSTINIT QBasicMutex _q_ObjectMutexPool[131]

static

Definition at line 129 of file qobject.cpp.

Referenced by signalSlotLock().

DIRECT_CONNECTION_ONLY

int DIRECT_CONNECTION_ONLY = 0

static

Definition at line 56 of file qobject.cpp.

Referenced by QObjectPrivate::Connection::~Connection(), and queued_activate().

qt_signal_spy_callback_set

Q_CORE_EXPORT QBasicAtomicPointer<QSignalSpyCallbackSet> qt_signal_spy_callback_set = Q_BASIC_ATOMIC_INITIALIZER(nullptr)

Definition at line 61 of file qobject.cpp.

Referenced by QMetaObject::activate(), QMetaObject::activate(), doActivate(), and qt_register_signal_spy_callbacks().