QV4::MemoryManager Class Reference

#include <qv4mm_p.h>

Collaboration diagram for QV4::MemoryManager:

Public Member Functions
	MemoryManager (ExecutionEngine *engine)
	~MemoryManager ()
template<typename ManagedType >
ManagedType::Data *	allocManaged (std::size_t size, Heap::InternalClass *ic)
template<typename ManagedType >
ManagedType::Data *	allocManaged (std::size_t size, InternalClass *ic)
template<typename ManagedType >
ManagedType::Data *	allocManaged (std::size_t size)
template<typename ObjectType >
ObjectType::Data *	allocateObject (Heap::InternalClass *ic)
template<typename ObjectType >
ObjectType::Data *	allocateObject (InternalClass *ic)
template<typename ObjectType >
ObjectType::Data *	allocateObject ()
template<typename ManagedType , typename Arg1 >
ManagedType::Data *	allocWithStringData (std::size_t unmanagedSize, Arg1 &&arg1)
template<typename ObjectType , typename... Args>
ObjectType::Data *	allocObject (Heap::InternalClass *ic, Args &&... args)
template<typename ObjectType , typename... Args>
ObjectType::Data *	allocObject (InternalClass *ic, Args &&... args)
template<typename ObjectType , typename... Args>
ObjectType::Data *	allocate (Args &&... args)
template<typename ManagedType , typename... Args>
ManagedType::Data *	alloc (Args &&... args)
void	runGC ()
void	dumpStats () const
size_t	getUsedMem () const
size_t	getAllocatedMem () const
size_t	getLargeItemsMem () const
void	changeUnmanagedHeapSizeUsage (qptrdiff delta)
template<typename ManagedType >
ManagedType::Data *	allocIC ()
void	registerWeakMap (Heap::MapObject *map)
void	registerWeakSet (Heap::SetObject *set)

Static Public Member Functions
static constexpr std::size_t	align (std::size_t size)

Public Attributes
QV4::ExecutionEngine *	engine
ChunkAllocator *	chunkAllocator
BlockAllocator	blockAllocator
BlockAllocator	icAllocator
HugeItemAllocator	hugeItemAllocator
PersistentValueStorage *	m_persistentValues
PersistentValueStorage *	m_weakValues
QVector< Value * >	m_pendingFreedObjectWrapperValue
Heap::MapObject *	weakMaps = nullptr
Heap::SetObject *	weakSets = nullptr
std::size_t	unmanagedHeapSize = 0
std::size_t	unmanagedHeapSizeGCLimit
std::size_t	usedSlotsAfterLastFullSweep = 0
bool	gcBlocked = false
bool	aggressiveGC = false
bool	gcStats = false
bool	gcCollectorStats = false
int	allocationCount = 0
size_t	lastAllocRequestedSlots = 0
struct {
size_t   maxReservedMem = 0
size_t   maxAllocatedMem = 0
size_t   maxUsedMem = 0
uint   allocations [BlockAllocator::NumBins]
}	statistics

Protected Member Functions
Heap::Base *	allocString (std::size_t unmanagedSize)
	expects size to be aligned
Heap::Base *	allocData (std::size_t size)
Heap::Object *	allocObjectWithMemberData (const QV4::VTable *vtable, uint nMembers)

Detailed Description

Definition at line 107 of file qv4mm_p.h.

Constructor & Destructor Documentation

MemoryManager()

QV4::MemoryManager::MemoryManager

(

ExecutionEngine *

engine

)

Definition at line 675 of file qv4mm.cpp.

References QV4::BlockAllocator::allocationStats, blockAllocator, gcStats, and statistics.

~MemoryManager()

QV4::MemoryManager::~MemoryManager

(

)

Definition at line 1106 of file qv4mm.cpp.

References blockAllocator, chunkAllocator, dumpStats(), QV4::BlockAllocator::freeAll(), QV4::HugeItemAllocator::freeAll(), hugeItemAllocator, icAllocator, m_persistentValues, and m_weakValues.

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Member Function Documentation

align()

static constexpr std::size_t QV4::MemoryManager::align ( std::size_t  size )

inlinestaticconstexpr

Definition at line 117 of file qv4mm_p.h.

Referenced by QV4::MemberData::allocate(), allocObjectWithMemberData(), and allocString().

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alloc()

template<typename ManagedType , typename... Args>

ManagedType::Data * QV4::MemoryManager::alloc ( Args &&...  args )

inline

Definition at line 208 of file qv4mm_p.h.

References args, and engine.

Referenced by QV4::RuntimeHelpers::addHelper(), QV4::RegExpObject::builtinExec(), QV4::QmlContext::create(), QV4::RegExpPrototype::execFirstMatch(), QV4::StringPrototype::method_slice(), and QV4::ExecutionContext::newWithContext().

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allocate()

template<typename ObjectType , typename... Args>

ObjectType::Data * QV4::MemoryManager::allocate ( Args &&...  args )

inline

Definition at line 199 of file qv4mm_p.h.

References args, and engine.

Referenced by QV4::ExecutionEngine::ExecutionEngine(), QQuickV4ParticleData::QQuickV4ParticleData(), allocData(), allocString(), QV4::NodeList::create(), QV4::NamedNodeMap::create(), QV4::QQmlTypeWrapper::create(), QV4::QQmlTypeWrapper::create(), QV4::QmlListWrapper::create(), QV4::QmlListWrapper::create(), QV4::QmlListWrapper::create(), QV4::Node::create(), QV4::QmlContext::create(), QV4::QObjectMethod::create(), QV4::QObjectMethod::create(), QV4::QQmlSqlDatabaseWrapper::create(), QQuickJSContext2DPrototype::create(), QV4::FunctionObject::createBuiltinFunction(), QV4::Heap::Sequence::detached(), QV4::Promise::ReactionHandler::executeResolveThenable(), QQmlDMListAccessorData::get(), QQmlDelegateModelGroup::get(), QQmlListModel::get(), QV4::NodePrototype::getProto(), QQmlComponent::incubateObject(), VDMAbstractItemModelDataType::initializeConstructor(), QV4::Document::load(), QQuickJSContext2DPrototype::method_createConicalGradient(), QQuickJSContext2DPrototype::method_createLinearGradient(), QQuickJSContext2DPrototype::method_createPattern(), QQuickJSContext2DPrototype::method_createRadialGradient(), QV4::StringPrototype::method_iterator(), QV4::PromiseCtor::method_race(), QV4::Proxy::method_revocable(), QV4::ExecutionEngine::newArrayBuffer(), QV4::ExecutionEngine::newArrayBuffer(), QV4::ExecutionEngine::newArrayIteratorObject(), QV4::ExecutionEngine::newArrayObject(), QV4::ExecutionEngine::newArrayObject(), QV4::ExecutionEngine::newArrayObject(), QV4::ExecutionEngine::newBooleanObject(), QV4::ExecutionEngine::newDateObject(), QV4::ExecutionEngine::newDateObject(), QV4::ExecutionEngine::newDateObject(), QV4::ExecutionEngine::newDateObject(), QV4::ExecutionEngine::newDateObject(), QV4::ExecutionEngine::newForInIteratorObject(), QV4::ExecutionEngine::newMapIteratorObject(), QV4::ExecutionEngine::newNumberObject(), QV4::ExecutionEngine::newObject(), QV4::ExecutionEngine::newPromiseObject(), QV4::ExecutionEngine::newPromiseObject(), QV4::ExecutionEngine::newRegExpObject(), QV4::ExecutionEngine::newSetIteratorObject(), QV4::ExecutionEngine::newStringObject(), QV4::ExecutionEngine::newUrlObject(), QV4::ExecutionEngine::newUrlSearchParamsObject(), QV4::ExecutionEngine::newVariantObject(), qt_add_qmlxmlhttprequest(), qt_create_image_data(), QV4::Proxy::virtualCallAsConstructor(), QV4::QQmlTypeWrapper::virtualGet(), QV4::QQmlTypeWrapper::virtualResolveLookupGetter(), and QQmlLocale::wrap().

allocateObject() [1/3]

template<typename ObjectType >

ObjectType::Data * QV4::MemoryManager::allocateObject ( )

inline

Definition at line 163 of file qv4mm_p.h.

References d, and engine.

allocateObject() [2/3]

template<typename ObjectType >

ObjectType::Data * QV4::MemoryManager::allocateObject ( Heap::InternalClass *  ic )

inline

Definition at line 147 of file qv4mm_p.h.

References engine, o, Q_ASSERT, and QV4::Heap::InternalClass::size.

allocateObject() [3/3]

template<typename ObjectType >

ObjectType::Data * QV4::MemoryManager::allocateObject ( InternalClass *  ic )

inline

Definition at line 157 of file qv4mm_p.h.

allocData()

Heap::Base * QV4::MemoryManager::allocData ( std::size_t  size )

protected

Definition at line 717 of file qv4mm.cpp.

References allocate(), allocationCount, blockAllocator, gcBlocked, lastAllocRequestedSlots, Q_ASSERT, QV4::Chunk::SlotSize, and QV4::Chunk::SlotSizeShift.

Referenced by allocObjectWithMemberData().

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allocIC()

template<typename ManagedType >

ManagedType::Data * QV4::MemoryManager::allocIC ( )

inline

Definition at line 229 of file qv4mm_p.h.

Referenced by QV4::ExecutionEngine::ExecutionEngine(), and QV4::ExecutionEngine::newClass().

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allocManaged() [1/3]

template<typename ManagedType >

ManagedType::Data * QV4::MemoryManager::allocManaged ( std::size_t  size )

inline

Definition at line 139 of file qv4mm_p.h.

References engine.

allocManaged() [2/3]

template<typename ManagedType >

ManagedType::Data * QV4::MemoryManager::allocManaged ( std::size_t  size, Heap::InternalClass *  ic  )

inline

Definition at line 121 of file qv4mm_p.h.

References d, engine, Q_ASSERT, Q_STATIC_ASSERT, and QV4::Heap::InternalClass::vtable.

Referenced by QV4::ExecutionContext::cloneBlockContext(), QV4::ExecutionEngine::initRootContext(), QV4::ExecutionEngine::newArrayObject(), QV4::ExecutionContext::newBlockContext(), QV4::ExecutionContext::newCallContext(), QV4::ArrayData::realloc(), and QV4::GeneratorFunction::virtualCall().

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allocManaged() [3/3]

template<typename ManagedType >

ManagedType::Data * QV4::MemoryManager::allocManaged ( std::size_t  size, InternalClass *  ic  )

inline

Definition at line 133 of file qv4mm_p.h.

allocObject() [1/2]

template<typename ObjectType , typename... Args>

ObjectType::Data * QV4::MemoryManager::allocObject ( Heap::InternalClass *  ic, Args &&...  args  )

inline

Definition at line 183 of file qv4mm_p.h.

References args, and d.

Referenced by QV4::ExecutionEngine::ExecutionEngine(), QV4::ExecutionEngine::newArrayObject(), QV4::ExecutionEngine::newObject(), QV4::ExecutionEngine::newSymbolObject(), and QV4::ScriptFunction::virtualCallAsConstructor().

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allocObject() [2/2]

template<typename ObjectType , typename... Args>

ObjectType::Data * QV4::MemoryManager::allocObject ( InternalClass *  ic, Args &&...  args  )

inline

Definition at line 191 of file qv4mm_p.h.

References args, and d.

allocObjectWithMemberData()

Heap::Object * QV4::MemoryManager::allocObjectWithMemberData ( const QV4::VTable *  vtable, uint  nMembers  )

protected

Definition at line 739 of file qv4mm.cpp.

References align(), QV4::HugeItemAllocator::allocate(), allocData(), QV4::HeapItem::as(), QV4::HeapItem::chunk(), QV4::EngineBase::Class_MemberData, QV4::Chunk::clearBit(), QV4::Chunk::DataSize, engine, hugeItemAllocator, QV4::VTable::inlinePropertyOffset, QV4::EngineBase::internalClasses(), QV4::VTable::nInlineProperties, o, Q_ASSERT, QV4::Chunk::setBit(), and QV4::Chunk::SlotSizeShift.

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allocString()

Heap::Base * QV4::MemoryManager::allocString ( std::size_t  unmanagedSize )

protected

expects size to be aligned

Definition at line 696 of file qv4mm.cpp.

References align(), allocate(), allocationCount, blockAllocator, gcBlocked, lastAllocRequestedSlots, QV4::Chunk::SlotSizeShift, and unmanagedHeapSize.

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allocWithStringData()

template<typename ManagedType , typename Arg1 >

ManagedType::Data * QV4::MemoryManager::allocWithStringData ( std::size_t  unmanagedSize, Arg1 &&  arg1  )

inline

Definition at line 173 of file qv4mm_p.h.

References engine, o, and Q_ASSERT.

Referenced by QV4::ExecutionEngine::newIdentifier(), and QV4::ExecutionEngine::newString().

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changeUnmanagedHeapSizeUsage()

void QV4::MemoryManager::changeUnmanagedHeapSizeUsage ( qptrdiff  delta )

inline

Definition at line 226 of file qv4mm_p.h.

dumpStats()

void QV4::MemoryManager::dumpStats

(

)

const

Definition at line 1125 of file qv4mm.cpp.

References gcStats, i, QV4::BlockAllocator::NumBins, qDebug, QV4::Chunk::SlotSizeShift, and statistics.

Referenced by ~MemoryManager().

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getAllocatedMem()

size_t QV4::MemoryManager::getAllocatedMem

(

)

const

Definition at line 1084 of file qv4mm.cpp.

References QV4::BlockAllocator::allocatedMem(), blockAllocator, hugeItemAllocator, icAllocator, and QV4::HugeItemAllocator::usedMem().

Referenced by runGC().

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getLargeItemsMem()

size_t QV4::MemoryManager::getLargeItemsMem

(

)

const

Definition at line 1089 of file qv4mm.cpp.

References hugeItemAllocator, and QV4::HugeItemAllocator::usedMem().

Referenced by runGC().

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getUsedMem()

size_t QV4::MemoryManager::getUsedMem

(

)

const

Definition at line 1079 of file qv4mm.cpp.

References blockAllocator, icAllocator, and QV4::BlockAllocator::usedMem().

Referenced by runGC().

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registerWeakMap()

void QV4::MemoryManager::registerWeakMap

(

Heap::MapObject *

map

)

Definition at line 1094 of file qv4mm.cpp.

References map, and weakMaps.

registerWeakSet()

void QV4::MemoryManager::registerWeakSet

(

Heap::SetObject *

set

)

Definition at line 1100 of file qv4mm.cpp.

References set, and weakSets.

runGC()

void QV4::MemoryManager::runGC

(

)

Definition at line 965 of file qv4mm.cpp.

References aggressiveGC, QV4::BlockAllocator::allocatedMem(), allocationCount, QString::arg(), blockAllocator, QSet< T >::cbegin(), QSet< T >::cend(), QV4::BlockAllocator::chunks, QHash< Key, T >::constBegin(), QHash< Key, T >::constEnd(), QV4::dumpBins(), QString::fromLatin1(), gcBlocked, gcCollectorStats, gcStats, getAllocatedMem(), getLargeItemsMem(), getUsedMem(), hugeItemAllocator, icAllocator, QV4::increaseFreedCountForClass(), it, lastAllocRequestedSlots, QV4::markStackSize, QString::number(), Q_ASSERT, qDebug, qMax(), QV4::BlockAllocator::resetBlackBits(), QV4::HugeItemAllocator::resetBlackBits(), QHash< Key, T >::size(), statistics, unmanagedHeapSize, unmanagedHeapSizeGCLimit, QV4::BlockAllocator::usedMem(), usedSlotsAfterLastFullSweep, and QV4::BlockAllocator::usedSlotsAfterLastSweep.

Referenced by QJSEngine::collectGarbage().

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Member Data Documentation

aggressiveGC

bool QV4::MemoryManager::aggressiveGC = false

Definition at line 308 of file qv4mm_p.h.

Referenced by runGC().

allocationCount

int QV4::MemoryManager::allocationCount = 0

Definition at line 312 of file qv4mm_p.h.

Referenced by allocData(), allocString(), and runGC().

allocations

uint QV4::MemoryManager::allocations[BlockAllocator::NumBins]

Definition at line 319 of file qv4mm_p.h.

blockAllocator

BlockAllocator QV4::MemoryManager::blockAllocator

Definition at line 294 of file qv4mm_p.h.

Referenced by MemoryManager(), ~MemoryManager(), allocData(), allocString(), getAllocatedMem(), getUsedMem(), and runGC().

chunkAllocator

ChunkAllocator* QV4::MemoryManager::chunkAllocator

Definition at line 293 of file qv4mm_p.h.

Referenced by ~MemoryManager().

engine

QV4::ExecutionEngine* QV4::MemoryManager::engine

Definition at line 292 of file qv4mm_p.h.

Referenced by allocObjectWithMemberData().

gcBlocked

bool QV4::MemoryManager::gcBlocked = false

Definition at line 307 of file qv4mm_p.h.

Referenced by allocData(), allocString(), and runGC().

gcCollectorStats

bool QV4::MemoryManager::gcCollectorStats = false

Definition at line 310 of file qv4mm_p.h.

Referenced by runGC().

gcStats

bool QV4::MemoryManager::gcStats = false

Definition at line 309 of file qv4mm_p.h.

Referenced by MemoryManager(), dumpStats(), and runGC().

hugeItemAllocator

HugeItemAllocator QV4::MemoryManager::hugeItemAllocator

Definition at line 296 of file qv4mm_p.h.

Referenced by ~MemoryManager(), allocObjectWithMemberData(), getAllocatedMem(), getLargeItemsMem(), and runGC().

icAllocator

BlockAllocator QV4::MemoryManager::icAllocator

Definition at line 295 of file qv4mm_p.h.

Referenced by ~MemoryManager(), getAllocatedMem(), getUsedMem(), and runGC().

lastAllocRequestedSlots

size_t QV4::MemoryManager::lastAllocRequestedSlots = 0

Definition at line 313 of file qv4mm_p.h.

Referenced by allocData(), allocString(), and runGC().

m_pendingFreedObjectWrapperValue

QVector<Value *> QV4::MemoryManager::m_pendingFreedObjectWrapperValue

Definition at line 299 of file qv4mm_p.h.

m_persistentValues

PersistentValueStorage* QV4::MemoryManager::m_persistentValues

Definition at line 297 of file qv4mm_p.h.

Referenced by QV4::PersistentValue::PersistentValue(), QV4::PersistentValue::PersistentValue(), QV4::PersistentValue::PersistentValue(), QJSManagedValue::QJSManagedValue(), ~MemoryManager(), QV4::ExecutionEngine::registerNativeModule(), QV4::PersistentValue::set(), QV4::PersistentValue::set(), and QV4::PersistentValue::set().

m_weakValues

PersistentValueStorage* QV4::MemoryManager::m_weakValues

Definition at line 298 of file qv4mm_p.h.

Referenced by ~MemoryManager().

maxAllocatedMem

size_t QV4::MemoryManager::maxAllocatedMem = 0

Definition at line 317 of file qv4mm_p.h.

maxReservedMem

size_t QV4::MemoryManager::maxReservedMem = 0

Definition at line 316 of file qv4mm_p.h.

maxUsedMem

size_t QV4::MemoryManager::maxUsedMem = 0

Definition at line 318 of file qv4mm_p.h.

[struct]

struct { ... } QV4::MemoryManager::statistics

Referenced by MemoryManager(), dumpStats(), and runGC().

unmanagedHeapSize

std::size_t QV4::MemoryManager::unmanagedHeapSize = 0

Definition at line 303 of file qv4mm_p.h.

Referenced by allocString(), and runGC().

unmanagedHeapSizeGCLimit

std::size_t QV4::MemoryManager::unmanagedHeapSizeGCLimit

Definition at line 304 of file qv4mm_p.h.

Referenced by runGC().

usedSlotsAfterLastFullSweep

std::size_t QV4::MemoryManager::usedSlotsAfterLastFullSweep = 0

Definition at line 305 of file qv4mm_p.h.

Referenced by runGC().

weakMaps

Heap::MapObject* QV4::MemoryManager::weakMaps = nullptr

Definition at line 300 of file qv4mm_p.h.

Referenced by registerWeakMap().

weakSets

Heap::SetObject* QV4::MemoryManager::weakSets = nullptr

Definition at line 301 of file qv4mm_p.h.

Referenced by registerWeakSet().

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The documentation for this class was generated from the following files:

• qtdeclarative/src/qml/memory/qv4mm_p.h
• qtdeclarative/src/qml/memory/qv4mm.cpp