diff options
Diffstat (limited to 'src/qml/qml/qqmlengine.cpp')
-rw-r--r-- | src/qml/qml/qqmlengine.cpp | 60 |
1 files changed, 26 insertions, 34 deletions
diff --git a/src/qml/qml/qqmlengine.cpp b/src/qml/qml/qqmlengine.cpp index 20f9b6439d..d53c94e901 100644 --- a/src/qml/qml/qqmlengine.cpp +++ b/src/qml/qml/qqmlengine.cpp @@ -110,7 +110,10 @@ Q_DECLARE_METATYPE(QQmlProperty) QT_BEGIN_NAMESPACE typedef QQmlData::BindingBitsType BindingBitsType; -enum { MaxInlineBits = QQmlData::MaxInlineBits }; +enum { + BitsPerType = QQmlData::BitsPerType, + InlineBindingArraySize = QQmlData::InlineBindingArraySize +}; void qmlRegisterBaseTypes(const char *uri, int versionMajor, int versionMinor) { @@ -747,11 +750,12 @@ QQmlData::QQmlData() : ownedByQml1(false), ownMemory(true), indestructible(true), explicitIndestructibleSet(false), hasTaintedV4Object(false), isQueuedForDeletion(false), rootObjectInCreation(false), hasInterceptorMetaObject(false), hasVMEMetaObject(false), parentFrozen(false), - bindingBitsSize(MaxInlineBits), bindingBitsValue(0), notifyList(0), + bindingBitsArraySize(InlineBindingArraySize), notifyList(0), bindings(0), signalHandlers(0), nextContextObject(0), prevContextObject(0), lineNumber(0), columnNumber(0), jsEngineId(0), compilationUnit(0), propertyCache(0), guards(0), extendedData(0) { + memset(bindingBitsValue, 0, sizeof(bindingBitsValue)); init(); } @@ -1825,7 +1829,7 @@ void QQmlData::destroyed(QObject *object) signalHandler = next; } - if (bindingBitsSize > MaxInlineBits) + if (bindingBitsArraySize > InlineBindingArraySize) free(bindingBits); if (propertyCache) @@ -1874,47 +1878,35 @@ void QQmlData::parentChanged(QObject *object, QObject *parent) static void QQmlData_setBit(QQmlData *data, QObject *obj, int bit) { - if (Q_UNLIKELY(data->bindingBitsSize <= bit)) { + uint offset = QQmlData::offsetForBit(bit); + BindingBitsType *bits = (data->bindingBitsArraySize == InlineBindingArraySize) ? data->bindingBitsValue : data->bindingBits; + if (Q_UNLIKELY(data->bindingBitsArraySize <= offset)) { int props = QQmlMetaObject(obj).propertyCount(); Q_ASSERT(bit < 2 * props); - int arraySize = (2 * props + MaxInlineBits - 1) / MaxInlineBits; - Q_ASSERT(arraySize > 1); - - // special handling for 32 here is to make sure we wipe the first byte - // when going from bindingBitsValue to bindingBits, and preserve the old - // set bits so we can restore them after the allocation - int oldArraySize = data->bindingBitsSize > MaxInlineBits ? data->bindingBitsSize / MaxInlineBits : 0; - quintptr oldValue = data->bindingBitsSize == MaxInlineBits ? data->bindingBitsValue : 0; - - data->bindingBits = static_cast<BindingBitsType *>(realloc((data->bindingBitsSize == MaxInlineBits) ? 0 : data->bindingBits, - arraySize * sizeof(BindingBitsType))); - - memset(data->bindingBits + oldArraySize, - 0x00, - sizeof(BindingBitsType) * (arraySize - oldArraySize)); + uint arraySize = (2 * static_cast<uint>(props) + BitsPerType - 1) / BitsPerType; + Q_ASSERT(arraySize > InlineBindingArraySize && arraySize > data->bindingBitsArraySize); - data->bindingBitsSize = arraySize * MaxInlineBits; + BindingBitsType *newBits = static_cast<BindingBitsType *>(malloc(arraySize*sizeof(BindingBitsType))); + memcpy(newBits, bits, data->bindingBitsArraySize * sizeof(BindingBitsType)); + memset(newBits + data->bindingBitsArraySize, 0, sizeof(BindingBitsType) * (arraySize - data->bindingBitsArraySize)); - // reinstate bindingBitsValue after we dropped it - if (oldValue) { - memcpy(data->bindingBits, &oldValue, sizeof(oldValue)); - } + if (data->bindingBitsArraySize > InlineBindingArraySize) + free(bits); + data->bindingBits = newBits; + bits = newBits; + data->bindingBitsArraySize = arraySize; } - - if (data->bindingBitsSize == MaxInlineBits) - data->bindingBitsValue |= BindingBitsType(1) << bit; - else - data->bindingBits[bit / MaxInlineBits] |= (BindingBitsType(1) << (bit % MaxInlineBits)); + Q_ASSERT(offset < data->bindingBitsArraySize); + bits[offset] |= QQmlData::bitFlagForBit(bit); } static void QQmlData_clearBit(QQmlData *data, int bit) { - if (data->bindingBitsSize > bit) { - if (data->bindingBitsSize == MaxInlineBits) - data->bindingBitsValue &= ~(BindingBitsType(1) << (bit % MaxInlineBits)); - else - data->bindingBits[bit / MaxInlineBits] &= ~(BindingBitsType(1) << (bit % MaxInlineBits)); + uint offset = QQmlData::offsetForBit(bit); + if (data->bindingBitsArraySize > offset) { + BindingBitsType *bits = (data->bindingBitsArraySize == InlineBindingArraySize) ? data->bindingBitsValue : data->bindingBits; + bits[offset] &= ~QQmlData::bitFlagForBit(bit); } } |