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Diffstat (limited to 'src/qmldebug/qqmlprofilerevent_p.h')
| -rw-r--r-- | src/qmldebug/qqmlprofilerevent_p.h | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/src/qmldebug/qqmlprofilerevent_p.h b/src/qmldebug/qqmlprofilerevent_p.h new file mode 100644 index 0000000000..93562302e9 --- /dev/null +++ b/src/qmldebug/qqmlprofilerevent_p.h @@ -0,0 +1,355 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQMLPROFILEREVENT_P_H +#define QQMLPROFILEREVENT_P_H + +#include <private/qqmlprofilerdefinitions_p.h> + +#include <QtCore/qstring.h> +#include <QtCore/qbytearray.h> +#include <QtCore/qvarlengtharray.h> +#include <QtCore/qmetatype.h> + +#include <initializer_list> +#include <type_traits> + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +QT_BEGIN_NAMESPACE + +struct QQmlProfilerEvent : public QQmlProfilerDefinitions { + QQmlProfilerEvent() : + m_timestamp(-1), m_typeIndex(-1), m_dataType(Inline8Bit), m_dataLength(0) + {} + + template<typename Number> + QQmlProfilerEvent(qint64 timestamp, int typeIndex, std::initializer_list<Number> list) + : m_timestamp(timestamp), m_typeIndex(typeIndex) + { + assignNumbers<std::initializer_list<Number>, Number>(list); + } + + QQmlProfilerEvent(qint64 timestamp, int typeIndex, const QString &data) + : m_timestamp(timestamp), m_typeIndex(typeIndex) + { + assignNumbers<QByteArray, qint8>(data.toUtf8()); + } + + template<typename Number> + QQmlProfilerEvent(qint64 timestamp, int typeIndex, const QVector<Number> &data) + : m_timestamp(timestamp), m_typeIndex(typeIndex) + { + assignNumbers<QVector<Number>, Number>(data); + } + + QQmlProfilerEvent(const QQmlProfilerEvent &other) + : m_timestamp(other.m_timestamp), m_typeIndex(other.m_typeIndex), + m_dataType(other.m_dataType), m_dataLength(other.m_dataLength) + { + assignData(other); + } + + QQmlProfilerEvent(QQmlProfilerEvent &&other) + { + memcpy(this, &other, sizeof(QQmlProfilerEvent)); + other.m_dataType = Inline8Bit; // prevent dtor from deleting the pointer + } + + QQmlProfilerEvent &operator=(const QQmlProfilerEvent &other) + { + if (this != &other) { + clearPointer(); + m_timestamp = other.m_timestamp; + m_typeIndex = other.m_typeIndex; + m_dataType = other.m_dataType; + m_dataLength = other.m_dataLength; + assignData(other); + } + return *this; + } + + QQmlProfilerEvent &operator=(QQmlProfilerEvent &&other) + { + if (this != &other) { + memcpy(this, &other, sizeof(QQmlProfilerEvent)); + other.m_dataType = Inline8Bit; + } + return *this; + } + + ~QQmlProfilerEvent() + { + clearPointer(); + } + + qint64 timestamp() const { return m_timestamp; } + void setTimestamp(qint64 timestamp) { m_timestamp = timestamp; } + + int typeIndex() const { return m_typeIndex; } + void setTypeIndex(int typeIndex) { m_typeIndex = typeIndex; } + + template<typename Number> + Number number(int i) const + { + // Trailing zeroes can be omitted, for example for SceneGraph events + if (i >= m_dataLength) + return 0; + switch (m_dataType) { + case Inline8Bit: + return m_data.internal8bit[i]; +QT_WARNING_PUSH +QT_WARNING_DISABLE_GCC("-Warray-bounds") // Mingw 5.3 gcc doesn't get the type/length logic. + case Inline16Bit: + return m_data.internal16bit[i]; + case Inline32Bit: + return m_data.internal32bit[i]; + case Inline64Bit: + return m_data.internal64bit[i]; +QT_WARNING_POP + case External8Bit: + return static_cast<const qint8 *>(m_data.external)[i]; + case External16Bit: + return static_cast<const qint16 *>(m_data.external)[i]; + case External32Bit: + return static_cast<const qint32 *>(m_data.external)[i]; + case External64Bit: + return static_cast<const qint64 *>(m_data.external)[i]; + default: + return 0; + } + } + + template<typename Number> + void setNumber(int i, Number number) + { + QVarLengthArray<Number> nums = numbers<QVarLengthArray<Number>, Number>(); + int prevSize = nums.size(); + if (i >= prevSize) { + nums.resize(i + 1); + // Fill with zeroes. We don't want to accidentally prevent squeezing. + while (prevSize < i) + nums[prevSize++] = 0; + } + nums[i] = number; + setNumbers<QVarLengthArray<Number>, Number>(nums); + } + + template<typename Container, typename Number> + void setNumbers(const Container &numbers) + { + clearPointer(); + assignNumbers<Container, Number>(numbers); + } + + template<typename Number> + void setNumbers(std::initializer_list<Number> numbers) + { + setNumbers<std::initializer_list<Number>, Number>(numbers); + } + + template<typename Container, typename Number = qint64> + Container numbers() const + { + Container container; + for (int i = 0; i < m_dataLength; ++i) + container.append(number<Number>(i)); + return container; + } + + QString string() const + { + switch (m_dataType) { + case External8Bit: + return QString::fromUtf8(static_cast<const char *>(m_data.external), m_dataLength); + case Inline8Bit: + return QString::fromUtf8(m_data.internalChar, m_dataLength); + default: + Q_UNREACHABLE(); + return QString(); + } + } + + void setString(const QString &data) + { + clearPointer(); + assignNumbers<QByteArray, char>(data.toUtf8()); + } + + Message rangeStage() const + { + Q_ASSERT(m_dataType == Inline8Bit); + return static_cast<Message>(m_data.internal8bit[0]); + } + + void setRangeStage(Message stage) + { + clearPointer(); + m_dataType = Inline8Bit; + m_dataLength = 1; + m_data.internal8bit[0] = stage; + } + + bool isValid() const + { + return m_timestamp != -1; + } + +private: + enum Type: quint16 { + External = 1, + Inline8Bit = 8, + External8Bit = Inline8Bit | External, + Inline16Bit = 16, + External16Bit = Inline16Bit | External, + Inline32Bit = 32, + External32Bit = Inline32Bit | External, + Inline64Bit = 64, + External64Bit = Inline64Bit | External + }; + + qint64 m_timestamp; + + static const int s_internalDataLength = 8; + union { + void *external; + char internalChar [s_internalDataLength]; + qint8 internal8bit [s_internalDataLength]; + qint16 internal16bit[s_internalDataLength / 2]; + qint32 internal32bit[s_internalDataLength / 4]; + qint64 internal64bit[s_internalDataLength / 8]; + } m_data; + + qint32 m_typeIndex; + Type m_dataType; + quint16 m_dataLength; + + void assignData(const QQmlProfilerEvent &other) + { + if (m_dataType & External) { + uint length = m_dataLength * (other.m_dataType / 8); + m_data.external = malloc(length); + memcpy(m_data.external, other.m_data.external, length); + } else { + memcpy(&m_data, &other.m_data, sizeof(m_data)); + } + } + + template<typename Big, typename Small> + bool squeezable(Big source) + { + return static_cast<Small>(source) == source; + } + + template<typename Container, typename Number> + typename std::enable_if<(sizeof(Number) > 1), bool>::type + squeeze(const Container &numbers) + { + typedef typename QIntegerForSize<sizeof(Number) / 2>::Signed Small; + foreach (Number item, numbers) { + if (!squeezable<Number, Small>(item)) + return false; + } + assignNumbers<Container, Small>(numbers); + return true; + } + + template<typename Container, typename Number> + typename std::enable_if<(sizeof(Number) <= 1), bool>::type + squeeze(const Container &) + { + return false; + } + + template<typename Container, typename Number> + void assignNumbers(const Container &numbers) + { + Number *data; + m_dataLength = squeezable<size_t, quint16>(static_cast<size_t>(numbers.size())) ? + static_cast<quint16>(numbers.size()) : std::numeric_limits<quint16>::max(); + if (m_dataLength > sizeof(m_data) / sizeof(Number)) { + if (squeeze<Container, Number>(numbers)) + return; + m_dataType = static_cast<Type>((sizeof(Number) * 8) | External); + m_data.external = malloc(m_dataLength * sizeof(Number)); + data = static_cast<Number *>(m_data.external); + } else { + m_dataType = static_cast<Type>(sizeof(Number) * 8); + data = static_cast<Number *>(m_dataType & External ? m_data.external : &m_data); + } + quint16 i = 0; + for (Number item : numbers) { + if (i >= m_dataLength) + break; + data[i++] = item; + } + } + + void clearPointer() + { + if (m_dataType & External) + free(m_data.external); + } + + friend QDataStream &operator>>(QDataStream &stream, QQmlProfilerEvent &event); + friend QDataStream &operator<<(QDataStream &stream, const QQmlProfilerEvent &event); +}; + +bool operator==(const QQmlProfilerEvent &event1, const QQmlProfilerEvent &event2); +bool operator!=(const QQmlProfilerEvent &event1, const QQmlProfilerEvent &event2); + +QDataStream &operator>>(QDataStream &stream, QQmlProfilerEvent &event); +QDataStream &operator<<(QDataStream &stream, const QQmlProfilerEvent &event); + +Q_DECLARE_TYPEINFO(QQmlProfilerEvent, Q_MOVABLE_TYPE); + +QT_END_NAMESPACE + +Q_DECLARE_METATYPE(QQmlProfilerEvent) + +#endif // QQMLPROFILEREVENT_P_H |