qv4executableallocator

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qv4executableallocator_p.h

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/home/opencoverage/opencoverage/guest-scripts/qtdeclarative/src/qtdeclarative/src/qml/jsruntime/qv4executableallocator_p.h

Line	Source	Count
1	/****************************************************************************	-
2	**	-
3	** Copyright (C) 2016 The Qt Company Ltd.	-
4	** Contact: https://www.qt.io/licensing/	-
5	**	-
6	** This file is part of the QtQml module of the Qt Toolkit.	-
7	**	-
8	** $QT_BEGIN_LICENSE:LGPL$	-
9	** Commercial License Usage	-
10	** Licensees holding valid commercial Qt licenses may use this file in	-
11	** accordance with the commercial license agreement provided with the	-
12	** Software or, alternatively, in accordance with the terms contained in	-
13	** a written agreement between you and The Qt Company. For licensing terms	-
14	** and conditions see https://www.qt.io/terms-conditions. For further	-
15	** information use the contact form at https://www.qt.io/contact-us.	-
16	**	-
17	** GNU Lesser General Public License Usage	-
18	** Alternatively, this file may be used under the terms of the GNU Lesser	-
19	** General Public License version 3 as published by the Free Software	-
20	** Foundation and appearing in the file LICENSE.LGPL3 included in the	-
21	** packaging of this file. Please review the following information to	-
22	** ensure the GNU Lesser General Public License version 3 requirements	-
23	** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.	-
24	**	-
25	** GNU General Public License Usage	-
26	** Alternatively, this file may be used under the terms of the GNU	-
27	** General Public License version 2.0 or (at your option) the GNU General	-
28	** Public license version 3 or any later version approved by the KDE Free	-
29	** Qt Foundation. The licenses are as published by the Free Software	-
30	** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3	-
31	** included in the packaging of this file. Please review the following	-
32	** information to ensure the GNU General Public License requirements will	-
33	** be met: https://www.gnu.org/licenses/gpl-2.0.html and	-
34	** https://www.gnu.org/licenses/gpl-3.0.html.	-
35	**	-
36	** $QT_END_LICENSE$	-
37	**	-
38	****************************************************************************/	-
39		-
40	#ifndef QV4EXECUTABLEALLOCATOR_H	-
41	#define QV4EXECUTABLEALLOCATOR_H	-
42		-
43	//	-
44	// W A R N I N G	-
45	// -------------	-
46	//	-
47	// This file is not part of the Qt API. It exists purely as an	-
48	// implementation detail. This header file may change from version to	-
49	// version without notice, or even be removed.	-
50	//	-
51	// We mean it.	-
52	//	-
53		-
54	#include "qv4global_p.h"	-
55		-
56	#include <QMultiMap>	-
57	#include <QHash>	-
58	#include <QVector>	-
59	#include <QByteArray>	-
60	#include <QMutex>	-
61		-
62	namespace WTF {	-
63	class PageAllocation;	-
64	}	-
65		-
66	QT_BEGIN_NAMESPACE	-
67		-
68	namespace QV4 {	-
69		-
70	class Q_QML_AUTOTEST_EXPORT ExecutableAllocator	-
71	{	-
72	public:	-
73	struct ChunkOfPages;	-
74	struct Allocation;	-
75		-
76	ExecutableAllocator();	-
77	~ExecutableAllocator();	-
78		-
79	Allocation *allocate(size_t size);	-
80	void free(Allocation *allocation);	-
81		-
82	struct Allocation	-
83	{	-
84	Allocation()	-
85	: size(0)	-
86	, free(true)	-
87	{} executed 1260688 times by 154 tests: `end of block` Executed by: tst_bindingdependencyapi tst_drawingmodes tst_ecmascripttests tst_examples tst_flickableinterop tst_multipointtoucharea_interop tst_parserstress tst_qjsengine tst_qjsonbinding tst_qjsvalue tst_qjsvalueiterator tst_qmlcachegen tst_qmldiskcache tst_qqmlapplicationengine tst_qqmlbinding tst_qqmlcomponent tst_qqmlconnections tst_qqmlconsole tst_qqmlcontext tst_qqmldebugclient tst_qqmldebugjs tst_qqmldebuglocal tst_qqmldebugservice tst_qqmlecmascript tst_qqmlenginecleanup ...	1260688
88		-
89	void *start() const;	-
90	void invalidate() { addr = 0; } never executed: `end of block`	0
91	bool isValid() const { return addr != 0; } executed 1293132 times by 154 tests: `return addr != 0;` Executed by: tst_bindingdependencyapi tst_drawingmodes tst_ecmascripttests tst_examples tst_flickableinterop tst_multipointtoucharea_interop tst_parserstress tst_qjsengine tst_qjsonbinding tst_qjsvalue tst_qjsvalueiterator tst_qmlcachegen tst_qmldiskcache tst_qqmlapplicationengine tst_qqmlbinding tst_qqmlcomponent tst_qqmlconnections tst_qqmlconsole tst_qqmlcontext tst_qqmldebugclient tst_qqmldebugjs tst_qqmldebuglocal tst_qqmldebugservice tst_qqmlecmascript tst_qqmlenginecleanup ...	1293132
92	void deallocate(ExecutableAllocator *allocator);	-
93		-
94	private:	-
95	~Allocation() {}	-
96		-
97	friend class ExecutableAllocator;	-
98		-
99	Allocation *split(size_t dividingSize);	-
100	bool mergeNext(ExecutableAllocator *allocator);	-
101	bool mergePrevious(ExecutableAllocator *allocator);	-
102		-
103	quintptr addr = 0;	-
104	uint size : 31; // More than 2GB of function code? nah :)	-
105	uint free : 1;	-
106	Allocation *next = nullptr;	-
107	Allocation *prev = nullptr;	-
108	};	-
109		-
110	// for debugging / unit-testing	-
111	int freeAllocationCount() const { return freeAllocations.count(); } never executed: `return freeAllocations.count();`	0
112	int chunkCount() const { return chunks.count(); } never executed: `return chunks.count();`	0
113		-
114	struct ChunkOfPages	-
115	{	-
116	ChunkOfPages()	-
117		-
118	{}	-
119	~ChunkOfPages();	-
120		-
121	WTF::PageAllocation *pages = nullptr;	-
122	Allocation *firstAllocation = nullptr;	-
123		-
124	bool contains(Allocation *alloc) const;	-
125	};	-
126		-
127	ChunkOfPages chunkForAllocation(Allocation allocation) const;	-
128		-
129	private:	-
130	QMultiMap<size_t, Allocation*> freeAllocations;	-
131	QMap<quintptr, ChunkOfPages*> chunks;	-
132	mutable QMutex mutex;	-
133	};	-
134		-
135	}	-
136		-
137	QT_END_NAMESPACE	-
138		-
139	#endif // QV4EXECUTABLEALLOCATOR_H	-

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/****************************************************************************

** 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 QV4EXECUTABLEALLOCATOR_H

#define QV4EXECUTABLEALLOCATOR_H

// 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.

#include "qv4global_p.h"

#include <QMultiMap>

#include <QHash>

#include <QVector>

#include <QByteArray>

#include <QMutex>

namespace WTF {

class PageAllocation;

}

QT_BEGIN_NAMESPACE

namespace QV4 {

class Q_QML_AUTOTEST_EXPORT ExecutableAllocator

{

public:

struct ChunkOfPages;

struct Allocation;

ExecutableAllocator();

~ExecutableAllocator();

Allocation *allocate(size_t size);

void free(Allocation *allocation);

struct Allocation

{

Allocation()

: size(0)

, free(true)

{}

executed 1260688 times by 154 tests: end of block

Executed by:

tst_bindingdependencyapi
tst_drawingmodes
tst_ecmascripttests
tst_examples
tst_flickableinterop
tst_multipointtoucharea_interop
tst_parserstress
tst_qjsengine
tst_qjsonbinding
tst_qjsvalue
tst_qjsvalueiterator
tst_qmlcachegen
tst_qmldiskcache
tst_qqmlapplicationengine
tst_qqmlbinding
tst_qqmlcomponent
tst_qqmlconnections
tst_qqmlconsole
tst_qqmlcontext
tst_qqmldebugclient
tst_qqmldebugjs
tst_qqmldebuglocal
tst_qqmldebugservice
tst_qqmlecmascript
tst_qqmlenginecleanup
...

1260688

void *start() const;

void invalidate() { addr = 0; }

never executed: end of block

bool isValid() const { return addr != 0; }

executed 1293132 times by 154 tests: return addr != 0;

Executed by:

tst_bindingdependencyapi
tst_drawingmodes
tst_ecmascripttests
tst_examples
tst_flickableinterop
tst_multipointtoucharea_interop
tst_parserstress
tst_qjsengine
tst_qjsonbinding
tst_qjsvalue
tst_qjsvalueiterator
tst_qmlcachegen
tst_qmldiskcache
tst_qqmlapplicationengine
tst_qqmlbinding
tst_qqmlcomponent
tst_qqmlconnections
tst_qqmlconsole
tst_qqmlcontext
tst_qqmldebugclient
tst_qqmldebugjs
tst_qqmldebuglocal
tst_qqmldebugservice
tst_qqmlecmascript
tst_qqmlenginecleanup
...

1293132

void deallocate(ExecutableAllocator *allocator);

private:

~Allocation() {}

friend class ExecutableAllocator;

Allocation *split(size_t dividingSize);

100

bool mergeNext(ExecutableAllocator *allocator);

101

bool mergePrevious(ExecutableAllocator *allocator);

102

103

quintptr addr = 0;

104

uint size : 31; // More than 2GB of function code? nah :)

105

uint free : 1;

106

Allocation *next = nullptr;

107

Allocation *prev = nullptr;

108

};

109

110

// for debugging / unit-testing

111

int freeAllocationCount() const { return freeAllocations.count(); }

never executed: return freeAllocations.count();

112

int chunkCount() const { return chunks.count(); }

never executed: return chunks.count();

struct ChunkOfPages

{

ChunkOfPages()

{}

~ChunkOfPages();

WTF::PageAllocation *pages = nullptr;

122

Allocation *firstAllocation = nullptr;

123

124

bool contains(Allocation *alloc) const;

125

};

126

127

ChunkOfPages *chunkForAllocation(Allocation *allocation) const;

128

129

private:

130

QMultiMap<size_t, Allocation*> freeAllocations;

131

QMap<quintptr, ChunkOfPages*> chunks;

132

mutable QMutex mutex;

};

}

QT_END_NAMESPACE

#endif // QV4EXECUTABLEALLOCATOR_H

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