1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Copyright (C) 2008-2009 Torch Mobile Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include <winbase.h>
typedef struct HBITMAP__* HBITMAP;
typedef struct HDC__* HDC;
typedef void *HANDLE;
typedef struct tagBITMAPINFO BITMAPINFO;
namespace WTF {
class MemoryManager {
public:
MemoryManager();
~MemoryManager();
bool allocationCanFail() const { return m_allocationCanFail; }
void setAllocationCanFail(bool c) { m_allocationCanFail = c; }
static HBITMAP createCompatibleBitmap(HDC hdc, int width, int height);
static HBITMAP createDIBSection(const BITMAPINFO* pbmi, void** ppvBits);
static void* m_malloc(size_t size);
static void* m_calloc(size_t num, size_t size);
static void* m_realloc(void* p, size_t size);
static void m_free(void*);
static bool resizeMemory(void* p, size_t newSize);
static void* allocate64kBlock();
static void free64kBlock(void*);
static bool onIdle(DWORD& timeLimitMs);
static LPVOID virtualAlloc(LPVOID lpAddress, DWORD dwSize, DWORD flAllocationType, DWORD flProtect);
static BOOL virtualFree(LPVOID lpAddress, DWORD dwSize, DWORD dwFreeType);
private:
friend MemoryManager* memoryManager();
bool m_allocationCanFail;
};
MemoryManager* memoryManager();
class MemoryAllocationCanFail {
public:
MemoryAllocationCanFail() : m_old(memoryManager()->allocationCanFail()) { memoryManager()->setAllocationCanFail(true); }
~MemoryAllocationCanFail() { memoryManager()->setAllocationCanFail(m_old); }
private:
bool m_old;
};
class MemoryAllocationCannotFail {
public:
MemoryAllocationCannotFail() : m_old(memoryManager()->allocationCanFail()) { memoryManager()->setAllocationCanFail(false); }
~MemoryAllocationCannotFail() { memoryManager()->setAllocationCanFail(m_old); }
private:
bool m_old;
};
}
using WTF::MemoryManager;
using WTF::memoryManager;
using WTF::MemoryAllocationCanFail;
using WTF::MemoryAllocationCannotFail;
|
