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comparison: other-licenses/7zstub/src/Common/Alloc.cpp
other-licenses/7zstub/src/Common/Alloc.cpp
- changeset 0
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| -1:000000000000 | 0:3a08dc9853a7 |
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| 1 // Common/Alloc.cpp | |
| 2 | |
| 3 #include "StdAfx.h" | |
| 4 | |
| 5 #ifdef _WIN32 | |
| 6 #include "MyWindows.h" | |
| 7 #else | |
| 8 #include <stdlib.h> | |
| 9 #endif | |
| 10 | |
| 11 #include "Alloc.h" | |
| 12 | |
| 13 /* #define _SZ_ALLOC_DEBUG */ | |
| 14 /* use _SZ_ALLOC_DEBUG to debug alloc/free operations */ | |
| 15 #ifdef _SZ_ALLOC_DEBUG | |
| 16 #include <stdio.h> | |
| 17 int g_allocCount = 0; | |
| 18 int g_allocCountMid = 0; | |
| 19 int g_allocCountBig = 0; | |
| 20 #endif | |
| 21 | |
| 22 void *MyAlloc(size_t size) throw() | |
| 23 { | |
| 24 if (size == 0) | |
| 25 return 0; | |
| 26 #ifdef _SZ_ALLOC_DEBUG | |
| 27 fprintf(stderr, "\nAlloc %10d bytes; count = %10d", size, g_allocCount++); | |
| 28 #endif | |
| 29 return ::malloc(size); | |
| 30 } | |
| 31 | |
| 32 void MyFree(void *address) throw() | |
| 33 { | |
| 34 #ifdef _SZ_ALLOC_DEBUG | |
| 35 if (address != 0) | |
| 36 fprintf(stderr, "\nFree; count = %10d", --g_allocCount); | |
| 37 #endif | |
| 38 | |
| 39 ::free(address); | |
| 40 } | |
| 41 | |
| 42 #ifdef _WIN32 | |
| 43 | |
| 44 void *MidAlloc(size_t size) throw() | |
| 45 { | |
| 46 if (size == 0) | |
| 47 return 0; | |
| 48 #ifdef _SZ_ALLOC_DEBUG | |
| 49 fprintf(stderr, "\nAlloc_Mid %10d bytes; count = %10d", size, g_allocCountMid++); | |
| 50 #endif | |
| 51 return ::VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); | |
| 52 } | |
| 53 | |
| 54 void MidFree(void *address) throw() | |
| 55 { | |
| 56 #ifdef _SZ_ALLOC_DEBUG | |
| 57 if (address != 0) | |
| 58 fprintf(stderr, "\nFree_Mid; count = %10d", --g_allocCountMid); | |
| 59 #endif | |
| 60 if (address == 0) | |
| 61 return; | |
| 62 ::VirtualFree(address, 0, MEM_RELEASE); | |
| 63 } | |
| 64 | |
| 65 static SIZE_T g_LargePageSize = | |
| 66 #ifdef _WIN64 | |
| 67 (1 << 21); | |
| 68 #else | |
| 69 (1 << 22); | |
| 70 #endif | |
| 71 | |
| 72 typedef SIZE_T (WINAPI *GetLargePageMinimumP)(); | |
| 73 | |
| 74 bool SetLargePageSize() | |
| 75 { | |
| 76 GetLargePageMinimumP largePageMinimum = (GetLargePageMinimumP) | |
| 77 ::GetProcAddress(::GetModuleHandle(TEXT("kernel32.dll")), "GetLargePageMinimum"); | |
| 78 if (largePageMinimum == 0) | |
| 79 return false; | |
| 80 SIZE_T size = largePageMinimum(); | |
| 81 if (size == 0 || (size & (size - 1)) != 0) | |
| 82 return false; | |
| 83 g_LargePageSize = size; | |
| 84 return true; | |
| 85 } | |
| 86 | |
| 87 | |
| 88 void *BigAlloc(size_t size) throw() | |
| 89 { | |
| 90 if (size == 0) | |
| 91 return 0; | |
| 92 #ifdef _SZ_ALLOC_DEBUG | |
| 93 fprintf(stderr, "\nAlloc_Big %10d bytes; count = %10d", size, g_allocCountBig++); | |
| 94 #endif | |
| 95 | |
| 96 if (size >= (1 << 18)) | |
| 97 { | |
| 98 void *res = ::VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSize - 1)), | |
| 99 MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE); | |
| 100 if (res != 0) | |
| 101 return res; | |
| 102 } | |
| 103 return ::VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); | |
| 104 } | |
| 105 | |
| 106 void BigFree(void *address) throw() | |
| 107 { | |
| 108 #ifdef _SZ_ALLOC_DEBUG | |
| 109 if (address != 0) | |
| 110 fprintf(stderr, "\nFree_Big; count = %10d", --g_allocCountBig); | |
| 111 #endif | |
| 112 | |
| 113 if (address == 0) | |
| 114 return; | |
| 115 ::VirtualFree(address, 0, MEM_RELEASE); | |
| 116 } | |
| 117 | |
| 118 #endif |
