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| 1 /* Alloc.c -- Memory allocation functions | |
| 2 2008-09-24 | |
| 3 Igor Pavlov | |
| 4 Public domain | |
| 5 in the public domain */ | |
| 6 | |
| 7 #ifdef _WIN32 | |
| 8 #include <windows.h> | |
| 9 #endif | |
| 10 #include <stdlib.h> | |
| 11 | |
| 12 #include "Alloc.h" | |
| 13 | |
| 14 /* #define _SZ_ALLOC_DEBUG */ | |
| 15 | |
| 16 /* use _SZ_ALLOC_DEBUG to debug alloc/free operations */ | |
| 17 #ifdef _SZ_ALLOC_DEBUG | |
| 18 #include <stdio.h> | |
| 19 int g_allocCount = 0; | |
| 20 int g_allocCountMid = 0; | |
| 21 int g_allocCountBig = 0; | |
| 22 #endif | |
| 23 | |
| 24 void *MyAlloc(size_t size) | |
| 25 { | |
| 26 if (size == 0) | |
| 27 return 0; | |
| 28 #ifdef _SZ_ALLOC_DEBUG | |
| 29 { | |
| 30 void *p = malloc(size); | |
| 31 fprintf(stderr, "\nAlloc %10d bytes, count = %10d, addr = %8X", size, g_all
ocCount++, (unsigned)p); | |
| 32 return p; | |
| 33 } | |
| 34 #else | |
| 35 return malloc(size); | |
| 36 #endif | |
| 37 } | |
| 38 | |
| 39 void MyFree(void *address) | |
| 40 { | |
| 41 #ifdef _SZ_ALLOC_DEBUG | |
| 42 if (address != 0) | |
| 43 fprintf(stderr, "\nFree; count = %10d, addr = %8X", --g_allocCount, (unsign
ed)address); | |
| 44 #endif | |
| 45 free(address); | |
| 46 } | |
| 47 | |
| 48 #ifdef _WIN32 | |
| 49 | |
| 50 void *MidAlloc(size_t size) | |
| 51 { | |
| 52 if (size == 0) | |
| 53 return 0; | |
| 54 #ifdef _SZ_ALLOC_DEBUG | |
| 55 fprintf(stderr, "\nAlloc_Mid %10d bytes; count = %10d", size, g_allocCountMid
++); | |
| 56 #endif | |
| 57 return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); | |
| 58 } | |
| 59 | |
| 60 void MidFree(void *address) | |
| 61 { | |
| 62 #ifdef _SZ_ALLOC_DEBUG | |
| 63 if (address != 0) | |
| 64 fprintf(stderr, "\nFree_Mid; count = %10d", --g_allocCountMid); | |
| 65 #endif | |
| 66 if (address == 0) | |
| 67 return; | |
| 68 VirtualFree(address, 0, MEM_RELEASE); | |
| 69 } | |
| 70 | |
| 71 #ifndef MEM_LARGE_PAGES | |
| 72 #undef _7ZIP_LARGE_PAGES | |
| 73 #endif | |
| 74 | |
| 75 #ifdef _7ZIP_LARGE_PAGES | |
| 76 SIZE_T g_LargePageSize = 0; | |
| 77 typedef SIZE_T (WINAPI *GetLargePageMinimumP)(); | |
| 78 #endif | |
| 79 | |
| 80 void SetLargePageSize() | |
| 81 { | |
| 82 #ifdef _7ZIP_LARGE_PAGES | |
| 83 SIZE_T size = 0; | |
| 84 GetLargePageMinimumP largePageMinimum = (GetLargePageMinimumP) | |
| 85 GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "GetLargePageMinim
um"); | |
| 86 if (largePageMinimum == 0) | |
| 87 return; | |
| 88 size = largePageMinimum(); | |
| 89 if (size == 0 || (size & (size - 1)) != 0) | |
| 90 return; | |
| 91 g_LargePageSize = size; | |
| 92 #endif | |
| 93 } | |
| 94 | |
| 95 | |
| 96 void *BigAlloc(size_t size) | |
| 97 { | |
| 98 if (size == 0) | |
| 99 return 0; | |
| 100 #ifdef _SZ_ALLOC_DEBUG | |
| 101 fprintf(stderr, "\nAlloc_Big %10d bytes; count = %10d", size, g_allocCountBig
++); | |
| 102 #endif | |
| 103 | |
| 104 #ifdef _7ZIP_LARGE_PAGES | |
| 105 if (g_LargePageSize != 0 && g_LargePageSize <= (1 << 30) && size >= (1 << 18)) | |
| 106 { | |
| 107 void *res = VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSiz
e - 1)), | |
| 108 MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE); | |
| 109 if (res != 0) | |
| 110 return res; | |
| 111 } | |
| 112 #endif | |
| 113 return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); | |
| 114 } | |
| 115 | |
| 116 void BigFree(void *address) | |
| 117 { | |
| 118 #ifdef _SZ_ALLOC_DEBUG | |
| 119 if (address != 0) | |
| 120 fprintf(stderr, "\nFree_Big; count = %10d", --g_allocCountBig); | |
| 121 #endif | |
| 122 | |
| 123 if (address == 0) | |
| 124 return; | |
| 125 VirtualFree(address, 0, MEM_RELEASE); | |
| 126 } | |
| 127 | |
| 128 #endif | |
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Chromium Code Reviews
Issue 658573004:
Updating to new OTS repo from https://github.com/khaledhosny/ots.git (Closed)
Base URL: https://chromium.googlesource.com/external/ots@master