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| 1 /* Alloc.c -- Memory allocation functions | |
| 2 2008-09-24 | |
| 3 Igor Pavlov | |
| 4 Public domain */ | |
| 5 | |
| 6 #ifdef _WIN32 | |
| 7 #include <windows.h> | |
| 8 #endif | |
| 9 #include <stdlib.h> | |
| 10 | |
| 11 #include "Alloc.h" | |
| 12 | |
| 13 /* #define _SZ_ALLOC_DEBUG */ | |
| 14 | |
| 15 /* use _SZ_ALLOC_DEBUG to debug alloc/free operations */ | |
| 16 #ifdef _SZ_ALLOC_DEBUG | |
| 17 #include <stdio.h> | |
| 18 int g_allocCount = 0; | |
| 19 int g_allocCountMid = 0; | |
| 20 int g_allocCountBig = 0; | |
| 21 #endif | |
| 22 | |
| 23 void *MyAlloc(size_t size) | |
| 24 { | |
| 25 if (size == 0) | |
| 26 return 0; | |
| 27 #ifdef _SZ_ALLOC_DEBUG | |
| 28 { | |
| 29 void *p = malloc(size); | |
| 30 fprintf(stderr, "\nAlloc %10d bytes, count = %10d, addr = %8X", size, g_all
ocCount++, (unsigned)p); | |
| 31 return p; | |
| 32 } | |
| 33 #else | |
| 34 return malloc(size); | |
| 35 #endif | |
| 36 } | |
| 37 | |
| 38 void MyFree(void *address) | |
| 39 { | |
| 40 #ifdef _SZ_ALLOC_DEBUG | |
| 41 if (address != 0) | |
| 42 fprintf(stderr, "\nFree; count = %10d, addr = %8X", --g_allocCount, (unsign
ed)address); | |
| 43 #endif | |
| 44 free(address); | |
| 45 } | |
| 46 | |
| 47 #ifdef _WIN32 | |
| 48 | |
| 49 void *MidAlloc(size_t size) | |
| 50 { | |
| 51 if (size == 0) | |
| 52 return 0; | |
| 53 #ifdef _SZ_ALLOC_DEBUG | |
| 54 fprintf(stderr, "\nAlloc_Mid %10d bytes; count = %10d", size, g_allocCountMid
++); | |
| 55 #endif | |
| 56 return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); | |
| 57 } | |
| 58 | |
| 59 void MidFree(void *address) | |
| 60 { | |
| 61 #ifdef _SZ_ALLOC_DEBUG | |
| 62 if (address != 0) | |
| 63 fprintf(stderr, "\nFree_Mid; count = %10d", --g_allocCountMid); | |
| 64 #endif | |
| 65 if (address == 0) | |
| 66 return; | |
| 67 VirtualFree(address, 0, MEM_RELEASE); | |
| 68 } | |
| 69 | |
| 70 #ifndef MEM_LARGE_PAGES | |
| 71 #undef _7ZIP_LARGE_PAGES | |
| 72 #endif | |
| 73 | |
| 74 #ifdef _7ZIP_LARGE_PAGES | |
| 75 SIZE_T g_LargePageSize = 0; | |
| 76 typedef SIZE_T (WINAPI *GetLargePageMinimumP)(); | |
| 77 #endif | |
| 78 | |
| 79 void SetLargePageSize() | |
| 80 { | |
| 81 #ifdef _7ZIP_LARGE_PAGES | |
| 82 SIZE_T size = 0; | |
| 83 GetLargePageMinimumP largePageMinimum = (GetLargePageMinimumP) | |
| 84 GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "GetLargePageMinim
um"); | |
| 85 if (largePageMinimum == 0) | |
| 86 return; | |
| 87 size = largePageMinimum(); | |
| 88 if (size == 0 || (size & (size - 1)) != 0) | |
| 89 return; | |
| 90 g_LargePageSize = size; | |
| 91 #endif | |
| 92 } | |
| 93 | |
| 94 | |
| 95 void *BigAlloc(size_t size) | |
| 96 { | |
| 97 if (size == 0) | |
| 98 return 0; | |
| 99 #ifdef _SZ_ALLOC_DEBUG | |
| 100 fprintf(stderr, "\nAlloc_Big %10d bytes; count = %10d", size, g_allocCountBig
++); | |
| 101 #endif | |
| 102 | |
| 103 #ifdef _7ZIP_LARGE_PAGES | |
| 104 if (g_LargePageSize != 0 && g_LargePageSize <= (1 << 30) && size >= (1 << 18)) | |
| 105 { | |
| 106 void *res = VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSiz
e - 1)), | |
| 107 MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE); | |
| 108 if (res != 0) | |
| 109 return res; | |
| 110 } | |
| 111 #endif | |
| 112 return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); | |
| 113 } | |
| 114 | |
| 115 void BigFree(void *address) | |
| 116 { | |
| 117 #ifdef _SZ_ALLOC_DEBUG | |
| 118 if (address != 0) | |
| 119 fprintf(stderr, "\nFree_Big; count = %10d", --g_allocCountBig); | |
| 120 #endif | |
| 121 | |
| 122 if (address == 0) | |
| 123 return; | |
| 124 VirtualFree(address, 0, MEM_RELEASE); | |
| 125 } | |
| 126 | |
| 127 #endif | |
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Chromium Code Reviews
Issue 624713003:
Keep only base/extractor.[cc|h]. (Closed)
Base URL: https://chromium.googlesource.com/external/omaha.git@master