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annotate libs/openctm/liblzma/Alloc.c @ 51:fa5c52ea9d59

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author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 17 Jan 2014 18:16:09 +0200
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nuclear@14 1 /* Alloc.c -- Memory allocation functions
nuclear@14 2 2008-09-24
nuclear@14 3 Igor Pavlov
nuclear@14 4 Public domain */
nuclear@14 5
nuclear@14 6 #ifdef _WIN32
nuclear@14 7 #include <windows.h>
nuclear@14 8 #endif
nuclear@14 9 #include <stdlib.h>
nuclear@14 10
nuclear@14 11 #include "Alloc.h"
nuclear@14 12
nuclear@14 13 /* #define _SZ_ALLOC_DEBUG */
nuclear@14 14
nuclear@14 15 /* use _SZ_ALLOC_DEBUG to debug alloc/free operations */
nuclear@14 16 #ifdef _SZ_ALLOC_DEBUG
nuclear@14 17 #include <stdio.h>
nuclear@14 18 int g_allocCount = 0;
nuclear@14 19 int g_allocCountMid = 0;
nuclear@14 20 int g_allocCountBig = 0;
nuclear@14 21 #endif
nuclear@14 22
nuclear@14 23 void *MyAlloc(size_t size)
nuclear@14 24 {
nuclear@14 25 if (size == 0)
nuclear@14 26 return 0;
nuclear@14 27 #ifdef _SZ_ALLOC_DEBUG
nuclear@14 28 {
nuclear@14 29 void *p = malloc(size);
nuclear@14 30 fprintf(stderr, "\nAlloc %10d bytes, count = %10d, addr = %8X", size, g_allocCount++, (unsigned)p);
nuclear@14 31 return p;
nuclear@14 32 }
nuclear@14 33 #else
nuclear@14 34 return malloc(size);
nuclear@14 35 #endif
nuclear@14 36 }
nuclear@14 37
nuclear@14 38 void MyFree(void *address)
nuclear@14 39 {
nuclear@14 40 #ifdef _SZ_ALLOC_DEBUG
nuclear@14 41 if (address != 0)
nuclear@14 42 fprintf(stderr, "\nFree; count = %10d, addr = %8X", --g_allocCount, (unsigned)address);
nuclear@14 43 #endif
nuclear@14 44 free(address);
nuclear@14 45 }
nuclear@14 46
nuclear@14 47 #ifdef _WIN32
nuclear@14 48
nuclear@14 49 void *MidAlloc(size_t size)
nuclear@14 50 {
nuclear@14 51 if (size == 0)
nuclear@14 52 return 0;
nuclear@14 53 #ifdef _SZ_ALLOC_DEBUG
nuclear@14 54 fprintf(stderr, "\nAlloc_Mid %10d bytes; count = %10d", size, g_allocCountMid++);
nuclear@14 55 #endif
nuclear@14 56 return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
nuclear@14 57 }
nuclear@14 58
nuclear@14 59 void MidFree(void *address)
nuclear@14 60 {
nuclear@14 61 #ifdef _SZ_ALLOC_DEBUG
nuclear@14 62 if (address != 0)
nuclear@14 63 fprintf(stderr, "\nFree_Mid; count = %10d", --g_allocCountMid);
nuclear@14 64 #endif
nuclear@14 65 if (address == 0)
nuclear@14 66 return;
nuclear@14 67 VirtualFree(address, 0, MEM_RELEASE);
nuclear@14 68 }
nuclear@14 69
nuclear@14 70 #ifndef MEM_LARGE_PAGES
nuclear@14 71 #undef _7ZIP_LARGE_PAGES
nuclear@14 72 #endif
nuclear@14 73
nuclear@14 74 #ifdef _7ZIP_LARGE_PAGES
nuclear@14 75 SIZE_T g_LargePageSize = 0;
nuclear@14 76 typedef SIZE_T (WINAPI *GetLargePageMinimumP)();
nuclear@14 77 #endif
nuclear@14 78
nuclear@14 79 void SetLargePageSize()
nuclear@14 80 {
nuclear@14 81 #ifdef _7ZIP_LARGE_PAGES
nuclear@14 82 SIZE_T size = 0;
nuclear@14 83 GetLargePageMinimumP largePageMinimum = (GetLargePageMinimumP)
nuclear@14 84 GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "GetLargePageMinimum");
nuclear@14 85 if (largePageMinimum == 0)
nuclear@14 86 return;
nuclear@14 87 size = largePageMinimum();
nuclear@14 88 if (size == 0 || (size & (size - 1)) != 0)
nuclear@14 89 return;
nuclear@14 90 g_LargePageSize = size;
nuclear@14 91 #endif
nuclear@14 92 }
nuclear@14 93
nuclear@14 94
nuclear@14 95 void *BigAlloc(size_t size)
nuclear@14 96 {
nuclear@14 97 if (size == 0)
nuclear@14 98 return 0;
nuclear@14 99 #ifdef _SZ_ALLOC_DEBUG
nuclear@14 100 fprintf(stderr, "\nAlloc_Big %10d bytes; count = %10d", size, g_allocCountBig++);
nuclear@14 101 #endif
nuclear@14 102
nuclear@14 103 #ifdef _7ZIP_LARGE_PAGES
nuclear@14 104 if (g_LargePageSize != 0 && g_LargePageSize <= (1 << 30) && size >= (1 << 18))
nuclear@14 105 {
nuclear@14 106 void *res = VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSize - 1)),
nuclear@14 107 MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
nuclear@14 108 if (res != 0)
nuclear@14 109 return res;
nuclear@14 110 }
nuclear@14 111 #endif
nuclear@14 112 return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
nuclear@14 113 }
nuclear@14 114
nuclear@14 115 void BigFree(void *address)
nuclear@14 116 {
nuclear@14 117 #ifdef _SZ_ALLOC_DEBUG
nuclear@14 118 if (address != 0)
nuclear@14 119 fprintf(stderr, "\nFree_Big; count = %10d", --g_allocCountBig);
nuclear@14 120 #endif
nuclear@14 121
nuclear@14 122 if (address == 0)
nuclear@14 123 return;
nuclear@14 124 VirtualFree(address, 0, MEM_RELEASE);
nuclear@14 125 }
nuclear@14 126
nuclear@14 127 #endif