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127 lines
2.6 KiB
127 lines
2.6 KiB
/* Alloc.c -- Memory allocation functions |
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2013-11-12 : Igor Pavlov : Public domain */ |
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#include "Precomp.h" |
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#ifdef _WIN32 |
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#include <windows.h> |
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#endif |
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#include <stdlib.h> |
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#include "Alloc.h" |
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/* #define _SZ_ALLOC_DEBUG */ |
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/* use _SZ_ALLOC_DEBUG to debug alloc/free operations */ |
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#ifdef _SZ_ALLOC_DEBUG |
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#include <stdio.h> |
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int g_allocCount = 0; |
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int g_allocCountMid = 0; |
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int g_allocCountBig = 0; |
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#endif |
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void *MyAlloc(size_t size) |
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{ |
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if (size == 0) |
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return 0; |
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#ifdef _SZ_ALLOC_DEBUG |
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{ |
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void *p = malloc(size); |
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fprintf(stderr, "\nAlloc %10d bytes, count = %10d, addr = %8X", size, g_allocCount++, (unsigned)p); |
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return p; |
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} |
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#else |
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return malloc(size); |
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#endif |
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} |
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void MyFree(void *address) |
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{ |
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#ifdef _SZ_ALLOC_DEBUG |
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if (address != 0) |
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fprintf(stderr, "\nFree; count = %10d, addr = %8X", --g_allocCount, (unsigned)address); |
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#endif |
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free(address); |
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} |
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#ifdef _WIN32 |
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void *MidAlloc(size_t size) |
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{ |
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if (size == 0) |
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return 0; |
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#ifdef _SZ_ALLOC_DEBUG |
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fprintf(stderr, "\nAlloc_Mid %10d bytes; count = %10d", size, g_allocCountMid++); |
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#endif |
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return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); |
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} |
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void MidFree(void *address) |
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{ |
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#ifdef _SZ_ALLOC_DEBUG |
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if (address != 0) |
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fprintf(stderr, "\nFree_Mid; count = %10d", --g_allocCountMid); |
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#endif |
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if (address == 0) |
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return; |
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VirtualFree(address, 0, MEM_RELEASE); |
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} |
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#ifndef MEM_LARGE_PAGES |
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#undef _7ZIP_LARGE_PAGES |
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#endif |
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#ifdef _7ZIP_LARGE_PAGES |
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SIZE_T g_LargePageSize = 0; |
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typedef SIZE_T (WINAPI *GetLargePageMinimumP)(); |
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#endif |
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void SetLargePageSize() |
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{ |
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#ifdef _7ZIP_LARGE_PAGES |
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SIZE_T size = 0; |
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GetLargePageMinimumP largePageMinimum = (GetLargePageMinimumP) |
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GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "GetLargePageMinimum"); |
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if (largePageMinimum == 0) |
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return; |
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size = largePageMinimum(); |
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if (size == 0 || (size & (size - 1)) != 0) |
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return; |
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g_LargePageSize = size; |
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#endif |
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} |
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void *BigAlloc(size_t size) |
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{ |
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if (size == 0) |
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return 0; |
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#ifdef _SZ_ALLOC_DEBUG |
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fprintf(stderr, "\nAlloc_Big %10d bytes; count = %10d", size, g_allocCountBig++); |
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#endif |
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#ifdef _7ZIP_LARGE_PAGES |
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if (g_LargePageSize != 0 && g_LargePageSize <= (1 << 30) && size >= (1 << 18)) |
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{ |
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void *res = VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSize - 1)), |
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MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE); |
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if (res != 0) |
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return res; |
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} |
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#endif |
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return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE); |
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} |
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void BigFree(void *address) |
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{ |
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#ifdef _SZ_ALLOC_DEBUG |
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if (address != 0) |
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fprintf(stderr, "\nFree_Big; count = %10d", --g_allocCountBig); |
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#endif |
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if (address == 0) |
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return; |
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VirtualFree(address, 0, MEM_RELEASE); |
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} |
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#endif
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