130 lines
2.5 KiB
C
130 lines
2.5 KiB
C
|
/* Alloc.c -- Memory allocation functions
|
||
|
|
2008-09-24
|
||
|
|
Igor Pavlov
|
||
|
|
Public domain */
|
||
|
|
|
||
|
|
#ifdef _WIN32
|
||
|
|
#include <windows.h>
|
||
|
|
#endif
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#include "Alloc.h"
|
||
|
|
|
||
|
|
/* #define _SZ_ALLOC_DEBUG */
|
||
|
|
|
||
|
|
/* use _SZ_ALLOC_DEBUG to debug alloc/free operations */
|
||
|
|
#ifdef _SZ_ALLOC_DEBUG
|
||
|
|
#include <stdio.h>
|
||
|
|
int g_allocCount = 0;
|
||
|
|
int g_allocCountMid = 0;
|
||
|
|
int g_allocCountBig = 0;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void *MyAlloc(size_t size)
|
||
|
|
{
|
||
|
|
if (size == 0)
|
||
|
|
return 0;
|
||
|
|
#ifdef _SZ_ALLOC_DEBUG
|
||
|
|
{
|
||
|
|
void *p = malloc(size);
|
||
|
|
fprintf(stderr, "\nAlloc %10d bytes, count = %10d, addr = %8X", size, g_allocCount++, (unsigned)p);
|
||
|
|
return p;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
return malloc(size);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void MyFree(void *address)
|
||
|
|
{
|
||
|
|
#ifdef _SZ_ALLOC_DEBUG
|
||
|
|
if (address != 0)
|
||
|
|
fprintf(stderr, "\nFree; count = %10d, addr = %8X", --g_allocCount, (unsigned)address);
|
||
|
|
#endif
|
||
|
|
free(address);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef _WIN32
|
||
|
|
|
||
|
|
void *MidAlloc(size_t size)
|
||
|
|
{
|
||
|
|
if (size == 0)
|
||
|
|
return 0;
|
||
|
|
#ifdef _SZ_ALLOC_DEBUG
|
||
|
|
fprintf(stderr, "\nAlloc_Mid %10d bytes; count = %10d", size, g_allocCountMid++);
|
||
|
|
#endif
|
||
|
|
return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
|
||
|
|
}
|
||
|
|
|
||
|
|
void MidFree(void *address)
|
||
|
|
{
|
||
|
|
#ifdef _SZ_ALLOC_DEBUG
|
||
|
|
if (address != 0)
|
||
|
|
fprintf(stderr, "\nFree_Mid; count = %10d", --g_allocCountMid);
|
||
|
|
#endif
|
||
|
|
if (address == 0)
|
||
|
|
return;
|
||
|
|
VirtualFree(address, 0, MEM_RELEASE);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef MEM_LARGE_PAGES
|
||
|
|
#undef _7ZIP_LARGE_PAGES
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef _7ZIP_LARGE_PAGES
|
||
|
|
SIZE_T g_LargePageSize = 0;
|
||
|
|
typedef SIZE_T (WINAPI *GetLargePageMinimumP)();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void SetLargePageSize()
|
||
|
|
{
|
||
|
|
#ifdef _7ZIP_LARGE_PAGES
|
||
|
|
SIZE_T size = 0;
|
||
|
|
GetLargePageMinimumP largePageMinimum = (GetLargePageMinimumP)
|
||
|
|
GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "GetLargePageMinimum");
|
||
|
|
if (largePageMinimum == 0)
|
||
|
|
return;
|
||
|
|
size = largePageMinimum();
|
||
|
|
if (size == 0 || (size & (size - 1)) != 0)
|
||
|
|
return;
|
||
|
|
g_LargePageSize = size;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void *BigAlloc(size_t size)
|
||
|
|
{
|
||
|
|
if (size == 0)
|
||
|
|
return 0;
|
||
|
|
#ifdef _SZ_ALLOC_DEBUG
|
||
|
|
fprintf(stderr, "\nAlloc_Big %10d bytes; count = %10d", size, g_allocCountBig++);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef _7ZIP_LARGE_PAGES
|
||
|
|
if (g_LargePageSize != 0 && g_LargePageSize <= (1 << 30) && size >= (1 << 18))
|
||
|
|
{
|
||
|
|
void *res = VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSize - 1)),
|
||
|
|
MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
|
||
|
|
if (res != 0)
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
|
||
|
|
}
|
||
|
|
|
||
|
|
void BigFree(void *address)
|
||
|
|
{
|
||
|
|
#ifdef _SZ_ALLOC_DEBUG
|
||
|
|
if (address != 0)
|
||
|
|
fprintf(stderr, "\nFree_Big; count = %10d", --g_allocCountBig);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (address == 0)
|
||
|
|
return;
|
||
|
|
VirtualFree(address, 0, MEM_RELEASE);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|