内存管理基础[1]

 
 


  
  
#include <stdio.h> 

  
  
#include <Windows.h> 

  
  
#include <tchar.h> 

  
  
/*Code By Pnig0s1992*/ 

  
  
int main(void){ 

  
  
    SIZE_T sizeVirtual = 4000; 

  
  
    LPVOID lpRound = (LPVOID)0x100000FF; 

  
  
    MEMORY_BASIC_INFORMATION mbi; 

  
  
 

  
  
    LPVOID lpAddress = VirtualAlloc(lpRound,sizeVirtual,MEM_COMMIT|MEM_RESERVE,PAGE_READWRITE); 

  
  
 

  
  
    if(lpAddress == NULL){ 

  
  
        printf("内存分配失败:%d\n",GetLastError()); 

  
  
        return 1; 

  
  
    } 

  
  
 

  
  
    printf("Alloc:MEM_COMMIT|MEM_RESERVE\n"); 

  
  
    CopyMemory(lpAddress,"pnig0s1992",strlen("pnig0s1992")); 

  
  
 

  
  
    printf("分配,复制成功,地址:0x%.8x\n内容:%s\n",lpAddress,lpAddress); 

  
  
 

  
  
    VirtualQuery(lpAddress,&mbi,sizeof(mbi)); 

  
  
 

  
  
    printf("使用VirtualQuery()获得信息:\n"); 

  
  
    printf("BaseAddress:0x%.8x\tAllocationBase:0x%.8x\tAllocationProtect:0x%.8x\tReginSize:%u\tState:0x%.8x\tProtect:0x%.8x\tType:0x%.8x\n",mbi.BaseAddress,mbi.AllocationBase 

  
  
        ,mbi.AllocationProtect 

  
  
        ,mbi.RegionSize,mbi.State 

  
  
        ,mbi.Protect,mbi.Type); 

  
  
    printf("Free:DEDOMMIT.\n"); 

  
  
 

  
  
    if(!VirtualFree(lpRound,sizeVirtual,MEM_DECOMMIT)){ 

  
  
        printf("Virtual free error:%d\n",GetLastError()); 

  
  
        return 1; 

  
  
    } 

  
  
    VirtualQuery(lpAddress,&mbi,sizeof(mbi)); 

  
  
 

  
  
    printf("使用VirtualQuery()获得信息:\n"); 

  
  
    printf("BaseAddress:0x%.8x\tAllocationBase:0x%.8x\tAllocationProtect:0x%.8x\tReginSize:%u\tState:0x%.8x\tProtect:0x%.8x\tType:0x%.8x\n",mbi.BaseAddress,mbi.AllocationBase 

  
  
        ,mbi.AllocationProtect 

  
  
        ,mbi.RegionSize,mbi.State 

  
  
        ,mbi.Protect,mbi.Type); 

  
  
    printf("Free:RELEASE.\n"); 

  
  
 

  
  
    if(!VirtualFree(lpAddress,0,MEM_RELEASE)){ 

  
  
        printf("Virtual free error:%d\n",GetLastError()); 

  
  
        return 1; 

  
  
    } 

  
  
    system("pause"); 

  
  
    return 0; 

  
  
} 
 
 

本文转hackfreer51CTO博客，原文链接：http://blog.51cto.com/pnig0s1992/625126，如需转载请自行联系原作者