ace.txt

用于实现虚拟内存的管理的C语言源代码程序

#include <windows.h>
#include <stdio.h>
#include <process.h>
#include <time.h>

unsigned _stdcall simulator(void *);
unsigned _stdcall inspector(void *);
LPVOID BASE_PTR;
int Actnum=0;


//
int main(int argc, char* argv[])
{
	unsigned  ThreadID[2];
	_beginthreadex(NULL,0,simulator,NULL,0,&ThreadID[0]);
	_beginthreadex(NULL,0,inspector,NULL,0,&ThreadID[1]);
	getchar();//输入回车即可终止程序；
	return 0;
}


//
unsigned _stdcall simulator(void *)
{
 DWORD OldProtect;
 int randnum;

 printf("Now the simulator procedure has been started.\n");

 srand( (unsigned)time( NULL ) );

 //
 while(1)
 {
   Sleep(500);
   while (Actnum!=0)
   {
    Sleep(500);//
   }
   randnum=7&rand();
   switch(randnum)//
			
   {
     case 0:
      if (BASE_PTR=VirtualAlloc(NULL,1024*32,MEM_RESERVE|MEM_COMMIT,
							  PAGE_READWRITE))
	   {
		Actnum=1;
	   }
	  break;
     case 1:
      if (VirtualFree(BASE_PTR,1024*32,MEM_DECOMMIT))
       {
	    Actnum=2;
	   }
	  break;
     case 2:
      if (VirtualFree(BASE_PTR,0,MEM_RELEASE))
	   {
	    Actnum=3;
	   }
	  break;
     case 3:
      if (VirtualProtect(BASE_PTR,1024*32,PAGE_READONLY,&OldProtect))
       {
	    Actnum=4;
	   }
	  break;
     case 4:
      if (VirtualLock(BASE_PTR,1024*12))
       {
	    Actnum=5;
	   }
	  break;
     case 5:
      if (BASE_PTR=VirtualAlloc(NULL,1024*32,MEM_RESERVE,PAGE_READWRITE))
	   {
	    Actnum=6;
	   }
	  break;
     default:
	  break;
   }
 }
   return 0;
}


//
unsigned _stdcall inspector(void *)
{
int  QuOut=0;	
char para1[3000];
MEMORYSTATUS Vmeminfo;
char tempstr[100];
MEMORY_BASIC_INFORMATION inspectorinfo1;
int structsize = sizeof(MEMORY_BASIC_INFORMATION);

printf("Hi , now inspector begin to work\n");
//

while(1)
{
 Sleep(1000);
 if(Actnum!=0)
 {
  //
  switch(Actnum)
  {
   case 1:
    memset (&inspectorinfo1, 0, structsize);
    VirtualQuery((LPVOID)BASE_PTR,&inspectorinfo1,structsize);
    strcpy(para1,"目前执行动作：虚存的保留与提交\n");
    break;
   case 2:
    memset (&inspectorinfo1, 0, structsize);
    VirtualQuery((LPVOID)BASE_PTR,&inspectorinfo1,structsize);
    strcpy(para1,"目前执行动作：虚存的除配\n");
    break;
   case 3:
    memset (&inspectorinfo1, 0, structsize);
    VirtualQuery((LPVOID)BASE_PTR,&inspectorinfo1,structsize);
    strcpy(para1,"目前执行动作：虚存的除配并释放虚存空间\n");
    break;
   case 4:
    memset (&inspectorinfo1, 0, structsize);
    VirtualQuery((LPVOID)BASE_PTR,&inspectorinfo1,structsize);
    strcpy(para1,"目前执行动作：改变虚拟内存页的保护\n");
    break;
   case 5:
    memset (&inspectorinfo1, 0, structsize);
    VirtualQuery((LPVOID)BASE_PTR,&inspectorinfo1,structsize);
    strcpy(para1,"目前执行动作：锁定虚拟内存页\n");
    break;
   case 6:
    memset (&inspectorinfo1, 0, structsize);
    VirtualQuery((LPVOID)BASE_PTR,&inspectorinfo1,structsize);
    strcpy(para1,"目前执行动作：虚存的保留\n");
    break;
   default: 
    break;
  }

  //

  sprintf(tempstr,"开始地址：0X%x\n",inspectorinfo1.BaseAddress);
  strcat(para1,tempstr);
  sprintf(tempstr,"区块大小(目前指针处向前同一属性的块)：0X%x\n",
		inspectorinfo1.RegionSize);
  strcat(para1,tempstr);
  sprintf(tempstr,"目前状态：0X%x\n",inspectorinfo1.State);
  strcat(para1,tempstr);
  sprintf(tempstr,"分配时访问保护:0X%x\n",inspectorinfo1.AllocationProtect);
  strcat(para1,tempstr);
  sprintf(tempstr,"当前访问保护:0X%x\n",inspectorinfo1.Protect);
  strcat(para1,tempstr);
  strcat(para1,"(状态:10000代表未分配 ;1000代表提交 ;2000代表保留; )\n");
  strcat(para1,"(保护方式:0代表其它;1代表禁止访问;2代表只读;4代表读写;\n10代表可执");
  strcat(para1," 行;20代表可读和执行; 40代表可读写和执行;)\n*******************\n");

  //
  GlobalMemoryStatus(&Vmeminfo);
  strcat(para1,"当前整体存储统计如下\n");
  sprintf(tempstr,"物理内存总数：%d(BYTES)\n",Vmeminfo.dwTotalPhys);
  strcat(para1,tempstr);
  sprintf(tempstr,"可用物理内存数：%d(BYTES)\n",Vmeminfo.dwAvailPhys);
  strcat(para1,tempstr);
  sprintf(tempstr,"页面文件总数：%d(BYTES)\n",Vmeminfo.dwTotalPageFile);
  strcat(para1,tempstr);
  sprintf(tempstr,"可用页面文件数：%d(BYTES)\n",Vmeminfo.dwAvailPageFile);
  strcat(para1,tempstr);
  sprintf(tempstr,"虚存空间总数：%d(BYTES)\n",Vmeminfo.dwTotalVirtual);
  strcat(para1,tempstr);
  sprintf(tempstr,"可用虚存空间数：%d(BYTES)\n",Vmeminfo.dwAvailVirtual);
  strcat(para1,tempstr);
  sprintf(tempstr,"物理存储使用负荷:%%%d\n\n\n\n",Vmeminfo.dwMemoryLoad);
  strcat(para1,tempstr);
  printf("%s",para1);

  Actnum=0;
  Sleep(500);
 } 
}
return 0;
}