Лабораторная работа №42

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream.h>
#include <conio.h>
int main(int argc, char* argv[])
{	DWORD	address=0;
	LPVOID lpAllocAddr,l,add;
	MEMORYSTATUS memstat;
	GlobalMemoryStatus(&memstat);
	DWORD dwMemSize;
	MEMORY_BASIC_INFORMATION meminfo;
	DWORD dwBytes;
	int n=1;

		while(n!=0)
		{
			_SYSTEM_INFO S;
	GetSystemInfo(&S);
	printf("Page Size %d\n",S.dwPageSize);
	printf("Minimum Application Address: %\n",S.lpMinimumApplicationAddress);
	printf("Maximum Application Address: %p\n",S.lpMaximumApplicationAddress);
	printf("Allocation Granularity %d\n",S.dwAllocationGranularity);
		printf("\n\n\n\n1 - Memory status\n");
		printf("2 - Virtual allocation\n");
		printf("3 - Virtual query\n");
		printf("4 - Virtual free\n");
		printf("0 - Exit\n");
		scanf("%d",&n);
		switch(n)
		{

		case 0:
			exit(1);
		case 1:
			memstat.dwLength=sizeof(memstat);
			printf("Percent of memory in use: %u\n",memstat.dwMemoryLoad);
	printf("_________________________________________________________________\n");
    printf("Bytes of physical memory: %u\n",memstat.dwTotalPhys);
	printf("_________________________________________________________________\n");
    printf("Free physical memory bytes: %u\n",memstat.dwAvailPhys);
	printf("_________________________________________________________________\n");
    printf("Bytes of paging file: %u\n",memstat.dwTotalPageFile);
	printf("_________________________________________________________________\n");
    printf("Free bytes of paging file: %u\n",memstat.dwAvailPageFile);
	printf("_________________________________________________________________\n");
	printf("User bytes of address space: %u\n",memstat.dwTotalVirtual);
	printf("_________________________________________________________________\n");
	printf("Free user bytes: %u\n",memstat.dwAvailVirtual);
	printf("_________________________________________________________________\n");
			break;
		case 2:
			printf("---------------- function VirtualAlloc ------------------\n\n");
			printf("   Enter the size of memory to commit (bytes): ");
			cin >> dwMemSize;
			printf("enter address\n");
			scanf("%p",&address);
			printf("\n");
			l=(void*)address;
			printf("\n\n:: %p",l,"\n\n");
			lpAllocAddr = VirtualAlloc(l, dwMemSize, MEM_COMMIT, PAGE_READWRITE);
			if (lpAllocAddr==NULL) printf("Error: %u\n",GetLastError());
			else 
			
			printf("Memory reserved. Addres:  %p\n",lpAllocAddr);
			break;
		case 3:
			scanf("%p",&add);
			dwBytes = VirtualQuery((void*)add,&meminfo,sizeof(meminfo));
			printf("Range of pages in the virtual address space of the calling process: %u\n\n",dwBytes);
			printf("base address of region: %p\n",meminfo.BaseAddress);
			printf("allocation base address: %p\n",meminfo.AllocationBase);
			//printf("initial access protection: %p\n",meminfo.AllocationProtect);
			printf("size, in bytes, of region: %u\n",meminfo.RegionSize);
			//printf("committed, reserved, free: %u\n",meminfo.State);
			//printf("current access protection : %u\n",meminfo.Protect);
			//printf("type of pages : %u\n",meminfo.Type);
			if(meminfo.State & MEM_COMMIT)
				printf("Committed pages for which physical storage has been allocated\n");
			if(meminfo.State & MEM_FREE)
				printf("Free pages not accessible to the calling process and available to be allocated\n");
			if(meminfo.State & MEM_RESERVE)
				printf("Virtual address space is reserved without allocating any physical storage\n");
			break;
		case 4:
			printf("\n---------------- function VirtualFree  ------------------\n\n");
			if(!VirtualFree(lpAllocAddr, dwMemSize, MEM_DECOMMIT))	printf("Error: %u\n",GetLastError());
			else printf("Memory freed.\n");
			break;
		default:
			printf("Invalid number\n");
			break;

	}
}	getch();
	return 0;
}