真正可用的获取任意进程的内存使用率 和任务管理器一模一样

void PrintMemCpuInfo() { printf("是否显示每个进程内存和cpu信息（Y/N）："); int cChar = getch();

if( cChar != 'Y' && cChar != 'y' ) return ;

printf("\n%-30s%-30s%-30s\n","进程","mem-useage","cpu-useage");

/*PERFORMANCE_INFORMATION pif; memset(&pif,0,sizeof(pif)); if( GetPerformanceInfo(&pif,sizeof(pif)) == FALSE) { printf("error-GetPerformanceInfo:%d\n",GetLastError()); return; }*/ SYSTEM_INFO si; GetSystemInfo(&si);

OSVERSIONINFO osvi;//定义OSVERSIONINFO数据结构对象 memset(&osvi, 0, sizeof(OSVERSIONINFO));//开空间 osvi.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);//定义大小 GetVersionEx (&osvi);//获得版本信息

//typedef BOOL (WINAPI * JKQueryWorkingSet)(HANDLE,PVOID,DWORD); //JKQueryWorkingSet jkQueryWorkSet = NULL; //if (osvi.dwMajorVersion>=6) //vista above //{ // HMODULE hK32 = LoadLibraryA("Psapi.dll"); // jkQueryWorkSet = (JKQueryWorkingSet)GetProcAddress(hK32,"QueryWorkingSet"); //} //else //{ // HMODULE hPsapi = LoadLibraryA("Psapi.dll"); // jkQueryWorkSet = (JKQueryWorkingSet)GetProcAddress(hPsapi,"QueryWorkingSet"); //}

HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0); if (hSnap) { PROCESSENTRY32 entry={sizeof entry}; for (BOOL bState = Process32First(hSnap,&entry);bState;bState=Process32Next(hSnap,&entry)) { HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION|PROCESS_VM_READ,FALSE,entry.th32ProcessID); if (hProcess) { DWORD dwMemProcess = 0; //------------------------------------------------------------------------------- if (osvi.dwMajorVersion<6) { PROCESS_MEMORY_COUNTERS_EX procCnt; if( GetProcessMemoryInfo(hProcess,(PPROCESS_MEMORY_COUNTERS)&procCnt,sizeof(procCnt)) ) { dwMemProcess = procCnt.WorkingSetSize*1.0f/1024; if(dwMemProcess==0) dwMemProcess = 1; _tprintf("%-30s%u KB\n",entry.szExeFile,dwMemProcess); } } else { //------------------------------------------------------------------------------- PSAPI_WORKING_SET_INFORMATION workSet; memset(&workSet,0,sizeof(workSet)); BOOL bOk = QueryWorkingSet(hProcess,&workSet,sizeof(workSet)); if(bOk || ( !bOk && GetLastError() == ERROR_BAD_LENGTH) ) { int nSize = sizeof(workSet.NumberOfEntries) + workSet.NumberOfEntries*sizeof(workSet.WorkingSetInfo); char* pBuf = new char[nSize]; if (pBuf) { QueryWorkingSet(hProcess,pBuf,nSize); PSAPI_WORKING_SET_BLOCK* pFirst = (PSAPI_WORKING_SET_BLOCK*)(pBuf+sizeof(workSet.NumberOfEntries)); DWORD dwMem = 0; for (ULONG_PTR nMemEntryCnt = 0;nMemEntryCnt<workSet.NumberOfEntries;nMemEntryCnt++,pFirst++) { if(pFirst->Shared==0) dwMem += si.dwPageSize; } delete pBuf;

if(workSet.NumberOfEntries>0) { dwMemProcess = dwMem/1024; _tprintf("%-30s%u KB\n", entry.szExeFile,dwMemProcess); } } } else { printf("error-QueryWorkingSet:%d\n",GetLastError()); } }

CloseHandle(hProcess); } else { _tprintf(TEXT("error-process:%s打开失败\n"),entry.szExeFile); } } CloseHandle(hSnap); }

}

//添加以下头文件

#include <Windows.h>

#include <TlHelp32.h>

#include <Psapi.h>

#pragma comment(lib,"Psapi.lib")