1 /* 2 通过性能计数器获取某个进程的CPU使用率、内存使用量、磁盘读写速率 3 使用性能计数器中的Process实现 4 */ 5 6 7 #pragma comment(lib,"Pdh.lib") 8 #include <stdio.h> 9 #include <stdlib.h> 10 #include <malloc.h> 11 #include <locale.h> 12 #include <Pdh.h> 13 #include <string> 14 #include <pdhmsg.h> 15 #include <tchar.h> 16 #include <windows.h> 17 18 int nCPU; 19 using std::string; 20 using namespace std; 21 int GetData() 22 { 23 HQUERY query; 24 double dbVal; 25 long iVal; 26 //PDH_STATUS status = PdhOpenQuery(NULL, NULL, &query); 27 PDH_STATUS status = PdhOpenQuery(0, 0, &query); 28 if (ERROR_SUCCESS != status) 29 { 30 MessageBox(NULL, TEXT("打开失败"), TEXT(""), MB_OK); 31 return -1; 32 33 } 34 35 HCOUNTER cntProcessCPU, cntProcessMemory; 36 HCOUNTER cntProcessDiskRead, cntProcessDiskWrite; 37 status = PdhAddCounter(query, "\Process(_Total)\% Processor Time", NULL, &cntProcessCPU); 38 status = PdhAddCounter(query, "\Process(_Total)\Working Set - Private", NULL, &cntProcessMemory); 39 status = PdhAddCounter(query, "\Process(_Total)\IO Read Bytes/sec", NULL, &cntProcessDiskRead); 40 status = PdhAddCounter(query, "\Process(_Total)\IO Write Bytes/sec", NULL, &cntProcessDiskWrite); 41 printf("111"); 42 43 if (ERROR_SUCCESS != status) 44 { 45 MessageBox(NULL, TEXT("添加失败"), TEXT(""), MB_OK); 46 return -1; 47 } 48 49 status = PdhCollectQueryData(query); 50 Sleep(500); //这里要有延时不然结果相当不准确 51 status = PdhCollectQueryData(query); 52 if (ERROR_SUCCESS != status) 53 { 54 MessageBox(NULL, TEXT("数据请求失败"), TEXT(""), MB_OK); 55 return -1; 56 } 57 58 PDH_FMT_COUNTERVALUE pdhValue; 59 DWORD dwValue; 60 61 status = PdhGetFormattedCounterValue(cntProcessCPU, PDH_FMT_DOUBLE, &dwValue, &pdhValue); 62 if (ERROR_SUCCESS != status) 63 { 64 MessageBox(NULL, TEXT("得到数据失败"), TEXT(""), MB_OK); 65 return -1; 66 } 67 else 68 { 69 dbVal = pdhValue.doubleValue; 70 printf("Process-CPU： %3d%% ", (int)(dbVal / nCPU + 0.5)); 71 } 72 73 status = PdhGetFormattedCounterValue(cntProcessMemory, PDH_FMT_DOUBLE, &dwValue, &pdhValue); 74 if (ERROR_SUCCESS != status) 75 { 76 MessageBox(NULL, TEXT("得到数据失败"), TEXT(""), MB_OK); 77 return -1; 78 } 79 else 80 { 81 dbVal = pdhValue.doubleValue; 82 printf("Process-Memory： %8dK ", (int)(dbVal / 1024)); 83 } 84 85 status = PdhGetFormattedCounterValue(cntProcessDiskRead, PDH_FMT_DOUBLE, &dwValue, &pdhValue); 86 if (ERROR_SUCCESS != status) 87 { 88 MessageBox(NULL, TEXT("得到数据失败"), TEXT(""), MB_OK); 89 return -1; 90 } 91 else 92 { 93 dbVal = pdhValue.doubleValue; 94 printf("Process-DiskRead：%8dK/s ", (int)(dbVal / 1024)); 95 } 96 97 status = PdhGetFormattedCounterValue(cntProcessDiskWrite, PDH_FMT_DOUBLE, &dwValue, &pdhValue); 98 if (ERROR_SUCCESS != status) 99 { 100 MessageBox(NULL, TEXT("得到数据失败"), TEXT(""), MB_OK); 101 return -1; 102 } 103 else 104 { 105 dbVal = pdhValue.doubleValue; 106 printf("Process-DiskWrite：%8dK/s ***************************************************************************** ", (int)(dbVal / 1024)); 107 } 108 109 PdhRemoveCounter(cntProcessCPU); 110 PdhRemoveCounter(cntProcessMemory); 111 PdhRemoveCounter(cntProcessDiskRead); 112 PdhRemoveCounter(cntProcessDiskWrite); 113 PdhCloseQuery(query); 114 } 115 116 117 int main() { 118 setlocale(LC_ALL, "chs"); 119 120 SYSTEM_INFO si; 121 GetSystemInfo(&si); 122 nCPU = si.dwNumberOfProcessors; 123 printf("hello"); 124 while (1) 125 { 126 Sleep(500); 127 GetData(); 128 } 129 system("pause"); 130 return 0; 131 }
参考https://blog.csdn.net/fengsuinanhan/article/details/73799791
我的运行出现错误 显示得到数据失败
修改参数tfb_manage_system 为_total即可运行成功