获取CPU和内存呢信息

  1 #include <stdio.h>   
  2 #include <stdlib.h>   
  3 #include <winsock.h>   
  4 #pragma comment(lib, "ws2_32.lib")   
  5 #include <nb30.h>
  6 #pragma comment(lib,"NETAPI32.LIB")
  7 #include <string>
  8 #include <iostream>
  9 using namespace std;
 10 #include "psapi.h"
 11 #pragma comment(lib, "Psapi.lib") 
 12 
 13 #include "hardcard.h"
 14 //------获取硬盘-----------------------------------------------------------------------
 15 
 16 typedef BOOL(WINAPI *PGETDISKFREESPACEEX)(LPCSTR,
 17     PULARGE_INTEGER, PULARGE_INTEGER, PULARGE_INTEGER);
 18 
 19 BOOL MyGetDiskFreeSpaceEx(LPCSTR pszDrive, float *out)
 20 {
 21     PGETDISKFREESPACEEX pGetDiskFreeSpaceEx;
 22     __int64 i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
 23 
 24     DWORD dwSectPerClust,
 25         dwBytesPerSect,
 26         dwFreeClusters,
 27         dwTotalClusters;
 28 
 29     BOOL fResult;
 30 
 31     pGetDiskFreeSpaceEx = (PGETDISKFREESPACEEX) GetProcAddress(
 32         GetModuleHandle("kernel32.dll"),
 33         "GetDiskFreeSpaceExA");
 34 
 35     if (pGetDiskFreeSpaceEx)
 36     {
 37         // printf("
1.%x
",pGetDiskFreeSpaceEx);
 38         fResult = pGetDiskFreeSpaceEx(pszDrive,
 39             (PULARGE_INTEGER)&i64FreeBytesToCaller,
 40             (PULARGE_INTEGER)&i64TotalBytes,
 41             (PULARGE_INTEGER)&i64FreeBytes);
 42 
 43         // Process GetDiskFreeSpaceEx results.
 44         if (fResult)
 45         {
 46             //  printf("剩余字节 = %I64d
", i64FreeBytes);
 47             //  printf("总共字节 = %I64d
", i64TotalBytes);
 48             double f = i64FreeBytes, t = i64TotalBytes;
 49             for (int i = 0; i < 3; ++i)
 50             {
 51                 f /= 1024;
 52                 t /= 1024;
 53             }
 54             out[0] = f;
 55             out[1] = t;
 56             //   printf("%0.2fG,", f);
 57             //    printf("%0.2fG", t);
 58         }
 59         ///  printf("
");
 60         return fResult;
 61     }
 62     else
 63     {
 64         //printf("
2.%x
",pGetDiskFreeSpaceEx);
 65         fResult = GetDiskFreeSpaceA(pszDrive,
 66             &dwSectPerClust,
 67             &dwBytesPerSect,
 68             &dwFreeClusters,
 69             &dwTotalClusters);
 70 
 71         // Process GetDiskFreeSpace results.
 72         if (fResult)
 73         {
 74             // printf("剩余字节 = I64d",dwFreeClusters*dwSectPerClust*dwBytesPerSect);
 75         }
 76         //printf("
");
 77         return fResult;
 78     }
 79 }
 80 __int64 CompareFileTime(FILETIME time1, FILETIME time2)
 81 {
 82     __int64 a = time1.dwHighDateTime << 32 | time1.dwLowDateTime;
 83     __int64 b = time2.dwHighDateTime << 32 | time2.dwLowDateTime;
 84 
 85     return   (b - a);
 86 }
 87 void getcpumemory(int *_cpu, int *_memory)
 88 {
 89     HANDLE hEvent;
 90     BOOL res;
 91 
 92     FILETIME preidleTime;
 93     FILETIME prekernelTime;
 94     FILETIME preuserTime;
 95 
 96     FILETIME idleTime;
 97     FILETIME kernelTime;
 98     FILETIME userTime;
 99     MEMORYSTATUS memo;
100 
101     res = GetSystemTimes(&idleTime, &kernelTime, &userTime);
102 
103     preidleTime = idleTime;
104     prekernelTime = kernelTime;
105     preuserTime = userTime;
106 
107     hEvent = CreateEvent(NULL, FALSE, FALSE, NULL); // 初始值为 nonsignaled ，并且每次触发后自动设置为nonsignaled
108 
109     //while (1)
110     {
111 
112 
113         WaitForSingleObject(hEvent, 500); //等待500毫秒
114         res = GetSystemTimes(&idleTime, &kernelTime, &userTime);
115 
116         int idle = CompareFileTime(preidleTime, idleTime);
117         int kernel = CompareFileTime(prekernelTime, kernelTime);
118         int user = CompareFileTime(preuserTime, userTime);
119 
120         int cpu = (kernel + user - idle) * 100 / (kernel + user);//（总的时间-空闲时间）/总的时间=占用cpu的时间就是使用率
121         int cpuidle = (idle) * 100 / (kernel + user);
122         GlobalMemoryStatus(&memo);
123         //system("cls");
124         cout << "CPU" << cpu << "%,";// << "      CPU空闲率:" <<cpuidle << "%" <<endl;      
125         cout << "内存" << memo.dwMemoryLoad << "%;";
126         preidleTime = idleTime;
127         prekernelTime = kernelTime;
128         preuserTime = userTime;
129         *_cpu = cpu;
130         *_memory = memo.dwMemoryLoad;
131         // Sleep(500); 
132     }
133 
134 }

1 #pragma once
2 
3 BOOL MyGetDiskFreeSpaceEx(LPCSTR pszDrive, float *out);
4 void getcpumemory(int *_cpu, int *_memory);

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原文地址：https://www.cnblogs.com/Zblogs/p/3356566.html