主机性能监控之wmi 获取系统信息及内存性能信息

标题: 主机性能监控之wmi 获取系统信息及内存性能信息
作者: itdef
链接: http://www.cnblogs.com/itdef/p/3990240.html

欢迎转帖请保持文本完整并注明出处

这里参考了http://www.cnblogs.com/lxcsmallcity/archive/2009/10/11/1580803.html

使用了PYTHON 和 vc 进行了调用WMI的代码编写

通过搜索和查看MSDN 可以找到WMI的基本用法

其实主要是WMI接口的初始化使用释放的过程

然后就是查找MSDN各个Win32_OperatingSystem Win32_Process等的结构的说明进行相关信息的获取

这里先介绍Win32_OperatingSystem的用法

Win32_OperatingSystem结构(来自MSDN)

class Win32_OperatingSystem : CIM_OperatingSystem
{
  string BootDevice;
  string BuildNumber;
  string BuildType;
  string Caption;
  string CodeSet;
  string CountryCode;
  string CreationClassName;
  string CSCreationClassName;
  string CSDVersion;
  string CSName;
  sint16 CurrentTimeZone;
  boolean DataExecutionPrevention_Available;
  boolean DataExecutionPrevention_32BitApplications;
  boolean DataExecutionPrevention_Drivers;
  uint8 DataExecutionPrevention_SupportPolicy;
  boolean Debug;
  string Description;
  boolean Distributed;
  uint32 EncryptionLevel;
  uint8 ForegroundApplicationBoost;
  uint64 FreePhysicalMemory;
  uint64 FreeSpaceInPagingFiles;
  uint64 FreeVirtualMemory;
  datetime InstallDate;
  uint32 LargeSystemCache;
  datetime LastBootUpTime;
  datetime LocalDateTime;
  string Locale;
  string Manufacturer;
  uint32 MaxNumberOfProcesses;
  uint64 MaxProcessMemorySize;
  string MUILanguages[];
  string Name;
  uint32 NumberOfLicensedUsers;
  uint32 NumberOfProcesses;
  uint32 NumberOfUsers;
  uint32 OperatingSystemSKU;
  string Organization;
  string OSArchitecture;
  uint32 OSLanguage;
  uint32 OSProductSuite;
  uint16 OSType;
  string OtherTypeDescription;
  Boolean PAEEnabled;
  string PlusProductID;
  string PlusVersionNumber;
  boolean Primary;
  uint32 ProductType;
  uint8 QuantumLength;
  uint8 QuantumType;
  string RegisteredUser;
  string SerialNumber;
  uint16 ServicePackMajorVersion;
  uint16 ServicePackMinorVersion;
  uint64 SizeStoredInPagingFiles;
  string Status;
  uint32 SuiteMask;
  string SystemDevice;
  string SystemDirectory;
  string SystemDrive;
  uint64 TotalSwapSpaceSize;
  uint64 TotalVirtualMemorySize;
  uint64 TotalVisibleMemorySize;
  string Version;
  string WindowsDirectory;
};

初始化WMI 连接查询其中各个元素就可以获取信息

代码如下:

  1 // WMI_Sample.cpp : 定义控制台应用程序的入口点。
  2 //
  3 
  4 #include "stdafx.h"
  5 #include <iostream>
  6 #include <iomanip>
  7 #include <atlstr.h>
  8 #include <comutil.h>
  9 #include <comdef.h>  
 10 #include <Wbemidl.h>  
 11 
 12 using namespace std;
 13 
 14 #pragma comment(lib, "wbemuuid.lib")  
 15 #pragma comment(lib, "comsuppw.lib")
 16 
 17 
 18 
 19 //===================================================
 20 class CMyWMI{
 21     IWbemLocator *pLoc_;  
 22     IWbemServices *pSvc_;  
 23 
 24     void GetInfo(WCHAR* wszQueryInfo,IWbemClassObject *pclsObj);
 25 public:
 26     CMyWMI():pLoc_(NULL),pSvc_(NULL){}
 27     ~CMyWMI(){ ClearWMI(); }
 28     bool InitWMI();
 29     bool ClearWMI();
 30     bool QuerySystemInfo();
 31 
 32 };
 33 
 34 
 35 void CMyWMI::GetInfo(WCHAR* wszQueryInfo,IWbemClassObject *pclsObj)
 36 {
 37     if(wszQueryInfo == NULL || NULL == pclsObj)
 38         return;
 39     VARIANT vtProp;  
 40     char* lpszText = NULL;
 41 
 42     HRESULT hr = pclsObj->Get(wszQueryInfo, 0, &vtProp, 0, 0);  
 43     lpszText = _com_util::ConvertBSTRToString(V_BSTR(&vtProp));
 44     printf_s("%s\n", lpszText);
 45 
 46     delete[] lpszText;
 47     VariantClear(&vtProp); 
 48 }
 49 
 50 
 51 bool CMyWMI::QuerySystemInfo()
 52 {
 53     HRESULT hres; //定义COM调用的返回  
 54     IEnumWbemClassObject* pEnumerator = NULL;  
 55     bool bRet = false;
 56 
 57     try{
 58         hres = pSvc_->ExecQuery(  
 59             bstr_t("WQL"),     
 60             bstr_t("SELECT * FROM Win32_OperatingSystem"),  
 61             WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,   
 62             NULL,  
 63             &pEnumerator);  
 64 
 65         if (FAILED(hres))  
 66         {  
 67             throw exception("ExecQuery() error.");
 68         }  
 69 
 70         while (pEnumerator)  
 71         {
 72             IWbemClassObject *pclsObj;  
 73             ULONG uReturn = 0;  
 74 
 75             HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,   
 76                 &pclsObj, &uReturn);  
 77             if(0 == uReturn)  
 78             {  
 79                 break;  
 80             }  
 81         
 82             GetInfo(L"BootDevice",pclsObj);
 83             GetInfo(L"Caption",pclsObj);
 84             GetInfo(L"Manufacturer",pclsObj);
 85             GetInfo(L"CSName",pclsObj);
 86             GetInfo(L"WindowsDirectory",pclsObj);
 87             GetInfo(L"SystemDirectory",pclsObj);
 88             GetInfo(L"TotalVisibleMemorySize",pclsObj);
 89             GetInfo(L"FreePhysicalMemory",pclsObj);
 90 
 91             pclsObj->Release(); 
 92         }
 93     
 94 
 95     }catch(exception& e)
 96     {
 97         cout << e.what() << endl;
 98         if(pEnumerator != NULL)
 99         {
100             pEnumerator->Release(); 
101             pEnumerator = NULL;
102         }
103         return bRet;
104     }
105 
106     
107     if(pEnumerator != NULL)
108     {
109         pEnumerator->Release(); 
110         pEnumerator = NULL;
111     }
112 
113     bRet = true;
114     return bRet;
115 }
116 
117 
118 bool CMyWMI::ClearWMI()
119 {    
120     bool bRet = false;
121 
122     if( NULL != pSvc_)
123         pSvc_->Release();  
124 
125     if(pLoc_ != NULL )
126         pLoc_->Release();
127 
128 
129     CoUninitialize();
130     bRet = true;
131     return bRet;
132 }
133 
134 
135 
136 bool CMyWMI::InitWMI()
137 {
138     HRESULT hres; //定义COM调用的返回  
139     bool bRet = false;
140 
141     try{
142         hres =  CoInitializeEx(0, COINIT_MULTITHREADED);   
143         if (FAILED(hres))  
144         {  
145             throw exception("CoInitializeEx() error.");
146         }  
147 
148         hres =  CoInitializeSecurity(  
149             NULL,   
150             -1,                          // COM authentication  
151             NULL,                        // Authentication services  
152             NULL,                        // Reserved  
153             RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication   
154             RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation    
155             NULL,                        // Authentication info  
156             EOAC_NONE,                   // Additional capabilities   
157             NULL                         // Reserved  
158             );
159 
160         if (FAILED(hres))  
161         {  
162             throw exception("CoInitializeEx() error."); 
163         }  
164 
165         hres = CoCreateInstance(  
166             CLSID_WbemLocator,  
167             0,   
168             CLSCTX_INPROC_SERVER,   
169             IID_IWbemLocator, (LPVOID *) &pLoc_);  
170 
171         if (FAILED(hres))  
172         {  
173             throw exception("CoCreateInstance() error."); 
174         }  
175 
176         // to make IWbemServices calls.  
177         hres = pLoc_->ConnectServer(  
178             _bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespace  
179             NULL,                    // User name. NULL = current user  
180             NULL,                    // User password. NULL = current  
181             0,                       // Locale. NULL indicates current  
182             NULL,                    // Security flags.  
183             0,                       // Authority (e.g. Kerberos)  
184             0,                       // Context object   
185             &pSvc_                    // pointer to IWbemServices proxy  
186             );  
187 
188         if (FAILED(hres))  
189         {  
190             throw exception("ConnectServer() error."); 
191         }
192 
193         hres = CoSetProxyBlanket(  
194             pSvc_,                        // Indicates the proxy to set  
195             RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx  
196             RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx  
197             NULL,                        // Server principal name   
198             RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx   
199             RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx  
200             NULL,                        // client identity  
201             EOAC_NONE                    // proxy capabilities   
202             );  
203 
204         if (FAILED(hres))  
205         {  
206             throw exception("CoSetProxyBlanket() error.");
207         }  
208 
209 
210     }catch(exception& e)
211     {
212         cout << e.what() << endl;
213         return bRet;
214     }
215     
216     bRet = true;
217     return bRet;
218 }
219 
220 //=========================================================
221 int _tmain(int argc, _TCHAR* argv[])
222 {
223     CMyWMI myWMI;
224         
225     myWMI.InitWMI();
226     myWMI.QuerySystemInfo();
227 
228     return 0;
229 }

View Code

python 代码:

#!/usr/bin/env python 
# -*- coding: cp936 -*-
 
import wmi 
import os 
import sys 
import platform 
import time


def sys_version():  
    c = wmi.WMI () 
    #获取操作系统版本 
    for sys in c.Win32_OperatingSystem(): 
        print "Version:%s" % sys.Caption.encode("UTF8"),"Vernum:%s" % sys.BuildNumber 
        print sys.OSArchitecture.encode("UTF8")#系统是32位还是64位的 
        print sys.NumberOfProcesses #当前系统运行的进程总数
        print sys.WindowsDirectory 
        print sys.SystemDirectory
        print "system total memory: " ,sys.TotalVisibleMemorySize
        print "system free memory: " ,sys.FreePhysicalMemory


def main(): 
    sys_version() 
    
if __name__ == '__main__': 
    main()
    #print platform.system()

View Code

效果图