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[英]Cleaning up after variable declaration, initialization and unamanaged memory allocation
[英]Cleaning up after WMI call
我們似乎遇到了一個問題,即使用WMI調用獲取遠程計算機統計信息的應用程序本身無法正確清理。
呼叫的示例為:
public static ManagementObjectCollection getVMs(string target, ManagementObjectCollection collection)
{
ConnectionOptions options = new ConnectionOptions();
options.Authentication = System.Management.AuthenticationLevel.PacketPrivacy;
ManagementScope scope = new ManagementScope(string.Format("\\\\{0}\\root\\virtualization", target), options);
ManagementObjectSearcher searcher =
new ManagementObjectSearcher(scope, new ObjectQuery("SELECT * FROM MSVM_ComputerSystem WHERE ElementName like 'TS%'"));
try
{
ManagementObjectCollection ObjCollection = searcher.Get();
collection = ObjCollection;
return collection;
}
catch (Exception e)
{
IOModule.errorWrite(e);
IOModule.debugWrite(e.ToString());
}
return null;
}
這很有效,但是隨着時間的流逝,我們注意到這些遠程計算機報告了太多尚未關閉的打開的WMI調用。
其中代碼里面我應該用using
嗎? Management
哪一部分需要清理? 是ManagementScope
ManagementObjectSearcher
還是ManagementObjectCollection
?
最有可能是返回的集合(根據類聲明判斷):
public class ManagementObjectCollection : ICollection, IEnumerable, IDisposable
using
應該在調用getVMs
的代碼中。
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