【发布时间】：2012-07-29 04:08:55
【问题描述】：
我已经迈出了使用 WCF 开发 WINDOWS 服务托管计算引擎的第一步。该服务运行良好，但它似乎只为我的所有调用使用一个线程，但我需要它具有可扩展性并使用多线程。
忽略代码等中的所有跟踪，因为这是此应用程序的早期阶段。
它调用一些第三方软件 (COM)，在服务启动时将信息读入内存 (ThirdParty.Initialise(strInit))，然后每次调用 ProcessInformation 从给定的 XML 字符串返回计算结果。
到目前为止，无论我将 ServiceBehavior atts 设置为什么，也无论我使用多少单独的消费者，所有调用似乎都只使用一个线程 - 有人可以帮忙吗？
代码概览：
[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple, InstanceContextMode = InstanceContextMode.PerCall, UseSynchronizationContext = false)]
public class TestWCFService : ITestWCFService
{
private static ThirdPartyLib.ThirdPartyComClass ThirdParty;
private static bool initCalled = false;
private static int cntInit = 0;
private static int cntTrans = 0;
public TestWCFService()
{
if (ThirdParty == null)
{
ThirdParty = new ThirdPartyLib.ThirdPartyComClass();
}
}
public bool InitialiseThirdParty(string strInit, out string strError)
{
try
{
if (!initCalled)
{
cntInit++;
ThirdParty.Initialise(strInit);
initCalled = true;
}
strError = "Call Num " + cntInit;
return true;
}
catch (Exception ex)
{
strError = "ThirdParty.Initialise exception " + ex.Message + " 0n call number " + cntInit;
return false;
}
}
public bool ProcessInformation(string strRequestXML, int quoteMarker, out string strResponseXML, out string strError, out int quoteMarkerReturned)
{
try
{
cntTrans++;
quoteMarkerReturned = quoteMarker;
ThirdParty.ProcessInformation(strRequestXML, out strResponseXML);
strError = "Call Trans Num " + cntTrans;
return true;
}
catch (Exception ex)
{
strError = ex.Message + " On call trans num " + cntTrans;
strResponseXML = "Error";
quoteMarkerReturned = quoteMarker;
return false;
}
}
}
配置：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.web>
<compilation debug="true" />
</system.web>
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="TestServiceBinding" bypassProxyOnLocal="true"
useDefaultWebProxy="false">
<readerQuotas maxDepth="524288" maxStringContentLength="524288"
maxArrayLength="524288" maxBytesPerRead="524288" maxNameTableCharCount="524288" />
<reliableSession inactivityTimeout="00:30:00" enabled="true" />
</binding>
</wsHttpBinding>
<mexHttpBinding>
<binding name="MEXTestServiceBinding" openTimeout="00:02:00"
sendTimeout="00:02:00" />
</mexHttpBinding>
</bindings>
<services>
<service behaviorConfiguration="TestWcfServiceLibrary.TestWCFServiceBehavior"
name="TestWcfServiceLibrary.TestWCFService">
<endpoint address="" binding="wsHttpBinding" bindingConfiguration="TestServiceBinding"
name="" contract="TestWcfServiceLibrary.ITestWCFService">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" bindingConfiguration="MEXTestServiceBinding"
contract="IMetadataExchange" />
<host>
<baseAddresses>
<add baseAddress="http://localhost:8731/Design_Time_Addresses/TestWcfServiceLibrary/TestWCFService/" />
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="TestWcfServiceLibrary.TestWCFServiceBehavior">
<serviceMetadata httpGetEnabled="True"/>
<serviceThrottling maxConcurrentCalls="100" maxConcurrentSessions="100" maxConcurrentInstances="100"/>
<serviceDebug includeExceptionDetailInFaults="False" />
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
</configuration>
【问题讨论】：
-
你怎么知道只使用了一个线程？我猜您的第三方 COM 组件是单元线程的，因此具有线程亲和性，因此无论服务实现使用多少 .NET 线程，它们都必须排队才能使用唯一的特定 STA 线程能够调用 COM 对象。
标签： c# .net multithreading wcf self-hosting