.NET Web服务

.NET Web服务 - 如何调用非托管C dll(.NET Web Service - How to call unmanaged C dll)

我需要从.NET Web服务（asmx或WCF）调用dll（非托管c）。

从Web服务调用dll很简单，并按预期工作。

但是，当我加载测试Web服务时出现问题。 （错误代码0xC0000374 - “内部错误，通常涉及堆损坏”）。

d4的所有者告诉我，如果同时发送2个或更多呼叫，则dll在多线程环境中不可靠。

在传统的Windows应用程序中，我通过实现单例类来保护dll来处理这个问题。 是否有推荐的方法在Web服务实现中实现此目的？

I have a requirement to call a dll (unmanaged c) from a .NET web service (asmx or WCF).

Calling the dll from the web service is straightforward and works as expected.

However, issues emerge when I load test the web service. (error code 0xC0000374 - "an internal error, typically involving heap corruption”).

I've been informed by the owner of the dll that the dll isn't reliable in a multi-threaded environment if 2 or more calls are sent at the same time.

In a traditional windows app, I'd deal with this by implementing a singleton class to protect the dll. Is there a recommended approach for achieving this in a web service implementation?

最满意答案

如果你只需要确保一次只有一个线程可以调用你的dll，你可以在lock语句中包含对它的任何访问：

public static class MyDllCalls { private static object _lockObject = new object(); public static int SomeCall() { lock (_lockObject) { return CallSomeFunctionInYourDll(); } } }

只有一个线程可以在给定时间保持锁定，因此这样可以防止多个线程并行进行调用。

If you only need to ensure that only one thread at a time can call your dll, you can wrap any access to it in lock statements:

public static class MyDllCalls { private static object _lockObject = new object(); public static int SomeCall() { lock (_lockObject) { return CallSomeFunctionInYourDll(); } } }

Only one thread can hold the lock at a given time, so this way you can prevent several threads from making calls in parallel.