Parallel 中的工厂模式，从静态方法返回 class 的新实例

Question

我正在为一个 dll 写一个包装器。我正在使用工厂模式和经理 class 进行配置。

public sealed class Manager {
    private static readonly factory = new Factory();

    //prevents the default instance from being instantiated
    private Manager(){}

    public static IFoo GetMyIFoo(IParam param) {
        return factory.GetMyIFoo(param);
    }
}

然后我的工厂处理实例化配置：

public class Factory {
    public IFoo GetMyIFoo(IParam param) {
        IFoo foo = new Foo(param);
        foo.SetConfiguration(this.Configuration, this);
        return foo;
    }
}

在我的并行 foreach 中：

Parallel.ForEach(fooThings, (fooThing, state) => {
    using(var foo = Manager.GetMyIFoo(fooThing)) {
        foo.MyDllMethods(); //throws an error in parallel
    }
});

我的代码在 vanilla foreach 中运行良好，但是当运行在 Parallel.ForEach 下时我得到 AccessViolationException:

Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

如果我使用 F10 逐步解决错误，我从 DLL 本身得到最好的线索：

You can operate on an instance only in the thread which created it.

发生了什么事？

Answer 1

正如我在评论中所说，foo.SetConfiguration(this.Configuration, this);我认为 'this' 是问题所在。您正在与另一个线程共享一个线程创建的实例，因为您在管理器中有一个静态变量

public sealed class Manager
    {
        //prevents the default instance from being instantiated
        private Manager() { }

        public static IFoo GetMyIFoo(IParam param)
        {

            Factory factory = new Factory();
            return factory.GetMyIFoo(param);
        }
    }

Parallel 中的工厂模式，从静态方法返回 class 的新实例

Factory pattern in Parallel, returning a new instance of a class from a static method

c#

multithreading

parallel.foreach