在附加/设置ArraySegment protobuf网memcache的供应商失败 [英] Protobuf-net memcache provider fails on append/set ArraySegment

问题描述

我使用的是与protobuf网memcache的供应商protobuf网lib和我想要使用的memcache附加功能：

I'm using protobuf-net lib with protobuf-net memcache provider and I'm trying to use memcache append function:

var data = new ArraySegment<byte>(Encoding.UTF8.GetBytes("appendedString"));
var result = _memcache.ExecuteStore(StoreMode.Add, key, data);

和它抛出异常：

运行时遇到了致命的错误。该错误的地址   在0x63765a43，上线0xd58。错误code是0000005。本   错误可能是在CLR或在不安全或不可校验的错误   用户code部位。这个错误的常见来源包括用户   编组错误的COM-互操作或PInvoke的，这可能会损坏   叠加。

The runtime has encountered a fatal error. The address of the error was at 0x63765a43, on thread 0xd58. The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.

我已经做了一些调试，并找出发生时引发异常：

I've done some debug and find out place when that exception is raised:

/Meta/RuntimeTypeModel.cs：692：   （（元类型）类型[关键]）Serializer.Write（值，目标寄存器）;

/Meta/RuntimeTypeModel.cs: 692: ((MetaType)types[key]).Serializer.Write(value, dest);

下面值是ArraySegment我想设置为值， DEST 是ProtoBuf.ProtoWriter。

Here value is that ArraySegment which I want to set as value and dest is ProtoBuf.ProtoWriter.

有没有什么办法可以解决这个错误，或者，也许，我做错了什么。也许我只是单纯地需要存储不是一个ArraySegment，只是字符串，字符串追加给它呢？

Is there any way to fix that error or, maybe, I'm doing something wrong. Maybe I just simply need to store not an ArraySegment, but just string and append strings to it too?

推荐答案

嘿;老实说我从来没有测试过 ArraySegment＆LT; T＆GT; - 尽管CLR团队的用心，它根本没有使用所有的东西。我可以在一个非常简单的测试重现这样的：

Heh; in all honesty I've never tested ArraySegment<T> - despite the intentions of the CLR team, it simply isn't used all that much. I can reproduce this in a very simple test:

using ProtoBuf;
using System;
[ProtoContract]
class Foo
{
    [ProtoMember(1)]
    public ArraySegment<byte> Data { get; set; }
    static void Main()
    {
        var obj = new Foo { Data = new ArraySegment<byte>(new byte[] { 1, 2, 3 })};
        Serializer.PrepareSerializer<Foo>();
        var clone = Serializer.DeepClone(obj);
    }
}

我会加入到测试套件，并修复。

which I will add to the test suite, and fix.

现在，我建议：只存储字节[] ...（即不使用 ArraySegment＆LT; T＆GT; ）。这可能会定格在protobuf网的下一个版本。

For now, may I suggest: just store the byte[]... (i.e. don't use ArraySegment<T>). This will probably be fixed in the next build of protobuf-net.

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