跟踪从Erlang邮箱中消费消息的动作 [英] Tracing the action of consuming messages from mailbox in Erlang

问题描述

我在Erlang中浏览了 trace / 3 BIF的文档。但是，我所做的一个观察是，它不能用于跟踪消息从邮箱消费。当邮件被添加到进程的邮箱时，标记'receive'只会跟踪。

I went through the documentation of the trace/3 BIF in Erlang. However, one observation I have made is that it cannot be used for tracing the consuming of messages from the mailbox. The flag 'receive' only traces when messages are added to a process's mailbox.

有没有办法跟踪事件，例如使用接收从邮箱中读取？如果没有，是否有任何理由为什么这是不可能的？看起来很奇怪，人们可以在程序中跟踪大多数事件，并且从邮箱中读取消息是不可追溯的。

Is there any way one can trace events such as reading from the mailbox using the receive construct? If not, is there any reason why this isn't possible? It seems very strange that one can trace most kind of events in a program and the reading of messages from a mailbox is not traceable.

推荐答案

p>没有这样的工具。您只能希望调用跟踪处理函数。在OTP应用程序中很容易，因为您可以钩住 handle _... 。

There is no such tool. You can only hope for call tracing of the handling function. It is rather easy in OTP applications since you can hook handle_....

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