Re: [boost] [thread] Why is thread_interrupted not derived from thread_exception or std::exception?

Subject: Re: [boost] [thread] Why is thread_interrupted not derived from thread_exception or std::exception?
From: Howard Hinnant (hinnant_at_[hidden])
Date: 2009-02-07 15:59:45

On Feb 7, 2009, at 2:30 PM, Andrey Semashev wrote:

> Boris Schaeling wrote:
>> Why is thread_interrupted not derived from thread_exception or  
>> std::exception? It might easily slip through a try/catch-block, and  
>> if I hadn't looked up the header file now it might have slipped  
>> through mine.
>
> I assume, this is the intention. The thread_interrupted exception is  
> thrown when the thread is canceled in order to unwind the stack up  
> to the Boost.Thread thread function trampoline. Normally, you should  
> not catch it.

<nod> That was the intent:

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2320.html#ThreadsWording

(named thread_canceled here)

-Howard