Re: [Qemu-devel] [PATCH 2/3] qemu-thread: add cleanup_push() and cleanup_pop()

[Paul Brook]

> From pthread man:
> 
>  These  functions  manipulate  the  calling thread's stack of
>  thread-cancellation clean-up handlers.  A clean-up handler is
>  a function that is automatically executed when a thread is canceled
>  [...] it might, for example, unlock a mutex so that it becomes
>  available to other threads in the process.

Do we really need to use thread cancellation?
It's one of those features that makes me extremely nervous. Especially in C 
code where people generally aren't expecting exceptions to be thrown.

Paul