Re: [Qemu-devel] Re: [PATCH V3 1/3] qemu: Add qemu-wrappers for pthread_attr_t

[Paolo Bonzini <pbonzini@redhat.com>]

On 06/04/2010 03:19 PM, Corentin Chary wrote:
>>> The point of these wrappers AFAIU is not only to add error_exit, but also
>>> to be portable to Windows in the future.
>>
>> This is historical because the code was largely inspired by glibc's
>> implementation of posix-aio.  It doesn't need to be detached and since
>> Corentin wants to be able to join a worker, it makes sense to just avoid
>> detaching and pay the overhead of making the threads joinable.
>
> Actually, I want to know if the queue is empty and if no job are
> currently being processed: all worker are idle or stopped. I don't
> really need pthread_join() for that, since worker can be idle (we
> don't want to always start and stop the thread :) ).

Then it's also fine to have all qemu_threads detached (like in my patch 
to create all qemu_threads with blocked signals).  I just want to avoid 
implementing pthreads one day for qemu-threads-win32.c.

Paolo