RE: boost.threads [was RE: [boost] Re: sockets /network programmi ng Requirements]

From: scleary_at_[hidden]
Date: 2001-07-31 12:46:14

> have a look at:
> 
> thread::thread()
> {
> #if defined(BOOST_HAS_WINTHREADS)
>     HANDLE cur = GetCurrentThread();
>     HANDLE real;
>     DuplicateHandle(GetCurrentProcess(), cur, 
> GetCurrentProcess(), &real,
> 0, FALSE, DUPLICATE_SAME_ACCESS);
>     m_thread = reinterpret_cast<unsigned long>(real);
>     m_id = GetCurrentThreadId();
> #elif defined(BOOST_HAS_PTHREADS)
>     m_thread = pthread_self();
>     m_state_manager = get_list();
>     m_state_manager->add(this);
> #endif
> }

<snip>

> your DuplicateHandle/CloseHandle is really an
> overkill.. keeping just ONE handle and TLS/TSD
> key association is much more attractive/
> efficient, IMHO.

No, DuplicateHandle/CloseHandle is required.  GetCurrentThread() returns a
psuedohandle, not a real handle.

> why not "static thread& thread::current()" ?

Think of other threads that need to see that thread's handle.

        -Steve