Re: help closing handle of thread

From:

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 16 Jul 2009 10:17:11 -0400

Message-ID:

<#StZsAiBKHA.3724@TK2MSFTNGP05.phx.gbl>

There is no need to wait until the thread exits. You can CloseHandle as
soon as you have no need for the handle - even immediately after creating
the thread. Closing the handle does not affect the thread.

"Jeova Almeida" <jeovaalmeida@yahoo.com> wrote in message
news:u3K4JjhBKHA.4984@TK2MSFTNGP05.phx.gbl...

Hello,

My main thread is creating a work thread (using CreateThread API).
If I use (in the main thread)

WaitForSingleObject(hThread);
CloseHandle(hThread);

Everything is fine.

But I can't use WaitForSingleObject, since it will make my thread act
synchronously, so that the main thread will stop executing until the
thread finishes.

Question:
a) What happens if I don't close the handle of the thread? It is only the
resource the OS hold for it that is not freed?
b) How would I close the handle of the thread without waiting for it to
finish (WaitForSingleObject)? I don't know how long it will last.

(in this particular project I don't use MFC, so I cannot use
AfxBeginThread)

--
Scott McPhillips [VC++ MVP]