RE: [boost] Re: Re: Thread Lib and DLL

From: Steven Mauceri (sm_at_[hidden])
Date: 2003-03-29 17:54:26

I believe you still have the problem of cleanup handlers needing to
execute within the closing thread (before the thread exits).

One can call WaitForMultipleObjects() with a cleanup-worker thread
whenever TLS is used, but you would only be able to execute the cleanup
handler function (for the closing thread) within the cleanup-worker's
context.  This would allow the cleanup handler to execute from a
cleanup-worker thread, before the thread object was actually closed.

If the boost TLS specification were relaxed to allow for cleanup
handlers to execute from a different thread (with boost.thread's Get/Set
TLS methods working), I see the possibility for a boost.threads
static-lib solution.

The previous email about the current boost specification gets into more
detail about possible options in this space.

- Steve

-----Original Message-----
From: Edward Diener
Sent: Saturday, March 29, 2003 2:04 PM
To: boost_at_[hidden]
Subject: [boost] Re: Re: Thread Lib and DLL

> Of course one might be able to roll's one own
> thread local storage implementation, probably
> using std::map<> to map a thread-id against storage
> areas for a particular thread, etc. etc. which would
> allow one to gain access to another thread's storage
> areas for thread specific data in order to do lazy
> reclamation, but one would have to do a good bit of
> work in order to accomplish what TLS automatically
> gives you. Also, of course, one's own implementation
> of TLS would not be compatible with the end-user's
> normal thread-local storage if that matters.

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