Multithreading

[Brian Havard <br...@kheldar.apana.org.au>]

  I'm looking at multithreading for OS/2 (which threads much more efficiently
than it forks) but it looks like there are a few Windoze specific bits of
code in there (and not in the os/win32 directory). 

One thing I found and don't know what to do with is

#define APACHE_TLS __declspec( thread )

in multithread.h. What does this do and is it portable?

--
 ______________________________________________________________________________
 |  Brian Havard                 |  "He is not the messiah!                   |
 |  brianh@kheldar.apana.org.au  |  He's a very naughty boy!" - Life of Brian |
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Re: Multithreading

[Martijn Koster <ma...@webcrawler.com>]

On Wed, Oct 15, 1997 at 07:28:41PM +1000, Brian Havard wrote:

> One thing I found and don't know what to do with is
> 
> #define APACHE_TLS __declspec( thread )
> 
> in multithread.h. What does this do and is it portable?

I know little about Win32, but Excite found: 

   http://www.vcdj.com/vcdj/jul97/win32_17.htm

   "Several compilers implement automatic thread-local storage management.
    For Microsoft C, this is done by adding the thread attribute to a
    variable declaration like so: 

    __declspec(thread) LPTSTR buffer; 

    ...
   This is a Microsoft-specific extension and may not be supported in all compilers."

Hope this helps.

-- Martijn Koster, m.koster@pobox.com