Re: C++ Memory Management Innovation: GC Allocator

On Apr 24, 3:43 pm, "Chris Thomasson" <cris...@[EMAIL PROTECTED]
> wrote:
>
> There are benefits for using TLS. Think of a simple contrived scenario
like:
>
> void function() {
>  // I need to allocate from m_alloc...
>  // How can I do this without adding any parameters?
>
> }
>
> void thread() {
>  GenericAllocator m_alloc;
>  function();
>
> }
>
> AFAICT, your allocator can use TLS as-is... Basically, something like:
>
> void function() {
>  GenericAllocator* const pm_alloc = pthread_getspecific(...);
>  // Now I can allocate from m_alloc! :^D
>
> }
>
> void thread() {
>  GenericAllocator m_alloc;
>  pthread_setspecific(..., &m_alloc);
>  function();
>
> }
>
> Don't you think that your design could "possibly" benefit from using
TLS?
> IMVHO, it would increase its flexibility...
>

You are right, TLS sounds better than a multi-threaded lock. I add TLS
sup****t in my code now. See

*
http://winx.googlecode.com/svn/trunk/stdext/include/stdext/memory/ScopeAlloc.h
* http://winx.googlecode.com/svn/trunk/stdext/include/stdext/thread/TLS.h

* 
http://winx.googlecode.com/svn/trunk/stdext/test/testlinux/AllocatorPerformance.cpp
* http://winx.googlecode.com/svn/trunk/stdext/test/testlinux/TestLinux.cpp

-- 
      [ See http://www.gotw.ca/resources/clcm.htm
for info about ]
      [ comp.lang.c++.moderated.    First time posters: Do this! ]