Re: C++ Memory Management Innovation: GC Allocator

From:
"Chris Thomasson" <cristom@comcast.net>
Newsgroups:
comp.lang.c++.moderated
Date:
Fri, 25 Apr 2008 16:15:02 CST
Message-ID:
<W72dnbXxJarqqo_VnZ2dnUVZ_jGdnZ2d@comcast.com>
"xushiwei" <xushiweizh@gmail.com> wrote in message
news:a92bf2cd-5cda-45d6-a637-f799e63694da@q1g2000prf.googlegroups.com...

On Apr 24, 3:43 pm, "Chris Thomasson" <cris...@comcast.net> 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
support in my code now. See

[...]

Great! IMVHO, it will only make your hard work much more flexible indeed.

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