[Gc] Using the Boehm-Demers-Weiser GC with a new threading library

Boehm, Hans hans.boehm at hp.com
Tue May 10 15:25:42 PDT 2005

Both approaches are clearly possible.  If you have control over the
thread library, I agree that it would be easier to put the hooks in
And you avoid having two sets of thread data structures around.

The collector more or less supports the Xerox Portable Common Runtime
(PCR), which is handled in this way.  (I haven't personally tested this
in ages, but I have been assured that it was still in use a year or two


> -----Original Message-----
> From: gc-bounces at napali.hpl.hp.com 
> [mailto:gc-bounces at napali.hpl.hp.com] On Behalf Of Stephane Epardaud
> Sent: Tuesday, May 10, 2005 6:24 AM
> To: gc at napali.hpl.hp.com
> Subject: Re: [Gc] Using the Boehm-Demers-Weiser GC with a new 
> threading library
> Hello,
> Thank you all for the valuable feedback, I now have a pretty 
> good idea how to scan the roots for my threads. I have 
> another question regarding how to extend the GC to support my 
> threading library. The idea behing the POSIX support is to 
> not modify the POSIX lib and manage a way to get the needed 
> info about the threads by wrapping some POSIX threading 
> calls. If I'm to add support to my threading library, should 
> I follow this approach, or add an API in my lib for the GC to 
> query the list of threads, roots, etc... ? Seems to be it 
> would be easier to add the appropriate API in my lib, and use 
> that in the support in the GC, but I'm not too sure about 
> exposing GC calls in a thread library... 
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