FW: [Gc] Boehm GC and static library

Boehm, Hans hans.boehm at hp.com
Mon Jan 3 13:37:38 PST 2011

Forwarding, since I'm not currently in a position to approve this.


From: Scott [mailto:theerickson at gmail.com]
Sent: Monday, January 03, 2011 12:36 PM
To: Bruce Hoult
Cc: Randy Buck; gc at linux.hpl.hp.com
Subject: Re: [Gc] Boehm GC and static library

The issue was resolved. #define GC_THREADS was mistakenly omitted. Thanks for replying Bruce!


On Tue, Dec 28, 2010 at 9:45 PM, Bruce Hoult <bruce at hoult.org<mailto:bruce at hoult.org>> wrote:
On Fri, Dec 24, 2010 at 5:59 AM, Randy Buck <sutekistudent at gmail.com<mailto:sutekistudent at gmail.com>> wrote:
> I am having difficulty getting the Boehm GC to work with a static library.
>  I get the following error: "Collecting from unknown thread."
> The static library creates a thread and listens for UDP packets coming into
> it.  If I do not create this thread, everything works fine, meaning it
> compiles and runs but doesn't perform the necessary functionality.  I am
> guessing that this is the thread in reference to the above error message.
> How do I use the GC when I am linking in a static library that creates
> threads?
You didn't say what operating system you are on. You may have to call
GC_register_my_thread() at the start of your thread, something like

struct GC_stack_base *sb;

Is someone calling gcinit()?

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