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Re: Thread and guile environment

From: Neil Jerram
Subject: Re: Thread and guile environment
Date: Fri, 09 Jul 2010 21:23:59 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)

Andy Wingo <address@hidden> writes:

> On Mon 05 Jul 2010 09:23, address@hidden writes:
>> Suppose I have a multithreaded C program. Isn't the guile environment 
>> supposed
>> to be shared amongst all threads ? That's what I understood from reading the
>> docs anyway.
>> Yet this simple exemple shows the opposite (see the 3 attached files).
>> So am I supposed to source my global scheme definitions in all threads
>> ?
> Interestingly, the first thread has you in (guile-user), but the second
> has you in (guile). So you don't see the full definition of format, nor
> do you see hug.

That's what I thought too.  But in that case I have no idea why my
'(define-module (guile-user))' suggestion didn't work.

> But it's quite ugly. Does anyone have any input as to what module should
> be current when a thread previously unknown to Guile enters Guile?

Surely it has to be (guile-user), since that what the end of boot-9.scm
moves into - and hence is well-established for the single thread case.
I suspect that a program that calls scm_with_guile() on multiple threads
can't necessarily predict which of the threads will perform the Guile


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