[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: doco scm_remember_upto_1

From: Marius Vollmer
Subject: Re: doco scm_remember_upto_1
Date: 01 Jun 2003 23:41:57 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3

Kevin Ryde <address@hidden> writes:

> I'd like to propose the words below, assuming they're true.  Perhaps
> experts can review the last para in particular, and decide how much
> can or should be said about gc and pre-emption.

We can make the guarantee that a GC wont run asynchronously.  What
abut this wording:

       In a multi-threaded program, it might be thought that a garbage
    collection could occur in another thread at any time, and hence
    mean a routine like `clear_image' would require protection too.
    But this is not the case, a GC will only run when all threads are
    in a safe place and have been stopped.  But when in doubt, be
    conservative: include the call to scm_remember_upto_here_1 when
    you are not sure that it is safe to leave it out.  A call to
    scm_remember_1 will cost at most as much as a call to an empty

> I don't think the varargs scm_remember_upto_here should be documented,
> because I don't think it can be implemented as an inline.

Is that important?  A note that says that the non-varargs functions
might be more efficient should suffice, no?

The rest is very nice!

GPG: D5D4E405 - 2F9B BCCC 8527 692A 04E3  331E FAF8 226A D5D4 E405

reply via email to

[Prev in Thread] Current Thread [Next in Thread]