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Re: signal handling different in 1.8.3 than 1.8.1?
From: |
Ludovic Courtès |
Subject: |
Re: signal handling different in 1.8.3 than 1.8.1? |
Date: |
Tue, 03 Jun 2008 17:07:02 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux) |
Hi,
Gregory Marton <address@hidden> writes:
> Now that I've upgraded to 1.8.3 from 1.8.1, some old test cases are
> failing. In particular:
According to `NEWS', there were no signal-related changes.
> (define (ensure body-lambda ensuring-lambda)
> (dynamic-wind
> (lambda () #t)
> body-lambda
> ensuring-lambda))
>
> (define (with-sigaction signum handler flags lamb)
> (let ((old-sigaction (sigaction signum)))
> (if flags (sigaction signum handler flags) (sigaction signum handler))
> (ensure
> lamb
> (lambda ()
> (sigaction signum (car old-sigaction) (cdr old-sigaction))))))
Signal handlers are invoked asynchronously as system asyncs, and system
asyncs are run whenever `SCM_TICK' is encountered in the C code.
There doesn't seem to be any Scheme procedure to force the execution of
system asyncs, but maybe you can try invoking LAMB above in
`call-with-unblocked-asyncs' and/or adding a `(sleep 0)' right before it
to force the execution of pending system asyncs.
Let us know if it helps.
Thanks,
Ludovic.
- signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/01
- Re: signal handling different in 1.8.3 than 1.8.1?,
Ludovic Courtès <=
- Re: signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/03
- Re: signal handling different in 1.8.3 than 1.8.1?, Ludovic Courtès, 2008/06/03
- Re: signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/06
- Re: signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/06
- Re: signal handling different in 1.8.3 than 1.8.1?, Ludovic Courtès, 2008/06/07
- Message not available
- Message not available
- Re: signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/27
- Re: signal handling different in 1.8.3 than 1.8.1?, Ludovic Courtès, 2008/06/28
- Re: signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/29
- Re: signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/29
- Re: signal handling different in 1.8.3 than 1.8.1?, Gregory Marton, 2008/06/29