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bug#64039: C-procedure runs when called from C-code, but hags when calle
From: |
Mike Gran |
Subject: |
bug#64039: C-procedure runs when called from C-code, but hags when called from Guile |
Date: |
Tue, 13 Jun 2023 14:25:46 +0000 (UTC) |
Actually, no, you're right. I've just never seen a do/while w/o braces.
On Tuesday, June 13, 2023 at 06:37:01 AM PDT, Mike Gran via "Bug reports for
GUILE, GNU's Ubiquitous Extension Language <bug-guile@gnu.org> wrote:
Hello-
I don't see the problem with the shutter.
But the GetStatus lines should be more like what is below. Your current code
only checks status once.
do {
GetStatus(&status);
} while (status== DRV_ACQUIRING);
On Tuesday, June 13, 2023 at 04:29:46 AM PDT, Михаил Бахтерев
<mike.bakhterev@gmail.com> wrote:
Greetings.
1. The version
$ guile --version
guile (GNU Guile) 3.0.9
2. The machine
$ uname -a
Linux bioscope 6.3.7-arch1-1 #1 SMP PREEMPT_DYNAMIC Sat, 10 Jun 2023 00:35:35
+0000 x86_64 GNU/Linux
3. The package
$ pacman -Qi guile
Version : 3.0.9-1
Architecture : x86_64
Depends On : gmp ncurses libunistring gc libffi libxcrypt
4. The problem
I'm working on application for scientific computer vision. We use one of the
Andor camera. I've decided to code configuration and user interface parts in
Guile Scheme, as to my experience, it is a lot simpler. But i've encountered
strange error.
Attached archive contains three source files. cam.c implements simple sequence
of interactions with camera driver. That sequence should result in image
acquisition and in the clicking of camera shutter. I've built shared library
from this code (see makefile, please) and have linked it with simple main
program (test.c). When i run resulting binary, i get
$ ./test
INITIALIZATION
CONFIGURATION
ACQUISITION
-- shutter clicks here
AWAITING
SHUTTING DOWN
When i try to run this code from Guile Scheme, as extension, it hangs.
$ guile test.scm
defining single-shot
INITIALIZATION
CONFIGURATION
ACQUISITION
AWAITING
-- no shutter clicking
^C
I do not understand how to debug further, so i just include straces of both
runs in attached archive. If anyone will give me some directions for
investigation of the problem, i'll try to do my best. Thanks in advance!
- Respectfully, Mike.