forktest(6) Svgalib User Manual forktest(6)NAMEforktest - tests the vga_safety_fork() function.
SYNOPSISforktestDESCRIPTION
This is a copy of the keytest(6) demo (look there). However, it uses
vga_safety_fork(3) to start a background process to restore the console
in case the fore ground process crashes. It removes all automatic
restore functions of svgalib. Thus, in case you kill this program with
kill(1) or <Ctrl>-C, only the background process will save your system
from being hosed up.
You can set a videomode to use by setting the environment variable
SVGALIB_DEFAULT_MODE to a number (see vgatest for a list) or a string
like G0x1x2 where you replace 0 with desired x resolution, 1 with the
desired y rez, and 2 with the desired number of colors (2, 16, 256,
32K, 64K, 16M, 16M4). Again, only certain choices are available, see
vgatest for a list.
In case nothing is selected, G320x200x256 is choosen.
This demo is part of svgalib and can be found in the demos/ subdirec‐
tory of the original svgalib distribution. However, it is not installed
in the system by default, s.t. it is unclear where you can find it if
your svgalib was installed by some linux distribution. Even then, when
you have the demo on your system, you probably won't have the sources
s.t. it is only of limited use for you.
In case of any such problem, simply get an svgalib distribution from
the net. You even don't need to install it. Just make in the demos/
subdirecty. As of this writing, svgalib-1.2.12.tar.gz is the latest
version and can be retrieved by ftp from sunsite.unc.edu at
/pub/Linux/libs/graphics and tsx-11.mit.edu at /pub/linux/sources/libs
which will most probably be mirrored by a site close to you.
SEE ALSOsvgalib(7), vgagl(7), libvga.config(5), vga_safety_fork(3), threed(6),
accel(6), bg_test(6), eventtest(6), fun(6), keytest(6), mousetest(6),
scrolltest(6), speedtest(6), spin(6), testaccel(6), testgl(6), testlin‐
ear(6), vgatest(6), plane(6), wrapdemo(6)AUTHOR
This manual page was edited by Michael Weller <eowmob@exp-math.uni-
essen.de>. The exact source of the referenced demo as well as of the
original documentation is unknown.
It is very likely that both are at least to some extent are due to Harm
Hanemaayer <H.Hanemaayer@inter.nl.net>.
Occasionally this might be wrong. I hereby asked to be excused by the
original author and will happily accept any additions or corrections to
this first version of the svgalib manual.
Svgalib 1.3.0 8 April 1998 forktest(6)
