11-13-2001
Thx guys,
I discussed both methods with my collegue and we didn't choose any of both methods. One of the issues is that both programs have to be portable to almost any system. We don't realy know if windows pipe handling is the same as unix pipe handling. It pipes isn't an option. (I only found this out after I wrote the topic)
Considering the small amount of time we have to complete the project we decided to implement some messeging system, which is indipendent of the method u use for in/output. For now we use 2 temp files which for each program (there are indeed 2 programs, a java program and a c program). But it might be possible to use pipes or sockets in the future. An advantage is that there doesn't have to be send much data between the 2 programs.(java is the gui and the c++ program handles the openGL drawing and heavy calculations).
So we use temporary files. However I would like to thank you for your fast response!
lmnt22
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Say in unix (AIX) m/c, I am logged in with s1 user and want to start process p1 with user credentials of s2.
I can do manually in this way:
#su - s2
#enter password for s2> somePassword
$ p1
But all this I have to do through a java program. How to pass the password through program.
One... (1 Reply)
Discussion started by: shailendrat
1 Replies
2. Shell Programming and Scripting
Hello all sorry didnt know where to post it
i compiled simple program that using "System.getProperty("user.dir");"
now i compiled the program under directory foo and and its running great when i do "java myapp"
i included this directory in the $PATH env variable so i could see it fro any where... (1 Reply)
Discussion started by: umen
1 Replies
3. Programming
i want to write a C chat program that communicates over IPC(inter process communication), that could be run using 2 seperate terminal windows within the same computer. so that wat u type in one terminal window , should appear on the other and vice versa...
could some one please help me with the... (2 Replies)
Discussion started by: localp
2 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I need to execute a java program in a shell script.I then need to assign the value being returned by the program into a unix variable.Is there any way i can access the value in a variable in java program?
As in if my java code has a variable,
.
.
.
.
valueA =x.getValue()
.....
can... (1 Reply)
Discussion started by: inquisitive101
1 Replies
5. Shell Programming and Scripting
I am entirely new to shell scripting and would like to create a script to execute a java program called Main. I've already compiled it and placed the .java and .class files at /root/javaTest. Next I made a shell script that simply contained: java /root/javaTest/Main . I made the script... (2 Replies)
Discussion started by: hypnotic_meat
2 Replies
6. Programming
Hello,
here's my situation: I have a C++ server running on a well known machine and a number of Java clients running on other machines (assumed as unknown) on the same LAN. What I want to achieve is full duplex communication between those applications, in order to exchange complex objects and data... (3 Replies)
Discussion started by: demerzel3
3 Replies
7. Programming
Hi All,
I need to to wright a java programm for the following query.
Qus: output need to genarate a number+ alphnumric sequence in java and get converted into ASCII code so that i can use mod logic on that. example
Output: like 10 digit number
1AAAAAAAAA
1AAAAAAAAB
1AAAAAAAAC
.
.... (4 Replies)
Discussion started by: Ganesh Khandare
4 Replies
8. Shell Programming and Scripting
Hello,
i have a demon 'c' program that have a dynamic table of logic registers ( 2000 variables ).
exemple of registers:
I1.34.5
M23.4.1
I want from shell acess to this table of registers.
How can i do this?
with something like for read I1.34.5:
#cat... (3 Replies)
Discussion started by: rzyz
3 Replies
9. Programming
Hello,
The arguments are strings. In my code I need them to be a different type, I do the cast but it is not feasible ...
Have you any idea?
Thank you (8 Replies)
Discussion started by: chercheur857
8 Replies
10. UNIX for Advanced & Expert Users
What is the trick to get a java program to run and compile? I can't even get a basic skeleton to run and compile. What packages do I need? I figured the java-gcj and gcc-java packages was enough. Do I need any other packages?
I thought I had to do this and it would work but its not.
javac... (1 Reply)
Discussion started by: cokedude
1 Replies
LEARN ABOUT SUSE
io::pipe
IO::Pipe(3pm) Perl Programmers Reference Guide IO::Pipe(3pm)
NAME
IO::Pipe - supply object methods for pipes
SYNOPSIS
use IO::Pipe;
$pipe = new IO::Pipe;
if($pid = fork()) { # Parent
$pipe->reader();
while(<$pipe>) {
...
}
}
elsif(defined $pid) { # Child
$pipe->writer();
print $pipe ...
}
or
$pipe = new IO::Pipe;
$pipe->reader(qw(ls -l));
while(<$pipe>) {
...
}
DESCRIPTION
"IO::Pipe" provides an interface to creating pipes between processes.
CONSTRUCTOR
new ( [READER, WRITER] )
Creates an "IO::Pipe", which is a reference to a newly created symbol (see the "Symbol" package). "IO::Pipe::new" optionally takes two
arguments, which should be objects blessed into "IO::Handle", or a subclass thereof. These two objects will be used for the system call
to "pipe". If no arguments are given then method "handles" is called on the new "IO::Pipe" object.
These two handles are held in the array part of the GLOB until either "reader" or "writer" is called.
METHODS
reader ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the reading end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
writer ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the writing end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
handles ()
This method is called during construction by "IO::Pipe::new" on the newly created "IO::Pipe" object. It returns an array of two objects
blessed into "IO::Pipe::End", or a subclass thereof.
SEE ALSO
IO::Handle
AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perl5-porters@perl.org>.
COPYRIGHT
Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
perl v5.12.1 2010-04-26 IO::Pipe(3pm)