03-21-2007
zen,
i doubt if you could use select() for the the different message queues, while you can do that for sockets. If you have multiple sockets and need to do event based handling depending on which socket you recv and what type of message you get, sockets are the ay to go. But the point to note is that its reliable, if you are pushing UDP packets internally within the system.
10 More Discussions You Might Find Interesting
1. Programming
Hi all,
I've been trying for hours to figure out how to turn my 2-program (one to send and one to receive) "chat system" using message queues, into a single program where each concurrent component (entity) will both send and receive messages. PLEASE give me a hand with this, I'm starting to... (9 Replies)
Discussion started by: mgchato
9 Replies
2. UNIX for Dummies Questions & Answers
let 3 processes a, b and c are sharing msgs using msg queues.process 'a' sending msg to 'c' and in turn 'c' send sthat msg to 'b'.if something happens to c how can 'a' and 'b' know that 'c' is not available?????? (2 Replies)
Discussion started by: sukaam
2 Replies
3. Solaris
We have message queues created from our ERP system to our tax system via an application api written by the ERP software vendor.
Occasionally when a user does not gracefully exit the ERP application, the message queue hangs. After a few months, this becomes a problem as the queues are all used... (2 Replies)
Discussion started by: MizzGail
2 Replies
4. Linux
how to check the maximun number of message queues in current linux enviornment? is there any command ? (4 Replies)
Discussion started by: princelinux
4 Replies
5. Programming
Hi,
According to my understanding..
When message queues are used, when a process post a message in the queue and if another process reads it from the queue then the queue will be empty unlike shared memory where n number of processess can access the shared memory and still the contents remain... (2 Replies)
Discussion started by: rvan
2 Replies
6. UNIX for Advanced & Expert Users
#include <sys/ipc.h>
#include <sys/msg.h>
int main()
{
int qid;
int t;
struct msgbuf mesg;
qid=msgget(IPC_PRIVATE,IPC_CREAT);
mesg.mtype=1L;
mesg.mtext=1;
t=msgsnd(qid,&mesg,1,0);
printf("%d",t);
}
the program prints -1 as the result of msgsnd ,which means that msgsnd doesn't... (1 Reply)
Discussion started by: tolkki
1 Replies
7. UNIX for Dummies Questions & Answers
can any body provide a tutorial that explains the concept of message queues in UNIX in great detail (1 Reply)
Discussion started by: asalman.qazi
1 Replies
8. Programming
Hi,
I have searched the forums and could not find a relavant thread discussing my use case, hence the new post.
Basically am trying to pass on work to dummy worker instances from controller which will pass on work to workers (client)
To make use of host capacity, am planning to serialize... (2 Replies)
Discussion started by: matrixmadhan
2 Replies
9. Shell Programming and Scripting
i have an application installed on AIX 5.3 and i have made a script that shutdown a proccesses that exceeded 10000kb of memory usage but i have a problem with cleaning the message queues of these proccesses after shutting them down. Is there any way to clean the message queues for this particular... (8 Replies)
Discussion started by: Portabello
8 Replies
10. UNIX for Advanced & Expert Users
i have a program(C++ Code) that sends/receives information through queue's (Uses MQ)
Is there any UNIX/LINUX tool that calculates the load and performance time for the same.
If not how do i design the program that calculates the performance time.
i know that time.h can be used but it gives... (2 Replies)
Discussion started by: vkca
2 Replies
LEARN ABOUT MOJAVE
log::message::config
Log::Message::Config(3pm) Perl Programmers Reference Guide Log::Message::Config(3pm)
NAME
Log::Message::Config - Configuration options for Log::Message
SYNOPSIS
# This module is implicitly used by Log::Message to create a config
# which it uses to log messages.
# For the options you can pass, see the C<Log::Message new()> method.
# Below is a sample of a config file you could use
# comments are denoted by a single '#'
# use a shared stack, or have a private instance?
# if none provided, set to '0',
private = 1
# do not be verbose
verbose = 0
# default tag to set on new items
# if none provided, set to 'NONE'
tag = SOME TAG
# default level to handle items
# if none provided, set to 'log'
level = carp
# extra files to include
# if none provided, no files are auto included
include = mylib.pl
include = ../my/other/lib.pl
# automatically delete items
# when you retrieve them from the stack?
# if none provided, set to '0'
remove = 1
# retrieve errors in chronological order, or not?
# if none provided, set to '1'
chrono = 0
DESCRIPTION
Log::Message::Config provides a standardized config object for Log::Message objects.
It can either read options as perl arguments, or as a config file. See the Log::Message manpage for more information about what arguments
are valid, and see the Synopsis for an example config file you can use
SEE ALSO
Log::Message, Log::Message::Item, Log::Message::Handlers
AUTHOR
This module by Jos Boumans <kane@cpan.org>.
Acknowledgements
Thanks to Ann Barcomb for her suggestions.
COPYRIGHT
This module is copyright (c) 2002 Jos Boumans <kane@cpan.org>. All rights reserved.
This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.
perl v5.18.2 2014-01-06 Log::Message::Config(3pm)