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Full Discussion: message queues
Top Forums UNIX for Dummies Questions & Answers message queues Post 302346679 by Smiling Dragon on Sunday 23rd of August 2009 08:28:48 PM
Old 08-23-2009
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1. Programming

Message queues

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)
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2. UNIX for Dummies Questions & Answers

message queues

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)
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3. Solaris

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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)
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5. Programming

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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)
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6. UNIX for Advanced & Expert Users

UNIX Message Queues vs. Sockets

If I use sockets for IPC, and can easily distribute my applications. UNIX Message Queues are local to the processor. As I understand it, Message Queues still incur system call overhead, just like socket calls. What advantage does a UNIX Message Queue provide versus a TCP or UDP Socket,... (2 Replies)
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7. UNIX for Advanced & Expert Users

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#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
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8. Programming

Persisting message queues to disk

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)
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9. Shell Programming and Scripting

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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)
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10. UNIX for Advanced & Expert Users

Performance calculation for Message Queues

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URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

NAME
URI::URL - Uniform Resource Locators SYNOPSIS
$u1 = URI::URL->new($str, $base); $u2 = $u1->abs; DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to be distributed with the libwww-perl library. The following differences exist compared to the "URI" class interface: o The URI::URL module exports the url() function as an alternate constructor interface. o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase". o The URI::URL->newlocal class method is the same as URI::file->new_abs. o URI::URL::strict(1) o $url->print_on method o $url->crack method o $url->full_path: same as ($uri->abs_path || "/") o $url->netloc: same as $uri->authority o $url->epath, $url->equery: same as $uri->path, $uri->query o $url->path and $url->query pass unescaped strings. o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters) o $url->params and $url->eparams methods o $url->base method. See URI::WithBase. o $url->abs and $url->rel have an optional $base argument. See URI::WithBase. o $url->frag: same as $uri->fragment o $url->keywords: same as $uri->query_keywords o $url->localpath and friends map to $uri->file. o $url->address and $url->encoded822addr: same as $uri->to for mailto URI o $url->groupart method for news URI o $url->article: same as $uri->message SEE ALSO
URI, URI::WithBase COPYRIGHT
Copyright 1998-2000 Gisle Aas. perl v5.16.3 2012-02-11 URI::URL(3)
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