Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: POSIX message queue size
Operating Systems Linux POSIX message queue size Post 302203478 by era on Monday 9th of June 2008 02:42:01 AM
Old 06-09-2008
I don't understand your question really, but I don't think the ulimit you set for sh will apply for the separate bash process. You want something like

Code:
#!/bin/sh
ulimit -n 5
/one/two/appl start

... or bash if you really think you have a reason to prefer that (but it shouldn't be necessary, even if appl is a bash script).
 

10 More Discussions You Might Find Interesting

1. Programming

POSIX Message Queue - Settings

How can I increase the POSIX Msg Q parameter SC_MQ_PRIO_MAX? The maximum is defined as 32. Can I increase the number? If so, how? Deepa (0 Replies)
Discussion started by: Deepa
0 Replies

2. UNIX for Advanced & Expert Users

Unix message Queue

Hi, I am working closly with unix message queues i have encountered the following - after creating the Q and start working with it (pushing & pulling) i receive the following stange parameters on the q's - STIME=no_entry Qnum=0 CBYTES=4140 when this happens, the Q is disabled (meaning i... (3 Replies)
Discussion started by: kel
3 Replies

3. HP-UX

posix ipc message queue

Hello, My question is related to "pipcs -qa" command under HP-UX 11i PA-RISC 64 bits. We have a little C program that creates posix ipc message queues using the mq_open() system function. The program fail with 'No space left on device' error when we create big queues. What is the system... (6 Replies)
Discussion started by: cadanir
6 Replies

4. Programming

message queue

Hello, i need to write a message queue "chat server", that should work only localy. Can anyone please help me with some ideas and peshaps code. I'm studying the UNIX IPC mechanisms right now. So far, i understand how it works but i still cannot get an idea how to write a chat programm... ... (2 Replies)
Discussion started by: etenv
2 Replies

5. Programming

How to limit max no of message in a posix message queue

Hii can anyone pls tell how to limit the max no of message in a posix message queue. I have made changes in proc/sys/fs/mqueue/msg_max But still whenever i try to read the value of max. message in the queue using attr.mq_curmsgs (where struct mq_attr attr) its giving the default value as 10.... (0 Replies)
Discussion started by: mohit3884
0 Replies

6. Programming

Message Queue Problem

Hi all, I need help about message queues, i have a server-client program that communicates each other via msg queue, firstly server opens its msg queue and waits for msg then client opens server msg queue and its own msg queue(for receiving msg from server,clients sends msg to server msg... (7 Replies)
Discussion started by: SaTYR
7 Replies

7. Programming

POSIX mq_receive issue: Message too long

Hello, I am trying to implement posix message queue application. I am faced with an error on the mq_receive section. It says "Message too long". I've tried couple of small tweeks, but to no result. Please do suggest any rectificaitons. mq_send section-works successfully #include... (2 Replies)
Discussion started by: katwalatapan
2 Replies

8. Programming

Please help:program hang stuck there signal handling on POSIX Message Queue UNIX C programming

in a single main() function,so need signal handling. Use Posix Message Queue IPC mechanism , can ignore the priority and other linked list message,to implement the scenario: client:Knock Knock server:who's there client: Eric Server:Eric,Welcome. client:exit all process terminated ... (1 Reply)
Discussion started by: ouou
1 Replies

9. Programming

POSIX Message Queue Memory Allocation

Hi, I wanted to know whether the POSIX message queues are statically allocated memory by the kernel based on the parameters specified in the open or as and when we send messages, memory are allocated? Does the kernel reserve the specified memory for the message queue irrespective of whether... (1 Reply)
Discussion started by: sumtata
1 Replies

10. Programming

POSIX message queue mq_open directory

hello, I try to test the POSIX mq_open function on book unp like below: #include "unpipc.h" # include <mqueue.h> int main(int argc, char **argv) { int c, flags; mqd_t mqd; flags = O_RDWR | O_CREAT; while ((c = getopt(argc, argv, "e")) != -1) { ... (3 Replies)
Discussion started by: anpufeng
3 Replies

LEARN ABOUT HPUX

pipcrm

pipcrm(1)						      General Commands Manual							 pipcrm(1)

NAME

       pipcrm - remove a POSIX message queue or a POSIX named semaphore

SYNOPSIS

       [option]...

DESCRIPTION

       The command removes one or more specified POSIX message queue or POSIX named semaphore.

   Options
       The identifiers are specified by the following options:

	      Unlinks the queue name from the message queue
			     specified	by the argument, msqname.  If there are no processes with existing open descriptors for the message queue,
			     the queue is destroyed.  If one or more processes have the message queue open, the removal of the queue is  postponed
			     until all descriptors for the queue have been closed.

	      Unlinks the semaphore name from the semaphore
			     specified	by the argument, semname.  If there are no processes with existing open descriptors for the semaphore, the
			     semaphore is destroyed.  If one or more processes have the semaphore open, the removal of the semaphore is  postponed
			     until all descriptors for the semaphore have been closed.

       The details of the removals are described in mq_unlink(2), and sem_unlink(2).  The names can be found by using (see pipcs(1)).

SEE ALSO

       pipcs(1), mq_unlink(2), mq_open(2), mq_send(2), mq_receive(2), sem_unlink(2), sem_open(2), sem_wait(2), sem_post(2).

STANDARDS CONFORMANCE

																	 pipcrm(1)
All times are GMT -4. The time now is 11:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy