Sponsored Content
Full Discussion: posix ipc message queue
Operating Systems HP-UX posix ipc message queue Post 302072345 by cadanir on Monday 1st of May 2006 07:59:52 PM
Old 05-01-2006
Yes, it may be a filesystem limit... I will survey more closely the disk space available, probably something like /tmp or /var/tmp... or $TMPDIR... or perhaps the swap space.. must be increased...

I will look to this tomorow...

The OS (HP-UX) shoud write the content of the queues actually in memory to disk. There is no other way to find again this content after reboot...

But where he writes the queues ? ...these things should be documented. I don't want to search in 'The single UNIX Specification version x' and finally learn that it's 'implementation specific'...

Thank you perderabo...
 

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 Dummies Questions & Answers

Posix vs System V IPC quesions

What are the differences/similarities between posix and system V ipc and their mechanisms? also, why is system v only limited to inter-process communication on a single node? thanks (0 Replies)
Discussion started by: jsimpson
0 Replies

3. Linux

POSIX message queue size

Hi all, Please tell me how to change POSIX message queue maximum size? "ulimit" is not a solution because it controls shell resources. But i need to control queue size before login in and starting the shell. It is needed to limit queue size for applications started before login in. Sorry for my... (7 Replies)
Discussion started by: Vourhey
7 Replies

4. 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

5. Programming

IPC - queue problems

Hi, I´m having a lot of problems when working with message queues, both on HP-UX Systems and Sun Solaris. When we fill a queue with a messages, the system hangs and locks everything that relies on the use of IPC resources. Anyone knows how to eliminate this problem? Thanks, Haroldo Teixeira (2 Replies)
Discussion started by: haroldo
2 Replies

6. UNIX for Dummies Questions & Answers

IPC Message Queue. msgrcv doesnt work..

Hi everybody, this is the situation. there is a programm XYZ which opens a message queue with the key 47110815 and waits for a SIGUSR1. After receiving this signal it sends a message with type 100 and a number (as ASCII) in the message-body. I have to write a prog which frist sends the... (1 Reply)
Discussion started by: daredevil82m
1 Replies

7. Programming

kill() function problem in client-server ipc message using 2 FIFOs

I want to have a message send & receive through 2 uni-direction FIFO Flow of data FIFO1 stdin--->parent(client) writefd--->FIFO1-->child(server) readfd FIFO2 child(server) writefd2---->FIFO2--->parent(client) readfd2--->stdout I need to have boundary structed message... (3 Replies)
Discussion started by: ouou
3 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
E2TOOLS(7)						 Miscellaneous Information Manual						E2TOOLS(7)

NAME
e2tools - utilities to manipulate files in an ext2/ext3 filesystem DESCRIPTION
E2tools is a simple set of GPL'ed utilities to read, write, and manipulate files in an ext2/ext3 filesystem. These utilities access a filesystem directly using the ext2fs library. I wrote these tools in order to copy files into a linux filesystem on a machine that does not have ext2 support. Of course, they can also be used on a linux machine to read/write to disk images or floppies without having to mount them or have root access. Supported functionality: e2cp copy files e2mv move files e2rm remove files e2mkdir create directory e2ln create hard links e2ls list files/directories e2tail output the last part of a file In general, to specify a directory or file on an ext2 filesystem for the e2tools utilities, use the following form: filesystem:directory_path The filesystem can be an unmounted partition or a regular file that's been formatted to contain an ext2 filesystem. In general, if a com- mand takes multiple file names on the command line, if the first one contains an ext2 file specification, the rest of the files are assumed to be on the same filesystem until another one is explicitly stated: /tmp/boot.img:/tmp/file1 /tmp/file2 /tmp/file3 /tmp/boot2.img:/tmp/file4 Files 1-3 are on /tmp/boot.img and the last file is on /tmp/boot2.img SEE ALSO
e2cp(1), e2ln(1), e2ls(1), e2mkdir(1), e2mv(1), e2rm(1), e2tail(1). AUTHOR
The e2tools were written by Keith Sheffield <sheff@pobox.com>. This manual page was written by Lucas Wall <lwall@debian.org>, for the Debian project (but may be used by others). March 2, 2005 E2TOOLS(7)
All times are GMT -4. The time now is 02:40 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy