10 More Discussions You Might Find Interesting
1. 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
2. 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
3. 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
4. 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
5. Programming
Hi,
Am supposed to use message queues to send and receive messages between the processes. when i was working on that i realised that the message qid and the message queue related data should be maintained in a shared memory so that it can be accessed by all the processes. Could anybody refer... (10 Replies)
Discussion started by: rvan
10 Replies
6. UNIX for Advanced & Expert Users
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)
Discussion started by: zen29sky
2 Replies
7. 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
8. 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
9. 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
10. 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
invcutter(1) General Commands Manual invcutter(1)
Name
invcutter - generate subset inventory files
Syntax
/usr/sys/dist/invcutter [ -d ] [ -f root-path ] [ -f version-code ]
Description
The command reads master inventory records from standard input. A subset inventory record is written to standard output for every record
read from the input. The information contained in the output record is derived from the input record and the file attribute information in
the file hierarchy rooted in the current directory.
Options
-d Enable debugging. No useful diagnostics are printed.
-f root-path Specify an alternate root path for finding file attribute information.
-v version-code Specify a 3-digit version code for use in the version field of the output records. The default version code is 010.
Restrictions
All input records must be sorted in ascending order on the pathname field.
Files described in an input record which exist as sockets in the file hierarchy are not processable.
If a file is described in an input record has a link count greater than 1, all other links to the file must be represented in the input.
Examples
The following command will generate inventory records for the master inventory entries in PDS020.mi containing version fields set to 020:
invcutter -v 020 < PDS020.mi
Return Values
An exit status of 0 is returned if all goes well. An exit status of 1 is returned if an error occurs. See Diagnostics.
Diagnostics
"cannot chdir to pathname (error-message)"
The program cannot change directories to the pathname directory specified with the -f option. The error-message will provide additional
information.
"sort error, record #n"
The nth input record is not in the correct sort order. All input records must be in ascending ASCII colating sequence on the pathname
field.
"cannot stat filename (error-message)"
An error has occurred attempting to read the attributes of filename. The error-message explains exactly what happened.
"pathname: illegal file type code 0140000"
The file pathname is a socket. Sockets are not supported as valid file types for distribution.
"unresolved nlink n: pathname"
This indicates that file pathname in the master inventory is linked to n files which do not appear in the master inventory. Check inventory
for validity with the program.
"n unresolved hard links"
This is an informational message stating how many files were detected in the input inventory which had unresolved links.
See Also
newinv(1), stl_inv(5), stl_mi(5)
Guide to Preparing Software for Distribution on ULTRIX Systems
invcutter(1)
