10 More Discussions You Might Find Interesting
1. Ubuntu
Hello
How can I see the created message queues in the system? (4 Replies)
Discussion started by: xyzt
4 Replies
2. Programming
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
3. Programming
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
4. Programming
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
hi all...
ive been trying this program where i spawn 4 threads... and i am trying to use message queue to send msgs from 3 of the threads to the parent thread... but it doent seem to be working... ive almost pulled out my hair tryin to fix the prob :confused:
another wierd thing... (1 Reply)
Discussion started by: strider
1 Replies
6. IP Networking
I am sending and retriving the message to the queue
the problem is
after retrieving the message can i see what is there in my message queue.
(actually in my application i am encountring some garbage value)
so i want to retieve this garbage value and also want to know its size
how... (0 Replies)
Discussion started by: ramneek
0 Replies
7. Programming
Is there any way one can delete , say , a particular message from a message queue on system V? (2 Replies)
Discussion started by: satansfury
2 Replies
8. Programming
hi all,
I'm working on this problem for 2 days. Can somebody tell me that how to delete all message queues from the system ?
Since "ipcs -q" gives the list of all existing message queue, then there must be a system call and data stucture where from I can fetch the data about all existing... (2 Replies)
Discussion started by: v_rathor
2 Replies
9. HP-UX
Hello,
J work on a HP.
I want to create message queue by using mq_open with this parameters:
mq_open(p,O_CREAT|O_WRONLY|O_EXCL|0_NONBLOCK,0600,&queue_attr)
with p char
and the function returns the value -1 and errno equal 2.
can you help me ?
Thank. (3 Replies)
Discussion started by: AUBERT
3 Replies
10. Programming
Hi there:
Thanks first. When I use a message queue amony severl processes, will I have to synchronize the queue? I don't think I would have to because a message queue is implemented in a link listed. Correct me If I am wrong... (0 Replies)
Discussion started by: yanhu
0 Replies
mailq(1) General Commands Manual mailq(1)
NAME
mailq - prints the mail queue
SYNOPSIS
DESCRIPTION
prints a summary of the mail messages queued for future delivery.
The first line printed for each message shows the internal identifier used on this host for the message, the size of the message in bytes,
the date and time the message was accepted into the queue, and the envelope sender of the message. The second line shows the error message
that caused this message to be retained in the queue; it will not be present if the message is being processed for the first time. The
status characters are:
to indicate that the job is being processed
to indicate that the load is too high to process the job
to indicate that the job is too new in the queue to process.
The output lines that follow the second line show the message recipients, one per line.
is identical to
Options
The supported options are:
Show the mail submission queue specified in the
file instead of the MTA queue specified in the file.
Show the lost items in the mail queue instead of normal queue items.
Show the quarantined items in the mail queue instead
of the normal queue items.
Limit processed jobs to those containing
substr as a substring of the queue ID or not when is specified.
Limit processed jobs to quarantined jobs containing
substr as a substring of the quarantine reason or not when is specified.
Limit processed jobs to those containing
substr as a substring of one of the recipients or not when is specified.
Limit processed jobs to those containing
substr as a substring of the sender or not when is specified.
Print verbose information.
This adds the priority of the message and a single character indicator or blank) indicating whether a warning message has
been sent on the first line of the message. In addition, extra lines may be intermixed with the recipients indicating the
`controlling user' information. This shows who owns the programs that are executed on behalf of this message and the name
of the alias this command expanded from, if any.
RETURN VALUE
The utility exits with 0 on success, and >0 if an error occurs.
AUTHOR
was developed by the University of California, Berkeley, and originally appeared in 4.0BSD.
FILES
mail queue files for
SEE ALSO
sendmail(1M).
mailq(1)