07-29-2003
I don't understand what you are attempting nor what error you think you might be experiencing.
Ironically, the only part of your post that I decipher are the parameters that you find strange.
Your message queue is 4140 bytes long, the number of messages on the queue is zero, and the time of the last message send is... well, you never have sent a message to this queue.
Why is that strange? What is pushing and pulling? Do you mean push/pop as with a stack? How do you think you can do that? What does disabled mean? How do you approach a queue?
10 More Discussions You Might Find Interesting
1. 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
2. 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
3. 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
4. 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
5. 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
6. 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
7. 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
8. Programming
Hello !!!!! I have a simple question but i can't find the answer anywhere hope to meet it here.
Why it is a bad idea to pass pointers through message queues ?
Most structs i see all of their char types are arrays... Is it becase having pointers means we could possibily send wrong bytes ?
For... (2 Replies)
Discussion started by: qlyine
2 Replies
9. Shell Programming and Scripting
Hi,
I need to move the XML files from the UNIX to the message queue. Please help me out to write the code..
Thanks,
Mohana Krishnan (0 Replies)
Discussion started by: krishnan_6015@y
0 Replies
10. 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
MSG_SEND(3) 1 MSG_SEND(3)
msg_send - Send a message to a message queue
SYNOPSIS
bool msg_send (resource $queue, int $msgtype, mixed $message, [bool $serialize = true], [bool $blocking = true], [int &$errorcode])
DESCRIPTION
msg_send(3) sends a $message of type $msgtype (which MUST be greater than 0) to the message queue specified by $queue.
PARAMETERS
o $queue
-
o $msgtype
-
o $message
-
o $serialize
- The optional $serialize controls how the $message is sent. $serialize defaults to TRUE which means that the $message is serial-
ized using the same mechanism as the session module before being sent to the queue. This allows complex arrays and objects to be
sent to other PHP scripts, or if you are using the WDDX serializer, to any WDDX compatible client.
o $blocking
- If the message is too large to fit in the queue, your script will wait until another process reads messages from the queue and
frees enough space for your message to be sent. This is called blocking; you can prevent blocking by setting the optional $block-
ing parameter to FALSE, in which case msg_send(3) will immediately return FALSE if the message is too big for the queue, and set
the optional $errorcode to MSG_EAGAIN, indicating that you should try to send your message again a little later on.
o $errorcode
-
RETURN VALUES
Returns TRUE on success or FALSE on failure.
Upon successful completion the message queue data structure is updated as follows: $msg_lspid is set to the process-ID of the calling
process, $msg_qnum is incremented by 1 and $msg_stime is set to the current time.
SEE ALSO
msg_remove_queue(3), msg_receive(3), msg_stat_queue(3), msg_set_queue(3).
PHP Documentation Group MSG_SEND(3)