mq_open() returns

koumodaki · 02-19-2009, 06:19 AM

hi everyone,

I am trying to establish communication between 2 therads in my application with a named queue. The function call in my program is

Code:

mqd_t msgq_id = mq_open("/Message Box",O_RDWR | O_CREAT | O_EXCL, S_IRWXU | S_IRWXG, NULL);

the piece of code compile correctly and on running the application, this function fails. I checked the errno variable, I find that its been set to EAGAIN(11). I get the same errno when I retry executing this API.
I can understand other messages but EAGAIN!!!

Can you guys please let me know where I have gone wrong in this declaration

dwhitney67 · 02-19-2009, 06:46 AM

Are you creating the queue only one time? How does the white-space in your queue name affect it's creation?