Hi, I am currently facing an issue when reading in a set of several posix queues (let's say 2 different mqueues) from several processes. I currently use epoll_wait to wait for an incoming message on either queue on all listening processes, then mq_timedreceive to retrieve it from the queue. This is an issue when the number of reader process grows, as if I send only one message on a queue, all processes are awaken when epoll_wait returns, and all processes try to fetch the message. I would like to fix this and wake up only one process when listening to several queues, removing the useless user/kernel space switchs for the other listening processes. Is there any way to run a mq_receive/mq_timedreceive on several queues, that would wake up only one process? Something more or less like epoll, but that also fetches a message from the readable queues before returning. Thanks, Romain -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
