A file descriptor is a reference to an open file description (see open(2)).

A file descriptor is a reference to an open file description (see open(2)).

[Note: The next installment of this series is here.]

TIP: The balance should have a capacity of at least 1.

This server program is registered to a port (281) as a queue of messages.

Each of the child's file descriptors shall refer to the same open file description with the corresponding file descriptor of the parent.

Routing policies - in a system with many queue servers, what servers should receive a message or a queue's messages?

One of them is the so-called “message queue”, which allows you to post publications at the appointed time.

Corresponding descriptors in the two processes share the flags (mq_flags) that are associated with the open message queue description.

Corresponding descriptors in the two processes share the flags (mq_flags) that are associated with the open message queue description.

Each file descriptor in the child refers to the same open message queue description as the corresponding file descriptor in the parent.

Each descriptor in the child refers to the same open message queue description as the corresponding descriptor in the parent.

Each of the message descriptors of the child shall refer to the same open message queue description as the corresponding message descriptor of the parent.

The duplicated file descriptors in the child refer to the same open file descriptions as the corresponding descriptors in the parent.

Each of the child's file descriptors shall refer to the same open file description with the corresponding file descriptor of the parent.