|MSGGET(2)||System Calls Manual||MSGGET(2)|
msgget() returns the message queue identifier associated with key. A message queue identifier is a unique integer greater than zero.
A message queue is created if either key is
IPC_PRIVATE, or key
does not have a message queue identifier associated with it, and the
IPC_CREAT bit is set in
If a new message queue is created, the data structure associated with it (the msqid_ds structure, see msgctl(2)) is initialized as follows:
IPC_EXCLare set in msgflg, and a message queue is already associated with key.
IPC_CREATwas not set in msgflg and no message queue associated with key was found.
|November 15, 2014||OpenBSD-current|