mq_close(3rt) [sunos man page]
mq_close(3RT) Realtime Library Functions mq_close(3RT) NAME
mq_close - close a message queue SYNOPSIS
cc [ flag... ] file... -lrt [ library... ] #include <mqueue.h> int mq_close(mqd_t mqdes); DESCRIPTION
The mq_close() function removes the association between the message queue descriptor, mqdes, and its message queue. The results of using this message queue descriptor after successful return from this mq_close(), and until the return of this message queue descriptor from a subsequent mq_open(3RT), are undefined. If the process (or thread) has successfully attached a notification request to the message queue via this mqdes, this attachment is removed and the message queue is available for another process to attach for notification. RETURN VALUES
Upon successful completion, mq_close() returns 0; otherwise, the function returns -1 and sets errno to indicate the error condition. ERRORS
The mq_close() function will fail if: EBADF The mqdes argument is an invalid message queue descriptor. ENOSYS The mq_open() function is not supported by the system. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mqueue.h(3HEAD), mq_notify(3RT), mq_open(3RT), mq_unlink(3RT), attributes(5), standards(5) NOTES
Solaris 2.6 was the first release to support the Asynchronous Input and Output option. Prior to this release, this function always returned -1 and set errno to ENOSYS. SunOS 5.10 28 Jun 2002 mq_close(3RT)
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mq_getattr(3RT) Realtime Library Functions mq_getattr(3RT) NAME
mq_getattr - get message queue attributes SYNOPSIS
cc [ flag... ] file... -lrt [ library... ] #include <mqueue.h> int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat); DESCRIPTION
The mqdes argument specifies a message queue descriptor. The mq_getattr() function is used to get status information and attributes of the message queue and the open message queue description associated with the message queue descriptor. The results are returned in the mq_attr structure referenced by the mqstat argument. Upon return, the following members will have the values associated with the open message queue description as set when the message queue was opened and as modified by subsequent mq_setattr(3RT) calls: mq_flags message queue flags The following attributes of the message queue are returned as set at message queue creation: mq_maxmsg maximum number of messages mq_msgsize maximum message size mq_curmsgs number of messages currently on the queue. RETURN VALUES
Upon successful completion, the mq_getattr() function returns 0. Otherwise, the function returns -1 and sets errno to indicate the error. ERRORS
The mq_getattr() function will fail if: EBADF The mqdes argument is not a valid message queue descriptor. ENOSYS The mq_getattr() function is not supported by the system. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
msgctl(2), msgget(2), msgrcv(2), msgsnd(2), mqueue.h(3HEAD), mq_open(3RT), mq_send(3RT), mq_setattr(3RT), attributes(5), standards(5) NOTES
Solaris 2.6 was the first release to support the Asynchronous Input and Output option. Prior to this release, this function always returned -1 and set errno to ENOSYS. SunOS 5.10 28 Jun 2002 mq_getattr(3RT)