Changeset 11944b9b in rtems for c/src

Timestamp:
01/13/00 19:32:50 (24 years ago)
Author:
Joel Sherrill <joel.sherrill@…>
Branches:
4.10, 4.11, 4.8, 4.9, 5, master
Children:
b8c9883
Parents:
3e7a0fd
Message:

POSIX message queues now include complete functionality including
blocking sends when the queue is full. The SuperCore? was enhanced
to support blocking on send. The existing POSIX API was debugged
and numerous test cases were added to psxmsgq01 by Jennifer Averett.
SuperCore? enhancements and resulting modifications to other APIs
were done by Joel.

There is one significant point of interpretation for the POSIX API.
What happens to threads already blocked on a message queue when the
mode of that same message queue is changed from blocking to non-blocking?
We decided to unblock all waiting tasks with an EAGAIN error just
as if a non-blocking version of the same operation had returned
unsatisfied. This case is not discussed in the POSIX standard and
other implementations may have chosen differently.

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