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Diffstat (limited to 'c-user/message_manager.rst')
| -rw-r--r-- | c-user/message_manager.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/c-user/message_manager.rst b/c-user/message_manager.rst index 3132f2c..0289dca 100644 --- a/c-user/message_manager.rst +++ b/c-user/message_manager.rst @@ -273,7 +273,8 @@ DESCRIPTION: specified, waiting tasks are serviced in First In-First Out order. NOTES: - This directive will not cause the calling task to be preempted. + This directive may cause the calling task to be preempted due to an + obtain and release of the object allocator mutex. The following message queue attribute constants are defined by RTEMS: @@ -396,6 +397,9 @@ DESCRIPTION: message buffers is reclaimed by RTEMS. NOTES: + This directive may cause the calling task to be preempted due to an + obtain and release of the object allocator mutex. + The calling task will be preempted if its preemption mode is enabled and one or more local tasks with a higher priority than the calling task are waiting on the deleted queue. The calling task will NOT be preempted if |