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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-04-30 13:12:54 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-05-19 12:00:46 +0200 |
| commit | cc18d7bec7b3c5515cb9e6cd9771d4b94309b3bd (patch) | |
| tree | 59fd8c8ca70830762e632e255a2078f22ac6a821 /cpukit/posix/include/rtems/posix/mqueueimpl.h | |
| parent | score: Delete _CORE_message_queue_Flush_support() (diff) | |
| download | rtems-cc18d7bec7b3c5515cb9e6cd9771d4b94309b3bd.tar.bz2 | |
score: Fine grained locking for message queues
Aggregate several critical sections into a bigger one. Sending and
receiving messages is now protected by an ISR lock. Thread dispatching
is only disabled in case a blocking operation is necessary. The message
copy procedure is done inside the critical section (interrupts
disabled). Thus this change may have a negative impact on the interrupt
latency in case very large messages are transferred.
Update #2273.
Diffstat (limited to 'cpukit/posix/include/rtems/posix/mqueueimpl.h')
| -rw-r--r-- | cpukit/posix/include/rtems/posix/mqueueimpl.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/cpukit/posix/include/rtems/posix/mqueueimpl.h b/cpukit/posix/include/rtems/posix/mqueueimpl.h index bfc850d990..90269bf57b 100644 --- a/cpukit/posix/include/rtems/posix/mqueueimpl.h +++ b/cpukit/posix/include/rtems/posix/mqueueimpl.h @@ -250,6 +250,21 @@ RTEMS_INLINE_ROUTINE POSIX_Message_queue_Control_fd *_POSIX_Message_queue_Get_fd location ); } + +RTEMS_INLINE_ROUTINE POSIX_Message_queue_Control_fd * +_POSIX_Message_queue_Get_fd_interrupt_disable( + mqd_t id, + Objects_Locations *location, + ISR_lock_Context *lock_context +) +{ + return (POSIX_Message_queue_Control_fd *) _Objects_Get_isr_disable( + &_POSIX_Message_queue_Information_fds, + (Objects_Id)id, + location, + lock_context + ); +} /** * @see _POSIX_Name_to_id(). |