[rtems-docs commit] c-user: Add TAS and TTAS terms
sebh at rtems.org
Fri Feb 3 10:56:24 UTC 2017
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Fri Feb 3 11:55:29 2017 +0100
c-user: Add TAS and TTAS terms
c-user/glossary.rst | 6 ++++++
c-user/symmetric_multiprocessing_services.rst | 4 ++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/c-user/glossary.rst b/c-user/glossary.rst
index aab9601..2fa7e98 100644
@@ -668,6 +668,9 @@ Glossary
The system on which the application will ultimately execute.
+ An acronym for Test-And-Set.
A logically complete thread of execution. It consists normally of a set
@@ -741,6 +744,9 @@ Glossary
missed. Rate Monotonic Scheduling can be used to determine if all
deadlines will be met under transient overload.
+ An acronym for Test and Test-And-Set.
Software routines provided by the application to enhance the
functionality of RTEMS.
diff --git a/c-user/symmetric_multiprocessing_services.rst b/c-user/symmetric_multiprocessing_services.rst
index 51d4eff..01246ae 100644
@@ -643,8 +643,8 @@ variables,
Updates of the heir thread are done via a normal store operation. The thread
dispatch necessary indicator of another processor is set as a side-effect of an
inter-processor interrupt. So, this change notification works without the use
-of locks. The thread context is protected by a TTAS lock embedded in the
-context to ensure that it is used on at most one processor at a time.
+of locks. The thread context is protected by a :term:`TTAS` lock embedded in
+the context to ensure that it is used on at most one processor at a time.
Normally, only thread-specific or per-processor locks are used during a thread
dispatch. This implementation turned out to be quite efficient and no lock
contention was observed in the testsuite. The heavy-weight thread dispatch
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