[rtems-docs commit] c-user: Add TAS and TTAS terms

Sebastian Huber sebh at rtems.org
Fri Feb 3 10:56:24 UTC 2017

Module:    rtems-docs
Branch:    master
Commit:    90a3c414ce86abcdef261579be6570a8b559498e
Changeset: http://git.rtems.org/rtems-docs/commit/?id=90a3c414ce86abcdef261579be6570a8b559498e

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
--- a/c-user/glossary.rst
+++ b/c-user/glossary.rst
@@ -668,6 +668,9 @@ Glossary
       The system on which the application will ultimately execute.
+   TAS
+      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.
+   TTAS
+      An acronym for Test and Test-And-Set.
    user extensions
       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
--- a/c-user/symmetric_multiprocessing_services.rst
+++ b/c-user/symmetric_multiprocessing_services.rst
@@ -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

More information about the vc mailing list