| Commit message (Collapse) | Author | Age | Files | Lines |
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Remove compare function and is unique indicator from the control
structure. Rename RBTree_Compare_function to RBTree_Compare. Rename
rtems_rbtree_compare_function to rtems_rbtree_compare. Provide C++
compatible initializers. Add compare function and is unique indicator
to _RBTree_Find(), _RBTree_Insert(), rtems_rbtree_find() and
rtems_rbtree_insert(). Remove _RBTree_Is_unique() and
rtems_rbtree_is_unique(). Remove compare function and is unique
indicator from _RBTree_Initialize_empty() and
rtems_rbtree_initialize_empty().
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Return a thread in need for help for the following scheduler operations
- unblock,
- change priority, and
- yield.
A thread in need for help is a thread that encounters a scheduler state
change from scheduled to ready or a thread that cannot be scheduled in
an unblock operation. Such a thread can ask threads which depend on
resources owned by this thread for help.
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This emphasizes that the scheduler node of a thread is returned and this
is not a function working with scheduler nodes like the other *_Node_*()
functions.
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The _Scheduler_Yield() was called by the executing thread with thread
dispatching disabled and interrupts enabled. The rtems_task_suspend()
is explicitly allowed in ISRs:
http://rtems.org/onlinedocs/doc-current/share/rtems/html/c_user/Interrupt-Manager-Directives-Allowed-from-an-ISR.html#Interrupt-Manager-Directives-Allowed-from-an-ISR
Unlike the other scheduler operations the locking was performed inside
the operation. This lead to the following race condition. Suppose a
ISR suspends the executing thread right before the yield scheduler
operation. Now the executing thread is not longer in the set of ready
threads. The typical scheduler operations did not check the thread
state and will now extract the thread again and enqueue it. This
corrupted data structures.
Add _Thread_Yield() and do the scheduler yield operation with interrupts
disabled. This has a negligible effect on the interrupt latency.
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Rename scheduler per-thread information into scheduler nodes using
Scheduler_Node as the base type. Use inheritance for specialized
schedulers.
Move the scheduler specific states from the thread control block into
the scheduler node structure.
Validate the SMP scheduler node state transitions in case RTEMS_DEBUG is
defined.
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Do not allocate the scheduler control structures from the workspace.
This is a preparation step for configuration of clustered/partitioned
schedulers on SMP.
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Scheduler operations must be free of a global scheduler context to
enable partitioned/clustered scheduling.
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Interrupts are disabled by the caller _Thread_Change_priority() or
_Thread_Set_transient() or directly in the scheduler operation. Thus
there is no need to use protected variants.
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Add call to _Scheduler_Schedule() in missing path after
_Thread_Set_transient() in _Thread_Change_priority(). See also
sptests/spintrcritical19.
Add thread parameter to _Scheduler_Schedule(). This parameter is
currently unused but may be used in future SMP schedulers.
Do heir selection in _Scheduler_Schedule(). Use
_Scheduler_Update_heir() for this in the particular scheduler
implementation.
Add and use _Scheduler_Generic_block().
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The yielding thread of the yield operation is now specified by a
parameter. The tick operation may be performed for each executing
thread in a SMP configuration.
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This patch is a task from GCI 2012 which improves the Doxygen
comments in the RTEMS source.
http://www.google-melange.com/gci/task/view/google/gci2012/7983216
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Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
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PR 1916/testing
* rtems/src/ratemondelete.c, score/src/schedulercbsreleasejob.c,
score/src/scheduleredfupdate.c, score/src/scheduleredfyield.c: Rework
to improve coverage.
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PR 1896/cpukit
* sapi/include/confdefs.h, score/Makefile.am, score/preinstall.am: Add
Earliest Deadline First (EDF) Scheduling Algorithm implementation.
* score/include/rtems/score/scheduleredf.h, score/src/scheduleredf.c,
score/src/scheduleredfallocate.c, score/src/scheduleredfblock.c,
score/src/scheduleredfenqueue.c,
score/src/scheduleredfenqueuefirst.c,
score/src/scheduleredfextract.c, score/src/scheduleredffree.c,
score/src/scheduleredfprioritycompare.c,
score/src/scheduleredfreleasejob.c, score/src/scheduleredfschedule.c,
score/src/scheduleredfunblock.c, score/src/scheduleredfupdate.c,
score/src/scheduleredfyield.c: New files.
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