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* score: Delete Thread_Scheduler_control::nodeSebastian Huber2016-11-021-1/+1
| | | | Update #2556.
* score: Pass scheduler node to block operationSebastian Huber2016-11-021-4/+5
| | | | | | Changed for consistency with other scheduler operations. Update #2556.
* score: Rework thread priority managementSebastian Huber2016-09-211-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | Add priority nodes which contribute to the overall thread priority. The actual priority of a thread is now an aggregation of priority nodes. The thread priority aggregation for the home scheduler instance of a thread consists of at least one priority node, which is normally the real priority of the thread. The locking protocols (e.g. priority ceiling and priority inheritance), rate-monotonic period objects and the POSIX sporadic server add, change and remove priority nodes. A thread changes its priority now immediately, e.g. priority changes are not deferred until the thread releases its last resource. Replace the _Thread_Change_priority() function with * _Thread_Priority_perform_actions(), * _Thread_Priority_add(), * _Thread_Priority_remove(), * _Thread_Priority_change(), and * _Thread_Priority_update(). Update #2412. Update #2556.
* score: Change scheduler node init and destroySebastian Huber2016-07-011-0/+7
| | | | | | Provide the scheduler node to initialize or destroy to the corresponding operations. This makes it possible to have more than one scheduler node per thread.
* score: Change Priority_Control to 64-bitSebastian Huber2016-06-241-1/+1
| | | | | | | | A 32-bit Priority_Control limits the uptime to 49 days with a 1ms clock tick in case the EDF scheduler is used. Increase it to 64-bit to enable proper operation of the EDF scheduler, Close 2173.
* score: Move SCHEDULER_EDF_PRIO_MSBSebastian Huber2016-06-241-0/+9
| | | | This is an implementation detail of the EDF scheduler.
* score: Rework EDF schedulerSebastian Huber2016-06-221-29/+78
| | | | | | | | | Use inline red-black tree insert. Do not use shifting priorities since this is not supported by the thread queues. Due to the 32-bit Priority_Control this currently limits the uptime to 49days with a 1ms clock tick. Update #2173.
* score: Delete unused _Scheduler_Priority_compare()Sebastian Huber2016-06-221-0/+5
| | | | | By convention, thread priorities must be integers in RTEMS. Smaller values represent more important threads.
* rbtree: Add _RBTree_Minimum(), _RBTree_Maximum()Sebastian Huber2015-08-311-1/+1
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* Fix more Doxygen typosJoel Sherrill2015-03-061-1/+1
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* rbtree: Add and use RBTree_Compare_resultSebastian Huber2014-08-051-1/+1
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* Add and use RTEMS_CONTAINER_OF()Sebastian Huber2014-08-051-1/+1
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* rbtree: Reduce RBTree_Control sizeSebastian Huber2014-07-151-1/+11
| | | | | | | | | | | | 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().
* score: Rename *_Node_get() to *_Thread_get_node()Sebastian Huber2014-07-081-4/+4
| | | | | | 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.
* score: Simplify _Thread_Change_priority()Sebastian Huber2014-05-151-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | The function to change a thread priority was too complex. Simplify it with a new scheduler operation. This increases the average case performance due to the simplified logic. The interrupt disabled critical section is a bit prolonged since now the extract, update and enqueue steps are executed atomically. This should however not impact the worst-case interrupt latency since at least for the Deterministic Priority Scheduler this sequence can be carried out with a wee bit of instructions and no loops. Add _Scheduler_Change_priority() to replace the sequence of - _Thread_Set_transient(), - _Scheduler_Extract(), - _Scheduler_Enqueue(), and - _Scheduler_Enqueue_first(). Delete STATES_TRANSIENT, _States_Is_transient() and _Thread_Set_transient() since this state is now superfluous. With this change it is possible to get rid of the SCHEDULER_SMP_NODE_IN_THE_AIR state. This considerably simplifies the implementation of the new SMP locking protocols.
* score: Add and use _Scheduler_Get_context()Sebastian Huber2014-05-141-1/+1
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* score: Introduce scheduler nodesSebastian Huber2014-05-141-3/+10
| | | | | | | | | | | | 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.
* score: Static scheduler configurationSebastian Huber2014-04-151-9/+9
| | | | | | Do not allocate the scheduler control structures from the workspace. This is a preparation step for configuration of clustered/partitioned schedulers on SMP.
* score: Add scheduler control to scheduler opsSebastian Huber2014-04-041-5/+7
| | | | | Scheduler operations must be free of a global scheduler context to enable partitioned/clustered scheduling.
* score: Add and use Scheduler_EDF_ControlSebastian Huber2014-04-041-3/+10
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* Change all references of rtems.com to rtems.org.Chris Johns2014-03-211-1/+1
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* score: PR2136: Fix _Thread_Change_priority()Sebastian Huber2013-08-201-0/+56
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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