rtems - RTEMS Kernel, file-systems, drivers, BSPs, samples, and testsuite.

	Commit message (Collapse)	Author	Age	Files	Lines
*	score: Implement scheduler helping protocol	Sebastian Huber	2014-07-09	1	-0/+2
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	The following scheduler operations return a thread in need for help - 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. Add a new ask for help scheduler operation. This operation is used by _Scheduler_Ask_for_help() to help threads in need for help returned by the operations mentioned above. This operation is also used by _Scheduler_Thread_change_resource_root() in case the root of a resource sub-tree changes. A use case is the ownership change of a resource. In case it is not possible to schedule a thread in need for help, then the corresponding scheduler node will be placed into the set of ready scheduler nodes of the scheduler instance. Once a state change from ready to scheduled happens for this scheduler node it may be used to schedule the thread in need for help.
*	score: Rename _Node_get() to _Thread_get_node()	Sebastian Huber	2014-07-08	1	-1/+1
\| \| \| \| \| \|	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: Replace _Scheduler_Allocate/Free()	Sebastian Huber	2014-06-04	1	-0/+35
	Replace _Scheduler_Allocate() with _Scheduler_Node_initialize(). Remove the return status and thus the node initialization must be always successful. Rename _Scheduler_Free() to _Scheduler_Node_destroy().