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* score: RTEMS_PREDICT_TRUE(), RTEMS_PREDICT_FALSE()Sebastian Huber2018-07-251-8/+8
| | | | | | | Add RTEMS_PREDICT_TRUE() and RTEMS_PREDICT_FALSE() for static branch prediction hints. Close #3475.
* score: Move thread queue timeout handlingSebastian Huber2017-10-241-33/+10
| | | | | Update #3117. Update #3182.
* score: Rename function threadq support functionSebastian Huber2017-10-241-1/+1
| | | | | | | | | Rename _Thread_queue_Context_set_do_nothing_enqueue_callout() into _Thread_queue_Context_set_enqueue_do_nothing_extra(). More _Thread_queue_Context_set_enqueue_*() functions will follow. Update #3117. Update #3182.
* posix: Implement self-contained POSIX mutexSebastian Huber2017-10-051-10/+1
| | | | | | | | POSIX mutexes are now available in all configurations and no longer depend on --enable-posix. Update #2514. Update #3112.
* configure: Remove HAVE_STRUCT__THREAD_QUEUE_QUEUESebastian Huber2017-01-131-4/+0
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* score: Add Thread_queue_Queue::nameSebastian Huber2017-01-131-4/+4
| | | | Update #2858.
* score: Add STATES_THREAD_QUEUE_WITH_IDENTIFIERSebastian Huber2017-01-111-1/+1
| | | | | Add thread state bit to identify thread queues that are embedded in an object with identifier.
* score: Relax <sys/lock.h> static assertionsSebastian Huber2016-12-231-4/+4
| | | | Only require that the Newlib defined structure is big enough.
* score: Optimize _Thread_queue_Enqueue()Sebastian Huber2016-11-241-1/+4
| | | | | | | | | Move thread state for _Thread_queue_Enqueue() to the thread queue context. This reduces the parameter count of _Thread_queue_Enqueue() from five to four (ARM for example has only four function parameter registers). Since the thread state is used after several function calls inside _Thread_queue_Enqueue() this parameter was saved on the stack previously.
* score: Rename _Thread_queue_Enqueue_critical()Sebastian Huber2016-11-231-1/+1
| | | | | Delete unused _Thread_queue_Enqueue() and rename _Thread_queue_Enqueue_critical() to _Thread_queue_Enqueue().
* score: Add thread queue enqueue calloutSebastian Huber2016-11-231-1/+1
| | | | | | | Replace the expected thread dispatch disable level with a thread queue enqueue callout. This enables the use of _Thread_Dispatch_direct() in the thread queue enqueue procedure. This avoids impossible exection paths, e.g. Per_CPU_Control::dispatch_necessary is always true.
* score: Optimize self-contained objectsSebastian Huber2016-11-181-24/+10
| | | | Avoid use of the stack for the hot paths.
* score: Optimize self-contained mutexesSebastian Huber2016-11-041-32/+67
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* score: Introduce thread resource count methodsSebastian Huber2016-11-031-7/+7
| | | | | This makes it easier to conditionally enable/disable the thread resource count usage.
* score: Rework thread priority managementSebastian Huber2016-09-211-17/+4
| | | | | | | | | | | | | | | | | | | | | | | | | 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: Introduce Thread_queue_Lock_contextSebastian Huber2016-09-081-3/+3
| | | | | | Introduce Thread_queue_Lock_context to contain the context necessary for thread queue lock and thread wait lock acquire/release operations to reduce the Thread_Control size.
* score: Add _Thread_queue_Surrender()Sebastian Huber2016-08-111-47/+4
| | | | | Add _Thread_queue_Surrender() to unify the mutex surrender procedures which involve a thread queue operation.
* score: Add deadlock detectionSebastian Huber2016-07-271-0/+4
| | | | | | | | | | The mutex objects use the owner field of the thread queues for the mutex owner. Use this and add a deadlock detection to _Thread_queue_Enqueue_critical() for thread queues with an owner. Update #2412. Update #2556. Close #2765.
* score: Priority inherit thread queue operationsSebastian Huber2016-07-271-2/+1
| | | | | | | | | Move the priority change due to priority interitance to the thread queue enqueue operation to simplify the locking on SMP configurations. Update #2412. Update #2556. Update #2765.
* score: Simplify _Thread_queue_Boost_priority()Sebastian Huber2016-07-271-1/+1
| | | | | | | | | | Raise the priority under thread queue lock protection and omit the superfluous thread queue priority change, since the thread is extracted anyway. The unblock operation will pick up the new priority. Update #2412. Update #2556. Update #2765.
* posix: cond_timedwait remember and use clock from condattrGedare Bloom2016-07-251-2/+2
| | | | updates #2745
* cpukit: Add and use Watchdog_Discipline.Gedare Bloom2016-07-251-12/+8
| | | | | | | | | Clock disciplines may be WATCHDOG_RELATIVE, WATCHDOG_ABSOLUTE, or WATCHDOG_NO_TIMEOUT. A discipline of WATCHDOG_RELATIVE with a timeout of WATCHDOG_NO_TIMEOUT is equivalent to a discipline of WATCHDOG_NO_TIMEOUT. updates #2732
* score: _CORE_mutex_Check_dispatch_for_seize()Sebastian Huber2016-05-301-59/+66
| | | | | | | | | | | Move the safety check performed by _CORE_mutex_Check_dispatch_for_seize() out of the performance critical path and generalize it. Blocking on a thread queue with an unexpected thread dispatch disabled level is illegal in all system states. Add the expected thread dispatch disable level (which may be 1 or 2 depending on the operation) to Thread_queue_Context and use it in _Thread_queue_Enqueue_critical().
* score: Add _Thread_queue_Context_set_MP_callout()Sebastian Huber2016-05-301-2/+2
| | | | | | Add _Thread_queue_Context_set_MP_callout() to simplify _Thread_queue_Context_initialize(). This makes it possible to more easily add additional fields to Thread_queue_Context.
* score: Adjust thread queue layoutSebastian Huber2016-05-301-23/+16
| | | | | | Adjust thread queue layout according to Newlib. This makes it possible to use the same implementation for <sys/lock.h> and CORE mutexes in the future.
* score: Add Status_Control for all APIsSebastian Huber2016-05-261-5/+2
| | | | | | | | | | | Unify the status codes of the Classic and POSIX API to use the new enum Status_Control. This eliminates the Thread_Control::Wait::timeout_code field and the timeout parameter of _Thread_queue_Enqueue_critical() and _MPCI_Send_request_packet(). It gets rid of the status code translation tables and instead uses simple bit operations to get the status for a particular API. This enables translation of status code constants at compile time. Add _Thread_Wait_get_status() to avoid direct access of thread internal data structures.
* score: Move thread queue MP callout to contextSebastian Huber2016-05-251-22/+27
| | | | | | | | Drop the multiprocessing (MP) dependent callout parameter from the thread queue extract, dequeue, flush and unblock methods. Merge this parameter with the lock context into new structure Thread_queue_Context. This helps to gets rid of the conditionally compiled method call helpers.
* score: Get rid of mp_id parameterSebastian Huber2016-05-251-2/+1
| | | | | Get rid of the mp_id parameter used for some thread queue methods. Use THREAD_QUEUE_QUEUE_TO_OBJECT() instead.
* mpci: Fix thread queue flush methodSebastian Huber2016-05-251-2/+0
| | | | | | | We must call the MP callout for proxies if we unblock them after a thread queue extraction. This was missing in _Thread_queue_Flush_critical(). Move thread remove timer and unblock code to new function _Thread_Remove_timer_and_unblock().
* score: Rework MP thread queue callout supportSebastian Huber2016-04-061-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The thread queue implementation was heavily reworked to support SMP. This broke the multiprocessing support of the thread queues. This is fixed by this patch. A thread proxy is unblocked due to three reasons 1) timeout, 2) request satisfaction, and 3) extraction. In case 1) no MPCI message must be sent. This is ensured via the _Thread_queue_MP_callout_do_nothing() callout set during _Thread_MP_Allocate_proxy(). In case 2) and 3) an MPCI message must be sent. In case we interrupt the blocking operation during _Thread_queue_Enqueue_critical(), then this message must be sent by the blocking thread. For this the new fields Thread_Proxy_control::thread_queue_callout and Thread_Proxy_control::thread_queue_id are used. Delete the individual API MP callout types and use Thread_queue_MP_callout throughout. This type is only defined in multiprocessing configurations. Prefix the multiprocessing parameters with mp_ to ease code review. Multiprocessing specific parameters are optional due to use of a similar macro pattern. There is no overhead for non-multiprocessing configurations.
* score: Fix resource count for self-contained mutexSebastian Huber2015-09-141-2/+3
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* score: Implement priority boostingSebastian Huber2015-09-041-5/+10
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* score: Fix return status of mutex try acquireSebastian Huber2015-09-011-9/+9
| | | | This fixes a copy and paste error (from libbsd).
* score: Add self-contained mutex implementationSebastian Huber2015-07-301-0/+442
This mutex implementation uses a thread priority queue with a simple priority inheritance mechanism (similar to the object based mutexes). The storage space must be supplied by the user (16 bytes on 32-bit targets).
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