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* score: Introduce map priority scheduler operationSebastian Huber2016-06-2214-16/+174
| | | | | | | | | | | Introduce map/unmap priority scheduler operations to map thread priority values from/to the user domain to/from the scheduler domain. Use the map priority operation to validate the thread priority. The EDF schedulers use this new operation to distinguish between normal priorities and priorities obtain through a job release. Update #2173. Update #2556.
* score: Delete unused _Scheduler_Priority_compare()Sebastian Huber2016-06-2212-107/+5
| | | | | By convention, thread priorities must be integers in RTEMS. Smaller values represent more important threads.
* rtems: Rework RTEMS API to SuperCore prioritySebastian Huber2016-06-221-0/+2
| | | | | Use same structure as POSIX API for thread priority conversion to/from SuperCore.
* posix: Rework sporadic server scheduling policySebastian Huber2016-06-221-1/+1
| | | | | | | | | | | | | | Instead of lowering the priority in case the initial budget is consumed raise the priority for each new period. Restore the normal priority once the initial budget is consumed. This makes it later easier to combine the high priority phase with temporary priority boosts (e.g. via priority ceiling and inheritance). Use the thread lock to protect the POSIX thread attributes instead of the thread state lock. This makes it easier to change the thread priority and keep the POSIX attributes consistent. Fixes a false positive use of uninitialized variable warning.
* posix: Delete POSIX_API_Control::schedparamSebastian Huber2016-06-221-1/+0
| | | | This field was redundant.
* posix: Delete POSIX_API_Control::schedpolicySebastian Huber2016-06-221-1/+0
| | | | This field was redundant.
* Rename and move RTEMS_PRINTF_ATTRIBUTE()Sebastian Huber2016-06-221-0/+11
| | | | | Rename RTEMS_PRINTF_ATTRIBUTE() into RTEMS_PRINTFLIKE() (similar to <sys/cdefs.h> __printflike()) and move it to <rtems/score/basedefs.h>.
* score: Refine system initialization orderSebastian Huber2016-06-201-3/+13
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* score: _Scheduler_priority_Ready_queue_initializeSebastian Huber2016-06-141-4/+5
| | | | | Use priority maximum of scheduler instance. This avoids a potential memory corruption on SMP configurations.
* score: Add an SMP sequence lock implementationSebastian Huber2016-06-091-0/+173
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* score: Use builtin for _Bitfield_Find_first_bit()Sebastian Huber2016-06-081-0/+2
| | | | | | In case the CPU architecture provides no specialized _CPU_Bitfield_Find_first_bit() macro, then use the __builtin_clz() builtin in case __GNUC__ is defined.
* score: Inline _Bitfield_Find_first_bit()Sebastian Huber2016-06-081-32/+23
| | | | Turn _Bitfield_Find_first_bit() macro into an inline function.
* score: Define _Priority_Bits_index() onceSebastian Huber2016-06-081-25/+13
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* score: Define _Priority_Mask() onceSebastian Huber2016-06-081-21/+13
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* score: Simplify priority bit map implementationSebastian Huber2016-06-082-40/+19
| | | | | | | | | | The priority bit map can deal with a maximum of 256 priority values ranging from 0 to 255. Consistently use an unsigned int for computation, due to the usual integer promotion rules. Make Priority_bit_map_Word definition architecture-independent and define it to uint16_t. This was already the case for all architectures except PowerPC. Adjust the PowerPC bitmap support accordingly.
* score: Delete CPU_USE_GENERIC_BITFIELD_DATASebastian Huber2016-06-081-6/+2
| | | | | | Rename __log2table into _Bitfield_Leading_zeros since it acually returns the count of leading zeros of an 8-bit integer. The value for zero is a bit odd. Provide it unconditionally.
* rtems: Fix no protocol mutex releaseSebastian Huber2016-06-061-43/+11
| | | | | | | | | | | | | | | | The Classic binary semaphores without a locking protocol (RTEMS_BINARY_SEMAPHORE) could be released by everyone, e.g. in contrast to the POSIX mutexes (all variants) or the Classic binary semphores with priority inheritance or ceiling, there was no owner check in the release path. This behaviour was a bit unexpected and not documented. Add an owner check to the release path. Update sptests/sp42 accordingly. This change has nothing to do with the simple binary semaphores (RTEMS_SIMPLE_BINARY_SEMAPHORE) which have no owner at all. Update #2725
* score: Maybe fix _Thread_Lock_acquire()Sebastian Huber2016-06-022-42/+7
| | | | | | | The approach with the generation number was broken. The load/store of the current lock, the thread queue and the thread queue operations were not properly synchronized. Under certain conditions on a PowerPC T4240 old thread queue operations operated on a new thread queue (NULL pointer).
* score: Fix _Thread_Lock_acquire()Sebastian Huber2016-06-011-11/+12
| | | | | | | | | A read-modify-write operation is necessary to read the last value written. See for example C11 standard or Power ISA 2.07, Book II: Power ISA Virtual Environment Architecture, Section 1.6.3 Memory Coherence Required [Category: Memory Coherence] and Section 1.7.3 Atomic Update.
* score: Use owner of thread queue for CORE mutexSebastian Huber2016-05-302-13/+8
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* score: Rework CORE inherit priority mutexSebastian Huber2016-05-303-205/+109
| | | | | Provide dedicated seize and surrender methods for inherit priority mutexes. This eliminates CORE_mutex_Attributes.
* score: Rework CORE priority ceiling mutexSebastian Huber2016-05-302-94/+180
| | | | | Rework seize and surrender methods to use CORE_ceiling_mutex_Control. This eliminates CORE_mutex_Disciplines.
* score: Add CORE mutex variantsSebastian Huber2016-05-302-32/+188
| | | | | | | | Add CORE_recursive_mutex_Control and CORE_ceiling_mutex_Control to avoid the run-time evaluation of attributes to figure out how a particular mutex methods should behave. Start with the no protocol variants. This eliminates the CORE_MUTEX_DISCIPLINES_FIFO and CORE_MUTEX_DISCIPLINES_PRIORITY disciplines.
* rtems: Simplify rtems_semaphore_delete()Sebastian Huber2016-05-302-28/+0
| | | | | Due to the unified status codes, we can now use a common flush and destroy method for semaphore and mutex variants.
* score: Simplify CORE mutexSebastian Huber2016-05-302-9/+0
| | | | | Remove superfluous support for simple binary semaphores. With this we can get rid of the CORE_MUTEX_NESTING_BLOCKS variant.
* score: Add semaphore variantsSebastian Huber2016-05-302-43/+28
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* score: Use thread queue lock for MrsPSebastian Huber2016-05-302-10/+17
| | | | | | Replace the ISR lock in MRSP_Control with a thread queue. This simplifies the Classic semaphore implementation. Only the lock part of the thread queue is used.
* score: _CORE_mutex_Check_dispatch_for_seize()Sebastian Huber2016-05-306-46/+59
| | | | | | | | | | | 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 Huber2016-05-303-26/+38
| | | | | | 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 Huber2016-05-302-12/+21
| | | | | | 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 Huber2016-05-2613-376/+281
| | | | | | | | | | | 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.
* Fix semaphore post overflow statusSebastian Huber2016-05-261-1/+2
| | | | Close #2720.
* posix: Fix pthread_spin_unlock() error statusSebastian Huber2016-05-251-6/+2
| | | | Close #2719.
* score: Move thread queue MP callout to contextSebastian Huber2016-05-259-702/+434
| | | | | | | | 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 Huber2016-05-256-92/+8
| | | | | Get rid of the mp_id parameter used for some thread queue methods. Use THREAD_QUEUE_QUEUE_TO_OBJECT() instead.
* score: Move thread queue object supportSebastian Huber2016-05-252-20/+27
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* mpci: Fix thread queue flush methodSebastian Huber2016-05-252-49/+30
| | | | | | | 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: Fix blocking _CORE_message_queue_Submit()Sebastian Huber2016-05-241-3/+1
| | | | Close #2718.
* score: _CORE_message_queue_Seize()Sebastian Huber2016-05-241-3/+0
| | | | Delete unused parameter.
* score: _CORE_semaphore_Seize()Sebastian Huber2016-05-201-2/+0
| | | | Delete unused parameter.
* Replace *_Get_interrupt_disable() with *_Get()Sebastian Huber2016-05-201-1/+1
| | | | | Uniformly use *_Get() to get an object by identifier with a lock context.
* score: Rename _Objects_Get_local()Sebastian Huber2016-05-202-2/+2
| | | | | | Rename _Objects_Get_local() into _Objects_Get(). Confusions with the previous _Objects_Get() function are avoided since the Objects_Locations parameter is gone.
* score: Delete unused _Objects_Get_isr_disable()Sebastian Huber2016-05-201-42/+0
| | | | Delete now unused Objects_Locations.
* mpci: Simplify _Objects_MP_Is_remote()Sebastian Huber2016-05-202-11/+11
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* score: Add const to _RBTree_Find_inline()Sebastian Huber2016-05-201-8/+18
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* score: Delete unused _Objects_Get_local_object()Sebastian Huber2016-05-201-27/+0
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* score: Use _RBTree_Insert_inline()Sebastian Huber2016-05-201-15/+0
| | | | | | Use _RBTree_Insert_inline() for priority thread queues. Update #2556.
* score: Add per scheduler instance maximum prioritySebastian Huber2016-05-206-8/+22
| | | | | | | | | | | The priority values are only valid within a scheduler instance. Thus, the maximum priority value must be defined per scheduler instance. The first scheduler instance defines PRIORITY_MAXIMUM. This implies that RTEMS_MAXIMUM_PRIORITY and POSIX_SCHEDULER_MAXIMUM_PRIORITY are only valid for threads of the first scheduler instance. Further API/implementation changes are necessary to fix this. Update #2556.
* score: Remove the Giant lockSebastian Huber2016-05-202-181/+0
| | | | Update #2555.
* score: Rename _ISR_Flash() into _ISR_Local_flash()Sebastian Huber2016-05-202-3/+3
| | | | | | This is a preparation to remove the Giant lock. Update #2555.
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