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* score: Fix C/C++ compatibility issueSebastian Huber2016-09-231-4/+6
| | | | | | | | | Only use CPU_Per_CPU_control if it contains at least one filed. In GNU C empty structures have a size of zero. In C++ structures have a non-zero size. In case CPU_PER_CPU_CONTROL_SIZE is defined to zero, then this structure is not used anymore. Close #2789.
* posix: Fix pthread_spin_unlock() error statusSebastian Huber2016-05-251-6/+2
| | | | Update #2719.
* score: Fix simple timecounter supportSebastian Huber2016-01-271-2/+25
| | | | Close #2502.
* rbtree: Delete rtems_rbtree_find_control()Sebastian Huber2015-09-011-25/+0
| | | | | This function is hard to support in alternative implementations. It has no internal use case.
* score: Simplify _Thread_Lock_set()Sebastian Huber2015-07-131-11/+56
| | | | | Exploit the fact that the current thread lock must be the default thread lock and interrupts are disabled if we call _Thread_Lock_set().
* score: TypoSebastian Huber2015-07-131-2/+2
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* score: Simplify _SMP_ticket_lock_Release()Sebastian Huber2015-07-012-12/+13
| | | | | Add a SMP lock statistics pointer to SMP_lock_Stats_context and drop the SMP lock statistics parameter from _SMP_ticket_lock_Release().
* score: Accept NULL pointer in _Freechain_Put()Sebastian Huber2015-07-011-1/+2
| | | | With this a _Freechain_Put( _Freechain_Get() ) works always.
* score: Freechain handler API changesSebastian Huber2015-07-011-26/+28
| | | | | Replace the extend function with an allocator since this fits better to the current use case.
* score: Hide SMP lock profiling impl if disabledSebastian Huber2015-06-262-72/+120
| | | | The problem is that empty structures have a different size in C and C++.
* score: Simplify <rtems/score/scheduler.h>Sebastian Huber2015-06-262-4/+5
| | | | | Drop the <rtems/score/percpu.h> include since this file exposes a lot of implementation details.
* score: Simplify <rtems/system.h>Sebastian Huber2015-06-262-1/+2
| | | | | Drop the <rtems/score/percpu.h> include since this file exposes a lot of implementation details.
* score: Fix extern "C" in <rtems/score/heap.h>Sebastian Huber2015-06-251-2/+1
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* score: Simplify <rtems/score/thread.h>Sebastian Huber2015-06-253-44/+42
| | | | | | Avoid Thread_Control typedef in <rtems/score/percpu.h>. This helps to get rid of the <rtems/score/percpu.h> include in <rtems/score/thread.h> which exposes a lot of implementation details.
* score: Move default _ISR_Is_in_progress()Sebastian Huber2015-06-251-35/+1
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* score: Move SMP CPU_USE_DEFERRED_FP_SWITCH checkSebastian Huber2015-06-251-4/+0
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* Remove use ticks for statistics configure option.Joel Sherrill2015-06-151-6/+2
| | | | | | | | | | This was obsolete and broken based upon recent time keeping changes. Thie build option was previously enabled by adding USE_TICKS_FOR_STATISTICS=1 to the configure command line. This propagated into the code as preprocessor conditionals using the __RTEMS_USE_TICKS_FOR_STATISTICS__ conditional.
* score: Add _Watchdog_Preinitialize()Sebastian Huber2015-06-131-1/+22
| | | | | | Add an assert to ensure that the watchdog is the proper state for a _Watchdog_Initialize(). This helps to detect invalid initializations which may lead to a corrupt watchdog chain.
* score: Delete unused state WATCHDOG_REMOVE_ITSebastian Huber2015-06-132-19/+1
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* score: Fix compiler memory barriers for atomic opsSebastian Huber2015-06-091-6/+18
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* score: Add Thread_Control::is_fpSebastian Huber2015-06-091-0/+2
| | | | | | | | Store the floating-point unit property in the thread control block regardless of the CPU_HARDWARE_FP and CPU_SOFTWARE_FP settings. Make sure the floating-point unit is only enabled for the corresponding multilibs. This helps targets which have a volatile only floating point context like SPARC for example.
* rtems: Change CONTEXT_FP_SIZE defineSebastian Huber2015-06-031-1/+5
| | | | | | | Define CONTEXT_FP_SIZE to zero in case hardware and software floating point support is disabled. The problem is that empty structures have a different size in C and C++. In C++ they have a non-zero size leading to an overestimate of the workspace size.
* score: Replace _API_Mutex_Is_locked()Sebastian Huber2015-05-271-3/+8
| | | | Replace _API_Mutex_Is_locked() with _API_Mutex_Is_owner().
* timecounter: Use in RTEMSAlexander Krutwig2015-05-206-580/+209
| | | | | | | | Replace timestamp implementation with FreeBSD bintime and timecounters. New test sptests/sptimecounter02. Update #2271.
* timecounter: Port to RTEMSAlexander Krutwig2015-05-204-0/+252
| | | | | | New test sptests/timecounter01. Update #2271.
* timecounter: Use uint32_t instead of u_intAlexander Krutwig2015-05-191-2/+2
| | | | | | | FreeBSD assumes that u_int is a 32-bit integer type. This is wrong for some 16-bit targets supported by RTEMS. Update #2271.
* timecounter: Import from FreeBSDAlexander Krutwig2015-05-195-0/+940
| | | | Update #2271.
* score: _Thread_Dispatch_disable_critical()Sebastian Huber2015-05-195-15/+63
| | | | | | | Thread dispatching is disabled in case interrupts are disabled. To get an accurate thread dispatch disabled time it is important to use the interrupt disabled instant in case a transition from an interrupt disabled section to a thread dispatch level section happens.
* score: Add static initializers for thread queuesSebastian Huber2015-05-191-0/+34
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* score: Do not inline SMP lock if profiling enabledSebastian Huber2015-05-191-1/+56
| | | | This reduces the code size drastically.
* score: Delete _Objects_Put_for_get_isr_disable()Sebastian Huber2015-05-191-10/+0
| | | | | This function is superfluous due to the introduction of fine grained locking.
* score: Fine grained locking for MrsPSebastian Huber2015-05-192-46/+117
| | | | Update #2273.
* score: Rework _Thread_Change_priority()Sebastian Huber2015-05-195-87/+171
| | | | | | | | | | | | | Move the writes to Thread_Control::current_priority and Thread_Control::real_priority into _Thread_Change_priority() under the protection of the thread lock. Add a filter function to _Thread_Change_priority() to enable specialized variants. Avoid race conditions during a thread priority restore with the new Thread_Control::priority_restore_hint for an important average case optimizations used by priority inheritance mutexes. Update #2273.
* score: Fine grained locking for mutexesSebastian Huber2015-05-191-21/+19
| | | | Update #2273.
* score: Inline _CORE_semaphore_Surrender()Sebastian Huber2015-05-191-2/+40
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* score: Inline _CORE_semaphore_Flush()Sebastian Huber2015-05-191-2/+9
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* score: Delete _CORE_semaphore_Seize()Sebastian Huber2015-05-191-29/+1
| | | | Rename _CORE_semaphore_Seize_isr_disable() to _CORE_semaphore_Seize().
* score: Fine grained locking for semaphoresSebastian Huber2015-05-191-6/+7
| | | | Update #2273.
* score: Fine grained locking for message queuesSebastian Huber2015-05-191-12/+109
| | | | | | | | | | | Aggregate several critical sections into a bigger one. Sending and receiving messages is now protected by an ISR lock. Thread dispatching is only disabled in case a blocking operation is necessary. The message copy procedure is done inside the critical section (interrupts disabled). Thus this change may have a negative impact on the interrupt latency in case very large messages are transferred. Update #2273.
* score: Delete _CORE_message_queue_Flush_support()Sebastian Huber2015-05-191-17/+0
| | | | | Check the number of pending messages in _CORE_message_queue_Flush() to avoid race conditions.
* score: Delete Thread_queue_Control::timeout_statusSebastian Huber2015-05-194-11/+11
| | | | | Use a parameter for _Thread_queue_Enqueue() instead to reduce memory usage.
* score: New thread queue implementationSebastian Huber2015-05-193-139/+135
| | | | | | | | | Use thread wait flags for synchronization. The enqueue operation is now part of the initial critical section. This is the key change and enables fine grained locking on SMP for objects using a thread queue like semaphores and message queues. Update #2273.
* score: More thread queue operationsSebastian Huber2015-05-193-9/+121
| | | | | | | | | Move thread queue discipline specific operations into Thread_queue_Operations. Use a separate node in the thread control block for the thread queue to make it independent of the scheduler data structures. Update #2273.
* score: Add Thread_queue_OperationsSebastian Huber2015-05-194-95/+134
| | | | | | | | Replace the Thread_Priority_control with more general Thread_queue_Operations which will be used for generic priority change, timeout, signal and wait queue operations in the future. Update #2273.
* score: Add Thread_queue_Control::LockSebastian Huber2015-05-196-35/+132
| | | | | | | | | | | Move the complete thread queue enqueue procedure into _Thread_queue_Enqueue_critical(). It is possible to use the thread queue lock to protect state of the object embedding the thread queue. This enables per object fine grained locking in the future. Delete _Thread_queue_Enter_critical_section(). Update #2273.
* score: Generalize _Event_Timeout()Sebastian Huber2015-05-192-0/+27
| | | | | | | Add a thread wait timeout code. Replace _Event_Timeout() with a general purpose _Thread_Timeout() watchdog handler. Update #2273.
* score: Reduce thread wait statesSebastian Huber2015-05-192-26/+6
| | | | | | | | | | Merge THREAD_WAIT_STATE_SATISFIED, THREAD_WAIT_STATE_TIMEOUT, THREAD_WAIT_STATE_INTERRUPT_SATISFIED, and THREAD_WAIT_STATE_INTERRUPT_TIMEOUT into one state THREAD_WAIT_STATE_READY_AGAIN. This helps to write generic routines to block a thread. Update #2273.
* score: New timer server implementationSebastian Huber2015-05-191-13/+46
| | | | | | | | Use mostly the standard watchdog operations. Use a system event for synchronization. This implementation is simpler and offers better SMP performance. Close #2131.
* score: Move _Watchdog_Tickle()Sebastian Huber2015-05-191-10/+0
| | | | | | | Make internal function _Watchdog_Remove_it() static to avoid accidental usage. Update #2307.
* score: Add Watchdog_IteratorSebastian Huber2015-05-191-16/+42
| | | | | | | | | | Rewrite the _Watchdog_Insert(), _Watchdog_Remove() and _Watchdog_Tickle() functions to use iterator items to synchronize concurrent operations. This makes it possible to get rid of the global variables _Watchdog_Sync_level and _Watchdog_Sync_count which are a blocking point for scalable SMP solutions. Update #2307.
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