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* score: Delete Thread_queue_Control::timeout_statusSebastian Huber2015-05-1934-57/+60
| | | | | Use a parameter for _Thread_queue_Enqueue() instead to reduce memory usage.
* score: New thread queue implementationSebastian Huber2015-05-1913-432/+266
| | | | | | | | | 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 Huber2015-05-1910-92/+282
| | | | | | | | | 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 Huber2015-05-1910-136/+205
| | | | | | | | 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 Huber2015-05-1935-169/+261
| | | | | | | | | | | 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 Huber2015-05-196-14/+51
| | | | | | | Add a thread wait timeout code. Replace _Event_Timeout() with a general purpose _Thread_Timeout() watchdog handler. Update #2273.
* score: Reduce thread wait statesSebastian Huber2015-05-194-30/+10
| | | | | | | | | | 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.
* Filesystem: Thread life protection for env changesSebastian Huber2015-05-191-10/+10
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* libcsupport: Fix umask() lockingSebastian Huber2015-05-191-7/+2
| | | | | Delete comment related to an obsolete implementation of rtems_libio_set_private_env().
* libcsupport: Avoid Giant lock in rtems_verror()Sebastian Huber2015-05-191-1/+1
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* Filesystem: Use lock for deferred releaseSebastian Huber2015-05-191-4/+17
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* libcsupport: Avoid Giant lock in _times()Sebastian Huber2015-05-191-5/+6
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* rtems: Use once mutex for timer server initSebastian Huber2015-05-191-2/+3
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* score: New timer server implementationSebastian Huber2015-05-198-507/+311
| | | | | | | | 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 Huber2015-05-194-99/+67
| | | | | | | Make internal function _Watchdog_Remove_it() static to avoid accidental usage. Update #2307.
* score: Add Watchdog_IteratorSebastian Huber2015-05-196-166/+222
| | | | | | | | | | 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.
* score: Add _Watchdog_Acquire|Release|Flash()Sebastian Huber2015-05-196-26/+56
| | | | Update #2307.
* score: Add header to _Watchdog_Remove()Sebastian Huber2015-05-1928-33/+92
| | | | | | | | Add watchdog header parameter to _Watchdog_Remove() to be in line with the other operations. Add _Watchdog_Remove_ticks() and _Watchdog_Remove_seconds() for convenience. Update #2307.
* score: Optimize _Thread_queue_Compare_priority()Sebastian Huber2015-05-191-9/+10
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* score: Delete STATES_WAITING_ON_THREAD_QUEUESebastian Huber2015-05-193-30/+7
| | | | | | Avoid the usage of the current thread state in _Thread_queue_Extract_with_return_code() since thread queues should not know anything about thread states.
* score: _Thread_queue_Extract()Sebastian Huber2015-05-1911-33/+19
| | | | | Remove thread queue parameter from _Thread_queue_Extract() since the current thread queue is stored in the thread control block.
* score: Add _SMP_Assert()Sebastian Huber2015-05-191-0/+9
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* score: Fix assertSebastian Huber2015-05-191-2/+4
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* score: Avoid Giant lock in _Objects_Id_to_name()Sebastian Huber2015-05-121-2/+8
| | | | This prevents a deadlock situation in the capture engine.
* score: Fix scheduler helping protocolSebastian Huber2015-05-113-104/+202
| | | | | | Account for priority changes of threads executing in a foreign partition. Exchange idle threads in case a victim node uses an idle thread and the new scheduled node needs an idle thread.
* score: Fix Thread_Control and Thread_Proxy_controlSebastian Huber2015-05-062-59/+84
| | | | | Fix layout of the common block of Thread_Control and Thread_Proxy_control. Ensure that the offsets match.
* score: Delete unused Thread_queue_Timeout_calloutSebastian Huber2015-04-301-9/+0
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* libmisc/cpuuse: Top support for current load.Chris Johns2015-04-291-195/+541
| | | | | | | | | | | | | | | | | | The cpuuse top command now supports the current load where the list of tasks is ordered based on the current load rather than the total cpu usage. This lets you see what is using the processor at any specific instance. The ability to sort on a range of thread values is now supported. Added memory usage stats for unified and separate workspace and C heaps as well as displaying the allocated stack space. Added a few more command keys to refresh the display, show all tasks in the system, control the lines display and a scrolling mode that does not clear the display on each refresh. Removed support for tick kernel builds. The tick support in the kernel is to be removed.
* dosfs: Fix warning fixSebastian Huber2015-04-271-1/+1
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* posix: Use right thread dispatch disable functionSebastian Huber2015-04-241-1/+1
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* score: Fix POSIX thread joinSebastian Huber2015-04-233-2/+5
| | | | | | | | | | | | A thread join is twofold. There is one thread that exists and an arbitrary number of threads that wait for the thread exit (one-to-many relation). The exiting thread may want to wait for a thread that wants to join its exit (STATES_WAITING_FOR_JOIN_AT_EXIT in _POSIX_Thread_Exit()). On the other side we need a thread queue for all the threads that wait for the exit of one particular thread (STATES_WAITING_FOR_JOIN in pthread_join()). Update #2035.
* score: Delete _Thread_queue_Dequeue_priority()Sebastian Huber2015-04-231-19/+0
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* score: _CORE_mutex_Seize_interrupt_blocking()Sebastian Huber2015-04-232-7/+15
| | | | | Move some code into _CORE_mutex_Seize_interrupt_blocking() so that the thread queue handling is in one place.
* score: Delete Thread_queue_Control::stateSebastian Huber2015-04-2327-61/+64
| | | | | Use a parameter for _Thread_queue_Enqueue() instead to reduce memory usage.
* score: Fix priority message queue insertSebastian Huber2015-04-232-95/+44
| | | | | | | | Move the linear search into a critical section to avoid corruption due to higher priority interrupts. The interrupt disable time depends now on the count of pending messages. Close #2328.
* score: Delete _CORE_RWLock_Timeout()Sebastian Huber2015-04-227-92/+14
| | | | | This function was identical to _Thread_queue_Timeout(). This makes _Thread_queue_Enqueue_with_handler() obsolete.
* score: Delete bogus THREAD_QUEUE_WAIT_FOREVERSebastian Huber2015-04-228-12/+7
| | | | | It makes no sense to use this indirection since the type for timeout values is Watchdog_Interval.
* score: Delete object control block ISR lockSebastian Huber2015-04-216-181/+1
| | | | | | | The Objects_Control::Lock was a software layer violation. It worked only for the threads since they are somewhat special. Update #2273.
* score: Add _Thread_Get_interrupt_disable()Sebastian Huber2015-04-219-102/+139
| | | | | | | | | | Remove _Thread_Acquire() and _Thread_Acquire_for_executing(). Add utility functions for the default thread lock. Use the default thread lock for the RTEMS events. There is no need to disable thread dispatching and a Giant acquire in _Event_Timeout() since this was already done by the caller. Update #2273.
* score: Modify _Thread_Dispatch_disable_critical()Sebastian Huber2015-04-212-9/+11
| | | | | Return the current processor to be in line with _Thread_Disable_dispatch().
* score: _Objects_Get_isr_disable()Sebastian Huber2015-04-214-9/+14
| | | | | | | | Do not disable thread dispatching and do not acquire the Giant lock. This makes it possible to use this object get variant for fine grained locking. Update #2273.
* score: _Objects_Get_isr_disable()Sebastian Huber2015-04-2111-55/+65
| | | | | | | Use ISR_lock_Context instead of ISR_Level to allow use of ISR locks for low-level locking. Update #2273.
* score: Add _ISR_lock_ISR_disable/enable()Sebastian Huber2015-04-202-2/+38
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* score: Refactor SMP cache manager supportSebastian Huber2015-04-203-8/+167
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* or1k-utility.h: Add missing end of C++ header patternJoel Sherrill2015-04-171-0/+4
| | | | closes 2326.
* score: Improve assertMartin Galvan2015-04-171-1/+5
| | | | | While cpu_self->thread_dispatch_disable_level shouldn't ever be zero, it would be better to check it before doing the decrement.
* Fix build for non-SPARC targetsSebastian Huber2015-04-172-2/+15
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* sapi: Avoid declaration in source, fix typeSebastian Huber2015-04-173-5/+5
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* score: Fix _TOD_Set_with_timestamp()Sebastian Huber2015-04-171-4/+5
| | | | | Update the current time before the watchdog adjust so that timer routines observe the new time.
* DRVMGR: remove struct driver registration funcDaniel Hellstrom2015-04-173-117/+44
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