| Commit message (Collapse) | Author | Age | Files | Lines |
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Add the special thread queue name _Thread_queue_Object_name to mark
thread queues embedded in an object with identifier. Using the special
thread state STATES_THREAD_QUEUE_WITH_IDENTIFIER is not reliable for
this purpose since the thread wait information and thread state are
protected by different SMP locks in separate critical sections. Remove
STATES_THREAD_QUEUE_WITH_IDENTIFIER.
Add and use _Thread_queue_Object_initialize().
Update #2858.
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Add thread state bit to identify thread queues that are embedded in an
object with identifier.
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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.
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Delete unused _Thread_queue_Enqueue() and rename
_Thread_queue_Enqueue_critical() to _Thread_queue_Enqueue().
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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.
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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
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Due to the unified status codes, we can now use a common flush and
destroy method for semaphore and mutex variants.
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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().
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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.
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Close #2720.
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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.
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Get rid of the mp_id parameter used for some thread queue methods. Use
THREAD_QUEUE_QUEUE_TO_OBJECT() instead.
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Delete unused parameter.
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Avoid Giant lock for CORE mutex and semaphore flush and delete
operations.
Update #2555.
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Replace _Thread_queue_Flush() with _Thread_queue_Flush_critical() and
add a filter function for customization of the thread queue flush
operation.
Update #2555.
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Use proper CORE_semaphore_Status for _CORE_semaphore_Flush() and
_CORE_semaphore_Destroy() operations.
Close #2696.
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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.
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Change _Thread_queue_Flush() into a macro that invokes
_Thread_queue_Do_flush() with the parameter set defined by
RTEMS_MULTIPROCESSING. For multiprocessing configurations add the
object identifier to avoid direct use of the thread wait information.
Use mp_ prefix for multiprocessing related parameters.
Rename Thread_queue_Flush_callout to Thread_queue_MP_callout since this
type will be re-used later for other operations as well.
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This field was only by the monitor in non-multiprocessing
configurations. Add new field Thread_Wait_information::remote_id in
multiprocessing configurations and use it for the remote procedure call
thread queue.
Add _Thread_Wait_get_id() to obtain the object identifier for debug and
system information tools. Ensure the object layout via static asserts.
Add test cases to sptests/spthreadq01.
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Remove the Thread_queue_Queue::operations field to reduce the size of
this structure. Add a thread queue operations parameter to the
_Thread_queue_First(), _Thread_queue_First_locked(),
_Thread_queue_Enqueue(), _Thread_queue_Dequeue() and
_Thread_queue_Flush() functions. This is a preparation patch to reduce
the size of several synchronization objects.
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Separate the thread queue heads and lock from the operations. This
enables the support for light weight objects which only support one
queuing discipline.
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Rename _CORE_semaphore_Seize_isr_disable() to _CORE_semaphore_Seize().
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Update #2273.
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Use a parameter for _Thread_queue_Enqueue() instead to reduce memory
usage.
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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.
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Use a parameter for _Thread_queue_Enqueue() instead to reduce memory
usage.
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Use ISR_lock_Context instead of ISR_Level to allow use of ISR locks for
low-level locking.
Update #2273.
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These were remnants of pre-Doxygen comment style.
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Add thread parameter to _Thread_queue_Enqueue_with_handler() to avoid
access to global _Thread_Executing.
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Move implementation specific parts of tqdata.h, threadq.h and
threadq.inl into new header file threadqimpl.h. The threadq.h contains
now only the application visible API.
Delete tqdata.h.
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Pass the executing thread as a function parameter. Obtain the executing
thread inside a thread dispatch critical section to avoid problems on
SMP.
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Move implementation specific parts of coresem.h and coresem.inl into new
header file coresemimpl.h. The coresem.h contains now only the
application visible API.
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