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https://github.com/zephyrproject-rtos/zephyr
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cc4180074d
Updating the micro kernel structures and variable names to create a more meaningful context by their name. Change-Id: Ie7b14787d36d99ed131db6ac3d4fbb652dc39b57 Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
119 lines
3.9 KiB
C
119 lines
3.9 KiB
C
/* microkernel/ticks.h - microkernel tick header file */
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/*
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* Copyright (c) 1997-2015 Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TICKS_H
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#define TICKS_H
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/* includes */
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#include <nanokernel.h>
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#include <microkernel/k_struct.h>
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#include <clock_vars.h>
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/* externs */
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int K_ticker(int event);
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extern K_TIMER *_k_timer_list_head;
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extern K_TIMER *_k_timer_list_tail;
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extern struct nano_lifo _k_timer_free;
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extern K_TIMER K_TimerBlocks[]; /* array of microkernel timer objects */
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extern const knode_t _k_this_node;
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extern void scheduler_time_slice_set(int32_t t, kpriority_t p);
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/*******************************************************************************
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*
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* _timer_id_to_ptr - convert timer pointer to timer object identifier
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*
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* This routine converts a timer pointer into a timer object identifier.
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*
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* This algorithm relies on the fact that subtracting two pointers that point
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* to elements of an array returns the difference between the array subscripts
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* of those elements. (That is, "&a[j]-&a[i]" returns "j-i".)
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*
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*
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* RETURNS: timer object identifier
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*/
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static inline ktimer_t _timer_ptr_to_id(K_TIMER *timer)
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{
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return (ktimer_t)((_k_this_node << 16) +
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(uint32_t)(timer - &K_TimerBlocks[0]));
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}
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/*******************************************************************************
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*
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* _timer_id_to_ptr - convert timer object identifier to timer pointer
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*
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* This routine converts a timer object identifier into a timer pointer.
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*
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* RETURNS: timer pointer
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*/
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static inline K_TIMER *_timer_id_to_ptr(ktimer_t timer)
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{
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return &K_TimerBlocks[OBJ_INDEX(timer)];
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}
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extern uint32_t task_node_cycle_get_32(void);
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extern int32_t task_node_tick_get_32(void);
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extern int64_t task_node_tick_get(void);
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extern ktimer_t task_timer_alloc(void);
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extern void task_timer_free(ktimer_t timer);
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extern void task_timer_start(ktimer_t timer,
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int32_t duration,
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int32_t Tr,
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ksem_t sema);
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extern void task_timer_restart(ktimer_t timer, int32_t duration, int32_t Tr);
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extern void task_timer_stop(ktimer_t timer);
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extern int32_t task_node_tick_delta(int64_t *reftime);
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extern void task_sleep(int32_t ticks);
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extern int task_node_workload_get(void);
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extern void workload_time_slice_set(int32_t t);
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extern int kernel_idle(void);
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#define isr_node_cycle_get_32() task_node_cycle_get_32()
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#define isr_node_tick_get_32() task_node_tick_get_32()
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#define isr_node_tick_get() task_node_tick_get()
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#ifdef __cplusplus
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}
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#endif
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#endif /* TICKS_H */
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