99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
#ifndef INCLUDED_OS_SYSTICK_H
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#define INCLUDED_OS_SYSTICK_H
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#include <stdatomic.h>
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#ifndef INCLUDED_OS_TYPES_H
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#include <os_types.h>
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#endif /*INCLUDED_OS_TYPES_H*/
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#ifndef INCLUDED_OS_COMPILER_H
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#include <os_compiler.h>
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#endif /*INCLUDED_OS_COMPILER_H*/
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#ifndef INCLUDED_OS_CRITICAL_H
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#include <os_critical.h>
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#endif /*INCLUDED_OS_CRITICAL_H*/
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#ifndef INCLUDED_OS_SCHED_H
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#include <os_sched.h>
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#endif /*INCLUDED_OS_SCHED_H*/
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#ifndef INCLUDED_OS_YIELD_LIST_H
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#include <os_yield_list.h>
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#endif /*INCLUDED_OS_YIELD_LIST_H*/
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#ifndef INCLUDED_OS_TIMEWHEEL_H
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#include <os_timewheel.h>
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#endif /*INCLUDED_OS_TIMEWHEEL_H*/
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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extern volatile os_tick_t g_os_systick_ticks;
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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OS_STATIC_FORCE_INLINE
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void os_systick_tick(void){
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os_critical_enter_in_isr();
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os_bool_t need_sched_flag = OS_FALSE;
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g_os_systick_ticks++;
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if(g_os_sched_current_task_p && g_os_sched_current_task_p->state == kOsTaskState_Running){
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if(g_os_sched_current_task_p->remain_ticks>0
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&& (g_os_sched_current_task_p->remain_ticks <= g_os_sched_current_task_p->init_ticks)){
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g_os_sched_current_task_p->remain_ticks--;
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if(g_os_sched_current_task_p->remain_ticks==0){
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// 时间窗用完了
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g_os_sched_current_task_p->remain_ticks = g_os_sched_current_task_p->init_ticks; // 重置时间窗
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os_yield_list_insert((os_task_t*)g_os_sched_current_task_p); // 加入yield列表
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need_sched_flag = OS_TRUE;
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}
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}
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}
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os_err_t err = os_timewheel_tick();
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if(err==OS_TIMEWHEEL_TICK_NEED_SCHEDULE){
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need_sched_flag = OS_TRUE;
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}
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os_critical_leave_in_isr();
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if(need_sched_flag == OS_TRUE){
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os_sched_in_isr();
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}
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}
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OS_STATIC_FORCE_INLINE
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os_tick_t os_systick_get(void){
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return g_os_systick_ticks;
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}
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OS_STATIC_FORCE_INLINE
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os_tick_t os_systick_safe_get(void) {
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os_critical_enter();
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const os_tick_t ticks = g_os_systick_ticks;
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os_critical_leave();
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return ticks;
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}
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OS_STATIC_FORCE_INLINE
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os_tick_t os_systick_safe_get_in_isr(void) {
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os_critical_enter_in_isr();
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const os_tick_t ticks = g_os_systick_ticks;
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os_critical_leave_in_isr();
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return ticks;
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}
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OS_STATIC_FORCE_INLINE
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os_bool_t os_systick_is_timeout(os_tick_t start_tick, os_tick_t timeout_ticks) {
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volatile os_tick_t end_ticks = g_os_systick_ticks;
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return (end_ticks - start_tick) >= timeout_ticks;
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}
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#endif /*INCLUDED_OS_SYSTICK_H*/
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