65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/* wait queue for multiple threads on kernel objects */
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/*
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* Copyright (c) 2015 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_KERNEL_INCLUDE_WAIT_Q_H_
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#define ZEPHYR_KERNEL_INCLUDE_WAIT_Q_H_
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#include <kernel_structs.h>
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#include <misc/dlist.h>
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#include <misc/rb.h>
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#include <ksched.h>
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#include <sched_priq.h>
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#include <timeout_q.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef CONFIG_WAITQ_SCALABLE
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#define _WAIT_Q_FOR_EACH(wq, thread_ptr) \
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RB_FOR_EACH_CONTAINER(&(wq)->waitq.tree, thread_ptr, base.qnode_rb)
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static inline void z_waitq_init(_wait_q_t *w)
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{
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w->waitq = (struct _priq_rb) {
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.tree = {
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.lessthan_fn = z_priq_rb_lessthan
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}
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};
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}
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static inline struct k_thread *z_waitq_head(_wait_q_t *w)
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{
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return (struct k_thread *)rb_get_min(&w->waitq.tree);
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}
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#else /* !CONFIG_WAITQ_SCALABLE: */
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#define _WAIT_Q_FOR_EACH(wq, thread_ptr) \
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SYS_DLIST_FOR_EACH_CONTAINER(&((wq)->waitq), thread_ptr, \
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base.qnode_dlist)
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static inline void z_waitq_init(_wait_q_t *w)
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{
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sys_dlist_init(&w->waitq);
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}
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static inline struct k_thread *z_waitq_head(_wait_q_t *w)
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{
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return (struct k_thread *)sys_dlist_peek_head(&w->waitq);
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}
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#endif /* !CONFIG_WAITQ_SCALABLE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_KERNEL_INCLUDE_WAIT_Q_H_ */
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