diff options
| author | Meco Man <[email protected]> | 2022-01-21 17:06:00 -0500 |
|---|---|---|
| committer | Bernard Xiong <[email protected]> | 2022-01-22 16:43:51 +0800 |
| commit | e10173daff840ea8e58d20c59d0e8fb9517a3bae (patch) | |
| tree | 843e3121c2e57b28e284ce66d0d74561e00d11ed /components/drivers/src/waitqueue.c | |
| parent | 1aa96f34cd327dbb913bb90147bb96a1f19f0d92 (diff) | |
[device] rename src folder as ipc
Diffstat (limited to 'components/drivers/src/waitqueue.c')
| -rw-r--r-- | components/drivers/src/waitqueue.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/components/drivers/src/waitqueue.c b/components/drivers/src/waitqueue.c deleted file mode 100644 index 4c6bb7e97f..0000000000 --- a/components/drivers/src/waitqueue.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * Copyright (c) 2006-2021, RT-Thread Development Team - * - * SPDX-License-Identifier: Apache-2.0 - * - * Change Logs: - * Date Author Notes - * 2018/06/26 Bernard Fix the wait queue issue when wakeup a soon - * to blocked thread. - */ - -#include <stdint.h> - -#include <rthw.h> -#include <rtdevice.h> -#include <rtservice.h> - -/** - * @brief This function will insert a node to the wait queue. - * - * @param queue is a pointer to the wait queue. - * - * @param node is a pointer to the node to be inserted. - */ -void rt_wqueue_add(rt_wqueue_t *queue, struct rt_wqueue_node *node) -{ - rt_base_t level; - - level = rt_hw_interrupt_disable(); - rt_list_insert_before(&(queue->waiting_list), &(node->list)); - rt_hw_interrupt_enable(level); -} - -/** - * @brief This function will remove a node from the wait queue. - * - * @param queue is a pointer to the wait queue. - * - * @param node is a pointer to the node to be removed. - */ -void rt_wqueue_remove(struct rt_wqueue_node *node) -{ - rt_base_t level; - - level = rt_hw_interrupt_disable(); - rt_list_remove(&(node->list)); - rt_hw_interrupt_enable(level); -} - -/** - * @brief This function is the default wakeup function, but it doesn't do anything in actual. - * It always return 0, user should define their own wakeup function. - * - * @param queue is a pointer to the wait queue. - * - * @param key is the wakeup condition. - * - * @return always return 0. - */ -int __wqueue_default_wake(struct rt_wqueue_node *wait, void *key) -{ - return 0; -} - -/** - * @brief This function will wake up a pending thread on the specified waiting queue that meets the conditions. - * - * @param queue is a pointer to the wait queue. - * - * @param key is the wakeup conditions, but it is not effective now, because - * default wakeup function always return 0. - * If user wants to use it, user should define their own wakeup function. - */ -void rt_wqueue_wakeup(rt_wqueue_t *queue, void *key) -{ - rt_base_t level; - register int need_schedule = 0; - - rt_list_t *queue_list; - struct rt_list_node *node; - struct rt_wqueue_node *entry; - - queue_list = &(queue->waiting_list); - - level = rt_hw_interrupt_disable(); - /* set wakeup flag in the queue */ - queue->flag = RT_WQ_FLAG_WAKEUP; - - if (!(rt_list_isempty(queue_list))) - { - for (node = queue_list->next; node != queue_list; node = node->next) - { - entry = rt_list_entry(node, struct rt_wqueue_node, list); - if (entry->wakeup(entry, key) == 0) - { - rt_thread_resume(entry->polling_thread); - need_schedule = 1; - - rt_wqueue_remove(entry); - break; - } - } - } - rt_hw_interrupt_enable(level); - - if (need_schedule) - rt_schedule(); -} - -/** - * @brief This function will join a thread to the specified waiting queue, the thread will holds a wait or - * timeout return on the specified wait queue. - * - * @param queue is a pointer to the wait queue. - * - * @param condition is parameters compatible with POSIX standard interface (currently meaningless, just pass in 0). - * - * @param msec is the timeout value, unit is millisecond. - * - * @return Return 0 if the thread is woken up. - */ -int rt_wqueue_wait(rt_wqueue_t *queue, int condition, int msec) -{ - int tick; - rt_thread_t tid = rt_thread_self(); - rt_timer_t tmr = &(tid->thread_timer); - struct rt_wqueue_node __wait; - rt_base_t level; - - /* current context checking */ - RT_DEBUG_NOT_IN_INTERRUPT; - - tick = rt_tick_from_millisecond(msec); - - if ((condition) || (tick == 0)) - return 0; - - __wait.polling_thread = rt_thread_self(); - __wait.key = 0; - __wait.wakeup = __wqueue_default_wake; - rt_list_init(&__wait.list); - - level = rt_hw_interrupt_disable(); - if (queue->flag == RT_WQ_FLAG_WAKEUP) - { - /* already wakeup */ - goto __exit_wakeup; - } - - rt_wqueue_add(queue, &__wait); - rt_thread_suspend(tid); - - /* start timer */ - if (tick != RT_WAITING_FOREVER) - { - rt_timer_control(tmr, - RT_TIMER_CTRL_SET_TIME, - &tick); - - rt_timer_start(tmr); - } - rt_hw_interrupt_enable(level); - - rt_schedule(); - - level = rt_hw_interrupt_disable(); - -__exit_wakeup: - queue->flag = RT_WQ_FLAG_CLEAN; - rt_hw_interrupt_enable(level); - - rt_wqueue_remove(&__wait); - - return 0; -} |
