rt-thread/components/vbus/watermark_queue.c

72 lines
2.1 KiB
C

/*
* Water Gauge
*
* COPYRIGHT (C) 2014-2015, Shanghai Real-Thread Technology Co., Ltd
* http://www.rt-thread.com
*
* This file is part of RT-Thread (http://www.rt-thread.org)
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2014-04-16 Grissiom first version
*/
#include <rthw.h>
#include <rtthread.h>
#include "watermark_queue.h"
void rt_wm_que_set_mark(struct rt_watermark_queue *wg,
unsigned int low, unsigned int high)
{
RT_ASSERT(low <= high);
wg->high_mark = high;
wg->low_mark = low;
}
void rt_wm_que_init(struct rt_watermark_queue *wg,
unsigned int low, unsigned int high)
{
rt_wm_que_set_mark(wg, low, high);
rt_list_init(&wg->suspended_threads);
wg->level = 0;
}
void rt_wm_que_dump(struct rt_watermark_queue *wg)
{
struct rt_list_node *node;
rt_kprintf("wg %p: low: %d, high: %d, cur: %d\n",
wg, wg->low_mark, wg->high_mark, wg->level);
rt_kprintf("thread suspend:");
for (node = wg->suspended_threads.next;
node != &wg->suspended_threads;
node = node->next)
{
rt_thread_t thread;
thread = rt_list_entry(wg->suspended_threads.next,
struct rt_thread,
tlist);
rt_kprintf(" %.*s", RT_NAME_MAX, thread->name);
}
rt_kprintf("\n");
}