scheduler_hook.c

/* * Copyright (c) 2006-2018, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2018-08-24 yangjie the first version *//** 程序清单：调度器钩子* 在调度器钩子中打印线程切换信息*/#include <rtthread.h>#define THREAD_STACK_SIZE 1024#define THREAD_PRIORITY 20#define THREAD_TIMESLICE 10/* 针对每个线程的计数器 */volatile rt_uint32_t count[2];/* 线程1、2共用一个入口，但入口参数不同 */static void thread_entry(void *parameter){ rt_uint32_t value; value = (rt_uint32_t)parameter; while (1) { rt_kprintf("thread %d is running\n", value); rt_thread_mdelay(1000); //延时一段时间 }}static rt_thread_t tid1 = RT_NULL;static rt_thread_t tid2 = RT_NULL;static void hook_of_scheduler(struct rt_thread *from, struct rt_thread *to){ rt_kprintf("from: %s --> to: %s \n", from->name, to->name);}int scheduler_hook(void){ /* 设置调度器钩子 */ rt_scheduler_sethook(hook_of_scheduler); /* 创建线程1 */ tid1 = rt_thread_create("thread1", thread_entry, (void *)1, THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE); if (tid1 != RT_NULL) rt_thread_startup(tid1); /* 创建线程2 */ tid2 = rt_thread_create("thread2", thread_entry, (void *)2, THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE - 5); if (tid2 != RT_NULL) rt_thread_startup(tid2); return 0;}/* 导出到 msh 命令列表中 */MSH_CMD_EXPORT(scheduler_hook, scheduler_hook sample);