线程

创建、初始化/脱离线程

创建、初始化/脱离线程

源码

/* * 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：创建、初始化/脱离线程 * * 这个例子会创建两个线程，一个动态线程，一个静态线程。 * 静态线程在运行完毕后自动被系统脱离，动态线程一直打印计数。 */#include <rtthread.h>#define THREAD_PRIORITY 25#define THREAD_STACK_SIZE 512#define THREAD_TIMESLICE 5static rt_thread_t tid1 = RT_NULL;/* 线程1的入口函数 */static void thread1_entry(void *parameter){ rt_uint32_t count = 0; while (1) { /* 线程1采用低优先级运行，一直打印计数值 */ rt_kprintf("thread1 count: %d\n", count ++); rt_thread_mdelay(500); }}ALIGN(RT_ALIGN_SIZE)static char thread2_stack[1024];static struct rt_thread thread2;/* 线程2入口 */static void thread2_entry(void *param){ rt_uint32_t count = 0; /* 线程2拥有较高的优先级，以抢占线程1而获得执行 */ for (count = 0; count < 10 ; count++) { /* 线程2打印计数值 */ rt_kprintf("thread2 count: %d\n", count); } rt_kprintf("thread2 exit\n"); /* 线程2运行结束后也将自动被系统脱离 */}/* 线程示例 */int thread_sample(void){ /* 创建线程1，名称是thread1，入口是thread1_entry*/ tid1 = rt_thread_create("thread1", thread1_entry, RT_NULL, THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE); /* 如果获得线程控制块，启动这个线程 */ if (tid1 != RT_NULL) rt_thread_startup(tid1); /* 初始化线程2，名称是thread2，入口是thread2_entry */ rt_thread_init(&thread2, "thread2", thread2_entry, RT_NULL, &thread2_stack[0], sizeof(thread2_stack), THREAD_PRIORITY - 1, THREAD_TIMESLICE); rt_thread_startup(&thread2); return 0;}/* 导出到 msh 命令列表中 */MSH_CMD_EXPORT(thread_sample, thread sample);