thread = rt_thread_self(); -- thread->remaining_tick; if(thread->remaining_tick == 0) { /* 重新赋初值 */ thread->remaining_tick = thread->init_tick; /* 线程挂起 */ thread->stat|= RT_THREAD_STAT_YIELD; /* yield */ rt_thread_yield(); } /* 检查定时器 */ rt_timer_check()...
thread = rt_thread_self(); -- thread->remaining_tick; if (thread->remaining_tick == 0) { /* 重新赋初值 */ thread->remaining_tick = thread->init_tick; /* 线程挂起 */ thread->stat |= RT_THREAD_STAT_YIELD; /* yield */ rt_thread_yield(); } /* 检查定时器 */ rt_timer_check...
thread = rt_thread_self(); -- thread->remaining_tick; if (thread->remaining_tick == 0) { /* change to initialized tick */ thread->remaining_tick = thread->init_tick; thread->stat |= RT_THREAD_STAT_YIELD; rt_hw_interrupt_enable(level); rt_schedule(); } else { rt_hw_interrupt_...
thread->stat|=RT_THREAD_STAT_YIELD; rt_hw_interrupt_enable(level); rt_schedule(); } else { rt_hw_interrupt_enable(level); } /* check timer */ rt_timer_check(); } 里面只做了两件事: 1、当前任务的时间片递减, 如果用完了,置位RT_THREAD_STAT_YIELD状态,调用rt_schedule, 2、检测是否有...
thread->stat|= RT_THREAD_STAT_YIELD; /* yield */ rt_thread_yield(); } /* 检查定时器 */ rt_timer_check(); } 从源代码中可以看出,每经过一个时钟节拍,全局变量rt_tick的值就会加 1。然后检查当前线程的时间片是否用完,以及是否有定时器超时。如果当前线程的时间片用完,则进行同优先级线程之间的切...
线程是 RT-Thread 操作系统中最小的调度单位，线程调度算法是基于优先级的全抢占式多线程调度算法，即在...
thread = rt_thread_self(); -- thread->remaining_tick; if (thread->remaining_tick == 0) { /* change to initialized tick */ thread->remaining_tick = thread->init_tick; thread->stat |= RT_THREAD_STAT_YIELD; rt_hw_interrupt_enable(level); ...
1、对RTOS/RT-Thread优先级反转的理解 参考链接 1:https://blog.csdn.net/m0_74712453/article/details/134001652 参考链接 2:https://blog.csdn.net/weixin_45590051/article/details/118330634 优先级反转是实时操作系统最常见的问题,解决办法是互斥量使用优先级继承方法。
thread->stat |= RT_THREAD_STAT_YIELD;/* yield */ rt_thread_yield();} /* check timer */ ...
rt_current_thread->stat &= ~RT_THREAD_STAT_YIELD_MASK;need_insert_from_thread = 1;.../* ...