过渡到准备状态,例如通过k_sem_give()或k_thread_start()。 处理完中断后返回到线程上下文 调用k_yield() 当线程主动发起将自身转换为暂停或等待状态的操作时,它就会进入睡眠状态。 每当调度器改变了当前线程的身份,或者当前线程的执行被ISR所取代时,内核会首先保存当前线程的CPU寄存器值。当线程后来恢复执行时,这...
应用程序也可以调用k_yield()函数主动让出CPU,定义在zephyr-zephyr-v1.13.0\kernel\sched.c: 1void_impl_k_yield(void)2{3__ASSERT(!_is_in_isr(),"");45if(!_is_idle(_current)) {6LOCKED(&sched_lock) {7_priq_run_remove(&_kernel.ready_q.runq, _current);8_priq_run_add(&_kernel.re...
Calling puts the thread at the back of the scheduler’s prioritized list of ready threads, and then invokes the scheduler. 调用k_yield() 可以把放到就绪线程列表的最后,然后执行调度器。所有更高优先级或者相等优先级的就绪线程将会先被执行。如果没有这样的就绪线程,那么调度器则会继续执行当前线程,无需...
如果想要一个线程变为挂起态,也就是暂停一个线程,那么可以使用k_thread_suspend()函数挂起线程,如果想恢复一个线程可以使用k_thread_resume(); 6 延时函数 6.1s32_tk_msleep(s32_tms) 是当前运行的线程休眠一段时间,单位是ms,调用这个函数后,当前线程放弃cpu变为waiting状态,休眠期间不可以被调度器调度,当休眠到...
意思是,当此线程为当前线程时(正在被 CPU 执行的线程),它不会被其他线程打断(注意这里是线程,而不是中断 IRQ),直到此线程主动将自己设置为“未准备好 (unready)”,交出执行权限。包括但不限于睡眠 (sleep),yield,互斥锁等待,线程退出,线程挂起 (suspend) 等。
线程放弃 CPU 的方法有两种:调用k_yield()将线程放到调度器维护的按照优先级排列的就绪线程链表中,然后调用调度器。在该线程被再次调度前,所有优先级高于或等于该线程的就绪线程都将得以执行。如果不存在优先级更高或相等的线程,调度器将不会进行上下文切换,立即再次调度该线程。调用k_sleep()让该线程在一段指定...
z_mrsh_k_timer_start z_mrsh_k_timer_status_get z_mrsh_k_timer_status_sync z_mrsh_k_timer_stop z_mrsh_k_timer_user_data_get z_mrsh_k_timer_user_data_set z_mrsh_k_uptime_ticks z_mrsh_k_usleep z_mrsh_k_wakeup z_mrsh_k_yield ...
This is a blocking driver as I found versions interacting with the PIO via interrupts to perform much worse than simply waiting via k_yield. The driver attempts to load the PIO code only once in order to allow multiple driver instances to run the same code. It also uses the reg property...
Some time ago we announced PVS-Studio′s new feature that enabled it to integrate into PlatformIO. Naturally, our team kept in touch with the PlatformIO team while working on that feature, and they...
A two-step enzyme treatment involving 0.5% each of Onozuka P1500 cellulase and Rhozyme HP150 hemicellulase followed by 0.5% each of Driselase and hemicellulase at pH 6.2 resulted in the production of viable protoplasts in 80–90% yield. The protoplasts were cultured in droplets of B5 medium ...