一般人不明白semaphore和mutex的区别,根本原因是不知道semaphore的用途。semaphore的用途,一句话:调度线程。 有的人用semaphore也可以把上面例子中的票“保护"起来以防止共享资源冲突,必须承认这是可行的,但是semaphore不是让你用来做这个的;如果你要做这件事,请用mutex。 在网上、包括stackoverflow等著名论坛上,有一个...
{return__down_common(sem, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); } 类似的还有 down_killable() 函数,它的C语言代码如下,请看: staticnoinlineint__sched __down_killable(structsemaphore *sem) {return__down_common(sem, TASK_KILLABLE, MAX_SCHEDULE_TIMEOUT); ...
What is the difference between JavaScript (JS) and TypeScript (TS), are two widely used programming languages that are popular for their feature-rich benefits. JavaScript was first introduced as a client-side language for developers. TypeScript was devel
The most important difference that distinguishes both sleep and wait method is, the sleep method holds the lock on the object till it is interrupted. On the other hand, the wait method releases the lock on the object to let the other objects execute till
Deadlock and Starvation both are the conditions where the processes requesting for a resource has been delayed for a long.