The process of switching from one task to another in a multitasking operating system 在多任务操作系统中我一个任务切换到另一个的过程。
An essential part of any multitasking operating system , the kernel contains just the scheduler and context - switch routine 任何多任务操作系统的本质部分,内核仅仅包含调度程序和上下文切换进程。