| 术语 | context switching |
| 释义 | context switching 上下文转接(法);［脉络转换］ A procedure that interrupts the activity in progress and switches to another activity. Context switching occurs as one process after another is scheduled for execution. The operating system saves the hardware context of the interrupted process in its PCB using the Save Process Context instruction, loads the PCB of another process into the hardware context using the Load Process Context instruction scheduling that process for execution. 在一进程中,中断某种活动而转到另一种活动中去的过程。上下文转接发生在某一过程之后 需要调度执行另一过程时,此时操作系统将所中断的过程的硬件上下文用保存进程上下文指 令存到硬件过程控制块(PCB)内,并将另一进程的硬件 过程控制块(PCB)用装入进程上下文指令装入到硬件上下文中去,以便执行。 |
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