在进入一个编织的手里时,我们首先“可拆解的断断线”(使用像关于x86的电线指示这样的东西)。 在断断断断电时,假设用户在纸板上发出一封通常会造成中断的信号。 但是,由于中断残疾,这意味着:
- the interrupt handler for a would never be invoked, since interrupts are disabled in the critical section or
- the interrupt will be handled by the os but delayed, until interrupts are enabled again. Specifically, will the user need to press a again, if the first time he pressed a was at a time when interrupts were disabled ?