Suppose the signal$()$ statement can appear only as the last statement in a monitor function. Suggest how the implementation described in Section $6\mathrm{.}7$ can be simplified in this situation.

spinlock or a mutex lock where waiting processes sleep while waiting for the lock to become available:

The lock is to be held for a short duration.

The lock is to be held for a long duration.

$-$ A thread may be put to sleep while holding the lock.