Quotes About Reentrant

The argument against recursive procedures was always an efficiency argument: non-re-entrant code could be executed so much more efficiently. But with the advent of multiprogramming another need for felxible storage allocation has emerged. And if there are still machines in which the use of recursive routines is punished by too heavy a penalty, then I would venture the opinion that the structure of such a machine should now be called somewhat old-fashioned.

the amygdala itself is a recipient of neuromodulatory inputs means that its processing is also boosted during arousal. As the amygdala drives arousal and arousal in turn drives the amygdala, a self-sustaining reentrant loop is engaged that helps keep the brain and body revved up as long as the threat remains.75

When a thread requests a lock that is already held by another thread, the requesting thread blocks. But because intrinsic locks are reentrant, if a thread tries to acquire a lock that it already holds, the request succeeds. Reentrancy means that locks are acquired on a per-thread rather than per-invocation basis.