타이머 기능 요약

2.1 Timer Service

The Timer Service provides a mechanism by which client processes get notified

when a timer expires. A timer is a logical object that is dynamically created and represents

either absolute time or a duration.

The Timer Service provides two types of timers: single event timers and periodic timers.

Single event timers will expire once and are deleted after notification. Periodic

timers will expire each time a specified duration is reached, and the process is notified

about the expirations. Periodic timers have to be explicitly deleted by invoking the

saTmrTimerCancel() function.