Interface TimerScheduler

public interface TimerScheduler

Monotonic time and delayed execution. Methods must not block. Callbacks may run inline; they must be short and must not run application code. Cancellation is best effort, so an already dispatched callback may still run. The client does not own or close this scheduler. Runtime exceptions from time reads or scheduling fail the affected operation or connection and stop automatic reconnection; the client remains reusable through a later MqttClient.connect(). A failed read for the timing of a MetricsListener event only leaves that event unreported. Cancellation failures are logged and cleanup continues.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	TimerScheduler.Cancellable	A handle to a task scheduled with schedule(Duration, Runnable).

Method Summary

Modifier and Type	Method	Description
long	nanoTime()	Returns a monotonic nanosecond counter, compared using differences, like System.nanoTime().
TimerScheduler.Cancellable	schedule(Duration delay, Runnable task)	Runs a task once after a nonnegative delay.

Method Details

nanoTime

long nanoTime()

Returns a monotonic nanosecond counter, compared using differences, like System.nanoTime().

Returns:

a monotonic nanosecond counter, compared using differences, like System.nanoTime()

schedule

TimerScheduler.Cancellable schedule(Duration delay,
 Runnable task)

Runs a task once after a nonnegative delay.

Parameters:

delay - the delay before the task runs

task - the task to run

Returns:

a handle that cancels the task