org.opennms.protocols.snmp
Class SnmpTimer

java.lang.Object
  org.opennms.protocols.snmp.SnmpTimer

class SnmpTimer

extends java.lang.Object

Provides a simple timer scheduler for use by the internal SnmpSession class. Resolution is provided at the millisecond level.

Version:

1.1.1.1

Author:

Brian Weaver

See Also:

SnmpSession

Nested Class Summary

private class	SnmpTimer.Scheduler This object is the thread of execution that monitors and executes the scheduled runnables.
private class	SnmpTimer.TimeoutElement Used to track the individual runnables and when the runnable "expires".

Field Summary

private boolean	m_exit when true the internal thread should exit
private java.util.LinkedList	m_list The list of runnable objects (stored as TimeoutElement)
private java.lang.Object	m_sync The synchronization object
private java.lang.Thread	m_thread The thread doing the scheduling

Constructor Summary

(package private)

SnmpTimer() Creates an SnmpTime object and it's internal thread that is used to schedual the execution of the runnables.

Method Summary

(package private) void	cancel() Cancels the current timer object and terminates the internal thread
(package private) void	schedule(java.lang.Runnable runner, long milliseconds) Schedules the runnable to be run after AT LEAST ms milliseconds of time has expired.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

m_list

private java.util.LinkedList m_list

The list of runnable objects (stored as TimeoutElement)

m_thread

private java.lang.Thread m_thread

The thread doing the scheduling

m_exit

private boolean m_exit

when true the internal thread should exit

m_sync

private java.lang.Object m_sync

The synchronization object

Constructor Detail

SnmpTimer

SnmpTimer()

Creates an SnmpTime object and it's internal thread that is used to schedual the execution of the runnables.

Method Detail

schedule

void schedule(java.lang.Runnable runner,
              long milliseconds)

Schedules the runnable to be run after AT LEAST ms milliseconds of time has expired. The runnable may be invoked in a delayed manner, but will not be run BEFORE ms milliseconds have expired.

Parameters:

runner - The runnable object

milliseconds - The number of milliseconds to wait

cancel

void cancel()

Cancels the current timer object and terminates the internal thread