org.opennms.core.fiber

Interface PausableFiber

All Superinterfaces:

Fiber

All Known Subinterfaces:

MockServiceDaemonMBean, NotifdQueueHandler, ServiceDaemon, ServiceDaemonMBean

All Known Implementing Classes:

AbstractServiceDaemon, Actiond, AsteriskGateway, Collectd, Correlator, DefaultQueueHandler, Dhcpd, Discovery, EnhancedLinkd, Eventd, EventTranslator, EventTranslator, JettyServer, LegacyScheduler, Linkd, MockServiceDaemon, Notifd, PassiveStatusd, PassiveStatusKeeper, Poller, Queued, RTCManager, Scheduler, Scriptd, SnmpPoller, Syslogd, Tl1d, Trapd, Vacuumd, Xmlrpcd

public interface PausableFiber
extends Fiber

This interface defines an extension to the core Fiberinterface and adds the methods for pausing and resuming an executable context. The base interface class defines an execution environment, this interface extends the core interface to provide methods for suspending and resuming the Fiber.

Author:

Brian Weaver

Field Summary

Fields

Modifier and Type	Field and Description
static int	PAUSE_PENDING This state is used to define when a Fiber has begun the process of pausing its operations.
static int	PAUSED This state is used to denote a paused, or otherwise suspended Fiber.
static int	RESUME_PENDING This state is used to denote a Fiber recovering from a paused state to a running status.

Fields inherited from interface org.opennms.core.fiber.Fiber

RUNNING, START_PENDING, STARTING, STATUS_NAMES, STOP_PENDING, STOPPED

Method Summary

Modifier and Type	Method and Description
void	pause() This method is used to suspend a currently running Fiber.
void	resume() This method is used to resume a suspeneded Fiber.

Methods inherited from interface org.opennms.core.fiber.Fiber

getName, getStatus, start, stop

Field Detail

PAUSE_PENDING

static final int PAUSE_PENDING

This state is used to define when a Fiber has begun the process of pausing its operations. This is the intermedate period where the thread is no longer in the RUNNING status, but not yet to a PAUSED status.

See Also:

Constant Field Values

PAUSED

static final int PAUSED

This state is used to denote a paused, or otherwise suspended Fiber. When a Fiber is in this state it should not be preforming any work.

See Also:

Constant Field Values

RESUME_PENDING

static final int RESUME_PENDING

This state is used to denote a Fiber recovering from a paused state to a running status. During this status the Fiber is reinitializing any necessary internal elements to re-enter the RUNNING state.

See Also:

Constant Field Values

Method Detail

pause

void pause()

This method is used to suspend a currently running Fiber. When invoked the Fiber will begin the transition to a PAUSED status after changing its internal state, if applicable.

resume

void resume()

This method is used to resume a suspeneded Fiber. If the thread is already running then this method should have no effect on the current Fiber.