Package io.deephaven.app

Class GcApplication

java.lang.Object

io.deephaven.app.GcApplication

All Implemented Interfaces:

io.deephaven.appmode.ApplicationState.Factory, java.util.EventListener, javax.management.NotificationListener

public final class GcApplication
extends java.lang.Object
implements io.deephaven.appmode.ApplicationState.Factory, javax.management.NotificationListener

The "Garbage-Collection Application", application id "io.deephaven.app.GcApplication", produces stream tables "notification_info" and "pools"; and derived tables "notification_info_stats", "notification_info_ring", and "pools_stats". This data is modeled after the GarbageCollectionNotificationInfo event information from ManagementFactory.getGarbageCollectorMXBeans().

See Also:

enabled(), notificationInfoEnabled(), poolsEnabled(), notificationInfoStatsEnabled(), notificationInfoRingSize(), poolStatsEnabled()

Constructor Summary

Constructors

Constructor	Description
GcApplication()

Method Summary

Modifier and Type	Method	Description
io.deephaven.appmode.ApplicationState	create(io.deephaven.appmode.ApplicationState.Listener listener)
static boolean	enabled()	Looks up the system property "io.deephaven.app.GcApplication.enabled", defaults to false.
void	handleNotification(javax.management.Notification notification, java.lang.Object handback)
static boolean	notificationInfoEnabled()	Looks up the system property "io.deephaven.app.GcApplication.notification_info.enabled", defaults to true.
static int	notificationInfoRingSize()	Looks up the system property "io.deephaven.app.GcApplication.notification_info_ring.enabled", defaults to 1024.
static boolean	notificationInfoStatsEnabled()	Looks up the system property "io.deephaven.app.GcApplication.notification_info_stats.enabled", defaults to true.
static boolean	poolsEnabled()	Looks up the system property "io.deephaven.app.GcApplication.pools.enabled", defaults to true.
static boolean	poolStatsEnabled()	Looks up the system property "io.deephaven.app.GcApplication.pools_stats.enabled", defaults to true.

Methods inherited from class java.lang.Object

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

Constructor Detail

GcApplication

public GcApplication()

Method Detail

enabled

public static boolean enabled()

Looks up the system property "io.deephaven.app.GcApplication.enabled", defaults to false.

Returns:

if the GC application is enabled

notificationInfoEnabled

public static boolean notificationInfoEnabled()

Looks up the system property "io.deephaven.app.GcApplication.notification_info.enabled", defaults to true.

Returns:

if "notification_info" table is enabled

notificationInfoStatsEnabled

public static boolean notificationInfoStatsEnabled()

Looks up the system property "io.deephaven.app.GcApplication.notification_info_stats.enabled", defaults to true.

Returns:

if "notification_info_stats" table is enabled

notificationInfoRingSize

public static int notificationInfoRingSize()

Looks up the system property "io.deephaven.app.GcApplication.notification_info_ring.enabled", defaults to 1024. The "notification_info_ring" table is disabled when 0 or less.

Returns:

the "notification_info_ring" table size

poolsEnabled

public static boolean poolsEnabled()

Looks up the system property "io.deephaven.app.GcApplication.pools.enabled", defaults to true.

Returns:

if "pools" table is enabled

poolStatsEnabled

public static boolean poolStatsEnabled()

Looks up the system property "io.deephaven.app.GcApplication.pools_stats.enabled", defaults to true.

Returns:

if "pools_stats" table is enabled

handleNotification

public void handleNotification(javax.management.Notification notification,
                               java.lang.Object handback)

Specified by:

handleNotification in interface javax.management.NotificationListener

create

public io.deephaven.appmode.ApplicationState create(io.deephaven.appmode.ApplicationState.Listener listener)

Specified by:

create in interface io.deephaven.appmode.ApplicationState.Factory