org.apache.jackrabbit.oak.spi.gc

Interface GCMonitor

All Known Implementing Classes:

DelegatingGCMonitor, GCMonitor.Empty, GCMonitorTracker, LoggingGCMonitor

public interface GCMonitor

GCMonitor instance are used to monitor garbage collection. Instances of GCMonitor are registered to the Whiteboard to receive notifications regarding garbage collection.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	GCMonitor.Empty

Field Summary

Fields

Modifier and Type	Field and Description
static GCMonitor	EMPTY

Method Summary

Modifier and Type	Method and Description
void	cleaned(long reclaimedSize, long currentSize) The cleanup phase of the garbage collection process terminated successfully.
void	compacted() The compaction phase of the garbage collection process terminated successfully.
void	error(java.lang.String message, java.lang.Exception exception) An error caused the garbage collection process to terminate prematurely.
void	info(java.lang.String message, java.lang.Object... arguments) Informal notification on the progress of garbage collection.
void	skipped(java.lang.String reason, java.lang.Object... arguments) A garbage collection cycle is skipped for a specific reason.
void	updateStatus(java.lang.String status) The garbage collection entered a new phase e.g.
void	warn(java.lang.String message, java.lang.Object... arguments) Warning about a condition that might have adverse effects on the overall garbage collection process but does not prevent the process from running.

Field Detail

EMPTY

static final GCMonitor EMPTY

Method Detail

info

void info(java.lang.String message,
          java.lang.Object... arguments)

Informal notification on the progress of garbage collection.

Parameters:

message - The message with {} place holders for the arguments

arguments -

warn

void warn(java.lang.String message,
          java.lang.Object... arguments)

Warning about a condition that might have adverse effects on the overall garbage collection process but does not prevent the process from running.

Parameters:

message - The message with {} place holders for the arguments

arguments -

error

void error(java.lang.String message,
           java.lang.Exception exception)

An error caused the garbage collection process to terminate prematurely.

Parameters:

message -

exception -

skipped

void skipped(java.lang.String reason,
             java.lang.Object... arguments)

A garbage collection cycle is skipped for a specific reason.

Parameters:

reason - The reason with {} place holders for the arguments

arguments -

compacted

void compacted()

The compaction phase of the garbage collection process terminated successfully.

cleaned

void cleaned(long reclaimedSize,
             long currentSize)

The cleanup phase of the garbage collection process terminated successfully.

Parameters:

reclaimedSize - number of bytes reclaimed

currentSize - number of bytes after garbage collection

updateStatus

void updateStatus(java.lang.String status)

The garbage collection entered a new phase e.g. idle, estimation, etc.

Parameters:

status - short summary of the GC phase