com.chemaxon.overlap.cli.prof

Class ProfSnapshot

java.lang.Object

com.chemaxon.overlap.cli.prof.ProfSnapshot

public final class ProfSnapshot
extends Object

VM profiling snapshot. Contains VM instrumentation data acquired through various MXBeans. Please note that additional fields may be added during JSON serialization. For example snapshots created by Prof contain statistics of running ProgressObserver instances.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ProfSnapshot.GarbageCollector Represents a garbage collector.
static class	ProfSnapshot.MemoryPool Represents a memory pool.
static class	ProfSnapshot.MemoryUsageDesc Represents memory usage.

Field Summary

Fields

Modifier and Type	Field and Description
List<ProfSnapshot.GarbageCollector>	garbageCollectors Representation of garbage collector states.
ProfSnapshot.MemoryUsageDesc	heapMemoryUsage Heap memory usage.
long	heapMemoryUsed Used heap memory.
boolean	important Important flag.
List<ProfSnapshot.MemoryPool>	memoryPools Representation of the states of the memory pools.
ProfSnapshot.MemoryUsageDesc	nonHeapMemoryUsage Non-heap memory usage.
long	nonHeapMemoryUsed Used non-heap memory.
int	objectPendingFinalizationCount Approximate number of objects pending finalization.
double	systemLoadAverage System load average.
long	timestamp System time snapshot.
long	totalCollectionCount Sum of collection counts.
long	totalCollectionTime Sum of collection times.
long	totalCompilationTime Total compilation time.

Constructor Summary

Constructors

Constructor and Description
ProfSnapshot() Construct snapshot.
ProfSnapshot(boolean important) Construct snapshot.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

timestamp

public long timestamp

System time snapshot.

See Also:

System.currentTimeMillis()

heapMemoryUsed

public long heapMemoryUsed

Used heap memory. Value returned by MemoryUsage.getUsed() of MemoryMXBean.getHeapMemoryUsage() of ManagementFactory.getMemoryMXBean().

heapMemoryUsage

public ProfSnapshot.MemoryUsageDesc heapMemoryUsage

Heap memory usage. Representation of MemoryMXBean.getHeapMemoryUsage() of ManagementFactory.getMemoryMXBean().

nonHeapMemoryUsed

public long nonHeapMemoryUsed

Used non-heap memory. Value returned by MemoryUsage.getUsed() of MemoryMXBean.getNonHeapMemoryUsage() of ManagementFactory.getMemoryMXBean().

nonHeapMemoryUsage

public ProfSnapshot.MemoryUsageDesc nonHeapMemoryUsage

Non-heap memory usage. Representation of MemoryMXBean.getNonHeapMemoryUsage() of ManagementFactory.getMemoryMXBean().

objectPendingFinalizationCount

public int objectPendingFinalizationCount

Approximate number of objects pending finalization. Value returned by MemoryMXBean.getObjectPendingFinalizationCount() of ManagementFactory.getMemoryMXBean().

garbageCollectors

public List<ProfSnapshot.GarbageCollector> garbageCollectors

Representation of garbage collector states. Populated from list returned by ManagementFactory.getGarbageCollectorMXBeans().

totalCollectionCount

public long totalCollectionCount

Sum of collection counts. Sum of values GarbageCollectorMXBean.getCollectionCount() of all garbage collectors (returned by ManagementFactory.getGarbageCollectorMXBeans()) which support this attribute.

totalCollectionTime

public long totalCollectionTime

Sum of collection times. Sum of values GarbageCollectorMXBean.getCollectionTime() of all garbage collectors (returned by ManagementFactory.getGarbageCollectorMXBeans()) which support this attribute.

totalCompilationTime

public long totalCompilationTime

Total compilation time. Value of CompilationMXBean.getTotalCompilationTime() when it is supported.

memoryPools

public List<ProfSnapshot.MemoryPool> memoryPools

Representation of the states of the memory pools. Populated from list returned by ManagementFactory.getMemoryPoolMXBeans().

systemLoadAverage

public double systemLoadAverage

System load average. Value of OperatingSystemMXBean.getSystemLoadAverage().

important

public boolean important

Important flag. Set by external snapshot trigger.

Constructor Detail

ProfSnapshot

public ProfSnapshot()

Construct snapshot. Important flag is false.

ProfSnapshot

public ProfSnapshot(boolean important)

Construct snapshot. Fields are filled.

Parameters:

important - Value of important flag