blasd.apex.core.jvm

Interface IGCInspector

All Superinterfaces:

IApexMemoryConstants

All Known Implementing Classes:

GCInspector

public interface IGCInspector
extends IApexMemoryConstants

Interface for GC activity monitoring

Author:

Benoit Lacelle

Field Summary

Fields

Modifier and Type	Field and Description
static long	BARRIER_FOR_SIZE_IN_LOG We want to see at least 2 digits: after printing 9999B, we print 10KB

Fields inherited from interface blasd.apex.core.memory.IApexMemoryConstants

CHAR, DOUBLE, FLOAT, GB, GB_INT, INT, KB, KB_INT, LONG, MB, MB_INT, OBJECT, TB, TB_INT

Method Summary

Modifier and Type	Method and Description
void	clearAllocatedHeapReference()
String	getAllThreads(boolean withoutMonitors)
String	getAllThreadsSmart(boolean withoutMonitors)
String	getAndLogCurrentMemoryStatus()
String	getHeapHistogram()
long	getMarksweepDurationMillisForHeapHistogram()
long	getMarksweepDurationMillisForThreadDump()
long	getMaxHeapGbForHeapHistogram()
Map<String,String>	getThreadGroupsToAllocatedHeapNiceString()
Map<String,String>	getThreadNameToAllocatedHeapNiceString()
void	markNowAsAllocatedHeapReference()
String	saveHeapDump(Path path) Save a heap-dump in given map.
void	setMarksweepDurationMillisForHeapHistogram(long marksweepDurationMillisForHeapHistogram)
void	setMarksweepDurationMillisForThreadDump(long marksweepDurationMillisForThreadDump)
void	setMaxHeapGbForHeapHistogram(long maxHeapGbForHeapHistogram)

Field Detail

BARRIER_FOR_SIZE_IN_LOG

static final long BARRIER_FOR_SIZE_IN_LOG

We want to see at least 2 digits: after printing 9999B, we print 10KB

See Also:

Constant Field Values

Method Detail

getAndLogCurrentMemoryStatus

String getAndLogCurrentMemoryStatus()

getHeapHistogram

String getHeapHistogram()
                 throws IOException

Throws:

IOException

saveHeapDump

String saveHeapDump(Path path)
             throws IOException

Save a heap-dump in given map. It is comparable to jmap (http://docs.oracle.com/javase/7/docs/technotes/tools/share/jmap.html)

Parameters:

path -

Returns:

the output of the command

Throws:

IOException

getAllThreads

String getAllThreads(boolean withoutMonitors)

Parameters:

withoutMonitors - by default withoutMonitors=true in JConsole MBean for faster access to fasfter method

Returns:

a formatted thread-dump

getAllThreadsSmart

String getAllThreadsSmart(boolean withoutMonitors)

getThreadGroupsToAllocatedHeapNiceString

Map<String,String> getThreadGroupsToAllocatedHeapNiceString()

getThreadNameToAllocatedHeapNiceString

Map<String,String> getThreadNameToAllocatedHeapNiceString()

clearAllocatedHeapReference

void clearAllocatedHeapReference()

markNowAsAllocatedHeapReference

void markNowAsAllocatedHeapReference()

getMaxHeapGbForHeapHistogram

long getMaxHeapGbForHeapHistogram()

setMaxHeapGbForHeapHistogram

void setMaxHeapGbForHeapHistogram(long maxHeapGbForHeapHistogram)

getMarksweepDurationMillisForHeapHistogram

long getMarksweepDurationMillisForHeapHistogram()

setMarksweepDurationMillisForHeapHistogram

void setMarksweepDurationMillisForHeapHistogram(long marksweepDurationMillisForHeapHistogram)

getMarksweepDurationMillisForThreadDump

long getMarksweepDurationMillisForThreadDump()

setMarksweepDurationMillisForThreadDump

void setMarksweepDurationMillisForThreadDump(long marksweepDurationMillisForThreadDump)