blasd.apex.core.thread

Class ApexThreadDump

java.lang.Object

blasd.apex.core.thread.ApexThreadDump

All Implemented Interfaces:

IApexThreadDumper

@ManagedResource
public class ApexThreadDump
extends Object
implements IApexThreadDumper

A convenience class for getting a thread dump. See com.codahale.metrics.jvm.ThreadDump

Author:

Benoit Lacelle

Constructor Summary

Constructors

Constructor and Description
ApexThreadDump(ThreadMXBean threadMXBean)

Method Summary

Modifier and Type	Method and Description
protected void	appendThreadFooter(Appendable writer, ThreadInfo t)
protected void	appendThreadHeader(Appendable writer, ThreadInfo t)
protected void	appendThreadStack(Appendable writer, ThreadInfo t)
protected void	appendToWritable(Appendable writer, ThreadInfo t)
void	dump(Charset charset, OutputStream out, boolean withMonitorsAndSynchronizers) Dumps all of the threads' current information to an output stream.
protected ThreadInfo[]	dumpAllThreads(boolean withMonitors, boolean withSynchronizers)
protected void	dumpSkeleton(Charset charset, OutputStream out, boolean withMonitorsAndSynchronizers, BiConsumer<PrintWriter,Stream<ThreadInfo>> threadInfoConsumer)
void	dumpSmart(Charset charset, OutputStream out, boolean withMonitorsAndSynchronizers)
String	getSmartThreadDumpAsString(boolean withMonitorsAndSynchronizers)
String	getThreadDumpAsString(boolean withMonitorsAndSynchronizers)
protected boolean	hasFooter(ThreadInfo t) Used in smartThreadDump to prevent printing the example footer if it is empty
protected void	printf(Appendable writer, String format, Object... parameters)
protected void	printHeader(PrintWriter writer)
protected void	println(Appendable writer)
protected void	println(Appendable writer, String string)
protected void	printThreadGroup(PrintWriter writer, List<ThreadInfo> tis)

Methods inherited from class java.lang.Object

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

Constructor Detail

ApexThreadDump

public ApexThreadDump(ThreadMXBean threadMXBean)

Parameters:

threadMXBean - may be ManagementFactory.getThreadMXBean()

Method Detail

dump

public void dump(Charset charset,
                 OutputStream out,
                 boolean withMonitorsAndSynchronizers)
          throws IOException

Dumps all of the threads' current information to an output stream.

Parameters:

out - an output stream

Throws:

IOException

dumpAllThreads

protected ThreadInfo[] dumpAllThreads(boolean withMonitors,
                                      boolean withSynchronizers)

dumpSkeleton

protected void dumpSkeleton(Charset charset,
                            OutputStream out,
                            boolean withMonitorsAndSynchronizers,
                            BiConsumer<PrintWriter,Stream<ThreadInfo>> threadInfoConsumer)
                     throws IOException

Throws:

IOException

printHeader

protected void printHeader(PrintWriter writer)
                    throws IOException

Throws:

IOException

appendToWritable

protected void appendToWritable(Appendable writer,
                                ThreadInfo t)
                         throws IOException

Throws:

IOException

hasFooter

protected boolean hasFooter(ThreadInfo t)

Used in smartThreadDump to prevent printing the example footer if it is empty

Parameters:

t -

Returns:

true if the footer is not empty

appendThreadFooter

protected void appendThreadFooter(Appendable writer,
                                  ThreadInfo t)
                           throws UnsupportedEncodingException,
                                  IOException

Throws:

UnsupportedEncodingException

IOException

appendThreadStack

protected void appendThreadStack(Appendable writer,
                                 ThreadInfo t)
                          throws UnsupportedEncodingException,
                                 IOException

Throws:

UnsupportedEncodingException

IOException

appendThreadHeader

protected void appendThreadHeader(Appendable writer,
                                  ThreadInfo t)
                           throws UnsupportedEncodingException,
                                  IOException

Throws:

UnsupportedEncodingException

IOException

printf

protected void printf(Appendable writer,
                      String format,
                      Object... parameters)
               throws UnsupportedEncodingException,
                      IOException

Throws:

UnsupportedEncodingException

IOException

println

protected void println(Appendable writer)
                throws IOException

Throws:

IOException

println

protected void println(Appendable writer,
                       String string)
                throws IOException

Throws:

IOException

getThreadDumpAsString

@ManagedOperation
public String getThreadDumpAsString(boolean withMonitorsAndSynchronizers)

Specified by:

getThreadDumpAsString in interface IApexThreadDumper

getSmartThreadDumpAsString

@ManagedOperation
public String getSmartThreadDumpAsString(boolean withMonitorsAndSynchronizers)

Specified by:

getSmartThreadDumpAsString in interface IApexThreadDumper

dumpSmart

public void dumpSmart(Charset charset,
                      OutputStream out,
                      boolean withMonitorsAndSynchronizers)
               throws IOException

Throws:

IOException

printThreadGroup

protected void printThreadGroup(PrintWriter writer,
                                List<ThreadInfo> tis)
                         throws UnsupportedEncodingException,
                                IOException

Throws:

UnsupportedEncodingException

IOException