Package org.kohsuke.file_leak_detector

Class Listener

java.lang.Object

org.kohsuke.file_leak_detector.Listener

public class Listener
extends Object

Intercepted JDK calls land here.

Author:

Kohsuke Kawaguchi

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Listener.FileRecord	Record of opened file.
static class	Listener.PathRecord
static class	Listener.Record	Remembers who/where/when opened a file.
static class	Listener.SelectorRecord
static class	Listener.ServerSocketRecord	Record of opened server socket.
static class	Listener.SinkChannelRecord
static class	Listener.SocketChannelRecord	Record of opened SocketChannel.
static class	Listener.SocketRecord	Record of opened socket.
static class	Listener.SourceChannelRecord

Field Summary

Fields

Modifier and Type	Field	Description
static PrintWriter	ERROR	Trace the "too many open files" error here
static List<String>	EXCLUDES	Allows to provide stacktrace-lines which cause the element to be excluded
static int	THRESHOLD	If the table size grows beyond this, report the table
static PrintWriter	TRACE	Trace the open/close op

Constructor Summary

Constructors

Constructor	Description
Listener()

Method Summary

Modifier and Type	Method	Description
static void	close(Object _this)	Called when a file is closed.
static void	dump(OutputStream out)	Dumps all files that are currently open.
static void	dump(Writer w)
static List<Listener.Record>	getCurrentOpenFiles()
static boolean	isAgentInstalled()	Returns true if the leak detector agent is running.
static void	makeStrong()
static void	open(Object _this, File f)	Called when a new file is opened.
static void	open(Object _this, Path p)	Called when a new path is opened.
static void	openDirectoryStream(DirectoryStream<?> directoryStream, Path path)
static void	openFileChannel(FileChannel fileChannel, Path path)
static void	openFileChannel(SeekableByteChannel byteChannel, Path path)
static void	openFileString(Object _this, FileDescriptor fileDescriptor, String path)
static void	openPipe(Object _this)	Called when a pipe is opened, e.g.
static void	openSelector(Object _this)
static void	openSocket(Object _this)	Called when a socket is opened.
static void	outOfDescriptors()	Called when the system has too many open files.

Methods inherited from class java.lang.Object

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

Field Detail

TRACE

public static PrintWriter TRACE

Trace the open/close op

ERROR

public static PrintWriter ERROR

Trace the "too many open files" error here

EXCLUDES

public static final List<String> EXCLUDES

Allows to provide stacktrace-lines which cause the element to be excluded

THRESHOLD

public static int THRESHOLD

If the table size grows beyond this, report the table

Constructor Detail

Listener

public Listener()

Method Detail

isAgentInstalled

public static boolean isAgentInstalled()

Returns true if the leak detector agent is running.

makeStrong

public static void makeStrong()

open

public static void open(Object _this,
                        File f)

Called when a new file is opened.

Parameters:

_this - FileInputStream, FileOutputStream, RandomAccessFile, or ZipFile.

f - File being opened.

open

public static void open(Object _this,
                        Path p)

Called when a new path is opened.

Parameters:

_this - FileInputStream, FileOutputStream, RandomAccessFile, or ZipFile.

p - Path being opened.

openFileString

public static void openFileString(Object _this,
                                  FileDescriptor fileDescriptor,
                                  String path)

openPipe

public static void openPipe(Object _this)

Called when a pipe is opened, e.g. via SelectorProvider

Parameters:

_this - SelectorProvider

openFileChannel

public static void openFileChannel(FileChannel fileChannel,
                                   Path path)

openFileChannel

public static void openFileChannel(SeekableByteChannel byteChannel,
                                   Path path)

openDirectoryStream

public static void openDirectoryStream(DirectoryStream<?> directoryStream,
                                       Path path)

openSelector

public static void openSelector(Object _this)

openSocket

public static void openSocket(Object _this)

Called when a socket is opened.

getCurrentOpenFiles

public static List<Listener.Record> getCurrentOpenFiles()

close

public static void close(Object _this)

Called when a file is closed. This method tolerates a double-close where a close method is called on an already closed object.

Parameters:

_this - FileInputStream, FileOutputStream, RandomAccessFile, Socket, ServerSocket, or ZipFile.

dump

public static void dump(OutputStream out)

Dumps all files that are currently open.

dump

public static void dump(Writer w)

outOfDescriptors

public static void outOfDescriptors()

Called when the system has too many open files.