Package ghidra.formats.gfilesystem

Class FileSystemRefManager

java.lang.Object

ghidra.formats.gfilesystem.FileSystemRefManager

public class FileSystemRefManager
extends Object

A threadsafe helper class that manages creating and releasing FileSystemRef instances and broadcasting events to FileSystemEventListener listeners.

Constructor Summary

Constructors

Constructor	Description
FileSystemRefManager(GFileSystem fs)	Creates a new FileSystemRefManager pointing at the specified GFileSystem.

Method Summary

Modifier and Type	Method	Description
void	addListener(FileSystemEventListener listener)	Adds a listener that will be called when this filesystem is closed or when refs change.
boolean	canClose(FileSystemRef callersRef)	Returns true if the only FileSystemRef pinning this filesystem is the caller's ref.
FileSystemRef	create()	Creates a new FileSystemRef that points at the owning filesystem.
void	finalize()
long	getLastUsedTimestamp()
void	onClose()	Called from the Closeable.close() before any destructive changes have been made to gracefully shutdown the ref manager.
void	release(FileSystemRef ref)	Releases an existing FileSystemRef and broadcasts FileSystemEventListener.onFilesystemRefChange(GFileSystem, FileSystemRefManager) to listeners.
void	removeListener(FileSystemEventListener listener)	Removes a previously added listener.

Methods inherited from class java.lang.Object

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

Constructor Details

FileSystemRefManager

public FileSystemRefManager(GFileSystem fs)

Creates a new FileSystemRefManager pointing at the specified GFileSystem.

Parameters:

fs - GFileSystem to manage.

Method Details

addListener

public void addListener(FileSystemEventListener listener)

Adds a listener that will be called when this filesystem is closed or when refs change.

Parameters:

listener - FileSystemEventListener to receive callbacks, weakly refd and automagically removed if a reference isn't held to the listener somewhere else.

removeListener

public void removeListener(FileSystemEventListener listener)

Removes a previously added listener.

Parameters:

listener - FileSystemEventListener to remove.

create

public FileSystemRef create()

Creates a new FileSystemRef that points at the owning filesystem.

Returns:

new FileSystemRef pointing at the filesystem, never null.

release

public void release(FileSystemRef ref)

Releases an existing FileSystemRef and broadcasts FileSystemEventListener.onFilesystemRefChange(GFileSystem, FileSystemRefManager) to listeners.

Parameters:

ref - the FileSystemRef to release.

canClose

public boolean canClose(FileSystemRef callersRef)

Returns true if the only FileSystemRef pinning this filesystem is the caller's ref.

Parameters:

callersRef - FileSystemRef to test

Returns:

boolean true if the tested FileSystemRef is the only ref pinning the filesystem.

onClose

public void onClose()

Called from the Closeable.close() before any destructive changes have been made to gracefully shutdown the ref manager.

Broadcasts FileSystemEventListener.onFilesystemClose(GFileSystem).

finalize

public void finalize()

Overrides:

finalize in class Object

getLastUsedTimestamp

public long getLastUsedTimestamp()