IOUtils

java.lang.Object

org.sejda.io.util.IOUtils

public final class IOUtils extends Object

Utility class with I/O related static methods

Field Summary

Fields

Modifier and Type

Field

Description

private static final org.slf4j.Logger

LOG

private static final Optional<Consumer<ByteBuffer>>

UNMAPPER
Constructor Summary

Constructors

Modifier

Constructor

Description

private

IOUtils()
Method Summary

Modifier and Type

Method

Description

private static Consumer<ByteBuffer>

newBufferCleaner(Class<?> unmappableBufferClass, MethodHandle unmapper)

static void

unmap(ByteBuffer buf)

Unmap memory mapped byte buffers.

private static Consumer<ByteBuffer>

unmapper()

This is adapted from org.apache.lucene.store.MMapDirectory

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- LOG
  
  private static final org.slf4j.Logger LOG
- UNMAPPER
  
  private static final Optional<Consumer<ByteBuffer>> UNMAPPER
Constructor Details
- IOUtils
  
  private IOUtils()
Method Details
- unmap
  
  public static void unmap(ByteBuffer buf)
  
  Unmap memory mapped byte buffers. This is a hack waiting for a proper JVM provided solution expected in java 10 https://bugs.openjdk.java.net/browse/JDK-4724038 The issue here is that even when closed, memory mapped byte buffers hold a lock on the underlying file until GC is executed and this in turns result in an error if the user tries to move or delete the file.
  
  Parameters:
  
  buf -
- unmapper
  
  private static Consumer<ByteBuffer> unmapper()
  
  This is adapted from org.apache.lucene.store.MMapDirectory
  
  Returns:
- newBufferCleaner
  
  private static Consumer<ByteBuffer> newBufferCleaner(Class<?> unmappableBufferClass, MethodHandle unmapper)