Plexus/Plex-FAWE
1
0
Fork 0
mirror of https://github.com/plexusorg/Plex-FAWE.git synced 2024-07-01 06:31:45 +00:00
Code Issues Packages Projects Releases Wiki Activity

Always use Unsafe to clean ByteBuffer

Browse Source
This commit is contained in:
SirYwell 2021-05-15 15:27:28 +02:00
parent 706ac35063
commit 71f7103edd
1 changed files with 2 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/DiskOptimizedClipboard.java
View File

@ -22,6 +22,7 @@ import com.sk89q.worldedit.world.block.BaseBlock;
import com.sk89q.worldedit.world.block.BlockState;
import com.sk89q.worldedit.world.block.BlockStateHolder;
import com.sk89q.worldedit.world.block.BlockTypes;
import net.jpountz.util.UnsafeUtils;
import org.apache.logging.log4j.Logger;
import javax.annotation.Nullable;
@ -31,8 +32,6 @@ import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.net.URI;
import java.nio.ByteBuffer;
import java.nio.MappedByteBuffer;
@ -280,27 +279,7 @@ public class DiskOptimizedClipboard extends LinearClipboard implements Closeable
if (cb == null || !cb.isDirect()) {
return;
}
// we could use this type cast and call functions without reflection code,
// but static import from sun.* package is risky for non-SUN virtual machine.
//try { ((sun.nio.ch.DirectBuffer)cb).cleaner().clean(); } catch (Exception ex) { }
try {
Method cleaner = cb.getClass().getMethod("cleaner");
cleaner.setAccessible(true);
Method clean = Class.forName("sun.misc.Cleaner").getMethod("clean");
clean.setAccessible(true);
clean.invoke(cleaner.invoke(cb));
} catch (Exception ex) {
try {
final Class<?> unsafeClass = Class.forName("sun.misc.Unsafe");
final Field theUnsafeField = unsafeClass.getDeclaredField("theUnsafe");
theUnsafeField.setAccessible(true);
final Object theUnsafe = theUnsafeField.get(null);
final Method invokeCleanerMethod = unsafeClass.getMethod("invokeCleaner", ByteBuffer.class);
invokeCleanerMethod.invoke(theUnsafe, cb);
} catch (Exception e) {
System.gc();
}
}
UnsafeUtils.getUNSAFE().invokeCleaner(cb);
}
@Override