org.eclipse.jdt.internal.compiler.ClassFilePool Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2005, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler;
import java.util.Arrays;
import org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding;
public class ClassFilePool {
public static final int POOL_SIZE = 25; // need to have enough for 2 units
ClassFile[] classFiles;
private ClassFilePool() {
// prevent instantiation
this.classFiles = new ClassFile[POOL_SIZE];
}
public static ClassFilePool newInstance() {
return new ClassFilePool();
}
public synchronized ClassFile acquire(SourceTypeBinding typeBinding) {
for (int i = 0; i < POOL_SIZE; i++) {
ClassFile classFile = this.classFiles[i];
if (classFile == null) {
ClassFile newClassFile = new ClassFile(typeBinding);
this.classFiles[i] = newClassFile;
newClassFile.isShared = true;
return newClassFile;
}
if (!classFile.isShared) {
classFile.reset(typeBinding);
classFile.isShared = true;
return classFile;
}
}
return new ClassFile(typeBinding);
}
public synchronized void release(ClassFile classFile) {
classFile.isShared = false;
}
public void reset() {
Arrays.fill(this.classFiles, null);
}
}