| /******************************************************************************* |
| * Copyright (c) 2005, 2017 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 |
| * Technical University Berlin - extended API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.compiler; |
| |
| import java.util.Arrays; |
| |
| import org.eclipse.jdt.internal.compiler.impl.CompilerOptions; |
| import org.eclipse.jdt.internal.compiler.lookup.ModuleBinding; |
| 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, typeBinding.scope.compilerOptions()); |
| classFile.isShared = true; |
| return classFile; |
| } |
| } |
| return new ClassFile(typeBinding); |
| } |
| public synchronized ClassFile acquireForModule(ModuleBinding moduleBinding, CompilerOptions options) { |
| for (int i = 0; i < POOL_SIZE; i++) { |
| ClassFile classFile = this.classFiles[i]; |
| if (classFile == null) { |
| ClassFile newClassFile = new ClassFile(moduleBinding, options); |
| this.classFiles[i] = newClassFile; |
| newClassFile.isShared = true; |
| return newClassFile; |
| } |
| if (!classFile.isShared) { |
| classFile.reset(null, options); |
| classFile.isShared = true; |
| return classFile; |
| } |
| } |
| return new ClassFile(moduleBinding, options); |
| } |
| public synchronized void release(ClassFile classFile) { |
| classFile.isShared = false; |
| //{ObjectTeams: release from the generating role model, too: |
| classFile.releaseModel(); |
| // SH} |
| } |
| public void reset() { |
| Arrays.fill(this.classFiles, null); |
| } |
| } |