| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.jack.jayce; |
| |
| import com.android.jack.Jack; |
| import com.android.jack.JackIOException; |
| import com.android.jack.ir.ast.JMethod; |
| import com.android.jack.ir.ast.JNode; |
| import com.android.jack.load.AbstractMethodLoader; |
| import com.android.sched.util.config.Location; |
| import com.android.sched.util.log.stats.Counter; |
| import com.android.sched.util.log.stats.CounterImpl; |
| import com.android.sched.util.log.stats.StatisticId; |
| |
| import java.io.IOException; |
| import java.lang.ref.SoftReference; |
| |
| import javax.annotation.Nonnull; |
| |
| /** |
| * A loader for method loaded from a jack file. |
| */ |
| public class JayceMethodLoader extends AbstractMethodLoader { |
| @Nonnull |
| private static final StatisticId<Counter> BODY_LOAD_COUNT = new StatisticId<Counter>( |
| "jayce.body.load", "Body loaded from a NNode in a JNode", |
| CounterImpl.class, Counter.class); |
| |
| @Nonnull |
| private final JayceClassOrInterfaceLoader enclosingClassLoader; |
| |
| @Nonnull |
| private final SoftReference<MethodNode> nnode; |
| |
| private boolean isLoaded = false; |
| |
| public JayceMethodLoader(@Nonnull MethodNode nnode, |
| @Nonnull JayceClassOrInterfaceLoader enclosingClassLoader) { |
| this.enclosingClassLoader = enclosingClassLoader; |
| this.nnode = new SoftReference<MethodNode>(nnode); |
| } |
| |
| @Override |
| public void ensureBody(@Nonnull JMethod loaded) { |
| synchronized (this) { |
| if (isLoaded) { |
| return; |
| } |
| MethodNode methodNode = getNNode(loaded); |
| JNode body = methodNode.loadBody(loaded); |
| if (body != null) { |
| body.updateParents(loaded); |
| } |
| isLoaded = true; |
| enclosingClassLoader.tracer.getStatistic(BODY_LOAD_COUNT).incValue(); |
| } |
| } |
| |
| public void loadFully(@Nonnull JMethod loaded) { |
| ensureBody(loaded); |
| } |
| |
| @Nonnull |
| private MethodNode getNNode(@Nonnull JMethod loaded) { |
| MethodNode methodNode = nnode.get(); |
| if (methodNode == null || methodNode.getLevel() != NodeLevel.FULL) { |
| try { |
| DeclaredTypeNode declaredTypeNode = enclosingClassLoader.getNNode(NodeLevel.FULL); |
| methodNode = declaredTypeNode.getMethodNode(loaded); |
| } catch (IOException e) { |
| throw new JackIOException("Failed to load method '" + |
| Jack.getUserFriendlyFormatter().getName(loaded) + "'.", e); |
| } |
| } |
| return methodNode; |
| } |
| |
| @Override |
| @Nonnull |
| public Location getLocation(@Nonnull JMethod loaded) { |
| return enclosingClassLoader.getLocation(); |
| } |
| |
| @Override |
| protected void ensureAll(@Nonnull JMethod loaded) { |
| // nothing to do, only body is lazily loaded and ensureBody is handling that. |
| } |
| |
| } |