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/*
* 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.JackFileException;
import com.android.jack.ir.ast.JMethod;
import com.android.jack.ir.ast.JNode;
import com.android.jack.library.HasInputLibrary;
import com.android.jack.library.InputLibrary;
import com.android.jack.load.AbstractMethodLoader;
import com.android.jack.load.JackLoadingException;
import com.android.jack.lookup.JLookupException;
import com.android.sched.util.location.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 implements HasInputLibrary {
@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;
try {
methodNode = getNNode(loaded);
} catch (JackFileException e) {
throw new JackLoadingException(getLocation(loaded), e);
} catch (IOException e) {
throw new JackLoadingException(getLocation(loaded), e);
}
JNode body;
try {
body = methodNode.loadBody(loaded);
} catch (JLookupException e) {
throw new JackLoadingException(getLocation(loaded), e);
}
if (body != null) {
body.updateParents(loaded);
}
isLoaded = true;
enclosingClassLoader.tracer.getStatistic(BODY_LOAD_COUNT).incValue();
}
loaded.removeLoader();
enclosingClassLoader.notifyMethodLoaded(loaded.getEnclosingType());
}
public void loadFully(@Nonnull JMethod loaded) {
ensureBody(loaded);
}
@Nonnull
private MethodNode getNNode(@Nonnull JMethod loaded) throws JayceFormatException,
JayceVersionException, IOException {
MethodNode methodNode = nnode.get();
if (methodNode == null || methodNode.getLevel() != NodeLevel.FULL) {
DeclaredTypeNode declaredTypeNode = enclosingClassLoader.getNNode(NodeLevel.FULL,
loaded.getEnclosingType().getSession().getUserLogger());
methodNode = declaredTypeNode.getMethodNode(loaded);
}
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.
}
@Override
@Nonnull
public InputLibrary getInputLibrary() {
return enclosingClassLoader.getInputLibrary();
}
}
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