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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.tracer;
import com.android.jack.analysis.tracer.TracerBrush;
import com.android.jack.ir.ast.HasName;
import com.android.jack.ir.ast.JDefinedClassOrInterface;
import com.android.jack.ir.ast.JField;
import com.android.jack.ir.ast.JMethod;
import com.android.jack.ir.ast.JNode;
import javax.annotation.Nonnull;
public class MultiTracerBrush implements TracerBrush {
private static final long DISTINCT_FORCED_MARKED_KEY = 17;
private static final long COMMON_FORCED_MARKED_KEY = 13;
private static final long DISTINCT_SEED_KEY = 11;
private static final long COMMON_SEED_KEY = 5;
private final boolean traceEnclosingMethod;
private final boolean traceExternal = true;
private final int id;
private final int seed;
public MultiTracerBrush(int id, int seed, boolean traceEnclosingMethod) {
this.id = id;
this.seed = seed;
this.traceEnclosingMethod = traceEnclosingMethod;
}
@Override
public boolean startTrace(@Nonnull JDefinedClassOrInterface type) {
if (type.isExternal()) {
return false;
}
return markIfNecessary(type);
}
@Override
public void endTrace(@Nonnull JDefinedClassOrInterface type) {
}
@Override
public boolean startTrace(@Nonnull JMethod method) {
if (method.isExternal()) {
return false;
}
return markIfNecessary(method);
}
@Override
public void endTrace(@Nonnull JMethod method) {
}
@Override
public boolean startTrace(@Nonnull JField field) {
if (field.isExternal()) {
return false;
}
return markIfNecessary(field);
}
@Override
public void endTrace(@Nonnull JField field) {
}
@Override
public boolean startTraceSeed(@Nonnull JDefinedClassOrInterface type) {
return isSeed(type);
}
@Override
public void endTraceSeed(@Nonnull JDefinedClassOrInterface type) {
}
@Override
public boolean startTraceSeed(@Nonnull JMethod method) {
return isSeed(method);
}
@Override
public void endTraceSeed(@Nonnull JMethod method) {
}
@Override
public boolean startTraceSeed(@Nonnull JField field) {
return isSeed(field);
}
@Override
public void endTraceSeed(@Nonnull JField field) {
}
@Override
public boolean startTraceOverridingMethod(@Nonnull JMethod method) {
return traceMarked(method) && mustTraceOverridingMethod(method);
}
@Override
public void endTraceOverridingMethod(@Nonnull JMethod method) {
}
@Override
public boolean traceMarked(@Nonnull JNode node) {
if (node instanceof JDefinedClassOrInterface
&& ((JDefinedClassOrInterface) node).isExternal()) {
return traceExternal;
} else if (node instanceof JMethod
&& ((JMethod) node).getEnclosingType().isExternal()) {
return traceExternal;
} else if (node instanceof JField
&& ((JField) node).getEnclosingType().isExternal()) {
return traceExternal;
}
return isMarked(node);
}
@Override
public void endTraceMarked(@Nonnull JNode node) {
}
protected boolean markIfNecessary(@Nonnull JNode node) {
if (isForcedMark((HasName) node)) {
return false;
}
synchronized (node) {
MultiTracerMarker marker = node.getMarker(MultiTracerMarker.class);
if (marker == null) {
marker = new MultiTracerMarker();
node.addMarker(marker);
}
if (!marker.isSet(id)) {
marker.set(id);
return true;
}
}
return false;
}
protected boolean isMarked(@Nonnull JNode node) {
if (isForcedMark((HasName) node)) {
return true;
}
synchronized (node) {
MultiTracerMarker marker = node.getMarker(MultiTracerMarker.class);
if (marker != null) {
return marker.isSet(id);
}
}
return false;
}
protected boolean isSeed(@Nonnull HasName node) {
return (node.getName().hashCode() + seed) != 0
&& ((((node.getName().hashCode() + seed) % DISTINCT_SEED_KEY) == 0L)
|| (((node.getName().hashCode()) % COMMON_SEED_KEY) == 0L));
}
protected boolean isForcedMark(@Nonnull HasName node) {
return (node.getName().hashCode() + seed) != 0
&& ((((node.getName().hashCode() + seed) % DISTINCT_FORCED_MARKED_KEY) == 0L)
|| (((node.getName().hashCode()) % COMMON_FORCED_MARKED_KEY) == 0L));
}
protected boolean mustTraceOverridingMethod(@Nonnull JMethod method) {
synchronized (method) {
MultiTracerMarker marker = method.getMarker(MultiTracerMarker.class);
if (marker != null) {
return marker.mustTraceOverridingMethods(id);
}
}
return false;
}
@Override
public void setMustTraceOverridingMethods(@Nonnull JMethod method) {
if (!isForcedMark(method)) {
synchronized (method) {
MultiTracerMarker marker = method.getMarker(MultiTracerMarker.class);
assert marker != null && marker.isSet(id);
marker.setMustTraceOverridingMethods(id, true);
}
}
}
@Override
public boolean startTraceEnclosingMethod() {
return traceEnclosingMethod;
}
@Override
public void endTraceEnclosingMethod() {
}
}
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