org.adoptopenjdk.jitwatch.model.MetaClass Maven / Gradle / Ivy

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A Maven plugin that scans the project artifact and its dependencies for methods that cannot be inlined by the JIT compiler. It uses the JarScan utility from the JITWatch project to do that. See https://github.com/AdoptOpenJDK/jitwatch .
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/*
 * Copyright (c) 2013-2015 Chris Newland.
 * Licensed under https://github.com/AdoptOpenJDK/jitwatch/blob/master/LICENSE-BSD
 * Instructions: https://github.com/AdoptOpenJDK/jitwatch/wiki
 */
package org.adoptopenjdk.jitwatch.model;

import static org.adoptopenjdk.jitwatch.core.JITWatchConstants.C_DOT;
import static org.adoptopenjdk.jitwatch.core.JITWatchConstants.C_SPACE;
import static org.adoptopenjdk.jitwatch.core.JITWatchConstants.DEBUG_LOGGING_BYTECODE;
import static org.adoptopenjdk.jitwatch.core.JITWatchConstants.DEBUG_LOGGING_SIG_MATCH;
import static org.adoptopenjdk.jitwatch.core.JITWatchConstants.S_DOT;
import static org.adoptopenjdk.jitwatch.core.JITWatchConstants.S_SLASH;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;
import org.adoptopenjdk.jitwatch.loader.BytecodeLoader;
import org.adoptopenjdk.jitwatch.model.bytecode.ClassBC;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MetaClass implements Comparable
{
	// private static final Logger logger =
	// LoggerFactory.getLogger(MetaClass.class);

	private String className;
	private MetaPackage classPackage;

	private boolean isInterface = false;
	private boolean missingDef = false;

	private List classMethods = new CopyOnWriteArrayList();
	private List classConstructors = new CopyOnWriteArrayList();

	private int compiledMethodCount = 0;

	private ClassBC classBytecode = null;

	private static final Logger logger = LoggerFactory.getLogger(MetaClass.class);

	public MetaClass(MetaPackage classPackage, String className)
	{
		this.classPackage = classPackage;
		this.className = className;
	}

	public IMetaMember getFirstConstructor()
	{
		IMetaMember result = null;

		for (IMetaMember member : getMetaMembers())
		{
			if (member instanceof MetaConstructor)
			{
				result = member;
				break;
			}
		}

		return result;
	}

	public boolean isInterface()
	{
		return isInterface;
	}

	public void incCompiledMethodCount()
	{
		compiledMethodCount++;
	}

	public boolean hasCompiledMethods()
	{
		return compiledMethodCount > 0;
	}

	public void setInterface(boolean isInterface)
	{
		this.isInterface = isInterface;
	}

	public boolean isMissingDef()
	{
		return missingDef;
	}

	public void setMissingDef(boolean missingDef)
	{
		this.missingDef = missingDef;
	}

	public ClassBC getClassBytecode(IReadOnlyJITDataModel model, List classLocations)
	{
		if (DEBUG_LOGGING_BYTECODE)
		{
			logger.debug("getClassBytecode for {} existing? {}", getName(), classBytecode != null);
		}

		if (classBytecode == null)
		{
			classBytecode = BytecodeLoader.fetchBytecodeForClass(classLocations, getFullyQualifiedName(), true);

			if (classBytecode != null)
			{
				loadInnerClasses(classBytecode.getInnerClassNames(), model, classLocations);
			}
		}

		return classBytecode;
	}
	
	public ClassBC getClassBytecode()
	{
		return classBytecode;
	}

	private void loadInnerClasses(List innerClassNames, IReadOnlyJITDataModel model, List classLocations)
	{
		if (DEBUG_LOGGING_BYTECODE)
		{
			logger.info("innerClasses to load {}", innerClassNames.size());
		}

		for (String innerClassName : innerClassNames)
		{
			if (DEBUG_LOGGING_BYTECODE)
			{
				logger.info("innerClass {}", innerClassName);
			}

			MetaClass metaClassForInner = model.getPackageManager().getMetaClass(innerClassName);

			if (metaClassForInner != null)
			{
				metaClassForInner.getClassBytecode(model, classLocations);
			}
			else
			{
				logger.warn("No MetaClass found for inner Class {}", innerClassName);
			}
		}
	}

	public String toStringDetailed()
	{
		StringBuilder builder = new StringBuilder();
		builder.append(classPackage.getName()).append(S_DOT).append(className).append(C_SPACE).append(compiledMethodCount)
				.append(S_SLASH).append(classMethods.size());

		return builder.toString();
	}

	@Override
	public String toString()
	{
		return getName();
	}

	public String getName()
	{
		return className;
	}

	public String getFullyQualifiedName()
	{
		StringBuilder builder = new StringBuilder();

		if (classPackage != null && classPackage.getName().length() > 0)
		{
			builder.append(classPackage.getName()).append(C_DOT);
		}

		builder.append(className);

		return builder.toString();
	}

	public String getAbbreviatedFullyQualifiedName()
	{
		StringBuilder builder = new StringBuilder();

		if (classPackage != null && classPackage.getName().length() > 0)
		{
			String[] parts = classPackage.getName().split("\\.");

			for (String part : parts)
			{
				builder.append(part.charAt(0)).append(C_DOT);
			}
		}

		builder.append(className);

		return builder.toString();
	}

	public MetaPackage getPackage()
	{
		return classPackage;
	}

	public void addMetaMethod(MetaMethod method)
	{
		classMethods.add(method);
	}

	public void addMetaConstructor(MetaConstructor constructor)
	{
		classConstructors.add(constructor);
	}

	public List getMetaMembers()
	{
		List result = new ArrayList<>();

		IMetaMember[] constructorsArray = classConstructors.toArray(new MetaConstructor[classConstructors.size()]);
		Arrays.sort(constructorsArray);

		IMetaMember[] methodsArray = classMethods.toArray(new MetaMethod[classMethods.size()]);
		Arrays.sort(methodsArray);

		result.addAll(Arrays.asList(constructorsArray));
		result.addAll(Arrays.asList(methodsArray));

		return result;
	}

	public IMetaMember getMemberForSignature(MemberSignatureParts msp)
	{
		IMetaMember result = null;

		if (DEBUG_LOGGING_SIG_MATCH)
		{
			logger.debug("Comparing: {} members of {}", getMetaMembers().size(), this);
		}

		for (IMetaMember member : getMetaMembers())
		{
			if (member.matchesSignature(msp, true))
			{
				result = member;
				break;
			}
		}

		return result;
	}

	public List getTreePath()
	{
		MetaPackage metaPackage = getPackage();

		List path = metaPackage.getPackageComponents();
		path.add(getName());

		return path;
	}

	@Override
	public int compareTo(MetaClass other)
	{
		return this.getName().compareTo(other.getName());
	}

	@Override
	public int hashCode()
	{
		return toString().hashCode();
	}

	@Override
	public boolean equals(Object obj)
	{
		if (obj == null)
		{
			return false;
		}
		else
		{
			return toString().equals(obj.toString());
		}
	}
}