/**************************************************************************************
* Copyright (c) Jonas Bon�r, Alexandre Vasseur. All rights reserved. *
* http://aspectwerkz.codehaus.org *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the LGPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package org.codehaus.aspectwerkz.joinpoint.management;
import org.codehaus.aspectwerkz.AspectSystem;
import org.codehaus.aspectwerkz.ConstructorTuple;
import org.codehaus.aspectwerkz.IndexTuple;
import org.codehaus.aspectwerkz.MethodTuple;
import org.codehaus.aspectwerkz.SystemLoader;
import org.codehaus.aspectwerkz.aspect.management.AspectRegistry;
import org.codehaus.aspectwerkz.aspect.management.Pointcut;
import org.codehaus.aspectwerkz.expression.PointcutType;
import org.codehaus.aspectwerkz.joinpoint.CatchClauseRtti;
import org.codehaus.aspectwerkz.joinpoint.CodeRtti;
import org.codehaus.aspectwerkz.joinpoint.FieldRtti;
import org.codehaus.aspectwerkz.joinpoint.JoinPoint;
import org.codehaus.aspectwerkz.joinpoint.Rtti;
import org.codehaus.aspectwerkz.joinpoint.impl.CatchClauseRttiImpl;
import org.codehaus.aspectwerkz.joinpoint.impl.CatchClauseSignatureImpl;
import org.codehaus.aspectwerkz.joinpoint.impl.ConstructorRttiImpl;
import org.codehaus.aspectwerkz.joinpoint.impl.ConstructorSignatureImpl;
import org.codehaus.aspectwerkz.joinpoint.impl.FieldRttiImpl;
import org.codehaus.aspectwerkz.joinpoint.impl.FieldSignatureImpl;
import org.codehaus.aspectwerkz.joinpoint.impl.MethodRttiImpl;
import org.codehaus.aspectwerkz.joinpoint.impl.MethodSignatureImpl;
import org.codehaus.aspectwerkz.reflect.ClassInfo;
import org.codehaus.aspectwerkz.reflect.MemberInfo;
import org.codehaus.aspectwerkz.reflect.impl.java.JavaClassInfo;
import org.codehaus.aspectwerkz.reflect.impl.java.JavaClassInfoRepository;
import org.codehaus.aspectwerkz.transform.TransformationUtil;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
//import EDU.oswego.cs.dl.util.concurrent.ReadWriteLock;
//import EDU.oswego.cs.dl.util.concurrent.ReaderPreferenceReadWriteLock;
/**
* Manages the join points, invokes the correct advice chains, handles redeployment, JIT compilation etc. Each advised
* class' instance holds one instance of this class.
*
* @author <a href="mailto:jboner@codehaus.org">Jonas Bon�r</a>
* @author <a href="mailto:alex@gnilux.com">Alexandre Vasseur</a>
*/
public class JoinPointManager {
/**
* The JIT compilation boundry for nr of method invocations before optimizing a certain method.
*/
private static final long JIT_COMPILATION_BOUNDRY;
/**
* Turns on/off the JIT compiler.
*/
private static final boolean ENABLE_JIT_COMPILATION;
static {
String noJIT = java.lang.System.getProperty("aspectwerkz.jit.off");
if (((noJIT != null) && ("true".equalsIgnoreCase(noJIT) || "yes".equalsIgnoreCase(noJIT)))) {
ENABLE_JIT_COMPILATION = false;
} else {
ENABLE_JIT_COMPILATION = true;
}
String boundry = java.lang.System.getProperty("aspectwerkz.jit.boundry");
if (boundry != null) {
JIT_COMPILATION_BOUNDRY = new Long(boundry).longValue();
} else {
JIT_COMPILATION_BOUNDRY = 1L;
}
}
/**
* Block size of the join point index repository grow algorithm.
*/
private static final int JOIN_POINT_INDEX_GROW_BLOCK = 10;
private static final Map s_managers = new HashMap();
private static final JoinPointRegistry s_registry = new JoinPointRegistry();
private final JavaClassInfoRepository m_classInfoRepository;
private final AspectSystem m_system;
private final Class m_targetClass;
private final int m_classHash;
private int m_hotswapCount = 0;
private ThreadLocal[] m_joinPoints = new ThreadLocal[0];
// private final ReadWriteLock m_readWriteLock = new ReaderPreferenceReadWriteLock();
/**
* Creates a new join point manager for a specific class.
*
* @param targetClass
*/
private JoinPointManager(final Class targetClass) {
m_system = SystemLoader.getSystem(targetClass.getClassLoader());
m_targetClass = targetClass;
m_classHash = m_targetClass.hashCode();
m_classInfoRepository = JavaClassInfoRepository.getRepository(targetClass.getClassLoader());
m_hotswapCount = 0;
}
/**
* Creates a new join point manager for a specific class.
*
* @param targetClass
* @param hotswapCount
*/
private JoinPointManager(final Class targetClass, int hotswapCount) {
m_system = SystemLoader.getSystem(targetClass.getClassLoader());
m_targetClass = targetClass;
m_classHash = m_targetClass.hashCode();
m_classInfoRepository = JavaClassInfoRepository.getRepository(targetClass.getClassLoader());
m_hotswapCount = hotswapCount;
}
/**
* Returns the join point manager for a specific class.
*
* @param targetClass
* @param uuid
* @return the join point manager instance for this class
* @TODO: UUID is not use or needed anymore, remove it from the TFs
*/
public final static JoinPointManager getJoinPointManager(final Class targetClass, final String uuid) {
if (s_managers.containsKey(targetClass)) { //TODO AVAOPC should be Weak ?
return (JoinPointManager)s_managers.get(targetClass);
} else {
JoinPointManager manager = new JoinPointManager(targetClass);
s_managers.put(targetClass, manager);
return manager;
}
}
/**
* Returs the join point registry.
*
* @return the join point registry
*/
public static JoinPointRegistry getJoinPointRegistry() {
return s_registry;
}
/**
* Checks if a join point is advised, this does not mean that it has any advices attached to it.
* <p/>
* This method should be used by inserting a check in the wrapper/proxy method similar to this:
* <pre>
* if (___AW_joinPointManager.hasAdvices(joinPointHash)) {
* // execute the advice chain
* }
* else {
* // invoke the prefixed target method
* }
* </pre>
*
* @param joinPointHash
* @return
*/
public boolean isAdvised(final int joinPointHash) {
// TODO: impl.
return true;
// return s_registry.getStateForJoinPoint(m_classHash, joinPointHash) > JoinPointState.NOT_ADVISED;
}
/**
* Proceeds with the invocation of the join point, passing on the method hash, the parameter values and the target
* instance.
*
* @param methodHash
* @param joinPointIndex
* @param parameters
* @param targetInstance
* @param joinPointType
* @return
* @throws Throwable
*/
public final Object proceedWithExecutionJoinPoint(
final int methodHash, final int joinPointIndex,
final Object[] parameters, final Object targetInstance,
final int joinPointType) throws Throwable {
ThreadLocal threadLocal;
if (joinPointIndex < 0) {
throw new RuntimeException();
}
// m_readWriteLock.writeLock().acquire();
synchronized (m_joinPoints) {
// try {
if ((joinPointIndex >= m_joinPoints.length) || (m_joinPoints[joinPointIndex] == null)) {
s_registry.registerJoinPoint(
joinPointType, methodHash, null, m_classHash, m_targetClass, null, m_system
);
threadLocal = new ThreadLocal();
if (m_joinPoints.length <= joinPointIndex) {
ThreadLocal[] tmp = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(m_joinPoints, 0, tmp, 0, m_joinPoints.length);
m_joinPoints = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(tmp, 0, m_joinPoints, 0, tmp.length);
}
m_joinPoints[joinPointIndex] = threadLocal;
} else {
threadLocal = m_joinPoints[joinPointIndex];
}
}
// } finally {
// m_readWriteLock.writeLock().release();
// }
//
JoinPointInfo joinPointInfo = (JoinPointInfo)threadLocal.get();
if (joinPointInfo == null) {
joinPointInfo = new JoinPointInfo();
threadLocal.set(joinPointInfo);
}
if (ENABLE_JIT_COMPILATION && !joinPointInfo.isJitCompiled) {
handleJitCompilation(
methodHash, joinPointType, PointcutType.EXECUTION, joinPointInfo, m_targetClass,
m_targetClass, targetInstance, targetInstance
);
}
JoinPoint joinPoint = joinPointInfo.joinPoint;
// if null or redefined -> create a new join point and cache it
if (joinPoint == null) {
Map joinPointMetaDataMap = s_registry.getJoinPointMetaData(m_classHash, methodHash);
JoinPointMetaData joinPointMetaData = (JoinPointMetaData)joinPointMetaDataMap.get(PointcutType.EXECUTION);
AdviceIndexInfo[] adviceIndexes = joinPointMetaData.adviceIndexes;
List cflowExpressions = joinPointMetaData.cflowExpressions;
Pointcut cflowPointcut = joinPointMetaData.cflowPointcut;
initCflowManagement(cflowPointcut, joinPointInfo);
switch (joinPointType) {
case JoinPointType.METHOD_EXECUTION:
joinPoint = createMethodJoinPoint(
methodHash, joinPointType, m_targetClass, adviceIndexes,
joinPointMetaData, targetInstance, targetInstance
);
break;
case JoinPointType.CONSTRUCTOR_EXECUTION:
joinPoint = createConstructorJoinPoint(
methodHash, joinPointType, m_targetClass, adviceIndexes,
joinPointMetaData, targetInstance, targetInstance
);
break;
default:
throw new RuntimeException("join point type not valid");
}
// set the join point
joinPointInfo.joinPoint = joinPoint;
// update the state
if (adviceIndexes.length == 0) {
joinPointInfo.state = JoinPointState.ADVISED;
} else {
joinPointInfo.state = JoinPointState.HAS_ADVICES;
}
}
// set the RTTI
joinPoint.setTargetInstance(targetInstance);
if (parameters != null) {
((CodeRtti)joinPoint.getRtti()).setParameterValues(parameters);
}
enterCflow(joinPointInfo);
try {
return joinPoint.proceed();
} finally {
exitCflow(joinPointInfo);
}
}
/**
* Proceeds with the invocation of the join point, passing on the method hash, the parameter values and the target
* instance.
*
* @param methodHash
* @param joinPointIndex
* @param parameters
* @param targetClass
* @param targetInstance
* @param thisClass
* @param thisInstance
* @param withinMethodName
* @param withinMethodSignature
* @param joinPointType
* @return the result from the method invocation
* @throws Throwable
*/
public final Object proceedWithCallJoinPoint(
final int methodHash, final int joinPointIndex,
final Object[] parameters, final Class targetClass,
final Object targetInstance, final Class thisClass,
final Object thisInstance, final String withinMethodName,
final String withinMethodSignature, final int joinPointType)
throws Throwable {
ThreadLocal threadLocal;
synchronized (m_joinPoints) {
if ((joinPointIndex >= m_joinPoints.length) || (m_joinPoints[joinPointIndex] == null)) {
MemberInfo withinMemberInfo = TransformationUtil.createMemberInfo(
targetClass, withinMethodName,
withinMethodSignature
);
s_registry.registerJoinPoint(
joinPointType, methodHash, null, m_classHash, thisClass, withinMemberInfo,
m_system
);
threadLocal = new ThreadLocal();
if (m_joinPoints.length <= joinPointIndex) {
ThreadLocal[] tmp = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(m_joinPoints, 0, tmp, 0, m_joinPoints.length);
m_joinPoints = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(tmp, 0, m_joinPoints, 0, tmp.length);
}
m_joinPoints[joinPointIndex] = threadLocal;
} else {
threadLocal = m_joinPoints[joinPointIndex];
}
}
JoinPointInfo joinPointInfo = (JoinPointInfo)threadLocal.get();
if (joinPointInfo == null) {
joinPointInfo = new JoinPointInfo();
threadLocal.set(joinPointInfo);
}
// TODO: make diff between target and this instances
if (ENABLE_JIT_COMPILATION && !joinPointInfo.isJitCompiled) {
handleJitCompilation(
methodHash, joinPointType, PointcutType.CALL, joinPointInfo, thisClass, m_targetClass,
thisInstance, thisInstance
);
}
JoinPoint joinPoint = joinPointInfo.joinPoint;
// if null or redefined -> create a new join point and cache it
if (joinPoint == null) {
Map joinPointMetaDataMap = s_registry.getJoinPointMetaData(m_classHash, methodHash);
JoinPointMetaData joinPointMetaData = (JoinPointMetaData)joinPointMetaDataMap.get(PointcutType.CALL);
AdviceIndexInfo[] adviceIndexes = joinPointMetaData.adviceIndexes;
List cflowExpressions = joinPointMetaData.cflowExpressions;
Pointcut cflowPointcut = joinPointMetaData.cflowPointcut;
initCflowManagement(cflowPointcut, joinPointInfo);
switch (joinPointType) {
case JoinPointType.METHOD_CALL:
// TODO: make diff between target and this instances
joinPoint = createMethodJoinPoint(
methodHash, joinPointType, thisClass, adviceIndexes,
joinPointMetaData, thisInstance, thisInstance
);
break;
case JoinPointType.CONSTRUCTOR_CALL:
// TODO: make diff between target and this instances
joinPoint = createConstructorJoinPoint(
methodHash, joinPointType, thisClass, adviceIndexes,
joinPointMetaData, thisInstance, thisInstance
);
break;
default:
throw new RuntimeException("join point type not valid");
}
// set the join point
joinPointInfo.joinPoint = joinPoint;
// update the state
if (adviceIndexes.length == 0) {
joinPointInfo.state = JoinPointState.ADVISED;
} else {
joinPointInfo.state = JoinPointState.HAS_ADVICES;
}
}
joinPoint.setTargetInstance(thisInstance);
if (parameters != null) {
((CodeRtti)joinPoint.getRtti()).setParameterValues(parameters);
}
enterCflow(joinPointInfo);
try {
return joinPoint.proceed();
} finally {
exitCflow(joinPointInfo);
}
}
/**
* Proceeds with the invocation of the join point, passing on the method hash, the parameter values and the target
* instance.
*
* @param fieldHash
* @param joinPointIndex
* @param fieldValue as the first arg in an Object array
* @param targetInstance
* @param declaringClass
* @param fieldSignature
* @throws Throwable
*/
public final void proceedWithSetJoinPoint(
final int fieldHash, final int joinPointIndex, final Object[] fieldValue,
final Object targetInstance, final Class declaringClass,
final String fieldSignature) throws Throwable {
ThreadLocal threadLocal;
synchronized (m_joinPoints) {
if ((joinPointIndex >= m_joinPoints.length) || (m_joinPoints[joinPointIndex] == null)) {
s_registry.registerJoinPoint(
JoinPointType.FIELD_SET, fieldHash, fieldSignature, m_classHash,
declaringClass, null, m_system
);
threadLocal = new ThreadLocal();
if (m_joinPoints.length <= joinPointIndex) {
ThreadLocal[] tmp = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(m_joinPoints, 0, tmp, 0, m_joinPoints.length);
m_joinPoints = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(tmp, 0, m_joinPoints, 0, tmp.length);
}
m_joinPoints[joinPointIndex] = threadLocal;
} else {
threadLocal = m_joinPoints[joinPointIndex];
}
}
JoinPointInfo joinPointInfo = (JoinPointInfo)threadLocal.get();
if (joinPointInfo == null) {
joinPointInfo = new JoinPointInfo();
threadLocal.set(joinPointInfo);
}
if (ENABLE_JIT_COMPILATION && !joinPointInfo.isJitCompiled) {
handleJitCompilation(
fieldHash, JoinPointType.FIELD_SET, PointcutType.SET, joinPointInfo, declaringClass,
m_targetClass, targetInstance, targetInstance
);
}
JoinPoint joinPoint = joinPointInfo.joinPoint;
// if null or redefined -> create a new join point and cache it
if (joinPoint == null) {
Map joinPointMetaDataMap = s_registry.getJoinPointMetaData(m_classHash, fieldHash);
JoinPointMetaData joinPointMetaData = (JoinPointMetaData)joinPointMetaDataMap.get(PointcutType.SET);
AdviceIndexInfo[] adviceIndexes = joinPointMetaData.adviceIndexes;
List cflowExpressions = joinPointMetaData.cflowExpressions;
Pointcut cflowPointcut = joinPointMetaData.cflowPointcut;
initCflowManagement(cflowPointcut, joinPointInfo);
joinPoint = createFieldJoinPoint(
fieldHash, JoinPointType.FIELD_SET, m_targetClass, adviceIndexes,
joinPointMetaData, targetInstance, targetInstance
);
// set the join point
joinPointInfo.joinPoint = joinPoint;
// update the state
if (adviceIndexes.length == 0) {
joinPointInfo.state = JoinPointState.ADVISED;
} else {
joinPointInfo.state = JoinPointState.HAS_ADVICES;
}
}
// intialize the join point before each usage
joinPoint.setTargetInstance(targetInstance);
if (fieldValue[0] != null) {
((FieldRtti)joinPoint.getRtti()).setFieldValue(fieldValue[0]); // array due to sucky javassist field handling
}
enterCflow(joinPointInfo);
try {
joinPoint.proceed();
} finally {
exitCflow(joinPointInfo);
}
}
/**
* Proceeds with the invocation of the join point, passing on the method hash, the parameter values and the target
* instance.
*
* @param fieldHash
* @param joinPointIndex
* @param targetInstance
* @param declaringClass
* @param fieldSignature
* @throws Throwable
*/
public final Object proceedWithGetJoinPoint(
final int fieldHash, final int joinPointIndex,
final Object targetInstance, final Class declaringClass,
final String fieldSignature) throws Throwable {
ThreadLocal threadLocal;
synchronized (m_joinPoints) {
if ((joinPointIndex >= m_joinPoints.length) || (m_joinPoints[joinPointIndex] == null)) {
s_registry.registerJoinPoint(
JoinPointType.FIELD_GET, fieldHash, fieldSignature, m_classHash,
declaringClass, null, m_system
);
threadLocal = new ThreadLocal();
if (m_joinPoints.length <= joinPointIndex) {
ThreadLocal[] tmp = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(m_joinPoints, 0, tmp, 0, m_joinPoints.length);
m_joinPoints = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(tmp, 0, m_joinPoints, 0, tmp.length);
}
m_joinPoints[joinPointIndex] = threadLocal;
} else {
threadLocal = m_joinPoints[joinPointIndex];
}
}
JoinPointInfo joinPointInfo = (JoinPointInfo)threadLocal.get();
if (joinPointInfo == null) {
joinPointInfo = new JoinPointInfo();
threadLocal.set(joinPointInfo);
}
if (ENABLE_JIT_COMPILATION && !joinPointInfo.isJitCompiled) {
handleJitCompilation(
fieldHash, JoinPointType.FIELD_GET, PointcutType.GET, joinPointInfo, declaringClass,
m_targetClass, targetInstance, targetInstance
);
}
JoinPoint joinPoint = joinPointInfo.joinPoint;
// if null or redefined -> create a new join point and cache it
if (joinPoint == null) {
Map joinPointMetaDataMap = s_registry.getJoinPointMetaData(m_classHash, fieldHash);
JoinPointMetaData joinPointMetaData = (JoinPointMetaData)joinPointMetaDataMap.get(PointcutType.GET);
AdviceIndexInfo[] adviceIndexes = joinPointMetaData.adviceIndexes;
List cflowExpressions = joinPointMetaData.cflowExpressions;
Pointcut cflowPointcut = joinPointMetaData.cflowPointcut;
initCflowManagement(cflowPointcut, joinPointInfo);
joinPoint = createFieldJoinPoint(
fieldHash, JoinPointType.FIELD_GET, m_targetClass, adviceIndexes,
joinPointMetaData, targetInstance, targetInstance
);
// set the join point
joinPointInfo.joinPoint = joinPoint;
// update the state
if (adviceIndexes.length == 0) {
joinPointInfo.state = JoinPointState.ADVISED;
} else {
joinPointInfo.state = JoinPointState.HAS_ADVICES;
}
}
// intialize the join point before each usage
joinPoint.setTargetInstance(targetInstance);
enterCflow(joinPointInfo);
try {
return joinPoint.proceed();
} finally {
exitCflow(joinPointInfo);
}
}
/**
* Proceeds with the invocation of the join point, passing on the method hash, the parameter values and the target
* instance.
*
* @param handlerHash
* @param joinPointIndex
* @param exceptionInstance
* @param targetInstance
* @param handlerSignature
* @throws Throwable
*/
public final void proceedWithHandlerJoinPoint(
final int handlerHash, final int joinPointIndex,
final Object exceptionInstance, final Object targetInstance,
final String handlerSignature) throws Throwable {
ThreadLocal threadLocal;
synchronized (m_joinPoints) {
if ((joinPointIndex >= m_joinPoints.length) || (m_joinPoints[joinPointIndex] == null)) {
ClassInfo withinClassInfo = createClassInfo(m_targetClass);
s_registry.registerJoinPoint(
JoinPointType.HANDLER, handlerHash, handlerSignature, m_classHash,
exceptionInstance.getClass(), withinClassInfo, m_system
);
threadLocal = new ThreadLocal();
if (m_joinPoints.length <= joinPointIndex) {
ThreadLocal[] tmp = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(m_joinPoints, 0, tmp, 0, m_joinPoints.length);
m_joinPoints = new ThreadLocal[joinPointIndex + JOIN_POINT_INDEX_GROW_BLOCK];
java.lang.System.arraycopy(tmp, 0, m_joinPoints, 0, tmp.length);
}
m_joinPoints[joinPointIndex] = threadLocal;
} else {
threadLocal = m_joinPoints[joinPointIndex];
}
}
JoinPointInfo joinPointInfo = (JoinPointInfo)threadLocal.get();
if (joinPointInfo == null) {
joinPointInfo = new JoinPointInfo();
threadLocal.set(joinPointInfo);
}
if (ENABLE_JIT_COMPILATION && !joinPointInfo.isJitCompiled) {
handleJitCompilation(
handlerHash, JoinPointType.HANDLER, PointcutType.HANDLER, joinPointInfo,
m_targetClass, m_targetClass, targetInstance, targetInstance
);
}
JoinPoint joinPoint = joinPointInfo.joinPoint;
// if null or redefined -> create a new join point and cache it
if (joinPoint == null) {
Map joinPointMetaDataMap = s_registry.getJoinPointMetaData(m_classHash, handlerHash);
JoinPointMetaData joinPointMetaData = (JoinPointMetaData)joinPointMetaDataMap.get(PointcutType.HANDLER);
AdviceIndexInfo[] adviceIndexes = joinPointMetaData.adviceIndexes;
List cflowExpressions = joinPointMetaData.cflowExpressions;
Pointcut cflowPointcut = joinPointMetaData.cflowPointcut;
initCflowManagement(cflowPointcut, joinPointInfo);
joinPoint = createCatchClauseJoinPoint(
exceptionInstance.getClass(), m_targetClass, handlerSignature,
adviceIndexes, joinPointMetaData, targetInstance, targetInstance
);
// set the join point
joinPointInfo.joinPoint = joinPoint;
// update the state
if (adviceIndexes.length == 0) {
joinPointInfo.state = JoinPointState.ADVISED;
} else {
joinPointInfo.state = JoinPointState.HAS_ADVICES;
}
}
// intialize the join point before each usage
joinPoint.setTargetInstance(targetInstance);
((CatchClauseRtti)joinPoint.getRtti()).setParameterValue(exceptionInstance);
enterCflow(joinPointInfo);
try {
joinPoint.proceed();
} finally {
exitCflow(joinPointInfo);
}
}
/**
* Creates a class info instance out of a class instance.
*
* @param klass
* @return class info
*/
private ClassInfo createClassInfo(final Class klass) {
ClassInfo classInfo = m_classInfoRepository.getClassInfo(klass.getName());
if (classInfo == null) {
classInfo = JavaClassInfo.getClassInfo(klass);
}
return classInfo;
}
/**
* Handles the Just-In-Time (JIT) compilation of the advice execution chains.
*
* @param joinPointHash
* @param joinPointType
* @param pointcutType
* @param joinPointInfo
* @param declaringClass
* @param targetClass
* @param thisInstance
* @param targetInstance
*/
private final void handleJitCompilation(
final int joinPointHash, final int joinPointType,
final PointcutType pointcutType, final JoinPointInfo joinPointInfo,
final Class declaringClass, final Class targetClass,
final Object thisInstance, final Object targetInstance) {
synchronized (joinPointInfo) {
joinPointInfo.invocations++;
if (joinPointInfo.state == JoinPointState.REDEFINED) {
joinPointInfo.invocations = 0L;
} else if (joinPointInfo.invocations == JIT_COMPILATION_BOUNDRY) {
Map joinPointMetaDataMap = s_registry.getJoinPointMetaData(m_classHash, joinPointHash);
if (joinPointMetaDataMap.containsKey(pointcutType)) {
JoinPointMetaData joinPointMetaData = (JoinPointMetaData)joinPointMetaDataMap.get(pointcutType);
AdviceIndexInfo[] adviceIndexes = joinPointMetaData.adviceIndexes;
joinPointInfo.joinPoint = JitCompiler.compileJoinPoint(
joinPointHash, joinPointType, pointcutType,
adviceIndexes, declaringClass, targetClass,
m_system, thisInstance, targetInstance,
m_hotswapCount
);
joinPointInfo.isJitCompiled = true;
}
}
}
}
/**
* Create a method join point.
*
* @param methodHash
* @param joinPointType
* @param declaringClass
* @param adviceIndexes
* @param joinPointMetaData
* @param thisInstance
* @param targetInstance
* @return
*/
private final MethodJoinPoint createMethodJoinPoint(
final int methodHash, final int joinPointType,
final Class declaringClass,
final AdviceIndexInfo[] adviceIndexes,
final JoinPointMetaData joinPointMetaData,
final Object thisInstance, final Object targetInstance) {
MethodTuple methodTuple = AspectRegistry.getMethodTuple(declaringClass, methodHash);
Class declaringType = methodTuple.getDeclaringClass();
MethodSignatureImpl signature = new MethodSignatureImpl(declaringType, methodTuple);
Rtti rtti = new MethodRttiImpl(signature, thisInstance, targetInstance);
return new MethodJoinPoint(
joinPointType, m_targetClass, signature, rtti, joinPointMetaData,
createAroundAdviceExecutor(adviceIndexes, joinPointType),
createBeforeAdviceExecutor(adviceIndexes), createAfterAdviceExecutor(adviceIndexes)
);
}
/**
* Create a constructor join point.
*
* @param constructorHash
* @param joinPointType
* @param declaringClass
* @param adviceIndexes
* @param joinPointMetaData
* @param thisInstance
* @param targetInstance
* @return
*/
private final JoinPoint createConstructorJoinPoint(
final int constructorHash, final int joinPointType,
final Class declaringClass,
final AdviceIndexInfo[] adviceIndexes,
final JoinPointMetaData joinPointMetaData,
final Object thisInstance, final Object targetInstance) {
ConstructorTuple constructorTuple = AspectRegistry.getConstructorTuple(declaringClass, constructorHash);
Class declaringType = constructorTuple.getDeclaringClass();
ConstructorSignatureImpl signature = new ConstructorSignatureImpl(declaringType, constructorTuple);
Rtti rtti = new ConstructorRttiImpl(signature, thisInstance, targetInstance);
return new ConstructorJoinPoint(
joinPointType, m_targetClass, signature, rtti, joinPointMetaData,
createAroundAdviceExecutor(adviceIndexes, joinPointType),
createBeforeAdviceExecutor(adviceIndexes),
createAfterAdviceExecutor(adviceIndexes)
);
}
/**
* Create a field join point.
*
* @param fieldHash
* @param joinPointType
* @param declaringClass
* @param adviceIndexes
* @param joinPointMetaData
* @param thisInstance
* @param targetInstance
* @return
*/
private final JoinPoint createFieldJoinPoint(
final int fieldHash, final int joinPointType,
final Class declaringClass, final AdviceIndexInfo[] adviceIndexes,
final JoinPointMetaData joinPointMetaData, final Object thisInstance,
final Object targetInstance) {
Field field = AspectRegistry.getField(declaringClass, fieldHash);
FieldSignatureImpl signature = new FieldSignatureImpl(declaringClass, field);
Rtti rtti = new FieldRttiImpl(signature, thisInstance, targetInstance);
return new FieldJoinPoint(
joinPointType, m_targetClass, signature, rtti, joinPointMetaData,
createAroundAdviceExecutor(adviceIndexes, joinPointType),
createBeforeAdviceExecutor(adviceIndexes), createAfterAdviceExecutor(adviceIndexes)
);
}
/**
* Create a catch clause join point.
*
* @param exceptionClass
* @param declaringClass
* @param catchClauseSignature
* @param adviceIndexes
* @param joinPointMetaData
* @param thisInstance
* @param targetInstance
* @return
*/
private final JoinPoint createCatchClauseJoinPoint(
final Class exceptionClass, final Class declaringClass,
final String catchClauseSignature,
final AdviceIndexInfo[] adviceIndexes,
final JoinPointMetaData joinPointMetaData,
final Object thisInstance, final Object targetInstance) {
CatchClauseSignatureImpl signature = new CatchClauseSignatureImpl(
exceptionClass, declaringClass,
catchClauseSignature
);
Rtti rtti = new CatchClauseRttiImpl(signature, thisInstance, targetInstance);
return new CatchClauseJoinPoint(
m_targetClass, signature, rtti, joinPointMetaData,
createAroundAdviceExecutor(adviceIndexes, JoinPointType.HANDLER),
createBeforeAdviceExecutor(adviceIndexes),
createAfterAdviceExecutor(adviceIndexes)
);
}
/**
* Creates an around advice executor.
*
* @param adviceIndexes
* @param joinPointType
* @return the advice executor
*/
private final AroundAdviceExecutor createAroundAdviceExecutor(
final AdviceIndexInfo[] adviceIndexes,
final int joinPointType) {
return new AroundAdviceExecutor(extractAroundAdvice(adviceIndexes), joinPointType);
}
/**
* Creates a before advice executor.
*
* @param adviceIndexes
* @return the advice executor
*/
private final BeforeAdviceExecutor createBeforeAdviceExecutor(final AdviceIndexInfo[] adviceIndexes) {
return new BeforeAdviceExecutor(extractBeforeAdvice(adviceIndexes));
}
/**
* Creates an after advice executor.
*
* @param adviceIndexes
* @return the advice executor
*/
private final AfterAdviceExecutor createAfterAdviceExecutor(final AdviceIndexInfo[] adviceIndexes) {
return new AfterAdviceExecutor(extractAfterAdvice(adviceIndexes));
}
/**
* Extracts the around advices.
*
* @param adviceIndexes
* @return
*/
public final static IndexTuple[] extractAroundAdvice(final AdviceIndexInfo[] adviceIndexes) {
int i;
int j;
List aroundAdviceList = new ArrayList();
for (i = 0; i < adviceIndexes.length; i++) {
AdviceIndexInfo adviceIndex = adviceIndexes[i];
IndexTuple[] indexTuples = adviceIndex.getAroundAdvices();
for (j = 0; j < indexTuples.length; j++) {
aroundAdviceList.add(indexTuples[j]);
}
}
IndexTuple[] aroundAdvices = new IndexTuple[aroundAdviceList.size()];
i = 0;
for (Iterator it = aroundAdviceList.iterator(); it.hasNext(); i++) {
aroundAdvices[i] = (IndexTuple)it.next();
}
return aroundAdvices;
}
/**
* Extracts the before advices.
*
* @param adviceIndexes
* @return
*/
public final static IndexTuple[] extractBeforeAdvice(final AdviceIndexInfo[] adviceIndexes) {
int i;
int j;
List beforeAdviceList = new ArrayList();
for (i = 0; i < adviceIndexes.length; i++) {
AdviceIndexInfo adviceIndex = adviceIndexes[i];
IndexTuple[] indexTuples = adviceIndex.getBeforeAdvices();
for (j = 0; j < indexTuples.length; j++) {
beforeAdviceList.add(indexTuples[j]);
}
}
IndexTuple[] beforeAdvices = new IndexTuple[beforeAdviceList.size()];
i = 0;
for (Iterator it = beforeAdviceList.iterator(); it.hasNext(); i++) {
beforeAdvices[i] = (IndexTuple)it.next();
}
return beforeAdvices;
}
/**
* Extracts the after advices.
*
* @param adviceIndexes
* @return
*/
public final static IndexTuple[] extractAfterAdvice(final AdviceIndexInfo[] adviceIndexes) {
int i;
int j;
List afterAdviceList = new ArrayList();
for (i = 0; i < adviceIndexes.length; i++) {
AdviceIndexInfo adviceIndex = adviceIndexes[i];
IndexTuple[] indexTuples = adviceIndex.getAfterAdvices();
for (j = 0; j < indexTuples.length; j++) {
afterAdviceList.add(indexTuples[j]);
}
}
IndexTuple[] afterAdvices = new IndexTuple[afterAdviceList.size()];
i = 0;
for (Iterator it = afterAdviceList.iterator(); it.hasNext(); i++) {
afterAdvices[i] = (IndexTuple)it.next();
}
return afterAdvices;
}
/**
* Reset the join point manager.
*
* @param klass
*/
public static synchronized void reset(Class klass) {
JoinPointManager oldJoinPointManager = getJoinPointManager(klass, "N/A/runtime");
// flush JP Registry
s_registry.reset(klass.hashCode());
JoinPointManager joinPointManager = new JoinPointManager(klass, oldJoinPointManager.m_hotswapCount + 1);
s_managers.put(klass, joinPointManager);
try {
Field jpMan = klass.getDeclaredField(TransformationUtil.JOIN_POINT_MANAGER_FIELD);
jpMan.setAccessible(true);
jpMan.set(null, joinPointManager);
} catch (Exception e) {
System.err.println("ERROR: Unable to propagate JoinPointManager");
e.printStackTrace();
}
joinPointManager.m_joinPoints = new ThreadLocal[0];
}
/**
* Records entering into cflow.
*
* @param joinPointInfo
*/
private void enterCflow(final JoinPointInfo joinPointInfo) throws Throwable {
IndexTuple enter = joinPointInfo.enterCflow;
if (enter != null) {
enter.getAspectManager().getAspectContainer(enter.getAspectIndex()).invokeAdvice(
enter.getMethodIndex(),
joinPointInfo.joinPoint
);
}
}
/**
* Records exiting from cflow.
*
* @param joinPointInfo
*/
private void exitCflow(final JoinPointInfo joinPointInfo) throws Throwable {
IndexTuple exit = joinPointInfo.exitCflow;
if (exit != null) {
exit.getAspectManager().getAspectContainer(exit.getAspectIndex()).invokeAdvice(
exit.getMethodIndex(),
joinPointInfo.joinPoint
);
}
}
/**
* Initializes the cflow management.
*
* @param cflowPointcut
* @param joinPointInfo
*/
private void initCflowManagement(final Pointcut cflowPointcut, final JoinPointInfo joinPointInfo) {
if (cflowPointcut != null) {
IndexTuple[] beforeAdviceIndexes = cflowPointcut.getBeforeAdviceIndexes();
IndexTuple[] afterAdviceIndexes = cflowPointcut.getAfterAdviceIndexes();
if ((beforeAdviceIndexes.length != 0) && (afterAdviceIndexes.length != 0)) {
joinPointInfo.enterCflow = beforeAdviceIndexes[0];
joinPointInfo.exitCflow = afterAdviceIndexes[0];
}
}
}
/**
* Contains the JoinPoint instance and some RTTI about the join point.
*/
static class JoinPointInfo {
public JoinPoint joinPoint = null;
public int state = JoinPointState.NOT_ADVISED;
public long invocations = 0L;
public boolean isJitCompiled = false;
public IndexTuple enterCflow;
public IndexTuple exitCflow;
}
}