com.newrelic.agent.instrumentation

Class ReflectionStyleClassMethodAdapter

java.lang.Object

org.objectweb.asm.MethodVisitor

org.objectweb.asm.commons.LocalVariablesSorter

org.objectweb.asm.commons.GeneratorAdapter

org.objectweb.asm.commons.AdviceAdapter

com.newrelic.agent.instrumentation.ReflectionStyleClassMethodAdapter

All Implemented Interfaces:

org.objectweb.asm.Opcodes

public class ReflectionStyleClassMethodAdapter
extends org.objectweb.asm.commons.AdviceAdapter

The schema of classes which are already loaded cannot be modified with a retransformation. This means that we can't add out InvocationHandler fields to classes which have already loaded when our ClassTransformer is hooked up. In such cases, we instrument the class methods using the older instrumentation approach of getting the tracer by calling AgentWrapper.invoke(Object, java.lang.reflect.Method, Object[]). This adapter is commonly instrumenting bootstrap classes, but it may encounter non-bootstrap classes too.

Field Summary

Fields

Modifier and Type	Field and Description
protected GenericClassAdapter	genericClassAdapter
protected MethodBuilder	methodBuilder
protected java.lang.String	methodName

Fields inherited from class org.objectweb.asm.commons.AdviceAdapter

methodAccess, methodDesc

Fields inherited from class org.objectweb.asm.commons.GeneratorAdapter

ADD, AND, DIV, EQ, GE, GT, LE, LT, MUL, NE, NEG, OR, REM, SHL, SHR, SUB, USHR, XOR

Fields inherited from class org.objectweb.asm.commons.LocalVariablesSorter

firstLocal, nextLocal

Fields inherited from class org.objectweb.asm.MethodVisitor

api, mv

Fields inherited from interface org.objectweb.asm.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_RECORD, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM10_EXPERIMENTAL, ASM4, ASM5, ASM6, ASM7, ASM8, ASM9, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20, V21, V22, V23, V24, V9

Constructor Summary

Constructors

Constructor and Description
ReflectionStyleClassMethodAdapter(GenericClassAdapter genericClassAdapter, org.objectweb.asm.MethodVisitor mv, int access, org.objectweb.asm.commons.Method method, int tracerFactoryId)

Method Summary

Modifier and Type	Method and Description
GenericClassAdapter	getGenericClassAdapter()
int	getInvocationHandlerIndex()
protected org.objectweb.asm.Type	getTracerType()
protected void	invokeGetTracer()
protected void	invokeTraceFinish(int opcode, java.lang.Object loadReturnValue)
protected void	invokeTraceFinishWithThrowable(int exceptionVar)
protected void	loadGetTracerArguments()
protected void	onFinally(int opcode) Writes the instrumentation code that is executed after the existing method body.
protected void	onMethodEnter() Writes the instrumentation code that is executed before the existing method body.
protected void	onMethodExit(int opcode)
protected void	systemOutPrint(java.lang.String message)
protected void	systemPrint(java.lang.String message, boolean error)
void	visitCode()
void	visitMaxs(int maxStack, int maxLocals)

Methods inherited from class org.objectweb.asm.commons.AdviceAdapter

visitFieldInsn, visitInsn, visitIntInsn, visitInvokeDynamicInsn, visitJumpInsn, visitLabel, visitLdcInsn, visitLookupSwitchInsn, visitMethodInsn, visitMultiANewArrayInsn, visitTableSwitchInsn, visitTryCatchBlock, visitTypeInsn, visitVarInsn

Methods inherited from class org.objectweb.asm.commons.GeneratorAdapter

arrayLength, arrayLoad, arrayStore, box, cast, catchException, checkCast, dup, dup2, dup2X1, dup2X2, dupX1, dupX2, endMethod, getAccess, getArgumentTypes, getField, getLocalType, getName, getReturnType, getStatic, goTo, ifCmp, ifICmp, ifNonNull, ifNull, ifZCmp, iinc, instanceOf, invokeConstructor, invokeDynamic, invokeInterface, invokeStatic, invokeVirtual, loadArg, loadArgArray, loadArgs, loadArgs, loadLocal, loadLocal, loadThis, mark, mark, math, monitorEnter, monitorExit, newArray, newInstance, newLabel, not, pop, pop2, push, push, push, push, push, push, push, push, push, putField, putStatic, ret, returnValue, setLocalType, storeArg, storeLocal, storeLocal, swap, swap, tableSwitch, tableSwitch, throwException, throwException, unbox, valueOf

Methods inherited from class org.objectweb.asm.commons.LocalVariablesSorter

newLocal, newLocalMapping, updateNewLocals, visitFrame, visitIincInsn, visitLocalVariable, visitLocalVariableAnnotation

Methods inherited from class org.objectweb.asm.MethodVisitor

getDelegate, visitAnnotableParameterCount, visitAnnotation, visitAnnotationDefault, visitAttribute, visitEnd, visitInsnAnnotation, visitLineNumber, visitMethodInsn, visitParameter, visitParameterAnnotation, visitTryCatchAnnotation, visitTypeAnnotation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

methodName

protected final java.lang.String methodName

genericClassAdapter

protected final GenericClassAdapter genericClassAdapter

methodBuilder

protected final MethodBuilder methodBuilder

Constructor Detail

ReflectionStyleClassMethodAdapter

public ReflectionStyleClassMethodAdapter(GenericClassAdapter genericClassAdapter,
                                         org.objectweb.asm.MethodVisitor mv,
                                         int access,
                                         org.objectweb.asm.commons.Method method,
                                         int tracerFactoryId)

Method Detail

loadGetTracerArguments

protected void loadGetTracerArguments()

systemOutPrint

protected void systemOutPrint(java.lang.String message)

systemPrint

protected void systemPrint(java.lang.String message,
                           boolean error)

onMethodEnter

protected void onMethodEnter()

Writes the instrumentation code that is executed before the existing method body. The injected byte-code will get an agent handle and get a tracer from the agent for this particular method invocation.

Overrides:

onMethodEnter in class org.objectweb.asm.commons.AdviceAdapter

getInvocationHandlerIndex

public int getInvocationHandlerIndex()

getTracerType

protected final org.objectweb.asm.Type getTracerType()

invokeGetTracer

protected final void invokeGetTracer()

getGenericClassAdapter

public GenericClassAdapter getGenericClassAdapter()

visitCode

public void visitCode()

Overrides:

visitCode in class org.objectweb.asm.commons.AdviceAdapter

visitMaxs

public void visitMaxs(int maxStack,
                      int maxLocals)

Overrides:

visitMaxs in class org.objectweb.asm.commons.LocalVariablesSorter

onMethodExit

protected void onMethodExit(int opcode)

Overrides:

onMethodExit in class org.objectweb.asm.commons.AdviceAdapter

onFinally

protected void onFinally(int opcode)

Writes the instrumentation code that is executed after the existing method body. The injected byte-code stores the method return value (or the throwable if an exception was thrown) and calls either ExitTracer.finish(int, Object) or ExitTracer.finish(Throwable). If this is a bootstrap class, the finish methods are invoked through the InvocationHandler wrapper around the tracer that was created by the AgentWrapper.

invokeTraceFinish

protected final void invokeTraceFinish(int opcode,
                                       java.lang.Object loadReturnValue)

invokeTraceFinishWithThrowable

protected final void invokeTraceFinishWithThrowable(int exceptionVar)