com.newrelic.agent.instrumentation.tracing

Class TraceMethodVisitor

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.tracing.TraceMethodVisitor

All Implemented Interfaces:

org.objectweb.asm.Opcodes

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

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	className
static org.objectweb.asm.commons.Method	IGNORE_APDEX_METHOD
protected org.objectweb.asm.commons.Method	method

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, V25, V9

Constructor Summary

Constructors

Constructor and Description
TraceMethodVisitor(java.lang.String className, org.objectweb.asm.MethodVisitor mv, int access, java.lang.String name, java.lang.String desc, TraceDetails trace, boolean customTracer, boolean noticeSql, java.lang.Class<?> classBeingRedefined)

Method Summary

Modifier and Type	Method and Description
protected void	onEveryExit(int opcode) This code is injected at every exit instruction, whether a return or an ATHROW.
protected void	onMethodEnter()
protected void	onMethodExit(int opcode)
protected void	startTracer() Tracer t = null; t = AgentBridge.instrumentation.createTracer(...);
void	visitFieldInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc) Replace references to any field on TracedMethod with a load local instruction that loads the tracer.
void	visitMaxs(int maxStack, int maxLocals)
void	visitMethodInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc, boolean itf) Replaces calls to Agent.getTracedMethod() with a pop and a load local instruction that loads the tracer.

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

visitCode, visitInsn, visitIntInsn, visitInvokeDynamicInsn, visitJumpInsn, visitLabel, visitLdcInsn, visitLookupSwitchInsn, 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

method

protected final org.objectweb.asm.commons.Method method

className

protected final java.lang.String className

IGNORE_APDEX_METHOD

public static final org.objectweb.asm.commons.Method IGNORE_APDEX_METHOD

See Also:

NewRelic.ignoreApdex()

Constructor Detail

TraceMethodVisitor

public TraceMethodVisitor(java.lang.String className,
                          org.objectweb.asm.MethodVisitor mv,
                          int access,
                          java.lang.String name,
                          java.lang.String desc,
                          TraceDetails trace,
                          boolean customTracer,
                          boolean noticeSql,
                          java.lang.Class<?> classBeingRedefined)

Method Detail

onMethodEnter

protected void onMethodEnter()

Overrides:

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

startTracer

protected void startTracer()

Tracer t = null;
t = AgentBridge.instrumentation.createTracer(...);

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

onEveryExit

protected void onEveryExit(int opcode)

This code is injected at every exit instruction, whether a return or an ATHROW. If opcode is a throw: Throwable t = ;
if (tracer != null) {
tracer.finish(opcode, t);
}
Otherwise: if (tracer != null) {
tracer.finish(opcode, null);
}

visitFieldInsn

public void visitFieldInsn(int opcode,
                           java.lang.String owner,
                           java.lang.String name,
                           java.lang.String desc)

Replace references to any field on TracedMethod with a load local instruction that loads the tracer. This field was removed from our api but we still rewrite references to it to support old weave modules written outside of the agent.

Overrides:

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

visitMethodInsn

public void visitMethodInsn(int opcode,
                            java.lang.String owner,
                            java.lang.String name,
                            java.lang.String desc,
                            boolean itf)

Replaces calls to Agent.getTracedMethod() with a pop and a load local instruction that loads the tracer. Also Replaces calls to: DatastoreMetrics.noticeSql(Connection, String, Object[]) with instructions that store the values of the method call into the SqlTracer for use on tracer exit.

Overrides:

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

See Also:

NoOpTracedMethod.INSTANCE