org.springsource.loaded.agent

Class CglibPluginCapturing

java.lang.Object

org.objectweb.asm.ClassVisitor

org.springsource.loaded.agent.CglibPluginCapturing

All Implemented Interfaces:

org.objectweb.asm.Opcodes, Constants

public class CglibPluginCapturing
extends org.objectweb.asm.ClassVisitor
implements Constants

This bytecode rewriter intercepts calls to generate made in the CGLIB framework and allows us to record what generator is called to create the proxy for some type. The same generator can then be driven again if the type is reloaded.

Since:

0.8.3

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.Map<java.lang.Class<?>,java.lang.Object[]>	clazzToGeneratorStrategyAndClassGeneratorMap
static java.util.Map<java.lang.Class<?>,java.lang.Object[]>	clazzToGeneratorStrategyAndFastClassGeneratorMap
java.lang.String	prefix

Fields inherited from class org.objectweb.asm.ClassVisitor

api, cv

Fields inherited from interface org.springsource.loaded.Constants

ACC_PRIVATE_PROTECTED, ACC_PRIVATE_STATIC, ACC_PRIVATE_STATIC_FINAL, ACC_PRIVATE_STATIC_SYNTHETIC, ACC_PUBLIC_ABSTRACT, ACC_PUBLIC_INTERFACE, ACC_PUBLIC_PRIVATE_PROTECTED, ACC_PUBLIC_PROTECTED, ACC_PUBLIC_STATIC, ACC_PUBLIC_STATIC_FINAL, ACC_PUBLIC_STATIC_SYNTHETIC, ACC_PUBLIC_SYNTHETIC, DEFAULT_BOOLEAN, DEFAULT_BYTE, DEFAULT_CHAR, DEFAULT_DOUBLE, DEFAULT_FLOAT, DEFAULT_INT, DEFAULT_LONG, DEFAULT_SHORT, descriptorChangedForInvokeSpecialName, executorClassNamePattern, fInstanceFieldsName, fReloadableTypeFieldName, fStaticFieldsName, JLC_GETCONSTRUCTOR, JLC_GETDECLAREDCONSTRUCTOR, JLC_GETDECLAREDCONSTRUCTORS, JLC_GETDECLAREDFIELD, JLC_GETDECLAREDFIELDS, JLC_GETDECLAREDMETHOD, JLC_GETDECLAREDMETHODS, JLC_GETFIELD, JLC_GETMETHOD, JLC_GETMETHODS, JLC_GETMODIFIERS, jlcgc, jlcgcDescriptor, jlcgdc, jlcgdcDescriptor, jlcgdf, jlcgdfDescriptor, jlcgdfs, jlcgdfsDescriptor, jlcgdm, jlcgdmDescriptor, jlcgdms, jlcgdmsDescriptor, jlcGetDeclaredConstructorsDescriptor, jlcGetDeclaredConstructorsMember, jlcgf, jlcgfDescriptor, jlcgm, jlcgmDescriptor, jlcgmods, jlcgmodsDescriptor, jlcgms, jlcgmsDescriptor, jlObject, jloObjectStream_hasInitializerMethod, JLOS_HASSTATICINITIALIZER, JLRF_GET, JLRF_GETLONG, jlrfGetDescriptor, jlrfGetLongDescriptor, jlrfGetLongMember, jlrfGetMember, JLRM_INVOKE, jlrmInvokeDescriptor, jlrmInvokeMember, lDynamicallyDispatchable, lInstanceStateManager, lRegistryType, lReloadableType, lStaticStateManager, magicDescriptorForGeneratedCtors, mChangedForConstructorName, mChangedForInvocationName, mChangedForInvokeDynamicName, mChangedForInvokeInterfaceName, mChangedForInvokeSpecialName, mChangedForInvokeStaticName, mChangedForInvokeVirtualName, mDynamicDispatchDescriptor, mDynamicDispatchName, methodSuffixSuperDispatcher, mInitializerName, mInstanceFieldGetterDescriptor, mInstanceFieldGetterName, mInstanceFieldInterceptionRequired, mInstanceFieldSetterDescriptor, mInstanceFieldSetterName, mPerformInvokeDynamicName, mStaticFieldGetterName, mStaticFieldInterceptionRequired, mStaticFieldSetterDescriptor, mStaticFieldSetterName, mStaticInitializerName, NO_FIELDS, NO_METHODS, NO_STRINGS, PREFIX, tDynamicallyDispatchable, tInstanceStateManager, tRegistryType, tReloadableType, tStaticStateManager, WAS_INVOKESTATIC, WAS_INVOKEVIRTUAL

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_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, ASM5, 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, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8

Method Summary

Modifier and Type	Method and Description
static byte[]	catchGenerate(byte[] bytesIn)
byte[]	getBytes()
static void	record(java.lang.Object a, java.lang.Object b) The classloader for class artifacts is used to load the generated classes for call sites.
void	visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)
org.objectweb.asm.MethodVisitor	visitMethod(int access, java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions)

Methods inherited from class org.objectweb.asm.ClassVisitor

visitAnnotation, visitAttribute, visitEnd, visitField, visitInnerClass, visitOuterClass, visitSource, visitTypeAnnotation

Methods inherited from class java.lang.Object

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

Field Detail

clazzToGeneratorStrategyAndClassGeneratorMap

public static java.util.Map<java.lang.Class<?>,java.lang.Object[]> clazzToGeneratorStrategyAndClassGeneratorMap

clazzToGeneratorStrategyAndFastClassGeneratorMap

public static java.util.Map<java.lang.Class<?>,java.lang.Object[]> clazzToGeneratorStrategyAndFastClassGeneratorMap

prefix

public java.lang.String prefix

Method Detail

catchGenerate

public static byte[] catchGenerate(byte[] bytesIn)

visit

public void visit(int version,
                  int access,
                  java.lang.String name,
                  java.lang.String signature,
                  java.lang.String superName,
                  java.lang.String[] interfaces)

Overrides:

visit in class org.objectweb.asm.ClassVisitor

getBytes

public byte[] getBytes()

visitMethod

public org.objectweb.asm.MethodVisitor visitMethod(int access,
                                                   java.lang.String name,
                                                   java.lang.String desc,
                                                   java.lang.String signature,
                                                   java.lang.String[] exceptions)

Overrides:

visitMethod in class org.objectweb.asm.ClassVisitor

record

public static void record(java.lang.Object a,
                          java.lang.Object b)

The classloader for class artifacts is used to load the generated classes for call sites. We need to rewrite these classes because they may be either calling something that disappears on a later reload (so need to fail appropriately) or calling something that isnt there on the first load - in this latter case they are changed to route the dynamic executor method.

Parameters:

a - the GeneratorStrategy being used

b - the AbstractClassGenerator