ExecutionState (Jikes RVM API)

Overview

Package

Class

Use

Tree

Serialized

Deprecated

Index

Help

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

org.jikesrvm.osr
Class ExecutionState

java.lang.Object
  org.jikesrvm.osr.ExecutionState

All Implemented Interfaces:: BytecodeConstants, ClassLoaderConstants, OSRConstants, SizeConstants

public class ExecutionState
extends Object
implements OSRConstants, BytecodeConstants
extends Object
implements OSRConstants, BytecodeConstants

Field Summary
`int`	`bcIndex` the program pointer (bytecode index)
`int`	`callee_cmid` callee's compiled method id
`ExecutionState`	`callerState` the caller's state if this method is an inlinee
`int`	`cmid` the compiled method id of the activation (a Java method may have multiple version of compiled method
`Offset`	`fpOffset` the offset of frame pointer of the activation.
`private short`	`maxStackHeight`
`NormalMethod`	`meth` the method of which the execution state belongs to
`private int`	`objnum`
`private Object[]`	`objs`
`private int`	`rid`
`RVMThread`	`thread` the thread on which the activation is running
`Offset`	`tsFPOffset` the callee (threadSwitch)'s frame pointer of this activation.
`LinkedList<VariableElement>`	`varElms` runtime values of locals and stack expressions at the bytecode index Each element is an object of VariableElement.

Fields inherited from interface org.jikesrvm.osr.OSRConstants
ACONST, BCI_MASK, BCI_SHIFT, CLEANREFS, DOUBLE, FLOAT, GETREFAT, HIGH_64BIT, ICONST, IEI_MASK, IEI_SHIFT, INT, INVALID_BCI, INVALID_IEI, KIND_MASK, KIND_SHIFT, LCONST, LOCAL, LONG, NEXT_BIT, NO_OSR_ENTRY, NUM_MASK, NUM_SHIFT, OFFSET_MASK, OFFSET_SHIFT, OSRI_MASK, OSRI_SHIFT, PHYREG, PSEUDO_CheckCast, PSEUDO_InvokeCompiledMethod, PSEUDO_InvokeStatic, PSEUDO_LoadDoubleConst, PSEUDO_LoadFloatConst, PSEUDO_LoadIntConst, PSEUDO_LoadLongConst, PSEUDO_LoadRetAddrConst, PSEUDO_LoadWordConst, PSEUDO_ParamInitEnd, REF, RET_ADDR, ReturnAddressTypeCode, SPILL, STACK, TCODE_MASK, TCODE_SHIFT, VTYPE_MASK, VTYPE_SHIFT, WORD, WordTypeCode

Fields inherited from interface org.jikesrvm.osr.OSRConstants

ACONST, BCI_MASK, BCI_SHIFT, CLEANREFS, DOUBLE, FLOAT, GETREFAT, HIGH_64BIT, ICONST, IEI_MASK, IEI_SHIFT, INT, INVALID_BCI, INVALID_IEI, KIND_MASK, KIND_SHIFT, LCONST, LOCAL, LONG, NEXT_BIT, NO_OSR_ENTRY, NUM_MASK, NUM_SHIFT, OFFSET_MASK, OFFSET_SHIFT, OSRI_MASK, OSRI_SHIFT, PHYREG, PSEUDO_CheckCast, PSEUDO_InvokeCompiledMethod, PSEUDO_InvokeStatic, PSEUDO_LoadDoubleConst, PSEUDO_LoadFloatConst, PSEUDO_LoadIntConst, PSEUDO_LoadLongConst, PSEUDO_LoadRetAddrConst, PSEUDO_LoadWordConst, PSEUDO_ParamInitEnd, REF, RET_ADDR, ReturnAddressTypeCode, SPILL, STACK, TCODE_MASK, TCODE_SHIFT, VTYPE_MASK, VTYPE_SHIFT, WORD, WordTypeCode

Fields inherited from interface org.jikesrvm.SizeConstants
BITS_IN_ADDRESS, BITS_IN_BOOLEAN, BITS_IN_BYTE, BITS_IN_CHAR, BITS_IN_DOUBLE, BITS_IN_EXTENT, BITS_IN_FLOAT, BITS_IN_INT, BITS_IN_LONG, BITS_IN_OFFSET, BITS_IN_PAGE, BITS_IN_SHORT, BITS_IN_WORD, BYTES_IN_ADDRESS, BYTES_IN_BOOLEAN, BYTES_IN_BYTE, BYTES_IN_CHAR, BYTES_IN_DOUBLE, BYTES_IN_EXTENT, BYTES_IN_FLOAT, BYTES_IN_INT, BYTES_IN_LONG, BYTES_IN_OFFSET, BYTES_IN_PAGE, BYTES_IN_SHORT, BYTES_IN_WORD, LOG_BITS_IN_ADDRESS, LOG_BITS_IN_BOOLEAN, LOG_BITS_IN_BYTE, LOG_BITS_IN_CHAR, LOG_BITS_IN_DOUBLE, LOG_BITS_IN_EXTENT, LOG_BITS_IN_FLOAT, LOG_BITS_IN_INT, LOG_BITS_IN_LONG, LOG_BITS_IN_OFFSET, LOG_BITS_IN_PAGE, LOG_BITS_IN_SHORT, LOG_BITS_IN_WORD, LOG_BYTES_IN_ADDRESS, LOG_BYTES_IN_BOOLEAN, LOG_BYTES_IN_BYTE, LOG_BYTES_IN_CHAR, LOG_BYTES_IN_DOUBLE, LOG_BYTES_IN_EXTENT, LOG_BYTES_IN_FLOAT, LOG_BYTES_IN_INT, LOG_BYTES_IN_LONG, LOG_BYTES_IN_OFFSET, LOG_BYTES_IN_PAGE, LOG_BYTES_IN_SHORT, LOG_BYTES_IN_WORD

Fields inherited from interface org.jikesrvm.SizeConstants

BITS_IN_ADDRESS, BITS_IN_BOOLEAN, BITS_IN_BYTE, BITS_IN_CHAR, BITS_IN_DOUBLE, BITS_IN_EXTENT, BITS_IN_FLOAT, BITS_IN_INT, BITS_IN_LONG, BITS_IN_OFFSET, BITS_IN_PAGE, BITS_IN_SHORT, BITS_IN_WORD, BYTES_IN_ADDRESS, BYTES_IN_BOOLEAN, BYTES_IN_BYTE, BYTES_IN_CHAR, BYTES_IN_DOUBLE, BYTES_IN_EXTENT, BYTES_IN_FLOAT, BYTES_IN_INT, BYTES_IN_LONG, BYTES_IN_OFFSET, BYTES_IN_PAGE, BYTES_IN_SHORT, BYTES_IN_WORD, LOG_BITS_IN_ADDRESS, LOG_BITS_IN_BOOLEAN, LOG_BITS_IN_BYTE, LOG_BITS_IN_CHAR, LOG_BITS_IN_DOUBLE, LOG_BITS_IN_EXTENT, LOG_BITS_IN_FLOAT, LOG_BITS_IN_INT, LOG_BITS_IN_LONG, LOG_BITS_IN_OFFSET, LOG_BITS_IN_PAGE, LOG_BITS_IN_SHORT, LOG_BITS_IN_WORD, LOG_BYTES_IN_ADDRESS, LOG_BYTES_IN_BOOLEAN, LOG_BYTES_IN_BYTE, LOG_BYTES_IN_CHAR, LOG_BYTES_IN_DOUBLE, LOG_BYTES_IN_EXTENT, LOG_BYTES_IN_FLOAT, LOG_BYTES_IN_INT, LOG_BYTES_IN_LONG, LOG_BYTES_IN_OFFSET, LOG_BYTES_IN_PAGE, LOG_BYTES_IN_SHORT, LOG_BYTES_IN_WORD

Fields inherited from interface org.jikesrvm.classloader.ClassLoaderConstants
ACC_ABSTRACT, ACC_ANNOTATION, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VOLATILE, APPLICABLE_TO_CLASSES, APPLICABLE_TO_FIELDS, APPLICABLE_TO_METHODS, ArrayTypeCode, BooleanTypeCode, BRIDGE, ByteTypeCode, CharTypeCode, CLASS_INITIALIZED, CLASS_INITIALIZER_FAILED, CLASS_INITIALIZING, CLASS_INSTANTIATED, CLASS_LOADED, CLASS_RESOLVED, CLASS_VACANT, ClassTypeCode, CP_CLASS, CP_DOUBLE, CP_FLOAT, CP_INT, CP_LONG, CP_MEMBER, CP_STRING, CP_UTF, DoubleTypeCode, FloatTypeCode, IntTypeCode, LongTypeCode, ShortTypeCode, TAG_DOUBLE, TAG_FIELDREF, TAG_FLOAT, TAG_INT, TAG_INTERFACE_METHODREF, TAG_LONG, TAG_MEMBERNAME_AND_DESCRIPTOR, TAG_METHODREF, TAG_STRING, TAG_TYPEREF, TAG_UNUSED, TAG_UTF, VARARGS, VoidTypeCode

Fields inherited from interface org.jikesrvm.classloader.ClassLoaderConstants

ACC_ABSTRACT, ACC_ANNOTATION, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VOLATILE, APPLICABLE_TO_CLASSES, APPLICABLE_TO_FIELDS, APPLICABLE_TO_METHODS, ArrayTypeCode, BooleanTypeCode, BRIDGE, ByteTypeCode, CharTypeCode, CLASS_INITIALIZED, CLASS_INITIALIZER_FAILED, CLASS_INITIALIZING, CLASS_INSTANTIATED, CLASS_LOADED, CLASS_RESOLVED, CLASS_VACANT, ClassTypeCode, CP_CLASS, CP_DOUBLE, CP_FLOAT, CP_INT, CP_LONG, CP_MEMBER, CP_STRING, CP_UTF, DoubleTypeCode, FloatTypeCode, IntTypeCode, LongTypeCode, ShortTypeCode, TAG_DOUBLE, TAG_FIELDREF, TAG_FLOAT, TAG_INT, TAG_INTERFACE_METHODREF, TAG_LONG, TAG_MEMBERNAME_AND_DESCRIPTOR, TAG_METHODREF, TAG_STRING, TAG_TYPEREF, TAG_UNUSED, TAG_UTF, VARARGS, VoidTypeCode

Fields inherited from interface org.jikesrvm.classloader.BytecodeConstants
JBC_aaload, JBC_aastore, JBC_aconst_null, JBC_aload, JBC_aload_0, JBC_aload_1, JBC_aload_2, JBC_aload_3, JBC_anewarray, JBC_areturn, JBC_arraylength, JBC_astore, JBC_astore_0, JBC_astore_1, JBC_astore_2, JBC_astore_3, JBC_athrow, JBC_baload, JBC_bastore, JBC_bipush, JBC_caload, JBC_castore, JBC_checkcast, JBC_d2f, JBC_d2i, JBC_d2l, JBC_dadd, JBC_daload, JBC_dastore, JBC_dcmpg, JBC_dcmpl, JBC_dconst_0, JBC_dconst_1, JBC_ddiv, JBC_dload, JBC_dload_0, JBC_dload_1, JBC_dload_2, JBC_dload_3, JBC_dmul, JBC_dneg, JBC_drem, JBC_dreturn, JBC_dstore, JBC_dstore_0, JBC_dstore_1, JBC_dstore_2, JBC_dstore_3, JBC_dsub, JBC_dup, JBC_dup_x1, JBC_dup_x2, JBC_dup2, JBC_dup2_x1, JBC_dup2_x2, JBC_f2d, JBC_f2i, JBC_f2l, JBC_fadd, JBC_faload, JBC_fastore, JBC_fcmpg, JBC_fcmpl, JBC_fconst_0, JBC_fconst_1, JBC_fconst_2, JBC_fdiv, JBC_fload, JBC_fload_0, JBC_fload_1, JBC_fload_2, JBC_fload_3, JBC_fmul, JBC_fneg, JBC_frem, JBC_freturn, JBC_fstore, JBC_fstore_0, JBC_fstore_1, JBC_fstore_2, JBC_fstore_3, JBC_fsub, JBC_getfield, JBC_getstatic, JBC_goto, JBC_goto_w, JBC_i2d, JBC_i2f, JBC_i2l, JBC_iadd, JBC_iaload, JBC_iand, JBC_iastore, JBC_iconst_0, JBC_iconst_1, JBC_iconst_2, JBC_iconst_3, JBC_iconst_4, JBC_iconst_5, JBC_iconst_m1, JBC_idiv, JBC_if_acmpeq, JBC_if_acmpne, JBC_if_icmpeq, JBC_if_icmpge, JBC_if_icmpgt, JBC_if_icmple, JBC_if_icmplt, JBC_if_icmpne, JBC_ifeq, JBC_ifge, JBC_ifgt, JBC_ifle, JBC_iflt, JBC_ifne, JBC_ifnonnull, JBC_ifnull, JBC_iinc, JBC_iload, JBC_iload_0, JBC_iload_1, JBC_iload_2, JBC_iload_3, JBC_impdep1, JBC_impdep2, JBC_imul, JBC_ineg, JBC_instanceof, JBC_int2byte, JBC_int2char, JBC_int2short, JBC_invokeinterface, JBC_invokespecial, JBC_invokestatic, JBC_invokevirtual, JBC_ior, JBC_irem, JBC_ireturn, JBC_ishl, JBC_ishr, JBC_istore, JBC_istore_0, JBC_istore_1, JBC_istore_2, JBC_istore_3, JBC_isub, JBC_iushr, JBC_ixor, JBC_jsr, JBC_jsr_w, JBC_l2d, JBC_l2f, JBC_l2i, JBC_ladd, JBC_laload, JBC_land, JBC_lastore, JBC_lcmp, JBC_lconst_0, JBC_lconst_1, JBC_ldc, JBC_ldc_w, JBC_ldc2_w, JBC_ldiv, JBC_length, JBC_lload, JBC_lload_0, JBC_lload_1, JBC_lload_2, JBC_lload_3, JBC_lmul, JBC_lneg, JBC_lookupswitch, JBC_lor, JBC_lrem, JBC_lreturn, JBC_lshl, JBC_lshr, JBC_lstore, JBC_lstore_0, JBC_lstore_1, JBC_lstore_2, JBC_lstore_3, JBC_lsub, JBC_lushr, JBC_lxor, JBC_monitorenter, JBC_monitorexit, JBC_multianewarray, JBC_name, JBC_new, JBC_newarray, JBC_nop, JBC_pop, JBC_pop2, JBC_putfield, JBC_putstatic, JBC_ret, JBC_return, JBC_saload, JBC_sastore, JBC_sipush, JBC_swap, JBC_tableswitch, JBC_wide, JBC_xxxunusedxxx

Fields inherited from interface org.jikesrvm.classloader.BytecodeConstants

JBC_aaload, JBC_aastore, JBC_aconst_null, JBC_aload, JBC_aload_0, JBC_aload_1, JBC_aload_2, JBC_aload_3, JBC_anewarray, JBC_areturn, JBC_arraylength, JBC_astore, JBC_astore_0, JBC_astore_1, JBC_astore_2, JBC_astore_3, JBC_athrow, JBC_baload, JBC_bastore, JBC_bipush, JBC_caload, JBC_castore, JBC_checkcast, JBC_d2f, JBC_d2i, JBC_d2l, JBC_dadd, JBC_daload, JBC_dastore, JBC_dcmpg, JBC_dcmpl, JBC_dconst_0, JBC_dconst_1, JBC_ddiv, JBC_dload, JBC_dload_0, JBC_dload_1, JBC_dload_2, JBC_dload_3, JBC_dmul, JBC_dneg, JBC_drem, JBC_dreturn, JBC_dstore, JBC_dstore_0, JBC_dstore_1, JBC_dstore_2, JBC_dstore_3, JBC_dsub, JBC_dup, JBC_dup_x1, JBC_dup_x2, JBC_dup2, JBC_dup2_x1, JBC_dup2_x2, JBC_f2d, JBC_f2i, JBC_f2l, JBC_fadd, JBC_faload, JBC_fastore, JBC_fcmpg, JBC_fcmpl, JBC_fconst_0, JBC_fconst_1, JBC_fconst_2, JBC_fdiv, JBC_fload, JBC_fload_0, JBC_fload_1, JBC_fload_2, JBC_fload_3, JBC_fmul, JBC_fneg, JBC_frem, JBC_freturn, JBC_fstore, JBC_fstore_0, JBC_fstore_1, JBC_fstore_2, JBC_fstore_3, JBC_fsub, JBC_getfield, JBC_getstatic, JBC_goto, JBC_goto_w, JBC_i2d, JBC_i2f, JBC_i2l, JBC_iadd, JBC_iaload, JBC_iand, JBC_iastore, JBC_iconst_0, JBC_iconst_1, JBC_iconst_2, JBC_iconst_3, JBC_iconst_4, JBC_iconst_5, JBC_iconst_m1, JBC_idiv, JBC_if_acmpeq, JBC_if_acmpne, JBC_if_icmpeq, JBC_if_icmpge, JBC_if_icmpgt, JBC_if_icmple, JBC_if_icmplt, JBC_if_icmpne, JBC_ifeq, JBC_ifge, JBC_ifgt, JBC_ifle, JBC_iflt, JBC_ifne, JBC_ifnonnull, JBC_ifnull, JBC_iinc, JBC_iload, JBC_iload_0, JBC_iload_1, JBC_iload_2, JBC_iload_3, JBC_impdep1, JBC_impdep2, JBC_imul, JBC_ineg, JBC_instanceof, JBC_int2byte, JBC_int2char, JBC_int2short, JBC_invokeinterface, JBC_invokespecial, JBC_invokestatic, JBC_invokevirtual, JBC_ior, JBC_irem, JBC_ireturn, JBC_ishl, JBC_ishr, JBC_istore, JBC_istore_0, JBC_istore_1, JBC_istore_2, JBC_istore_3, JBC_isub, JBC_iushr, JBC_ixor, JBC_jsr, JBC_jsr_w, JBC_l2d, JBC_l2f, JBC_l2i, JBC_ladd, JBC_laload, JBC_land, JBC_lastore, JBC_lcmp, JBC_lconst_0, JBC_lconst_1, JBC_ldc, JBC_ldc_w, JBC_ldc2_w, JBC_ldiv, JBC_length, JBC_lload, JBC_lload_0, JBC_lload_1, JBC_lload_2, JBC_lload_3, JBC_lmul, JBC_lneg, JBC_lookupswitch, JBC_lor, JBC_lrem, JBC_lreturn, JBC_lshl, JBC_lshr, JBC_lstore, JBC_lstore_0, JBC_lstore_1, JBC_lstore_2, JBC_lstore_3, JBC_lsub, JBC_lushr, JBC_lxor, JBC_monitorenter, JBC_monitorexit, JBC_multianewarray, JBC_name, JBC_new, JBC_newarray, JBC_nop, JBC_pop, JBC_pop2, JBC_putfield, JBC_putstatic, JBC_ret, JBC_return, JBC_saload, JBC_sastore, JBC_sipush, JBC_swap, JBC_tableswitch, JBC_wide, JBC_xxxunusedxxx

Constructor Summary
`ExecutionState(RVMThread whichThread, Offset framePointerOffset, int compiledMethodID, int pc, Offset tsFPOffset)` Initializer

Method Summary
`void`	`add(VariableElement elm)` add a VariableElement
`void`	`addFirst(VariableElement elm)` insert as the first element, for convinience.
`private static PseudoBytecode`	`adjustStackHeight(PseudoBytecode last, int height)`
`private int`	`computeStackHeight(PseudoBytecode head)`
`private static byte[]`	`generateBinaries(PseudoBytecode bhead, int bsize)`
`byte[]`	`generatePrologue()` Goes through variable elements and produces specialized prologue using pseudo-bytecode.
`Offset`	`getFPOffset()`
`short`	`getMaxStackHeight()`
`NormalMethod`	`getMethod()`
`RVMThread`	`getThread()` returns thread.
`Offset`	`getTSFPOffset()`
`private static int`	`paddingBytecode(PseudoBytecode head)` Adds padding (NOP) at the beginning of pseudo bytecode to make the new bytecode size dividable by 4, then no branch target adjustment is needed in the original code.
`void`	`printState()` print the current state for debugging
`private PseudoBytecode`	`processElement(VariableElement var, PseudoBytecode tail, int i)`
`void`	`setMethod(NormalMethod m)`
`String`	`toString()`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

callerState

public ExecutionState callerState

the caller's state if this method is an inlinee

callee_cmid

public int callee_cmid

callee's compiled method id

meth

public NormalMethod meth

the method of which the execution state belongs to

bcIndex

public int bcIndex

the program pointer (bytecode index)

varElms

public LinkedList<VariableElement> varElms

runtime values of locals and stack expressions at the bytecode index Each element is an object of VariableElement.

thread

public RVMThread thread

the thread on which the activation is running

fpOffset

public Offset fpOffset

the offset of frame pointer of the activation.

tsFPOffset

public Offset tsFPOffset

the callee (threadSwitch)'s frame pointer of this activation.

cmid

public int cmid

the compiled method id of the activation (a Java method may have multiple version of compiled method

objs

private Object[] objs

objnum

private int objnum

rid

private int rid

maxStackHeight

private short maxStackHeight

Constructor Detail

ExecutionState

public ExecutionState(RVMThread whichThread,
                      Offset framePointerOffset,
                      int compiledMethodID,
                      int pc,
                      Offset tsFPOffset)

Initializer

Parameters:: whichThread -; framePointerOffset -; compiledMethodID -; pc -; tsFPOffset -

Method Detail

add

public void add(VariableElement elm)

add a VariableElement

addFirst

public void addFirst(VariableElement elm)

insert as the first element, for convinience.

getThread

public RVMThread getThread()

returns thread.

getFPOffset

public Offset getFPOffset()

setMethod

public void setMethod(NormalMethod m)

getMethod

public NormalMethod getMethod()

getTSFPOffset

public Offset getTSFPOffset()

printState

public void printState()

print the current state for debugging

generatePrologue

public byte[] generatePrologue()

Goes through variable elements and produces specialized prologue using pseudo-bytecode.

processElement

private PseudoBytecode processElement(VariableElement var,
                                      PseudoBytecode tail,
                                      int i)

getMaxStackHeight

public short getMaxStackHeight()

computeStackHeight

private int computeStackHeight(PseudoBytecode head)

adjustStackHeight

private static PseudoBytecode adjustStackHeight(PseudoBytecode last,
                                                int height)

paddingBytecode

private static int paddingBytecode(PseudoBytecode head)

Adds padding (NOP) at the beginning of pseudo bytecode to make the new bytecode size dividable by 4, then no branch target adjustment is needed in the original code.

Parameters:: head -
Returns:: the new bytecode size

generateBinaries

private static byte[] generateBinaries(PseudoBytecode bhead,
                                       int bsize)

toString

public String toString()

Overrides:: toString in class Object