OnStackReplacementPlan (Jikes RVM API)

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org.jikesrvm.adaptive
Class OnStackReplacementPlan

java.lang.Object
  org.jikesrvm.adaptive.OnStackReplacementPlan

All Implemented Interfaces:: Constants, HeapLayoutConstants, ThinLockConstants, TIBLayoutConstants, SizeConstants

public class OnStackReplacementPlan
extends Object
implements Constants
extends Object
implements Constants

A OSR_ControllerOnStackReplacementPlan is scheduled by ControllerThread, and executed by the RecompilationThread.

It has the suspended thread whose activation being replaced, and a compilation plan.

The execution of this plan compiles the method, installs the new code, and reschedule the thread.

Field Summary
`private int`	`CMID`
`private CompilationPlan`	`compPlan`
`private byte`	`status` Status is write-only at the moment, but I suspect it comes in handy for debugging -- RJG
`private RVMThread`	`suspendedThread`
`private int`	`timeCompleted`
`private int`	`timeInitiated`
`private Offset`	`tsFromFPoff`
`private Offset`	`ypTakenFPoff`

Fields inherited from interface org.jikesrvm.Constants
`NOT_REACHED, REFLECTION_FPRS_BITS, REFLECTION_FPRS_MASK, REFLECTION_GPRS_BITS, REFLECTION_GPRS_MASK`

Fields inherited from interface org.jikesrvm.objectmodel.ThinLockConstants
`TL_DEDICATED_U16_OFFSET, TL_DEDICATED_U16_SHIFT, TL_LOCK_COUNT_MASK, TL_LOCK_COUNT_SHIFT, TL_LOCK_COUNT_UNIT, TL_LOCK_ID_MASK, TL_LOCK_ID_SHIFT, TL_NUM_BITS_RC, TL_NUM_BITS_STAT, TL_NUM_BITS_TID, TL_STAT_BIASABLE, TL_STAT_FAT, TL_STAT_MASK, TL_STAT_SHIFT, TL_STAT_THIN, TL_THREAD_ID_MASK, TL_THREAD_ID_SHIFT, TL_UNLOCK_MASK`

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.objectmodel.TIBLayoutConstants
`IMT_METHOD_SLOTS, NEEDS_DYNAMIC_LINK, TIB_ARRAY_ELEMENT_TIB_INDEX, TIB_DOES_IMPLEMENT_INDEX, TIB_FIRST_SPECIALIZED_METHOD_INDEX, TIB_FIRST_VIRTUAL_METHOD_INDEX, TIB_INTERFACE_DISPATCH_TABLE_INDEX, TIB_SUPERCLASS_IDS_INDEX, TIB_TYPE_INDEX`

Fields inherited from interface org.jikesrvm.HeapLayoutConstants
`BAD_MAP_COMPRESSION, BOOT_IMAGE_CODE_END, BOOT_IMAGE_CODE_SIZE, BOOT_IMAGE_CODE_START, BOOT_IMAGE_DATA_END, BOOT_IMAGE_DATA_SIZE, BOOT_IMAGE_DATA_START, BOOT_IMAGE_END, BOOT_IMAGE_RMAP_END, BOOT_IMAGE_RMAP_START, MAX_BOOT_IMAGE_RMAP_SIZE, MAXIMUM_MAPPABLE`

Constructor Summary
`OnStackReplacementPlan(RVMThread thread, CompilationPlan cp, int cmid, int source, Offset tsoff, Offset ypoff, double priority)`

Method Summary
`void`	`execute()`
`int`	`getTimeCompleted()`
`int`	`getTimeInitiated()`
`void`	`setStatus(byte newStatus)`
`void`	`setTimeCompleted(int t)`
`void`	`setTimeInitiated(int t)`

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

Field Detail

CMID

private final int CMID

tsFromFPoff

private final Offset tsFromFPoff

ypTakenFPoff

private final Offset ypTakenFPoff

status

private byte status

Status is write-only at the moment, but I suspect it comes in handy for debugging -- RJG

suspendedThread

private final RVMThread suspendedThread

compPlan

private final CompilationPlan compPlan

timeInitiated

private int timeInitiated

timeCompleted

private int timeCompleted

Constructor Detail

OnStackReplacementPlan

public OnStackReplacementPlan(RVMThread thread,
                              CompilationPlan cp,
                              int cmid,
                              int source,
                              Offset tsoff,
                              Offset ypoff,
                              double priority)

Method Detail

getTimeInitiated

public int getTimeInitiated()

setTimeInitiated

public void setTimeInitiated(int t)

getTimeCompleted

public int getTimeCompleted()

setTimeCompleted

public void setTimeCompleted(int t)

setStatus

public void setStatus(byte newStatus)

execute

public void execute()