Class MethodMetaData

java.lang.Object

com.ibm.j9ddr.vm29.j9.stackwalker.MethodMetaData

public class MethodMetaData
extends Object

Java-equivalent of MethodMetaData.c. Encapsulates the JIT-specific information required for stack walking. Note that in the C, there's typedef J9JITExceptionTablePointer J9TR_MethodMetaData. That alias isn't represented in the Java.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MethodMetaData.JITMaps	Class used to pass maps by reference to jitGetMapsFromPC.

Field Summary

Fields

Modifier and Type	Field	Description
static final long	BYTE_CODE_INFO_VALUE_FOR_GAP
static final long	REGISTER_MAP_VALUE_FOR_GAP

Constructor Summary

Constructors

Constructor	Description
MethodMetaData()

Method Summary

Modifier and Type	Method	Description
static UDATA	getCurrentByteCodeIndexAndIsSameReceiver(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, VoidPointer stackMap, VoidPointer currentInlinedCallSite, boolean[] isSameReceiver)
static VoidPointer	getFirstInlinedCallSite(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, VoidPointer stackMap)
static VoidPointer	getInlinedMethod(VoidPointer inlinedCallSite)
static UDATA	getJitDataResolvePushes()
static com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer	getJitGCStackAtlas(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer md)
static VoidPointer	getJitInlinedCallInfo(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer md)
static UDATA	getJitInlineDepthFromCallSite(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, VoidPointer inlinedCallSite)
static U8Pointer	getJitInternalPointerMap(com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer sa)
static U16	getJitNumberOfMapBytes(com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer sa)
static U16	getJitNumberOfParmSlots(com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer sa)
static int	getJitRecompilationResolvePushes()
static U32	getJitRegisterMap(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, VoidPointer stackMap)
static U8Pointer	getJitStackSlots(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer metaData, VoidPointer stackMap)
static int	getJitStaticMethodResolvePushes()
static I16	getJitTotalFrameSize(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer md)
static int	getJitVirtualMethodResolvePushes()
static U8	getNextDescriptionBit(U8Pointer jitDescriptionCursor)
static U8Pointer	getNextDescriptionCursor(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer metadata, VoidPointer stackMap, U8Pointer jitDescriptionCursor)
static VoidPointer	getNextInlinedCallSite(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, VoidPointer inlinedCallSite)
static UDATAPointer	getObjectArgScanCursor(WalkState walkState)
static UDATAPointer	getObjectTempScanCursor(WalkState walkState)
static VoidPointer	getStackAllocMapFromJitPC(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer javaVM, com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, UDATA jitPC, VoidPointer curStackMap)
static VoidPointer	getStackMapFromJitPC(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer javaVM, com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, UDATA jitPC)
static boolean	hasMoreInlinedMethods(VoidPointer inlinedCallSite)
static void	jitAddSpilledRegisters(WalkState walkState)
static void	jitAddSpilledRegisters(WalkState walkState, VoidPointer stackMap)
static void	jitAddSpilledRegistersForDataResolve(WalkState walkState)
static void	jitGetMapsFromPC(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer javaVM, com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData, UDATA jitPC, MethodMetaData.JITMaps maps)
static void	markClassesInInlineRanges(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer metaData, WalkState walkState)
static void	walkJITFrameSlotsForInternalPointers(WalkState walkState, U8Pointer jitDescriptionCursor, UDATAPointer scanCursor, VoidPointer stackMap, com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer gcStackAtlas)

Methods declared in class java.lang.Object

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

Field Details

REGISTER_MAP_VALUE_FOR_GAP

public static final long REGISTER_MAP_VALUE_FOR_GAP

See Also:

• Constant Field Values

BYTE_CODE_INFO_VALUE_FOR_GAP

public static final long BYTE_CODE_INFO_VALUE_FOR_GAP

See Also:

• Constant Field Values

Constructor Details

MethodMetaData

public MethodMetaData()

Method Details

getJitTotalFrameSize

public static I16 getJitTotalFrameSize(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer md)
                                throws CorruptDataException

Throws:

CorruptDataException

getJitInlinedCallInfo

public static VoidPointer getJitInlinedCallInfo(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer md)
                                         throws CorruptDataException

Throws:

CorruptDataException

jitAddSpilledRegistersForDataResolve

public static void jitAddSpilledRegistersForDataResolve(WalkState walkState)
                                                 throws CorruptDataException

Throws:

CorruptDataException

getJitDataResolvePushes

public static UDATA getJitDataResolvePushes()
                                     throws CorruptDataException

Throws:

CorruptDataException

getStackMapFromJitPC

public static VoidPointer getStackMapFromJitPC(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer javaVM,
 com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 UDATA jitPC)
                                        throws CorruptDataException

Throws:

CorruptDataException

getJitGCStackAtlas

public static com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer getJitGCStackAtlas(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer md)
                                                                                      throws CorruptDataException

Throws:

CorruptDataException

getFirstInlinedCallSite

public static VoidPointer getFirstInlinedCallSite(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 VoidPointer stackMap)
                                           throws CorruptDataException

Throws:

CorruptDataException

getJitInlineDepthFromCallSite

public static UDATA getJitInlineDepthFromCallSite(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 VoidPointer inlinedCallSite)
                                           throws CorruptDataException

Throws:

CorruptDataException

hasMoreInlinedMethods

public static boolean hasMoreInlinedMethods(VoidPointer inlinedCallSite)
                                     throws CorruptDataException

Throws:

CorruptDataException

getInlinedMethod

public static VoidPointer getInlinedMethod(VoidPointer inlinedCallSite)
                                    throws CorruptDataException

Throws:

CorruptDataException

getCurrentByteCodeIndexAndIsSameReceiver

public static UDATA getCurrentByteCodeIndexAndIsSameReceiver(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 VoidPointer stackMap,
 VoidPointer currentInlinedCallSite,
 boolean[] isSameReceiver)
                                                      throws CorruptDataException

Throws:

CorruptDataException

jitAddSpilledRegisters

public static void jitAddSpilledRegisters(WalkState walkState)
                                   throws CorruptDataException

Throws:

CorruptDataException

jitAddSpilledRegisters

public static void jitAddSpilledRegisters(WalkState walkState,
 VoidPointer stackMap)
                                   throws CorruptDataException

Throws:

CorruptDataException

getObjectArgScanCursor

public static UDATAPointer getObjectArgScanCursor(WalkState walkState)
                                           throws CorruptDataException

Throws:

CorruptDataException

getJitNumberOfMapBytes

public static U16 getJitNumberOfMapBytes(com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer sa)
                                  throws CorruptDataException

Throws:

CorruptDataException

getJitRegisterMap

public static U32 getJitRegisterMap(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 VoidPointer stackMap)
                             throws CorruptDataException

Throws:

CorruptDataException

getNextDescriptionCursor

public static U8Pointer getNextDescriptionCursor(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer metadata,
 VoidPointer stackMap,
 U8Pointer jitDescriptionCursor)
                                          throws CorruptDataException

Throws:

CorruptDataException

getJitNumberOfParmSlots

public static U16 getJitNumberOfParmSlots(com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer sa)
                                   throws CorruptDataException

Throws:

CorruptDataException

getJitInternalPointerMap

public static U8Pointer getJitInternalPointerMap(com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer sa)
                                          throws CorruptDataException

Throws:

CorruptDataException

walkJITFrameSlotsForInternalPointers

public static void walkJITFrameSlotsForInternalPointers(WalkState walkState,
 U8Pointer jitDescriptionCursor,
 UDATAPointer scanCursor,
 VoidPointer stackMap,
 com.ibm.j9ddr.vm29.pointer.generated.J9JITStackAtlasPointer gcStackAtlas)
                                                 throws CorruptDataException

Throws:

CorruptDataException

getNextInlinedCallSite

public static VoidPointer getNextInlinedCallSite(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 VoidPointer inlinedCallSite)
                                          throws CorruptDataException

Throws:

CorruptDataException

getNextDescriptionBit

public static U8 getNextDescriptionBit(U8Pointer jitDescriptionCursor)
                                throws CorruptDataException

Throws:

CorruptDataException

getObjectTempScanCursor

public static UDATAPointer getObjectTempScanCursor(WalkState walkState)
                                            throws CorruptDataException

Throws:

CorruptDataException

getJitRecompilationResolvePushes

public static int getJitRecompilationResolvePushes()

getJitVirtualMethodResolvePushes

public static int getJitVirtualMethodResolvePushes()

getJitStaticMethodResolvePushes

public static int getJitStaticMethodResolvePushes()

getStackAllocMapFromJitPC

public static VoidPointer getStackAllocMapFromJitPC(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer javaVM,
 com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 UDATA jitPC,
 VoidPointer curStackMap)
                                             throws CorruptDataException

Throws:

CorruptDataException

getJitStackSlots

public static U8Pointer getJitStackSlots(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer metaData,
 VoidPointer stackMap)
                                  throws CorruptDataException

Throws:

CorruptDataException

markClassesInInlineRanges

public static void markClassesInInlineRanges(com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer metaData,
 WalkState walkState)
                                      throws CorruptDataException

Throws:

CorruptDataException

jitGetMapsFromPC

public static void jitGetMapsFromPC(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer javaVM,
 com.ibm.j9ddr.vm29.pointer.generated.J9JITExceptionTablePointer methodMetaData,
 UDATA jitPC,
 MethodMetaData.JITMaps maps)
                             throws CorruptDataException

Throws:

CorruptDataException