com.oracle.svm.core.code

Class FrameInfoDecoder

java.lang.Object

com.oracle.svm.core.code.FrameInfoDecoder

public class FrameInfoDecoder
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FrameInfoDecoder.FrameInfoQueryResultAllocator
static interface	FrameInfoDecoder.ValueInfoAllocator

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	BCI_SHIFT
protected static int	COMPRESSED_FRAME_POINTER_ADDEND Value added to source line to guarantee the value is greater than zero.
protected static int	COMPRESSED_SOURCE_LINE_ADDEND Value added to source line to guarantee the value is greater than zero.
protected static int	COMPRESSED_UNIQUE_SUCCESSOR_ADDEND Value subtracted from the negated method name index when there is a unique shared frame successor to guarantee the value is less than zero.
protected static int	DURING_CALL_MASK
protected static int	IS_COMPRESSED_REFERENCE_BITS
protected static int	IS_COMPRESSED_REFERENCE_MASK_IN_PLACE
protected static int	IS_COMPRESSED_REFERENCE_SHIFT
protected static int	IS_ELIMINATED_MONITOR_KIND_VALUE Value not used by JavaKind as a marker for eliminated monitors.
protected static int	KIND_BITS
protected static int	KIND_MASK_IN_PLACE
protected static int	KIND_SHIFT
protected static jdk.vm.ci.meta.JavaKind[]	KIND_VALUES
protected static int	NO_CALLER_BCI
protected static int	NO_LOCAL_INFO_BCI
protected static int	RETHROW_EXCEPTION_MASK
protected static int	TYPE_BITS
protected static int	TYPE_MASK_IN_PLACE
protected static int	TYPE_SHIFT
protected static int	UNCOMPRESSED_FRAME_SLICE_MARKER Differentiates between compressed and uncompressed frame slices.

Constructor Summary

Constructors

Constructor and Description
FrameInfoDecoder()

Method Summary

Modifier and Type	Method and Description
protected static int	decodeBci(long encodedBci)
protected static boolean	decodeDuringCall(long encodedBci)
protected static FrameInfoQueryResult	decodeFrameInfo(boolean isDeoptEntry, org.graalvm.compiler.core.common.util.TypeReader readBuffer, CodeInfo info, FrameInfoDecoder.FrameInfoQueryResultAllocator resultAllocator, FrameInfoDecoder.ValueInfoAllocator valueInfoAllocator)
protected static FrameInfoQueryResult	decodeFrameInfo(boolean isDeoptEntry, org.graalvm.compiler.core.common.util.TypeReader readBuffer, CodeInfo info, FrameInfoDecoder.FrameInfoQueryResultAllocator resultAllocator, FrameInfoDecoder.ValueInfoAllocator valueInfoAllocator, CodeInfoAccess.FrameInfoState state)
protected static boolean	decodeRethrowException(long encodedBci)
protected static boolean	encodeSourceReferences()
protected static boolean	isFrameInfoMatch(long frameInfoIndex, NonmovableArray<Byte> frameInfoEncodings, long searchEncodedBci)
static void	logReadableBci(Log log, long encodedBci)
static String	readableBci(long encodedBci)

Methods inherited from class java.lang.Object

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

Field Detail

BCI_SHIFT

protected static final int BCI_SHIFT

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Constant Field Values

DURING_CALL_MASK

protected static final int DURING_CALL_MASK

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Constant Field Values

RETHROW_EXCEPTION_MASK

protected static final int RETHROW_EXCEPTION_MASK

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Constant Field Values

NO_CALLER_BCI

protected static final int NO_CALLER_BCI

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Constant Field Values

NO_LOCAL_INFO_BCI

protected static final int NO_LOCAL_INFO_BCI

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Constant Field Values

UNCOMPRESSED_FRAME_SLICE_MARKER

protected static final int UNCOMPRESSED_FRAME_SLICE_MARKER

Differentiates between compressed and uncompressed frame slices. See CompressedFrameDecoderHelper#isCompressedFrameSlice(int) for more information.

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Constant Field Values

COMPRESSED_FRAME_POINTER_ADDEND

protected static final int COMPRESSED_FRAME_POINTER_ADDEND

Value added to source line to guarantee the value is greater than zero.

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Constant Field Values

COMPRESSED_UNIQUE_SUCCESSOR_ADDEND

protected static final int COMPRESSED_UNIQUE_SUCCESSOR_ADDEND

Value subtracted from the negated method name index when there is a unique shared frame successor to guarantee the value is less than zero.

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Constant Field Values

COMPRESSED_SOURCE_LINE_ADDEND

protected static final int COMPRESSED_SOURCE_LINE_ADDEND

Value added to source line to guarantee the value is greater than zero.

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Constant Field Values

TYPE_BITS

protected static final int TYPE_BITS

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Constant Field Values

TYPE_SHIFT

protected static final int TYPE_SHIFT

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Constant Field Values

TYPE_MASK_IN_PLACE

protected static final int TYPE_MASK_IN_PLACE

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Constant Field Values

KIND_BITS

protected static final int KIND_BITS

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Constant Field Values

KIND_SHIFT

protected static final int KIND_SHIFT

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Constant Field Values

KIND_MASK_IN_PLACE

protected static final int KIND_MASK_IN_PLACE

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Constant Field Values

IS_ELIMINATED_MONITOR_KIND_VALUE

protected static final int IS_ELIMINATED_MONITOR_KIND_VALUE

Value not used by JavaKind as a marker for eliminated monitors. The kind of a monitor is always JavaKind.Object.

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Constant Field Values

IS_COMPRESSED_REFERENCE_BITS

protected static final int IS_COMPRESSED_REFERENCE_BITS

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Constant Field Values

IS_COMPRESSED_REFERENCE_SHIFT

protected static final int IS_COMPRESSED_REFERENCE_SHIFT

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Constant Field Values

IS_COMPRESSED_REFERENCE_MASK_IN_PLACE

protected static final int IS_COMPRESSED_REFERENCE_MASK_IN_PLACE

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Constant Field Values

KIND_VALUES

protected static final jdk.vm.ci.meta.JavaKind[] KIND_VALUES

Constructor Detail

FrameInfoDecoder

public FrameInfoDecoder()

Method Detail

isFrameInfoMatch

protected static boolean isFrameInfoMatch(long frameInfoIndex,
                                          NonmovableArray<Byte> frameInfoEncodings,
                                          long searchEncodedBci)

decodeFrameInfo

protected static FrameInfoQueryResult decodeFrameInfo(boolean isDeoptEntry,
                                                      org.graalvm.compiler.core.common.util.TypeReader readBuffer,
                                                      CodeInfo info,
                                                      FrameInfoDecoder.FrameInfoQueryResultAllocator resultAllocator,
                                                      FrameInfoDecoder.ValueInfoAllocator valueInfoAllocator)

decodeFrameInfo

protected static FrameInfoQueryResult decodeFrameInfo(boolean isDeoptEntry,
                                                      org.graalvm.compiler.core.common.util.TypeReader readBuffer,
                                                      CodeInfo info,
                                                      FrameInfoDecoder.FrameInfoQueryResultAllocator resultAllocator,
                                                      FrameInfoDecoder.ValueInfoAllocator valueInfoAllocator,
                                                      CodeInfoAccess.FrameInfoState state)

encodeSourceReferences

protected static boolean encodeSourceReferences()

decodeBci

protected static int decodeBci(long encodedBci)

decodeDuringCall

protected static boolean decodeDuringCall(long encodedBci)

decodeRethrowException

protected static boolean decodeRethrowException(long encodedBci)

readableBci

public static String readableBci(long encodedBci)

logReadableBci

public static void logReadableBci(Log log,
                                  long encodedBci)