com.oracle.svm.core.code

Interface CodeInfo

All Superinterfaces:

org.graalvm.word.ComparableWord, org.graalvm.word.PointerBase, UntetheredCodeInfo, org.graalvm.word.WordBase

public interface CodeInfo
extends UntetheredCodeInfo

A tethered CodeInfo object that can be accessed using the static methods on the class CodeInfoAccess. As long as the tether object is reachable, it is guaranteed that the GC won't free the CodeInfo object. For more details, refer to the documentation of CodeInfoAccess.

Field Summary

Fields

Modifier and Type	Field and Description
static int	STATE_CODE_CONSTANTS_LIVE Indicates that the code is fully installed from the GC point of view, i.e., the GC must visit the heap references that are directly embedded in the machine code.
static int	STATE_CREATED Initial state.
static int	STATE_NON_ENTRANT Indicates that the code can no longer be newly invoked, so that if there are no activations remaining, this CodeInfo object can be freed.
static int	STATE_PARTIALLY_FREED Indicates that this CodeInfo object was invalidated and parts of its data were freed.
static int	STATE_READY_FOR_INVALIDATION This state is only possible when the VM is at a safepoint.
static int	STATE_UNREACHABLE This state is only possible when the VM is at a safepoint and indicates that a partially freed CodeInfo object is no longer reachable from the GC point of view.

Method Summary

Methods inherited from interface org.graalvm.word.PointerBase

isNonNull, isNull

Methods inherited from interface org.graalvm.word.ComparableWord

equal, notEqual

Methods inherited from interface org.graalvm.word.WordBase

rawValue

Field Detail

STATE_CREATED

static final int STATE_CREATED

Initial state.

See Also:

Constant Field Values

STATE_CODE_CONSTANTS_LIVE

static final int STATE_CODE_CONSTANTS_LIVE

Indicates that the code is fully installed from the GC point of view, i.e., the GC must visit the heap references that are directly embedded in the machine code.

See Also:

CodeInfoAccess.isAliveState(int), Constant Field Values

STATE_NON_ENTRANT

static final int STATE_NON_ENTRANT

Indicates that the code can no longer be newly invoked, so that if there are no activations remaining, this CodeInfo object can be freed.

See Also:

CodeInfoAccess.isAliveState(int), Constant Field Values

STATE_READY_FOR_INVALIDATION

static final int STATE_READY_FOR_INVALIDATION

This state is only possible when the VM is at a safepoint. It indicates that the GC will invalidate and free this CodeInfo object during the current safepoint.

See Also:

Constant Field Values

STATE_PARTIALLY_FREED

static final int STATE_PARTIALLY_FREED

Indicates that this CodeInfo object was invalidated and parts of its data were freed.

See Also:

Constant Field Values

STATE_UNREACHABLE

static final int STATE_UNREACHABLE

This state is only possible when the VM is at a safepoint and indicates that a partially freed CodeInfo object is no longer reachable from the GC point of view. The GC will free the remaining data during the current safepoint.

See Also:

Constant Field Values