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package org.graalvm.compiler.nodes.memory;

Encapsulates properties of a node describing how it accesses the heap.
/** * Encapsulates properties of a node describing how it accesses the heap. */
public interface HeapAccess {
The types of (write/read) barriers attached to stores.
/** * The types of (write/read) barriers attached to stores. */
enum BarrierType {
Primitive access which do not necessitate barriers.
/** * Primitive access which do not necessitate barriers. */
NONE,
Array object access.
/** * Array object access. */
ARRAY,
Field object access.
/** * Field object access. */
FIELD,
Unknown (aka field or array) object access.
/** * Unknown (aka field or array) object access. */
UNKNOWN,
Weak field access (e.g. Hotspot's Reference.referent field).
/** * Weak field access (e.g. Hotspot's Reference.referent field). */
WEAK_FIELD,
An access which requires a dynamic check for Weak field access (e.g. Hotspot's Reference.referent field).
/** * An access which requires a dynamic check for Weak field access (e.g. Hotspot's * Reference.referent field). */
MAYBE_WEAK_FIELD }
Gets the write barrier type for that particular access.
/** * Gets the write barrier type for that particular access. */
BarrierType getBarrierType(); }