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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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package com.oracle.svm.core.heap;

import org.graalvm.word.Pointer;

import com.oracle.svm.core.annotate.RestrictHeapAccess;

Visit an object reference. The visitObjectReference method takes a Pointer as a parameter, but
that Pointer is *not* a pointer to an Object, but a Pointer to an object reference.
/**
 * Visit an object reference. The visitObjectReference method takes a Pointer as a parameter, but
 * that Pointer is *not* a pointer to an Object, but a Pointer to an object reference.
 */
public interface ObjectReferenceVisitor {
    
Visit an Object reference.
To get the corresponding Object reference.readObject can be used.
Params:
objRef – The Object reference to be visited.
compressed – True if the reference is in compressed form, false otherwise.
Returns:
True if visiting should continue, false if visiting should stop./**
     * Visit an Object reference.
     *
     * To get the corresponding Object reference.readObject can be used.
     *
     * @param objRef The Object reference to be visited.
     * @param compressed True if the reference is in compressed form, false otherwise.
     * @return True if visiting should continue, false if visiting should stop.
     */
    @RestrictHeapAccess(access = RestrictHeapAccess.Access.UNRESTRICTED, overridesCallers = true, reason = "Some implementations allocate.")
    boolean visitObjectReference(Pointer objRef, boolean compressed);

    
Like visitObjectReference(Pointer), but always inlined for performance. /** Like visitObjectReference(Pointer), but always inlined for performance. */
    @RestrictHeapAccess(access = RestrictHeapAccess.Access.UNRESTRICTED, overridesCallers = true, reason = "Some implementations allocate.")
    default boolean visitObjectReferenceInline(Pointer objRef, boolean compressed) {
        return visitObjectReference(objRef, compressed);
    }

    @RestrictHeapAccess(access = RestrictHeapAccess.Access.UNRESTRICTED, overridesCallers = true, reason = "Some implementations allocate.")
    default boolean visitObjectReferenceInline(Pointer objRef, @SuppressWarnings("unused") int innerOffset, boolean compressed) {
        return visitObjectReference(objRef, compressed);
    }

    
Like visitObjectReference(Pointer), but always inlined for performance. /** Like visitObjectReference(Pointer), but always inlined for performance. */
    @RestrictHeapAccess(access = RestrictHeapAccess.Access.UNRESTRICTED, overridesCallers = true, reason = "Some implementations allocate.")
    default boolean visitObjectReferenceInline(Pointer objRef, boolean compressed, @SuppressWarnings("unused") Object holderObject) {
        return visitObjectReferenceInline(objRef, compressed);
    }

    @RestrictHeapAccess(access = RestrictHeapAccess.Access.UNRESTRICTED, overridesCallers = true, reason = "Some implementations allocate.")
    default boolean visitObjectReferenceInline(Pointer objRef, @SuppressWarnings("unused") int innerOffset, boolean compressed, @SuppressWarnings("unused") Object holderObject) {
        return visitObjectReferenceInline(objRef, innerOffset, compressed);
    }
}