/
RCZero.java
40 lines (35 loc) · 1.06 KB
/
RCZero.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Common Public License (CPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/cpl1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.mmtk.plan.refcount;
import org.mmtk.plan.TransitiveClosure;
import org.vmmagic.pragma.*;
import org.vmmagic.unboxed.*;
/**
* This class is the fundamental mechanism for performing a
* transitive closure over an object graph.<p>
*
* @see org.mmtk.plan.TraceLocal
*/
@Uninterruptible
public final class RCZero extends TransitiveClosure {
/**
* Trace an edge during GC.
*
* @param source The source of the reference.
* @param slot The location containing the object reference.
*/
@Inline
public void processEdge(ObjectReference source, Address slot) {
slot.store(ObjectReference.nullReference());
}
}