149 // blindly and screen out all the duplicates at once.
150 }
151
152 void addReferenceFromRoot(Root r) {
153 getClazz().addReferenceFromRoot(r, this);
154 }
155
156 /**
157 * If the rootset includes this object, return a Root describing one
158 * of the reasons why.
159 */
160 public Root getRoot() {
161 return getClazz().getRoot(this);
162 }
163
164 /**
165 * Tell who refers to us.
166 *
167 * @return an Enumeration of JavaHeapObject instances
168 */
169 public Enumeration getReferers() {
170 if (referersLen != -1) {
171 throw new RuntimeException("not resolved: " + getIdString());
172 }
173 return new Enumeration() {
174
175 private int num = 0;
176
177 public boolean hasMoreElements() {
178 return referers != null && num < referers.length;
179 }
180
181 public Object nextElement() {
182 return referers[num++];
183 }
184 };
185 }
186
187 /**
188 * Given other, which the caller promises is in referers, determines if
189 * the reference is only a weak reference.
190 */
191 public boolean refersOnlyWeaklyTo(Snapshot ss, JavaThing other) {
192 return false;
193 }
194
195 /**
196 * Describe the reference that this thing has to target. This will only
197 * be called if target is in the array returned by getChildrenForRootset.
198 */
199 public String describeReferenceTo(JavaThing target, Snapshot ss) {
200 return "??";
201 }
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149 // blindly and screen out all the duplicates at once.
150 }
151
152 void addReferenceFromRoot(Root r) {
153 getClazz().addReferenceFromRoot(r, this);
154 }
155
156 /**
157 * If the rootset includes this object, return a Root describing one
158 * of the reasons why.
159 */
160 public Root getRoot() {
161 return getClazz().getRoot(this);
162 }
163
164 /**
165 * Tell who refers to us.
166 *
167 * @return an Enumeration of JavaHeapObject instances
168 */
169 public Enumeration<JavaThing> getReferers() {
170 if (referersLen != -1) {
171 throw new RuntimeException("not resolved: " + getIdString());
172 }
173 return new Enumeration<JavaThing>() {
174
175 private int num = 0;
176
177 public boolean hasMoreElements() {
178 return referers != null && num < referers.length;
179 }
180
181 public JavaThing nextElement() {
182 return referers[num++];
183 }
184 };
185 }
186
187 /**
188 * Given other, which the caller promises is in referers, determines if
189 * the reference is only a weak reference.
190 */
191 public boolean refersOnlyWeaklyTo(Snapshot ss, JavaThing other) {
192 return false;
193 }
194
195 /**
196 * Describe the reference that this thing has to target. This will only
197 * be called if target is in the array returned by getChildrenForRootset.
198 */
199 public String describeReferenceTo(JavaThing target, Snapshot ss) {
200 return "??";
201 }
|