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1
11 package org.eclipse.jdt.internal.debug.ui.monitors;
12
13
14 import java.util.ArrayList  ;
15 import java.util.HashMap ;
16 import java.util.List ;
17 import java.util.Map ;
18
19 import org.eclipse.jdt.debug.core.IJavaObject;
20 import org.eclipse.jdt.debug.core.IJavaThread;
21 import org.eclipse.jface.viewers.ITreeContentProvider;
22 import org.eclipse.jface.viewers.Viewer;
23
24
27 public class DeadLocksViewContentProvider implements ITreeContentProvider {
28
29 Object [] fRoots= null;
30
31
38 public class ContentThreadWrapper {
39 public IJavaThread fThread;
40 public Object fParent= null;
41 public boolean caughtInADeadLock;
42 public Object fChild= null;
43
44 protected ContentThreadWrapper(IJavaThread thread, Object parent) {
45 fThread= thread;
46 fParent= parent;
47 }
48
49
52 public boolean equals(Object obj) {
53 if (!(obj instanceof ContentThreadWrapper)) {
54 return false;
55 }
56 ContentThreadWrapper other= (ContentThreadWrapper)obj;
57
58 return other.fThread.equals(fThread);
59 }
60
61
64 public int hashCode() {
65 return fThread.hashCode();
66 }
67
68 }
69
70
73 public class ContentMonitorWrapper {
74 public IJavaObject fMonitor;
75 public Object fParent= null;
76 public Object fChild= null;
77
78 protected ContentMonitorWrapper(IJavaObject monitor, Object parent) {
79 fMonitor= monitor;
80 fParent= parent;
81 }
82
83
86 public boolean equals(Object obj) {
87 if (!(obj instanceof ContentMonitorWrapper)) {
88 return false;
89 }
90 ContentMonitorWrapper other= (ContentMonitorWrapper)obj;
91
92 return other.fMonitor.equals(fMonitor);
93 }
94
95
98 public int hashCode() {
99 return fMonitor.hashCode();
100 }
101 }
102
103
106 public Object [] getChildren(Object parentElement) {
107 Object object= null;
108 if (parentElement instanceof ContentThreadWrapper) {
109 object= ((ContentThreadWrapper)parentElement).fChild;
110 } else if (parentElement instanceof ContentMonitorWrapper) {
111 object= ((ContentMonitorWrapper)parentElement).fChild;
112 }
113 if (object != null) {
114 return new Object []{object};
115 }
116 return null;
117 }
118
119
122 public Object getParent(Object element) {
123 if (element instanceof ContentThreadWrapper) {
124 return ((ContentThreadWrapper)element).fParent;
125 } else if (element instanceof ContentMonitorWrapper) {
126 return ((ContentMonitorWrapper)element).fParent;
127 }
128
129 return null;
130 }
131
132
135 public boolean hasChildren(Object element) {
136
137 if (element instanceof ContentThreadWrapper) {
138 return ((ContentThreadWrapper)element).fChild != null;
139 } else if (element instanceof ContentMonitorWrapper) {
140 return ((ContentMonitorWrapper)element).fChild != null;
141 }
142
143 return false;
144 }
145
146
149 public Object [] getElements(Object inputElement) {
150 if (fRoots == null) {
151 MonitorManager manager= (MonitorManager) inputElement;
152 int numDeadLocks= manager.getNumberOfDeadlocks();
153 fRoots= new Object [numDeadLocks];
155
156 for (int i = 0; i < numDeadLocks; i++) {
157 ContentThreadWrapper rootWrapper = new ContentThreadWrapper(manager.getStartThread(i), null);
159 List deadlockList = manager.getDeadlockList(i);
160 Map tree= new HashMap (deadlockList.size());
161 tree.put(rootWrapper, rootWrapper);
162 buildDeadlockTree(rootWrapper, tree, rootWrapper, deadlockList);
163 fRoots[i] = rootWrapper;
164 }
165 }
166 return fRoots;
167 }
168
169 protected void buildDeadlockTree(ContentThreadWrapper ctw, Map tree, Object parent, List deadlockList) {
170 Object next;
171 Object object;
172 Object inTree;
173 List childFinder= new ArrayList (deadlockList.size());
174 for (int j= 1; j < deadlockList.size(); j++) {
175 next= deadlockList.get(j);
176
177 if (next instanceof IJavaObject) {
178 object= new ContentMonitorWrapper((IJavaObject)next, parent);
179 } else {
180 object= new ContentThreadWrapper((IJavaThread)next, parent);
181 }
182 if (j == 1) {
183 ctw.fChild= object;
184 }
185 inTree= tree.get(object);
186 if (inTree instanceof ContentThreadWrapper) {
187 ((ContentThreadWrapper)inTree).caughtInADeadLock= true;
188 ((ContentThreadWrapper)object).caughtInADeadLock= true;
189 } else if (inTree == null){
190 tree.put(object, object);
191 }
192 parent= object;
193 childFinder.add(object);
194 }
195
196 for (int j = 0; j < childFinder.size() - 1; j++) {
197 Object element = childFinder.get(j);
198 if (element instanceof ContentMonitorWrapper) {
199 ((ContentMonitorWrapper)element).fChild= childFinder.get(j+1);
200 } else {
201 ((ContentThreadWrapper)element).fChild= childFinder.get(j+1);
202 }
203 }
204 }
205
206
209 public void dispose() {
210 MonitorManager.getDefault().removeDeadlockUpdateListener();
211 }
212
213
216 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
217 MonitorManager.getDefault().addDeadlockUpdateListener(this);
218 }
219
220 protected void clearDeadlockInformation() {
221 fRoots= null;
222 }
223 }
224 |
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