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1
19
20 package org.openide.filesystems;
21
22 import org.netbeans.junit.NbTestCase;
23 import org.openide.util.Lookup;
24
25
83 public class URLMapper50984Test extends NbTestCase {
84 public URLMapper50984Test(String  name) {
85 super(name);
86 }
87
88 protected void setUp() throws Exception {
89 System.setProperty("org.openide.util.Lookup", "org.openide.filesystems.URLMapper50984Test$Lkp");
90
91 super.setUp();
92
93 assertEquals ("Our lookup is registered", Lkp.class, org.openide.util.Lookup.getDefault().getClass());
94 }
95
96 public void testDeadlockInIssue50984 () throws Exception {
97 class DoubleEntry implements Runnable {
98 private org.openide.util.RequestProcessor RP = new org.openide.util.RequestProcessor ("Deadlock processor");
99 public Exception e;
100
101 public void run () {
102 try {
103 if (!RP.isRequestProcessorThread ()) {
104 RP.post (this);
105 synchronized (this) {
106 wait (200);
107 }
108 } else {
109 QueryingPair.beBroken = true;
110 Lookup.getDefault ().lookup (QueryingPair.class);
111 }
112 } catch (Exception ex) {
113 this.e = ex;
114 }
115 }
116
117 public void closeToLookup () throws Exception {
118 java.net.URL url = new java.net.URL ("http://www.netbeans.org");
119 URLMapper.findFileObject(url);
120 synchronized (this) {
121 notifyAll ();
122 }
123 }
124 }
125
126 DoubleEntry d = new DoubleEntry ();
127 Lkp.runnable = d;
128 d.closeToLookup ();
129
130 if (d.e != null) {
131 throw d.e;
132 }
133 }
134
135 private static final class MyUM extends URLMapper {
136 public static java.net.URL queried;
137
138 public org.openide.filesystems.FileObject[] getFileObjects(java.net.URL url) {
139 queried = url;
140 return null;
141 }
142
143 public java.net.URL getURL(org.openide.filesystems.FileObject fo, int type) {
144 return null;
145 }
146 }
147
148
150 @SuppressWarnings ("unchecked")
151 private static class QueryingPair extends org.openide.util.lookup.AbstractLookup.Pair {
152 public static boolean beBroken;
153
154 public java.lang.String getId() {
155 return getType ().toString();
156 }
157
158 public java.lang.String getDisplayName() {
159 return getId ();
160 }
161
162 public java.lang.Class getType() {
163 return getClass ();
164 }
165
166 protected boolean creatorOf(java.lang.Object obj) {
167 return obj == this;
168 }
169
170 protected boolean instanceOf(java.lang.Class c) {
171 if (beBroken) {
172 beBroken = false;
173 try {
174 assertNull ("is still null", MyUM.queried);
175 java.net.URL url = new java.net.URL ("http://www.netbeans.org");
176 URLMapper.findFileObject(url);
177 fail("Lookup is not reentrant so this line should never be called.");
178 } catch (java.net.MalformedURLException ex) {
179 ex.printStackTrace();
180 fail ("No exceptions: " + ex.getMessage ());
181 }
182 }
183 return c.isAssignableFrom(getType ());
184 }
185
186 public java.lang.Object getInstance() {
187 return this;
188 }
189 }
190
191
192
193 public static final class Lkp extends org.openide.util.lookup.AbstractLookup {
194 private static org.openide.util.lookup.InstanceContent ic;
195 static volatile Runnable runnable;
196
197 public Lkp () {
198 this (new org.openide.util.lookup.InstanceContent ());
199 }
200
201 private Lkp (org.openide.util.lookup.InstanceContent ic) {
202 super (ic);
203 this.ic = ic;
204 }
205
206 protected void initialize() {
207 for (int i = 0; i < 1000; i++) {
211 ic.add (new Integer (i));
212 }
213
214 QueryingPair qp = new QueryingPair();
215 ic.addPair (qp);
216 ic.add (new MyUM ());
217 }
218
219 protected void beforeLookup (org.openide.util.Lookup.Template template) {
220 Runnable r = runnable;
221 runnable = null;
222 if (r != null) {
223 r.run ();
224 }
225 super.beforeLookup(template);
226 }
227
228 } }
230 |
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