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1   /*
2    * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
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7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24   */
25  
26  /*
27   * This source code is provided to illustrate the usage of a given feature
28   * or technique and has been deliberately simplified. Additional steps
29   * required for a production-quality application, such as security checks,
30   * input validation and proper error handling, might not be present in
31   * this sample code.
32   */
33  
34  
35  package com.sun.tools.example.debug.bdi;
36  
37  import com.sun.jdi.*;
38  import com.sun.jdi.request.*;
39  
40  import java.util.*;
41  
42  class EventRequestSpecList {
43  
44      // all specs
45      private List<EventRequestSpec> eventRequestSpecs = Collections.synchronizedList(
46                                                    new ArrayList<EventRequestSpec>());
47  
48      final ExecutionManager runtime;
49  
50      EventRequestSpecList(ExecutionManager runtime) {
51          this.runtime = runtime;
52      }
53  
54      /**
55       * Resolve all deferred eventRequests waiting for 'refType'.
56       */
57      void resolve(ReferenceType refType) {
58          synchronized(eventRequestSpecs) {
59              for (EventRequestSpec spec : eventRequestSpecs) {
60                  spec.attemptResolve(refType);
61               }
62          }
63      }
64  
65      void install(EventRequestSpec ers, VirtualMachine vm) {
66          synchronized (eventRequestSpecs) {
67              eventRequestSpecs.add(ers);
68          }
69          if (vm != null) {
70              ers.attemptImmediateResolve(vm);
71          }
72      }
73  
74      BreakpointSpec
75      createClassLineBreakpoint(String classPattern, int line) {
76          ReferenceTypeSpec refSpec =
77              new PatternReferenceTypeSpec(classPattern);
78          return new LineBreakpointSpec(this, refSpec, line);
79      }
80  
81      BreakpointSpec
82      createSourceLineBreakpoint(String sourceName, int line) {
83          ReferenceTypeSpec refSpec =
84              new SourceNameReferenceTypeSpec(sourceName, line);
85          return new LineBreakpointSpec(this, refSpec, line);
86      }
87  
88      BreakpointSpec
89      createMethodBreakpoint(String classPattern,
90                             String methodId, List<String> methodArgs) {
91          ReferenceTypeSpec refSpec =
92              new PatternReferenceTypeSpec(classPattern);
93          return new MethodBreakpointSpec(this, refSpec,
94                                          methodId, methodArgs);
95      }
96  
97      ExceptionSpec
98      createExceptionIntercept(String classPattern,
99                               boolean notifyCaught,
100                              boolean notifyUncaught) {
101         ReferenceTypeSpec refSpec =
102             new PatternReferenceTypeSpec(classPattern);
103         return new ExceptionSpec(this, refSpec,
104                                  notifyCaught, notifyUncaught);
105     }
106 
107     AccessWatchpointSpec
108     createAccessWatchpoint(String classPattern, String fieldId) {
109         ReferenceTypeSpec refSpec =
110             new PatternReferenceTypeSpec(classPattern);
111         return new AccessWatchpointSpec(this, refSpec, fieldId);
112     }
113 
114     ModificationWatchpointSpec
115     createModificationWatchpoint(String classPattern, String fieldId) {
116         ReferenceTypeSpec refSpec =
117             new PatternReferenceTypeSpec(classPattern);
118         return new ModificationWatchpointSpec(this, refSpec, fieldId);
119     }
120 
121     void delete(EventRequestSpec ers) {
122         EventRequest request = ers.getEventRequest();
123         synchronized (eventRequestSpecs) {
124             eventRequestSpecs.remove(ers);
125         }
126         if (request != null) {
127             request.virtualMachine().eventRequestManager()
128                 .deleteEventRequest(request);
129         }
130         notifyDeleted(ers);
131         //### notify delete - here?
132     }
133 
134     List<EventRequestSpec> eventRequestSpecs() {
135         // We need to make a copy to avoid synchronization problems
136         synchronized (eventRequestSpecs) {
137             return new ArrayList<EventRequestSpec>(eventRequestSpecs);
138         }
139     }
140 
141     // --------  notify routines --------------------
142 
143     @SuppressWarnings("unchecked")
144     private Vector<SpecListener> specListeners() {
145         return (Vector<SpecListener>)runtime.specListeners.clone();
146     }
147 
148     void notifySet(EventRequestSpec spec) {
149         Vector<SpecListener> l = specListeners();
150         SpecEvent evt = new SpecEvent(spec);
151         for (int i = 0; i < l.size(); i++) {
152             spec.notifySet(l.elementAt(i), evt);
153         }
154     }
155 
156     void notifyDeferred(EventRequestSpec spec) {
157         Vector<SpecListener> l = specListeners();
158         SpecEvent evt = new SpecEvent(spec);
159         for (int i = 0; i < l.size(); i++) {
160             spec.notifyDeferred(l.elementAt(i), evt);
161         }
162     }
163 
164     void notifyDeleted(EventRequestSpec spec) {
165         Vector<SpecListener> l = specListeners();
166         SpecEvent evt = new SpecEvent(spec);
167         for (int i = 0; i < l.size(); i++) {
168             spec.notifyDeleted(l.elementAt(i), evt);
169         }
170     }
171 
172     void notifyResolved(EventRequestSpec spec) {
173         Vector<SpecListener> l = specListeners();
174         SpecEvent evt = new SpecEvent(spec);
175         for (int i = 0; i < l.size(); i++) {
176             spec.notifyResolved(l.elementAt(i), evt);
177         }
178     }
179 
180     void notifyError(EventRequestSpec spec, Exception exc) {
181         Vector<SpecListener> l = specListeners();
182         SpecErrorEvent evt = new SpecErrorEvent(spec, exc);
183         for (int i = 0; i < l.size(); i++) {
184             spec.notifyError(l.elementAt(i), evt);
185         }
186     }
187 }