83 @Override
84 public void threadStartEvent(ThreadStartEvent e) {
85 }
86
87 @Override
88 public void threadDeathEvent(ThreadDeathEvent e) {
89 }
90
91 @Override
92 public void classPrepareEvent(ClassPrepareEvent e) {
93 }
94
95 @Override
96 public void classUnloadEvent(ClassUnloadEvent e) {
97 }
98
99 @Override
100 public void breakpointEvent(BreakpointEvent be) {
101 Thread.yield(); // fetch output
102 MessageOutput.lnprint("Breakpoint hit:");
103 }
104
105 @Override
106 public void fieldWatchEvent(WatchpointEvent fwe) {
107 Field field = fwe.field();
108 ObjectReference obj = fwe.object();
109 Thread.yield(); // fetch output
110
111 if (fwe instanceof ModificationWatchpointEvent) {
112 MessageOutput.lnprint("Field access encountered before after",
113 new Object [] {field,
114 fwe.valueCurrent(),
115 ((ModificationWatchpointEvent)fwe).valueToBe()});
116 } else {
117 MessageOutput.lnprint("Field access encountered", field.toString());
118 }
119 }
120
121 @Override
122 public void stepEvent(StepEvent se) {
210 Thread.yield(); // fetch output
211 printCurrentLocation();
212 for (String cmd : monitorCommands) {
213 StringTokenizer t = new StringTokenizer(cmd);
214 t.nextToken(); // get rid of monitor number
215 executeCommand(t);
216 }
217 MessageOutput.printPrompt();
218 }
219
220 @Override
221 public void receivedEvent(Event event) {
222 }
223
224 private void printBaseLocation(String threadName, Location loc) {
225 MessageOutput.println("location",
226 new Object [] {threadName,
227 Commands.locationString(loc)});
228 }
229
230 private void printCurrentLocation() {
231 ThreadInfo threadInfo = ThreadInfo.getCurrentThreadInfo();
232 StackFrame frame;
233 try {
234 frame = threadInfo.getCurrentFrame();
235 } catch (IncompatibleThreadStateException exc) {
236 MessageOutput.println("<location unavailable>");
237 return;
238 }
239 if (frame == null) {
240 MessageOutput.println("No frames on the current call stack");
241 } else {
242 Location loc = frame.location();
243 printBaseLocation(threadInfo.getThread().name(), loc);
244 // Output the current source line, if possible
245 if (loc.lineNumber() != -1) {
246 String line;
247 try {
248 line = Env.sourceLine(loc, loc.lineNumber());
249 } catch (java.io.IOException e) {
250 line = null;
251 }
252 if (line != null) {
253 MessageOutput.println("source line number and line",
254 new Object [] {loc.lineNumber(),
255 line});
256 }
257 }
258 }
259 MessageOutput.println();
260 }
261
262 private void printLocationOfEvent(LocatableEvent theEvent) {
263 printBaseLocation(theEvent.thread().name(), theEvent.location());
264 }
265
266 void help() {
267 MessageOutput.println("zz help text");
268 }
269
270 private static final String[][] commandList = {
271 /*
272 * NOTE: this list must be kept sorted in ascending ASCII
273 * order by element [0]. Ref: isCommand() below.
274 *
275 *Command OK when OK when
276 * name disconnected? readonly?
277 *------------------------------------
278 */
279 {"!!", "n", "y"},
280 {"?", "y", "y"},
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83 @Override
84 public void threadStartEvent(ThreadStartEvent e) {
85 }
86
87 @Override
88 public void threadDeathEvent(ThreadDeathEvent e) {
89 }
90
91 @Override
92 public void classPrepareEvent(ClassPrepareEvent e) {
93 }
94
95 @Override
96 public void classUnloadEvent(ClassUnloadEvent e) {
97 }
98
99 @Override
100 public void breakpointEvent(BreakpointEvent be) {
101 Thread.yield(); // fetch output
102 MessageOutput.lnprint("Breakpoint hit:");
103 // Print breakpoint location and prompt if suspend policy is
104 // SUSPEND_NONE or SUSPEND_EVENT_THREAD. In case of SUSPEND_ALL
105 // policy this is handled by vmInterrupted() method.
106 int suspendPolicy = be.request().suspendPolicy();
107 switch (suspendPolicy) {
108 case EventRequest.SUSPEND_EVENT_THREAD:
109 case EventRequest.SUSPEND_NONE:
110 printBreakpointLocation(be);
111 MessageOutput.printPrompt();
112 break;
113 }
114 }
115
116 @Override
117 public void fieldWatchEvent(WatchpointEvent fwe) {
118 Field field = fwe.field();
119 ObjectReference obj = fwe.object();
120 Thread.yield(); // fetch output
121
122 if (fwe instanceof ModificationWatchpointEvent) {
123 MessageOutput.lnprint("Field access encountered before after",
124 new Object [] {field,
125 fwe.valueCurrent(),
126 ((ModificationWatchpointEvent)fwe).valueToBe()});
127 } else {
128 MessageOutput.lnprint("Field access encountered", field.toString());
129 }
130 }
131
132 @Override
133 public void stepEvent(StepEvent se) {
221 Thread.yield(); // fetch output
222 printCurrentLocation();
223 for (String cmd : monitorCommands) {
224 StringTokenizer t = new StringTokenizer(cmd);
225 t.nextToken(); // get rid of monitor number
226 executeCommand(t);
227 }
228 MessageOutput.printPrompt();
229 }
230
231 @Override
232 public void receivedEvent(Event event) {
233 }
234
235 private void printBaseLocation(String threadName, Location loc) {
236 MessageOutput.println("location",
237 new Object [] {threadName,
238 Commands.locationString(loc)});
239 }
240
241 private void printBreakpointLocation(BreakpointEvent be) {
242 printLocationWithSourceLine(be.thread().name(), be.location());
243 }
244
245 private void printCurrentLocation() {
246 ThreadInfo threadInfo = ThreadInfo.getCurrentThreadInfo();
247 StackFrame frame;
248 try {
249 frame = threadInfo.getCurrentFrame();
250 } catch (IncompatibleThreadStateException exc) {
251 MessageOutput.println("<location unavailable>");
252 return;
253 }
254 if (frame == null) {
255 MessageOutput.println("No frames on the current call stack");
256 } else {
257 printLocationWithSourceLine(threadInfo.getThread().name(), frame.location());
258 }
259 MessageOutput.println();
260 }
261
262 private void printLocationWithSourceLine(String threadName, Location loc) {
263 printBaseLocation(threadName, loc);
264 // Output the current source line, if possible
265 if (loc.lineNumber() != -1) {
266 String line;
267 try {
268 line = Env.sourceLine(loc, loc.lineNumber());
269 } catch (java.io.IOException e) {
270 line = null;
271 }
272 if (line != null) {
273 MessageOutput.println("source line number and line",
274 new Object [] {loc.lineNumber(),
275 line});
276 }
277 }
278 }
279
280 private void printLocationOfEvent(LocatableEvent theEvent) {
281 printBaseLocation(theEvent.thread().name(), theEvent.location());
282 }
283
284 void help() {
285 MessageOutput.println("zz help text");
286 }
287
288 private static final String[][] commandList = {
289 /*
290 * NOTE: this list must be kept sorted in ascending ASCII
291 * order by element [0]. Ref: isCommand() below.
292 *
293 *Command OK when OK when
294 * name disconnected? readonly?
295 *------------------------------------
296 */
297 {"!!", "n", "y"},
298 {"?", "y", "y"},
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