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cfd22ad0 MD |
1 | /******************************************************************************* |
2 | * Copyright (c) 2012 Ericsson | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Mathieu Denis <mathieu.denis@polymtl.ca> - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.tmf.ui.viewers.statistics; | |
14 | ||
15 | import java.util.List; | |
16 | ||
17 | import org.eclipse.jface.viewers.TreeViewer; | |
18 | import org.eclipse.jface.viewers.TreeViewerColumn; | |
19 | import org.eclipse.jface.viewers.Viewer; | |
20 | import org.eclipse.jface.viewers.ViewerComparator; | |
21 | import org.eclipse.linuxtools.tmf.core.component.TmfComponent; | |
05627bda MD |
22 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; |
23 | import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp; | |
24 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; | |
25 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentRangeUpdatedSignal; | |
26 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentUpdatedSignal; | |
27 | import org.eclipse.linuxtools.tmf.core.signal.TmfRangeSynchSignal; | |
28 | import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler; | |
29 | import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace; | |
30 | import org.eclipse.linuxtools.tmf.core.trace.TmfExperiment; | |
31 | import org.eclipse.linuxtools.tmf.ui.viewers.TmfViewer; | |
cfd22ad0 MD |
32 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.AbsTmfStatisticsTree; |
33 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.ITmfColumnDataProvider; | |
34 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfBaseColumnData; | |
35 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfBaseColumnDataProvider; | |
36 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfBaseStatisticsTree; | |
37 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfStatisticsTreeNode; | |
38 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfStatisticsTreeRootFactory; | |
39 | import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfTreeContentProvider; | |
40 | import org.eclipse.swt.SWT; | |
41 | import org.eclipse.swt.events.SelectionAdapter; | |
42 | import org.eclipse.swt.events.SelectionEvent; | |
43 | import org.eclipse.swt.graphics.Color; | |
44 | import org.eclipse.swt.graphics.Cursor; | |
cfd22ad0 MD |
45 | import org.eclipse.swt.widgets.Composite; |
46 | import org.eclipse.swt.widgets.Control; | |
47 | import org.eclipse.swt.widgets.Display; | |
48 | import org.eclipse.swt.widgets.Event; | |
49 | import org.eclipse.swt.widgets.Listener; | |
50 | ||
51 | /** | |
52 | * A basic viewer to display statistics in the statistics view. | |
53 | * | |
54 | * @author Mathieu Denis | |
55 | * @version 2.0 | |
56 | * @since 2.0 | |
57 | */ | |
05627bda | 58 | public class TmfStatisticsViewer extends TmfViewer { |
cfd22ad0 MD |
59 | |
60 | /** | |
05627bda | 61 | * The initial window span (in nanoseconds) |
cfd22ad0 | 62 | */ |
05627bda MD |
63 | public static final long INITIAL_WINDOW_SPAN = (1L * 100 * 1000 * 1000); // .1sec |
64 | ||
65 | /** | |
66 | * Timestamp scale (nanosecond) | |
67 | */ | |
68 | public static final byte TIME_SCALE = -9; | |
69 | ||
70 | /** | |
71 | * Default PAGE_SIZE for background requests. | |
72 | */ | |
73 | protected static final int PAGE_SIZE = 50000; | |
74 | ||
75 | /** | |
76 | * Refresh frequency. | |
77 | */ | |
78 | protected final Long STATS_INPUT_CHANGED_REFRESH = 5000L; | |
79 | ||
80 | /** | |
81 | * Stores the request to the experiment | |
82 | */ | |
83 | protected TmfStatisticsRequest fRequest = null; | |
84 | ||
85 | /** | |
86 | * Stores the ranged request to the experiment | |
87 | */ | |
88 | protected TmfStatisticsRequest fRequestRange = null; | |
cfd22ad0 MD |
89 | |
90 | /** | |
91 | * The actual tree viewer to display | |
92 | */ | |
93 | protected TreeViewer fTreeViewer; | |
94 | ||
95 | /** | |
05627bda MD |
96 | * The statistics tree linked to this viewer |
97 | */ | |
98 | protected AbsTmfStatisticsTree fStatisticsData; | |
99 | ||
100 | /** | |
101 | * Update synchronization parameter (used for streaming): Update busy | |
102 | * indicator. | |
103 | */ | |
104 | protected boolean fStatisticsUpdateBusy = false; | |
105 | ||
106 | /** | |
107 | * Update synchronization parameter (used for streaming): Update pending | |
108 | * indicator. | |
109 | */ | |
110 | protected boolean fStatisticsUpdatePending = false; | |
111 | ||
112 | /** | |
113 | * Update synchronization parameter (used for streaming): Pending Update | |
114 | * time range. | |
115 | */ | |
116 | protected TmfTimeRange fStatisticsUpdateRange = null; | |
117 | ||
118 | /** | |
119 | * Update synchronization object. | |
120 | */ | |
121 | protected final Object fStatisticsUpdateSyncObj = new Object(); | |
122 | ||
123 | /** | |
124 | * Indicates to process all events | |
125 | */ | |
126 | private boolean fProcessAll; | |
127 | ||
128 | /** | |
129 | * View instance counter (for multiple statistics views) | |
cfd22ad0 MD |
130 | */ |
131 | private static int fCountInstance = 0; | |
132 | ||
133 | /** | |
134 | * Number of this instance. Used as an instance ID. | |
135 | */ | |
136 | private int fInstanceNb; | |
137 | ||
05627bda MD |
138 | /** |
139 | * The trace that is displayed by this viewer | |
140 | */ | |
141 | private ITmfTrace fTrace; | |
142 | ||
cfd22ad0 MD |
143 | /** |
144 | * Object to store the cursor while waiting for the experiment to load | |
145 | */ | |
146 | private Cursor fWaitCursor = null; | |
147 | ||
148 | /** | |
05627bda MD |
149 | * Counts the number of times waitCursor() has been called. It avoids |
150 | * removing the waiting cursor, since there may be multiple requests running | |
151 | * at the same time. | |
152 | */ | |
153 | private int fWaitCursorCount = 0; | |
154 | ||
155 | /** | |
156 | * Tells to send a time range request when the experiment gets updated. | |
157 | */ | |
158 | private boolean fSendRangeRequest = true; | |
159 | ||
160 | /** | |
161 | * Empty constructor. To be used in conjunction with | |
162 | * {@link TmfStatisticsViewer#init(Composite, String, ITmfTrace)} | |
163 | */ | |
164 | public TmfStatisticsViewer() { | |
165 | super(); | |
166 | } | |
167 | ||
168 | /** | |
169 | * Create a basic statistics viewer. To be used in conjunction with | |
170 | * {@link TmfStatisticsViewer#init(Composite, String, ITmfTrace)} | |
171 | * | |
172 | * @param parent | |
173 | * The parent composite that will hold the viewer | |
174 | * @param viewerName | |
175 | * The name that will be assigned to this viewer | |
176 | * @param trace | |
177 | * The trace that is displayed by this viewer | |
178 | * @see TmfComponent | |
179 | */ | |
180 | public TmfStatisticsViewer(Composite parent, String viewerName, ITmfTrace trace) { | |
181 | init(parent, viewerName, trace); | |
182 | } | |
183 | ||
184 | /** | |
185 | * Initialize the statistics viewer. | |
cfd22ad0 MD |
186 | * |
187 | * @param parent | |
05627bda MD |
188 | * The parent component of the viewer. |
189 | * @param viewerName | |
190 | * The name to give to the viewer. | |
191 | * @param trace | |
192 | * The trace that will be displayed by the viewer. | |
cfd22ad0 | 193 | */ |
05627bda MD |
194 | public void init(Composite parent, String viewerName, ITmfTrace trace) { |
195 | super.init(parent, viewerName); | |
cfd22ad0 MD |
196 | // Increment a counter to make sure the tree ID is unique. |
197 | fCountInstance++; | |
198 | fInstanceNb = fCountInstance; | |
05627bda MD |
199 | fTrace = trace; |
200 | ||
201 | // The viewer will process all events if he is assigned to the experiment | |
202 | fProcessAll = (trace instanceof TmfExperiment); | |
203 | ||
204 | initContent(parent); | |
205 | } | |
206 | ||
207 | /* | |
208 | * (non-Javadoc) | |
209 | * | |
210 | * @see org.eclipse.linuxtools.tmf.core.component.TmfComponent#dispose() | |
211 | */ | |
212 | @Override | |
213 | public void dispose() { | |
214 | super.dispose(); | |
215 | if (fWaitCursor != null) { | |
216 | fWaitCursor.dispose(); | |
217 | } | |
218 | /* | |
219 | * Make sure there is no request running before removing the statistics | |
220 | * tree | |
221 | */ | |
222 | cancelOngoingRequest(fRequestRange); | |
223 | cancelOngoingRequest(fRequest); | |
224 | } | |
225 | ||
226 | /** | |
227 | * Handles the signal about new experiment range. | |
228 | * | |
229 | * @param signal | |
230 | * The experiment range updated signal | |
231 | */ | |
232 | @TmfSignalHandler | |
233 | public void experimentRangeUpdated(TmfExperimentRangeUpdatedSignal signal) { | |
234 | TmfExperiment experiment = signal.getExperiment(); | |
235 | // validate | |
236 | if (!experiment.equals(TmfExperiment.getCurrentExperiment())) { | |
237 | return; | |
238 | } | |
239 | ||
240 | // Sends the time range request only once in this method. | |
241 | if (fSendRangeRequest) { | |
242 | fSendRangeRequest = false; | |
243 | // Calculate the selected time range to request | |
244 | long startTime = signal.getRange().getStartTime().normalize(0, TIME_SCALE).getValue(); | |
245 | TmfTimestamp startTS = new TmfTimestamp(startTime, TIME_SCALE); | |
246 | TmfTimestamp endTS = new TmfTimestamp(startTime + INITIAL_WINDOW_SPAN, TIME_SCALE); | |
247 | TmfTimeRange timeRange = new TmfTimeRange(startTS, endTS); | |
248 | ||
249 | requestTimeRangeData(experiment, timeRange); | |
250 | } | |
251 | requestData(experiment, signal.getRange()); | |
252 | } | |
253 | ||
254 | /** | |
255 | * Handles the experiment updated signal. This will detect new events in | |
256 | * case the indexing is not coalesced with a statistics request. | |
257 | * | |
258 | * @param signal | |
259 | * The experiment updated signal | |
260 | */ | |
261 | @TmfSignalHandler | |
262 | public void experimentUpdated(TmfExperimentUpdatedSignal signal) { | |
263 | TmfExperiment experiment = signal.getExperiment(); | |
264 | if (!experiment.equals(TmfExperiment.getCurrentExperiment())) { | |
265 | return; | |
266 | } | |
267 | ||
268 | long nbEvents = 0; | |
269 | if (fRequest != null) { | |
270 | nbEvents = fRequest.getLastEventIndex(); | |
271 | } | |
272 | /* | |
273 | * In the normal case, the statistics request is coalesced with indexing | |
274 | * and the number of events are the same, there is nothing to do. But if | |
275 | * it's not the case, trigger a new request to count the new events. | |
276 | */ | |
277 | if (nbEvents < experiment.getNbEvents()) { | |
278 | requestData(experiment, experiment.getTimeRange()); | |
279 | } | |
280 | } | |
281 | ||
282 | /** | |
283 | * * Handles the time range updated signal. It updates the time range | |
284 | * statistics. | |
285 | * | |
286 | * @param signal | |
287 | * Contains the information about the new selected time range. | |
288 | */ | |
289 | @TmfSignalHandler | |
290 | public void timeRangeUpdated(TmfRangeSynchSignal signal) { | |
291 | /* | |
292 | * It is possible that the time range changes while a request is | |
293 | * processing. | |
294 | */ | |
295 | cancelOngoingRequest(fRequestRange); | |
296 | ||
297 | requestTimeRangeData(TmfExperiment.getCurrentExperiment(), signal.getCurrentRange()); | |
298 | } | |
299 | ||
300 | /* | |
301 | * Returns the primary control associated with this viewer. | |
302 | * | |
303 | * @return the SWT control which displays this viewer's content | |
304 | */ | |
305 | @Override | |
306 | public Control getControl() { | |
307 | return fTreeViewer.getControl(); | |
308 | } | |
309 | ||
310 | /** | |
311 | * Get the input of the viewer. | |
312 | * | |
313 | * @return an object representing the input of the statistics viewer. | |
314 | */ | |
315 | public Object getInput() { | |
316 | return fTreeViewer.getInput(); | |
317 | } | |
318 | ||
319 | /** | |
320 | * Return the size of the request when performing background request. | |
321 | * | |
322 | * @return the block size for background request. | |
323 | */ | |
324 | public int getPageSize() { | |
325 | return PAGE_SIZE; | |
326 | } | |
327 | ||
328 | /** | |
329 | * Return the number of events to receive before a refresh of the viewer is | |
330 | * performed. | |
331 | * | |
332 | * @return the input refresh rate | |
333 | */ | |
334 | public long getRefreshRate() { | |
335 | return STATS_INPUT_CHANGED_REFRESH; | |
336 | } | |
337 | ||
338 | /** | |
339 | * This method can be overridden to implement another way of representing | |
340 | * the statistics data and to retrieve the information for display. | |
341 | * | |
342 | * @return a TmfStatisticsData object. | |
343 | */ | |
344 | public AbsTmfStatisticsTree getStatisticData() { | |
345 | if (fStatisticsData == null) { | |
346 | fStatisticsData = new TmfBaseStatisticsTree(); | |
347 | } | |
348 | return fStatisticsData; | |
349 | } | |
350 | ||
351 | /** | |
352 | * Returns a unique ID based on name to be associated with the statistics | |
353 | * tree for this viewer. For a same name, it will always return the same ID. | |
354 | * | |
355 | * @return a unique statistics tree ID. | |
356 | */ | |
357 | public String getTreeID() { | |
358 | return getName() + fInstanceNb; | |
359 | } | |
360 | ||
361 | @Override | |
362 | public void refresh() { | |
363 | final Control viewerControl = getControl(); | |
364 | // Ignore update if disposed | |
365 | if (viewerControl.isDisposed()) { | |
366 | return; | |
367 | } | |
368 | ||
369 | viewerControl.getDisplay().asyncExec(new Runnable() { | |
370 | @Override | |
371 | public void run() { | |
372 | if (!viewerControl.isDisposed()) { | |
373 | fTreeViewer.refresh(); | |
374 | } | |
375 | } | |
376 | }); | |
377 | } | |
378 | ||
379 | /** | |
380 | * Focus on the statistics tree of the viewer | |
381 | */ | |
382 | public void setFocus() { | |
383 | fTreeViewer.getTree().setFocus(); | |
384 | } | |
385 | ||
386 | /** | |
387 | * Sets or clears the input for this viewer. | |
388 | * | |
389 | * @param input | |
390 | * The input of this viewer, or <code>null</code> if none | |
391 | */ | |
392 | public void setInput(TmfStatisticsTreeNode input) { | |
393 | resetUpdateSynchronization(); | |
394 | fTreeViewer.setInput(input); | |
395 | } | |
396 | ||
397 | /** | |
398 | * Cancels the request if it is not already completed | |
399 | * | |
400 | * @param request | |
401 | * The request to be canceled | |
402 | */ | |
403 | protected void cancelOngoingRequest(ITmfDataRequest request) { | |
404 | if (request != null && !request.isCompleted()) { | |
405 | request.cancel(); | |
406 | } | |
407 | } | |
408 | ||
409 | /** | |
410 | * This method can be overridden to change the representation of the data in | |
411 | * the columns. | |
412 | * | |
413 | * @return an object implementing ITmfBaseColumnDataProvider. | |
414 | */ | |
415 | protected ITmfColumnDataProvider getColumnDataProvider() { | |
416 | return new TmfBaseColumnDataProvider(); | |
417 | } | |
cfd22ad0 | 418 | |
05627bda MD |
419 | /** |
420 | * Initialize the content that will be drawn in this viewer | |
421 | * | |
422 | * @param parent | |
423 | * The parent of the control to create | |
424 | */ | |
425 | protected void initContent(Composite parent) { | |
cfd22ad0 | 426 | final List<TmfBaseColumnData> columnDataList = getColumnDataProvider().getColumnData(); |
cfd22ad0 MD |
427 | |
428 | fTreeViewer = new TreeViewer(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); | |
429 | fTreeViewer.setContentProvider(new TmfTreeContentProvider()); | |
430 | fTreeViewer.getTree().setHeaderVisible(true); | |
431 | fTreeViewer.setUseHashlookup(true); | |
432 | ||
433 | // Creates the columns defined by the column data provider | |
434 | for (final TmfBaseColumnData columnData : columnDataList) { | |
435 | final TreeViewerColumn treeColumn = new TreeViewerColumn(fTreeViewer, columnData.getAlignment()); | |
436 | treeColumn.getColumn().setText(columnData.getHeader()); | |
437 | treeColumn.getColumn().setWidth(columnData.getWidth()); | |
438 | treeColumn.getColumn().setToolTipText(columnData.getTooltip()); | |
439 | ||
440 | if (columnData.getComparator() != null) { // A comparator is defined. | |
441 | // Adds a listener on the columns header for sorting purpose. | |
442 | treeColumn.getColumn().addSelectionListener(new SelectionAdapter() { | |
443 | ||
444 | private ViewerComparator reverseComparator; | |
445 | ||
446 | @Override | |
447 | public void widgetSelected(SelectionEvent e) { | |
448 | // Initializes the reverse comparator once. | |
449 | if (reverseComparator == null) { | |
450 | reverseComparator = new ViewerComparator() { | |
451 | @Override | |
452 | public int compare(Viewer viewer, Object e1, Object e2) { | |
453 | return -1 * columnData.getComparator().compare(viewer, e1, e2); | |
454 | } | |
455 | }; | |
456 | } | |
457 | ||
458 | if (fTreeViewer.getTree().getSortDirection() == SWT.UP | |
459 | || fTreeViewer.getTree().getSortColumn() != treeColumn.getColumn()) { | |
460 | /* | |
461 | * Puts the descendant order if the old order was | |
462 | * up or if the selected column has changed. | |
463 | */ | |
464 | fTreeViewer.setComparator(columnData.getComparator()); | |
465 | fTreeViewer.getTree().setSortDirection(SWT.DOWN); | |
466 | } else { | |
467 | /* | |
468 | * Puts the ascendant ordering if the selected | |
469 | * column hasn't changed. | |
470 | */ | |
471 | fTreeViewer.setComparator(reverseComparator); | |
472 | fTreeViewer.getTree().setSortDirection(SWT.UP); | |
473 | } | |
474 | fTreeViewer.getTree().setSortColumn(treeColumn.getColumn()); | |
475 | } | |
476 | }); | |
477 | } | |
478 | treeColumn.setLabelProvider(columnData.getLabelProvider()); | |
479 | } | |
480 | ||
481 | // Handler that will draw the bar charts. | |
482 | fTreeViewer.getTree().addListener(SWT.EraseItem, new Listener() { | |
483 | @Override | |
484 | public void handleEvent(Event event) { | |
485 | if (columnDataList.get(event.index).getPercentageProvider() != null) { | |
486 | TmfStatisticsTreeNode node = (TmfStatisticsTreeNode) event.item.getData(); | |
487 | ||
488 | double percentage = columnDataList.get(event.index).getPercentageProvider().getPercentage(node); | |
489 | if (percentage == 0) { // No bar to draw | |
490 | return; | |
491 | } | |
492 | ||
493 | if ((event.detail & SWT.SELECTED) > 0) { // The item is selected. | |
494 | // Draws our own background to avoid overwritten the bar. | |
495 | event.gc.fillRectangle(event.x, event.y, event.width, event.height); | |
496 | event.detail &= ~SWT.SELECTED; | |
497 | } | |
498 | ||
499 | int barWidth = (int) ((fTreeViewer.getTree().getColumn(event.index).getWidth() - 8) * percentage); | |
500 | int oldAlpha = event.gc.getAlpha(); | |
501 | Color oldForeground = event.gc.getForeground(); | |
502 | Color oldBackground = event.gc.getBackground(); | |
503 | /* | |
504 | * Draws a transparent gradient rectangle from the color of | |
505 | * foreground and background. | |
506 | */ | |
507 | event.gc.setAlpha(64); | |
508 | event.gc.setForeground(event.item.getDisplay().getSystemColor(SWT.COLOR_BLUE)); | |
509 | event.gc.setBackground(event.item.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND)); | |
510 | event.gc.fillGradientRectangle(event.x, event.y, barWidth, event.height, true); | |
511 | event.gc.drawRectangle(event.x, event.y, barWidth, event.height); | |
512 | // Restores old values | |
513 | event.gc.setForeground(oldForeground); | |
514 | event.gc.setBackground(oldBackground); | |
515 | event.gc.setAlpha(oldAlpha); | |
516 | event.detail &= ~SWT.BACKGROUND; | |
517 | } | |
518 | } | |
519 | }); | |
520 | ||
521 | // Initializes the comparator parameters | |
522 | fTreeViewer.setComparator(columnDataList.get(0).getComparator()); | |
523 | fTreeViewer.getTree().setSortColumn(fTreeViewer.getTree().getColumn(0)); | |
524 | fTreeViewer.getTree().setSortDirection(SWT.DOWN); | |
525 | } | |
526 | ||
527 | /** | |
05627bda | 528 | * Tells if the viewer is listening to a trace from the selected experiment. |
cfd22ad0 | 529 | * |
05627bda MD |
530 | * @param traceName |
531 | * The trace that the viewer may be listening | |
532 | * @return true if the viewer is listening to the trace, false otherwise | |
cfd22ad0 | 533 | */ |
05627bda MD |
534 | protected boolean isListeningTo(String traceName) { |
535 | if (fProcessAll || traceName.equals(fTrace.getName())) { | |
536 | return true; | |
cfd22ad0 | 537 | } |
05627bda | 538 | return false; |
cfd22ad0 MD |
539 | } |
540 | ||
541 | /** | |
05627bda | 542 | * Called when an experiment request has been completed successfully. |
cfd22ad0 | 543 | * |
05627bda MD |
544 | * @param global |
545 | * Tells if the request is a global or time range (partial) | |
546 | * request. | |
cfd22ad0 | 547 | */ |
05627bda MD |
548 | protected void modelComplete(boolean global) { |
549 | refresh(); | |
550 | waitCursor(false); | |
551 | if (global) { | |
552 | sendPendingUpdate(); | |
553 | } | |
cfd22ad0 MD |
554 | } |
555 | ||
556 | /** | |
05627bda | 557 | * Called when an experiment request has failed or has been cancelled. |
cfd22ad0 | 558 | * |
05627bda MD |
559 | * @param isGlobalRequest |
560 | * Tells if the request is a global or time range (partial) | |
561 | * request. | |
cfd22ad0 | 562 | */ |
05627bda MD |
563 | protected void modelIncomplete(boolean isGlobalRequest) { |
564 | if (isGlobalRequest) { // Clean the global statistics | |
565 | /* | |
566 | * The data is invalid and shall be removed to refresh upon next | |
567 | * selection | |
568 | */ | |
569 | Object input = getInput(); | |
570 | if (input instanceof TmfStatisticsTreeNode) { | |
571 | TmfStatisticsTreeRootFactory.removeStatTreeRoot(getTreeID()); | |
572 | } | |
573 | resetUpdateSynchronization(); | |
574 | sendPendingUpdate(); | |
575 | } else { // Clean the partial statistics | |
576 | resetTimeRangeValue(); | |
577 | } | |
578 | refresh(); | |
579 | waitCursor(false); | |
cfd22ad0 MD |
580 | } |
581 | ||
582 | /** | |
05627bda | 583 | * Sends the request to the experiment for the whole trace |
cfd22ad0 | 584 | * |
05627bda MD |
585 | * @param experiment |
586 | * The experiment used to send the request | |
587 | * @param range | |
588 | * The range to request to the experiment | |
cfd22ad0 | 589 | */ |
05627bda MD |
590 | protected void requestData(TmfExperiment experiment, TmfTimeRange range) { |
591 | // Check if an update is already ongoing | |
592 | if (checkUpdateBusy(range)) { | |
593 | return; | |
594 | } | |
595 | ||
596 | long index = 0; | |
597 | /* | |
598 | * Sets the index to the last event retrieved from the experiment during | |
599 | * the last request. | |
600 | */ | |
601 | if (fRequest != null) { | |
602 | index = fRequest.getLastEventIndex(); | |
603 | } | |
604 | ||
605 | fRequest = new TmfStatisticsRequest(this, range, index, true); | |
606 | waitCursor(true); | |
607 | experiment.sendRequest(fRequest); | |
cfd22ad0 MD |
608 | } |
609 | ||
610 | /** | |
05627bda | 611 | * Sends the time range request from the experiment |
cfd22ad0 | 612 | * |
05627bda MD |
613 | * @param experiment |
614 | * The experiment used to send the request | |
615 | * @param range | |
616 | * The range to request to the experiment | |
cfd22ad0 | 617 | */ |
05627bda MD |
618 | protected void requestTimeRangeData(TmfExperiment experiment, TmfTimeRange range) { |
619 | resetTimeRangeValue(); | |
620 | fRequestRange = new TmfStatisticsRequest(this, range, 0, false); | |
621 | waitCursor(true); | |
622 | experiment.sendRequest(fRequestRange); | |
cfd22ad0 MD |
623 | } |
624 | ||
625 | /** | |
05627bda | 626 | * Resets the number of events within the time range |
cfd22ad0 | 627 | */ |
05627bda MD |
628 | protected void resetTimeRangeValue() { |
629 | TmfStatisticsTreeNode treeModelRoot = TmfStatisticsTreeRootFactory.getStatTreeRoot(getTreeID()); | |
630 | if (treeModelRoot != null && treeModelRoot.hasChildren()) { | |
631 | treeModelRoot.resetTimeRangeValue(); | |
632 | } | |
cfd22ad0 MD |
633 | } |
634 | ||
635 | /** | |
636 | * When the experiment is loading the cursor will be different so the user | |
05627bda MD |
637 | * knows that the processing is not finished yet. |
638 | * | |
639 | * Calls to this method are stacked. | |
cfd22ad0 | 640 | * |
05627bda | 641 | * @param waitRequested |
cfd22ad0 | 642 | * Indicates if we need to show the waiting cursor, or the |
05627bda | 643 | * default one. |
cfd22ad0 | 644 | */ |
05627bda | 645 | protected void waitCursor(final boolean waitRequested) { |
cfd22ad0 MD |
646 | if ((fTreeViewer == null) || (fTreeViewer.getTree().isDisposed())) { |
647 | return; | |
648 | } | |
649 | ||
05627bda | 650 | boolean needsUpdate = false; |
cfd22ad0 | 651 | Display display = fTreeViewer.getControl().getDisplay(); |
05627bda MD |
652 | if (waitRequested) { |
653 | fWaitCursorCount++; | |
654 | if (fWaitCursor == null) { // The cursor hasn't been initialized yet | |
655 | fWaitCursor = new Cursor(display, SWT.CURSOR_WAIT); | |
656 | } | |
657 | if (fWaitCursorCount == 1) { // The cursor is not in waiting mode | |
658 | needsUpdate = true; | |
659 | } | |
660 | } else { | |
661 | if (fWaitCursorCount > 0) { // The cursor is in waiting mode | |
662 | fWaitCursorCount--; | |
663 | if (fWaitCursorCount == 0) { // No more reason to wait | |
664 | // Put back the default cursor | |
665 | needsUpdate = true; | |
666 | } | |
667 | } | |
cfd22ad0 MD |
668 | } |
669 | ||
05627bda MD |
670 | if (needsUpdate) { |
671 | // Performs the updates on the UI thread | |
672 | display.asyncExec(new Runnable() { | |
673 | @Override | |
674 | public void run() { | |
675 | if ((fTreeViewer != null) | |
676 | && (!fTreeViewer.getTree().isDisposed())) { | |
677 | Cursor cursor = null; // indicates default | |
678 | if (waitRequested) { | |
679 | cursor = fWaitCursor; | |
680 | } | |
681 | fTreeViewer.getControl().setCursor(cursor); | |
cfd22ad0 | 682 | } |
cfd22ad0 | 683 | } |
05627bda MD |
684 | }); |
685 | } | |
cfd22ad0 MD |
686 | } |
687 | ||
05627bda MD |
688 | // ------------------------------------------------------------------------ |
689 | // Methods reserved for the streaming functionality | |
690 | // ------------------------------------------------------------------------ | |
691 | ||
cfd22ad0 | 692 | /** |
05627bda | 693 | * Resets update synchronization information |
cfd22ad0 | 694 | */ |
05627bda MD |
695 | protected void resetUpdateSynchronization() { |
696 | synchronized (fStatisticsUpdateSyncObj) { | |
697 | fStatisticsUpdateBusy = false; | |
698 | fStatisticsUpdatePending = false; | |
699 | fStatisticsUpdateRange = null; | |
700 | } | |
cfd22ad0 MD |
701 | } |
702 | ||
703 | /** | |
05627bda MD |
704 | * Checks if statistics update is ongoing. If it is ongoing, the new time |
705 | * range is stored as pending | |
cfd22ad0 | 706 | * |
05627bda MD |
707 | * @param timeRange |
708 | * - new time range | |
709 | * @return true if statistic update is ongoing else false | |
cfd22ad0 | 710 | */ |
05627bda MD |
711 | protected boolean checkUpdateBusy(TmfTimeRange timeRange) { |
712 | synchronized (fStatisticsUpdateSyncObj) { | |
713 | if (fStatisticsUpdateBusy) { | |
714 | fStatisticsUpdatePending = true; | |
715 | if (fStatisticsUpdateRange == null | |
716 | || timeRange.getEndTime().compareTo(fStatisticsUpdateRange.getEndTime()) > 0) { | |
717 | fStatisticsUpdateRange = timeRange; | |
718 | } | |
719 | return true; | |
720 | } | |
721 | fStatisticsUpdateBusy = true; | |
722 | return false; | |
723 | } | |
724 | } | |
725 | ||
726 | /** | |
727 | * Sends pending request (if any) | |
728 | */ | |
729 | protected void sendPendingUpdate() { | |
730 | synchronized (fStatisticsUpdateSyncObj) { | |
731 | fStatisticsUpdateBusy = false; | |
732 | if (fStatisticsUpdatePending) { | |
733 | fStatisticsUpdatePending = false; | |
734 | requestData(TmfExperiment.getCurrentExperiment(), fStatisticsUpdateRange); | |
735 | fStatisticsUpdateRange = null; | |
736 | } | |
737 | } | |
cfd22ad0 MD |
738 | } |
739 | } |