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1 | /******************************************************************************* |
2 | * Copyright (c) 2011 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) - Generalized version based on LTTng | |
11 | * Bernd Hufmann - Updated to use trace reference in TmfEvent and streaming | |
12 | *******************************************************************************/ | |
13 | ||
14 | package org.eclipse.linuxtools.tmf.ui.views.statistics; | |
15 | ||
16 | import java.util.Vector; | |
17 | ||
18 | import org.eclipse.jface.viewers.TreeViewer; | |
19 | import org.eclipse.jface.viewers.TreeViewerColumn; | |
20 | import org.eclipse.jface.viewers.Viewer; | |
21 | import org.eclipse.jface.viewers.ViewerComparator; | |
6c13869b FC |
22 | import org.eclipse.linuxtools.tmf.core.event.TmfEvent; |
23 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; | |
24 | import org.eclipse.linuxtools.tmf.core.experiment.TmfExperiment; | |
25 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest; | |
26 | import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest; | |
27 | import org.eclipse.linuxtools.tmf.core.request.TmfDataRequest; | |
28 | import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest; | |
29 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType; | |
30 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentDisposedSignal; | |
31 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentRangeUpdatedSignal; | |
32 | import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentSelectedSignal; | |
33 | import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler; | |
34 | import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace; | |
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35 | import org.eclipse.linuxtools.tmf.ui.views.TmfView; |
36 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.AbsTmfStatisticsTree; | |
37 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.ITmfColumnDataProvider; | |
38 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfBaseColumnData; | |
39 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfBaseColumnDataProvider; | |
40 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfBaseStatisticsTree; | |
41 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfStatisticsTreeNode; | |
42 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfStatisticsTreeRootFactory; | |
43 | import org.eclipse.linuxtools.tmf.ui.views.statistics.model.TmfTreeContentProvider; | |
44 | import org.eclipse.swt.SWT; | |
45 | import org.eclipse.swt.events.SelectionAdapter; | |
46 | import org.eclipse.swt.events.SelectionEvent; | |
47 | import org.eclipse.swt.graphics.Color; | |
48 | import org.eclipse.swt.graphics.Cursor; | |
49 | import org.eclipse.swt.layout.FillLayout; | |
50 | import org.eclipse.swt.widgets.Composite; | |
51 | import org.eclipse.swt.widgets.Display; | |
52 | import org.eclipse.swt.widgets.Event; | |
53 | import org.eclipse.swt.widgets.Listener; | |
54 | ||
55 | /** | |
56 | * <b><u>TmfStatisticsView</u></b> | |
57 | * <p> | |
58 | * The generic Statistics View displays statistics for any kind of traces. | |
59 | * | |
60 | * It is implemented according to the MVC pattern. - The model is a TmfStatisticsTreeNode built by the State Manager. - The view is built with a | |
61 | * TreeViewer. - The controller that keeps model and view synchronized is an observer of the model. | |
62 | * </p> | |
63 | */ | |
64 | public class TmfStatisticsView extends TmfView { | |
65 | /** | |
66 | * The ID correspond to the package in which this class is embedded | |
67 | */ | |
68 | public static final String ID = "org.eclipse.linuxtools.tmf.ui.views.statistics"; //$NON-NLS-1$ | |
69 | ||
70 | // view name | |
66711dc8 | 71 | public static final String TMF_STATISTICS_VIEW = "StatisticsView"; //$NON-NLS-1$ |
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72 | |
73 | // Refresh frequency | |
74 | protected static final Long STATS_INPUT_CHANGED_REFRESH = 5000L; | |
75 | ||
76 | // Default PAGE_SIZE | |
77 | protected static final int PAGE_SIZE = 50000; // For background request | |
78 | ||
79 | // The actual tree to display | |
80 | protected TreeViewer fTreeViewer; | |
81 | // Stores the request to the experiment | |
82 | protected ITmfEventRequest<TmfEvent> fRequest = null; | |
83 | ||
84 | // Update synchronization parameters (used for streaming) | |
85 | protected boolean fStatisticsUpdateBusy = false; | |
86 | protected boolean fStatisticsUpdatePending = false; | |
87 | protected TmfTimeRange fStatisticsUpdateRange = null; | |
88 | protected final Object fStatisticsUpdateSyncObj = new Object(); | |
89 | ||
90 | // Object to store the cursor while waiting for the experiment to load | |
91 | private Cursor fWaitCursor = null; | |
92 | ||
93 | // Stores the number of instance | |
94 | private static int fCountInstance = 0; | |
95 | ||
96 | // Number of this instance. Used as an instance ID | |
97 | private int fInstanceNb; | |
98 | ||
99 | /** | |
100 | * Constructor of a statistics view. | |
101 | * | |
102 | * @param viewName | |
103 | * The name to give to the view. | |
104 | */ | |
105 | public TmfStatisticsView(String viewName) { | |
106 | super(viewName); | |
107 | fCountInstance++; | |
108 | fInstanceNb = fCountInstance; | |
109 | } | |
110 | ||
111 | /** | |
112 | * Default constructor. | |
113 | */ | |
114 | public TmfStatisticsView() { | |
115 | this(TMF_STATISTICS_VIEW); | |
116 | } | |
117 | ||
118 | /* | |
119 | * (non-Javadoc) | |
120 | * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite) | |
121 | */ | |
122 | @Override | |
123 | public void createPartControl(Composite parent) { | |
124 | final Vector<TmfBaseColumnData> columnDataList = getColumnDataProvider().getColumnData(); | |
125 | parent.setLayout(new FillLayout()); | |
126 | ||
127 | fTreeViewer = new TreeViewer(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); | |
128 | fTreeViewer.setContentProvider(new TmfTreeContentProvider()); | |
129 | fTreeViewer.getTree().setHeaderVisible(true); | |
130 | fTreeViewer.setUseHashlookup(true); | |
131 | ||
132 | for (final TmfBaseColumnData columnData : columnDataList) { | |
133 | final TreeViewerColumn treeColumn = new TreeViewerColumn(fTreeViewer, columnData.getAlignment()); | |
134 | treeColumn.getColumn().setText(columnData.getHeader()); | |
135 | treeColumn.getColumn().setWidth(columnData.getWidth()); | |
136 | treeColumn.getColumn().setToolTipText(columnData.getTooltip()); | |
137 | ||
138 | if (columnData.getComparator() != null) { | |
139 | treeColumn.getColumn().addSelectionListener(new SelectionAdapter() { | |
140 | @Override | |
141 | public void widgetSelected(SelectionEvent e) { | |
142 | if (fTreeViewer.getTree().getSortDirection() == SWT.UP || fTreeViewer.getTree().getSortColumn() != treeColumn.getColumn()) { | |
143 | fTreeViewer.setComparator(columnData.getComparator()); | |
144 | fTreeViewer.getTree().setSortDirection(SWT.DOWN); | |
145 | } else { | |
146 | fTreeViewer.setComparator(new ViewerComparator() { | |
147 | @Override | |
148 | public int compare(Viewer viewer, Object e1, Object e2) { | |
149 | return -1 * columnData.getComparator().compare(viewer, e1, e2); | |
150 | } | |
151 | }); | |
152 | fTreeViewer.getTree().setSortDirection(SWT.UP); | |
153 | } | |
154 | fTreeViewer.getTree().setSortColumn(treeColumn.getColumn()); | |
155 | } | |
156 | }); | |
157 | } | |
158 | treeColumn.setLabelProvider(columnData.getLabelProvider()); | |
159 | } | |
160 | ||
161 | // Handler that will draw the bar charts. | |
162 | fTreeViewer.getTree().addListener(SWT.EraseItem, new Listener() { | |
163 | @Override | |
164 | public void handleEvent(Event event) { | |
165 | if (columnDataList.get(event.index).getPercentageProvider() != null) { | |
166 | TmfStatisticsTreeNode node = (TmfStatisticsTreeNode) event.item.getData(); | |
167 | ||
168 | double percentage = columnDataList.get(event.index).getPercentageProvider().getPercentage(node); | |
169 | if (percentage == 0) { | |
170 | return; | |
171 | } | |
172 | ||
173 | if ((event.detail & SWT.SELECTED) > 0) { | |
174 | Color oldForeground = event.gc.getForeground(); | |
175 | event.gc.setForeground(event.item.getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION)); | |
176 | event.gc.fillRectangle(event.x, event.y, event.width, event.height); | |
177 | event.gc.setForeground(oldForeground); | |
178 | event.detail &= ~SWT.SELECTED; | |
179 | } | |
180 | ||
181 | int barWidth = (int) ((fTreeViewer.getTree().getColumn(1).getWidth() - 8) * percentage); | |
182 | int oldAlpha = event.gc.getAlpha(); | |
183 | Color oldForeground = event.gc.getForeground(); | |
184 | Color oldBackground = event.gc.getBackground(); | |
185 | event.gc.setAlpha(64); | |
186 | event.gc.setForeground(event.item.getDisplay().getSystemColor(SWT.COLOR_BLUE)); | |
187 | event.gc.setBackground(event.item.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND)); | |
188 | event.gc.fillGradientRectangle(event.x, event.y, barWidth, event.height, true); | |
189 | event.gc.drawRectangle(event.x, event.y, barWidth, event.height); | |
190 | event.gc.setForeground(oldForeground); | |
191 | event.gc.setBackground(oldBackground); | |
192 | event.gc.setAlpha(oldAlpha); | |
193 | event.detail &= ~SWT.BACKGROUND; | |
194 | } | |
195 | } | |
196 | }); | |
197 | ||
198 | fTreeViewer.setComparator(columnDataList.get(0).getComparator()); | |
199 | fTreeViewer.getTree().setSortColumn(fTreeViewer.getTree().getColumn(0)); | |
200 | fTreeViewer.getTree().setSortDirection(SWT.DOWN); | |
201 | ||
202 | // Read current data if any available | |
203 | TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment(); | |
204 | if (experiment != null) { | |
205 | // Insert the statistics data into the tree | |
206 | @SuppressWarnings({ "rawtypes", "unchecked" }) | |
207 | TmfExperimentSelectedSignal<?> signal = new TmfExperimentSelectedSignal(this, experiment); | |
208 | experimentSelected(signal); | |
209 | } | |
210 | } | |
211 | ||
212 | /* | |
213 | * (non-Javadoc) | |
214 | * @see org.eclipse.linuxtools.tmf.ui.views.TmfView#dispose() | |
215 | */ | |
216 | @Override | |
217 | public void dispose() { | |
218 | super.dispose(); | |
219 | if (fWaitCursor != null) { | |
220 | fWaitCursor.dispose(); | |
221 | } | |
222 | ||
223 | // clean the model | |
224 | TmfStatisticsTreeRootFactory.removeAll(); | |
225 | } | |
226 | ||
227 | /* | |
228 | * (non-Javadoc) | |
229 | * @see org.eclipse.ui.part.WorkbenchPart#setFocus() | |
230 | */ | |
231 | @Override | |
232 | public void setFocus() { | |
233 | fTreeViewer.getTree().setFocus(); | |
234 | } | |
235 | ||
236 | /** | |
237 | * Refresh the view. | |
238 | */ | |
239 | public void modelInputChanged(boolean complete) { | |
240 | // Ignore update if disposed | |
241 | if (fTreeViewer.getTree().isDisposed()) | |
242 | return; | |
243 | ||
244 | fTreeViewer.getTree().getDisplay().asyncExec(new Runnable() { | |
245 | @Override | |
246 | public void run() { | |
247 | if (!fTreeViewer.getTree().isDisposed()) | |
248 | fTreeViewer.refresh(); | |
249 | } | |
250 | }); | |
251 | ||
252 | if (complete) { | |
253 | sendPendingUpdate(); | |
254 | } | |
255 | } | |
256 | ||
257 | /** | |
258 | * Called when an experiment request has failed or has been canceled Remove the data retrieved from the experiment from the statistics tree. | |
259 | * | |
260 | * @param name | |
261 | * the experiment name | |
262 | */ | |
263 | public void modelIncomplete(String name) { | |
264 | Object input = fTreeViewer.getInput(); | |
265 | if (input != null && input instanceof TmfStatisticsTreeNode) { | |
266 | // The data from this experiment is invalid and shall be removed to | |
267 | // refresh upon next selection | |
268 | TmfStatisticsTreeRootFactory.removeStatTreeRoot(getTreeID(name)); | |
269 | ||
270 | // Reset synchronization information | |
271 | resetUpdateSynchronization(); | |
272 | modelInputChanged(false); | |
273 | } | |
274 | waitCursor(false); | |
275 | } | |
276 | ||
277 | /** | |
278 | * If the user choose another experiment, the current must be disposed. | |
279 | * | |
280 | * @param signal | |
281 | */ | |
282 | @TmfSignalHandler | |
283 | public void experimentDisposed(TmfExperimentDisposedSignal<? extends TmfEvent> signal) { | |
284 | cancelOngoingRequest(); | |
285 | } | |
286 | ||
287 | /** | |
288 | * Handler called when an experiment is selected. Checks if the experiment has changed and requests the selected experiment if it has not yet been | |
289 | * cached. | |
290 | * | |
291 | * @param signal | |
292 | * contains the information about the selection. | |
293 | */ | |
294 | @TmfSignalHandler | |
295 | public void experimentSelected(TmfExperimentSelectedSignal<? extends TmfEvent> signal) { | |
296 | if (signal != null) { | |
297 | TmfExperiment<?> experiment = signal.getExperiment(); | |
298 | String experimentName = experiment.getName(); | |
299 | ||
300 | if (TmfStatisticsTreeRootFactory.containsTreeRoot(getTreeID(experimentName))) { | |
301 | // The experiment root is already present | |
302 | TmfStatisticsTreeNode experimentTreeNode = TmfStatisticsTreeRootFactory.getStatTreeRoot(getTreeID(experimentName)); | |
303 | ||
66711dc8 | 304 | @SuppressWarnings("rawtypes") |
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305 | ITmfTrace[] traces = experiment.getTraces(); |
306 | ||
307 | // check if there is partial data loaded in the experiment | |
308 | int numTraces = experiment.getTraces().length; | |
309 | int numNodeTraces = experimentTreeNode.getNbChildren(); | |
310 | ||
311 | if (numTraces == numNodeTraces) { | |
312 | boolean same = true; | |
313 | // Detect if the experiment contains the same traces as when | |
314 | // previously selected | |
315 | for (int i = 0; i < numTraces; i++) { | |
316 | String traceName = traces[i].getName(); | |
317 | if (!experimentTreeNode.containsChild(traceName)) { | |
318 | same = false; | |
319 | break; | |
320 | } | |
321 | } | |
322 | ||
323 | if (same) { | |
324 | // no need to reload data, all traces are already loaded | |
325 | fTreeViewer.setInput(experimentTreeNode); | |
326 | ||
327 | resetUpdateSynchronization(); | |
328 | ||
329 | return; | |
330 | } | |
331 | experimentTreeNode.reset(); | |
332 | } | |
333 | } else { | |
334 | TmfStatisticsTreeRootFactory.addStatsTreeRoot(getTreeID(experimentName), getStatisticData()); | |
335 | } | |
336 | ||
337 | resetUpdateSynchronization(); | |
338 | ||
339 | TmfStatisticsTreeNode treeModelRoot = TmfStatisticsTreeRootFactory.getStatTreeRoot(getTreeID(experiment.getName())); | |
340 | ||
341 | // if the model has contents, clear to start over | |
342 | if (treeModelRoot.hasChildren()) { | |
343 | treeModelRoot.reset(); | |
344 | } | |
345 | ||
346 | // set input to a clean data model | |
347 | fTreeViewer.setInput(treeModelRoot); | |
348 | ||
349 | // if the data is not available or has changed, reload it | |
350 | requestData(experiment, experiment.getTimeRange()); | |
351 | } | |
352 | } | |
353 | ||
354 | /** | |
355 | * @param signal | |
356 | */ | |
357 | @SuppressWarnings("unchecked") | |
358 | @TmfSignalHandler | |
359 | public void experimentRangeUpdated(TmfExperimentRangeUpdatedSignal signal) { | |
360 | TmfExperiment<TmfEvent> experiment = (TmfExperiment<TmfEvent>) signal.getExperiment(); | |
361 | // validate | |
362 | if (! experiment.equals(TmfExperiment.getCurrentExperiment())) { | |
363 | return; | |
364 | } | |
365 | ||
366 | requestData(experiment, signal.getRange()); | |
367 | } | |
368 | ||
369 | ||
370 | /** | |
371 | * Return the size of the request when performing background request. | |
372 | * | |
373 | * @return the block size for background request. | |
374 | */ | |
375 | protected int getIndexPageSize() { | |
376 | return PAGE_SIZE; | |
377 | } | |
378 | ||
379 | /** | |
380 | * | |
381 | * @return the quantity of data to retrieve before a refresh of the view is performed. | |
382 | */ | |
383 | protected long getInputChangedRefresh() { | |
384 | return STATS_INPUT_CHANGED_REFRESH; | |
385 | } | |
386 | ||
387 | /** | |
388 | * This method can be overridden to implement another way to represent the statistics data and to retrieve the information for display. | |
389 | * | |
390 | * @return a TmfStatisticsData object. | |
391 | */ | |
392 | protected AbsTmfStatisticsTree getStatisticData() { | |
393 | return new TmfBaseStatisticsTree(); | |
394 | } | |
395 | ||
396 | /** | |
397 | * This method can be overridden to change the representation of the data in the columns. | |
398 | * | |
399 | * @return an object implementing ITmfBaseColumnDataProvider. | |
400 | */ | |
401 | protected ITmfColumnDataProvider getColumnDataProvider() { | |
402 | return new TmfBaseColumnDataProvider(); | |
403 | } | |
404 | ||
405 | /** | |
406 | * Construct the ID based on the experiment name | |
407 | * @param experimentName the name of the trace name to show in the view | |
408 | * @return a view ID | |
409 | */ | |
410 | protected String getTreeID(String experimentName) { | |
411 | return experimentName + fInstanceNb; | |
412 | } | |
413 | ||
414 | /** | |
415 | * When the experiment is loading the cursor will be different so the user know the processing is not finished yet. | |
416 | * | |
417 | * @param waitInd | |
418 | * indicates if we need to show the waiting cursor, or the default one | |
419 | */ | |
420 | protected void waitCursor(final boolean waitInd) { | |
421 | if ((fTreeViewer == null) || (fTreeViewer.getTree().isDisposed())) { | |
422 | return; | |
423 | } | |
424 | ||
425 | Display display = fTreeViewer.getControl().getDisplay(); | |
426 | if (fWaitCursor == null) { | |
427 | fWaitCursor = new Cursor(display, SWT.CURSOR_WAIT); | |
428 | } | |
429 | ||
430 | // Perform the updates on the UI thread | |
431 | display.asyncExec(new Runnable() { | |
432 | @Override | |
433 | public void run() { | |
434 | if ((fTreeViewer != null) && (!fTreeViewer.getTree().isDisposed())) { | |
435 | Cursor cursor = null; /* indicates default */ | |
436 | if (waitInd) { | |
437 | cursor = fWaitCursor; | |
438 | } | |
439 | fTreeViewer.getControl().setCursor(cursor); | |
440 | } | |
441 | } | |
442 | }); | |
443 | } | |
444 | ||
445 | /** | |
446 | * Perform the request for an experiment and populates the statistics tree with event. | |
447 | * @param experiment experiment for which we need the statistics data. | |
448 | * @param time range to request | |
449 | */ | |
450 | @SuppressWarnings("unchecked") | |
451 | protected void requestData(final TmfExperiment<?> experiment, TmfTimeRange timeRange) { | |
452 | if (experiment != null) { | |
453 | ||
454 | // Check if update is already ongoing | |
455 | if (checkUpdateBusy(timeRange)) { | |
456 | return; | |
457 | } | |
458 | ||
459 | int index = 0; | |
460 | for (TmfStatisticsTreeNode node : ((TmfStatisticsTreeNode) fTreeViewer.getInput()).getChildren()) { | |
461 | index += (int) node.getValue().nbEvents; | |
462 | } | |
463 | ||
464 | // Preparation of the event request | |
465 | fRequest = new TmfEventRequest<TmfEvent>(TmfEvent.class, timeRange, index, TmfDataRequest.ALL_DATA, getIndexPageSize(), ExecutionType.BACKGROUND) { | |
466 | ||
467 | @Override | |
468 | public void handleData(TmfEvent data) { | |
469 | super.handleData(data); | |
470 | if (data != null) { | |
471 | AbsTmfStatisticsTree statisticsData = TmfStatisticsTreeRootFactory.getStatTree(getTreeID(experiment.getName())); | |
472 | ||
473 | final String traceName = data.getParentTrace().getName(); | |
474 | ITmfExtraEventInfo extraInfo = new ITmfExtraEventInfo() { | |
475 | @Override | |
476 | public String getTraceName() { | |
477 | if (traceName == null) { | |
478 | return Messages.TmfStatisticsView_UnknownTraceName; | |
479 | } | |
480 | return traceName; | |
481 | } | |
482 | }; | |
483 | statisticsData.registerEvent(data, extraInfo); | |
484 | statisticsData.increase(data, extraInfo, 1); | |
485 | // Refresh View | |
486 | if ((getNbRead() % getInputChangedRefresh()) == 0) { | |
487 | modelInputChanged(false); | |
488 | } | |
489 | } | |
490 | } | |
491 | ||
492 | @Override | |
493 | public void handleSuccess() { | |
494 | super.handleSuccess(); | |
495 | modelInputChanged(true); | |
496 | waitCursor(false); | |
497 | } | |
498 | ||
499 | @Override | |
500 | public void handleFailure() { | |
501 | super.handleFailure(); | |
502 | modelIncomplete(experiment.getName()); | |
503 | } | |
504 | ||
505 | @Override | |
506 | public void handleCancel() { | |
507 | super.handleCancel(); | |
508 | modelIncomplete(experiment.getName()); | |
509 | } | |
510 | }; | |
511 | ((TmfExperiment<TmfEvent>) experiment).sendRequest((ITmfDataRequest<TmfEvent>) fRequest); | |
512 | waitCursor(true); | |
513 | } | |
514 | } | |
515 | ||
516 | /** | |
517 | * Cancels the current ongoing request | |
518 | */ | |
519 | protected void cancelOngoingRequest() { | |
520 | if (fRequest != null && !fRequest.isCompleted()) { | |
521 | fRequest.cancel(); | |
522 | } | |
523 | } | |
524 | ||
525 | /** | |
526 | * Reset update synchronization information | |
527 | */ | |
528 | protected void resetUpdateSynchronization() { | |
529 | synchronized (fStatisticsUpdateSyncObj) { | |
530 | fStatisticsUpdateBusy = false; | |
531 | fStatisticsUpdatePending = false; | |
532 | } | |
533 | } | |
534 | ||
535 | /** | |
536 | * Checks if statistic update is ongoing. If it is ongoing the new time range is stored as pending | |
537 | * | |
538 | * @param timeRange - new time range | |
539 | * @return true if statistic update is ongoing else false | |
540 | */ | |
541 | protected boolean checkUpdateBusy(TmfTimeRange timeRange) { | |
542 | synchronized (fStatisticsUpdateSyncObj) { | |
543 | if (fStatisticsUpdateBusy) { | |
544 | fStatisticsUpdatePending = true; | |
545 | fStatisticsUpdateRange = timeRange; | |
546 | return true; | |
547 | } | |
548 | fStatisticsUpdateBusy = true; | |
549 | return false; | |
550 | } | |
551 | } | |
552 | ||
553 | /** | |
554 | * Sends pending request (if any) | |
555 | */ | |
556 | protected void sendPendingUpdate() { | |
557 | synchronized (fStatisticsUpdateSyncObj) { | |
558 | fStatisticsUpdateBusy = false; | |
559 | if (fStatisticsUpdatePending) { | |
560 | fStatisticsUpdatePending = false; | |
561 | requestData(TmfExperiment.getCurrentExperiment(), fStatisticsUpdateRange); | |
562 | } | |
563 | } | |
564 | } | |
565 | ||
566 | } |