Commit | Line | Data |
---|---|---|
b1a7aebb MG |
1 | /******************************************************************************* |
2 | * Copyright (c) 2016 École Polytechnique de Montréal | |
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 | ||
10 | package org.eclipse.tracecompass.internal.lttng2.kernel.ui.views.vm.vcpuview; | |
11 | ||
12 | import java.util.ArrayList; | |
13 | import java.util.Collection; | |
14 | import java.util.Collections; | |
15 | import java.util.Comparator; | |
16 | import java.util.HashMap; | |
17 | import java.util.List; | |
18 | import java.util.Map; | |
19 | ||
20 | import org.eclipse.core.runtime.IProgressMonitor; | |
21 | import org.eclipse.jdt.annotation.NonNull; | |
22 | import org.eclipse.jdt.annotation.Nullable; | |
23 | import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.KernelAnalysisModule; | |
24 | import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.KernelThreadInformationProvider; | |
25 | import org.eclipse.tracecompass.common.core.NonNullUtils; | |
26 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.vm.VmAttributes; | |
27 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.vm.module.VirtualMachineCpuAnalysis; | |
28 | import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.vm.trace.VirtualMachineExperiment; | |
29 | import org.eclipse.tracecompass.internal.lttng2.kernel.ui.Activator; | |
30 | import org.eclipse.tracecompass.internal.lttng2.kernel.ui.views.vm.vcpuview.VirtualMachineCommon.Type; | |
31 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; | |
32 | import org.eclipse.tracecompass.statesystem.core.StateSystemUtils; | |
33 | import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException; | |
34 | import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException; | |
35 | import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException; | |
36 | import org.eclipse.tracecompass.statesystem.core.exceptions.TimeRangeException; | |
37 | import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval; | |
38 | import org.eclipse.tracecompass.tmf.core.statesystem.TmfStateSystemAnalysisModule; | |
39 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace; | |
40 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; | |
41 | import org.eclipse.tracecompass.tmf.core.trace.experiment.TmfExperimentUtils; | |
42 | import org.eclipse.tracecompass.tmf.ui.views.timegraph.AbstractTimeGraphView; | |
43 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeEvent; | |
44 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeGraphEntry; | |
45 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.NullTimeEvent; | |
46 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeEvent; | |
47 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeGraphEntry; | |
48 | ||
49 | import com.google.common.collect.Multimap; | |
50 | ||
51 | /** | |
52 | * Main implementation for the Virtual Machine view | |
53 | * | |
54 | * @author Mohamad Gebai | |
55 | */ | |
56 | public class VirtualMachineView extends AbstractTimeGraphView { | |
57 | ||
58 | /** View ID. */ | |
59 | public static final String ID = "org.eclipse.tracecompass.lttng2.analysis.vm.ui.vmview"; //$NON-NLS-1$ | |
60 | ||
61 | private static final String[] COLUMN_NAMES = new String[] { | |
62 | Messages.VmView_stateTypeName | |
63 | }; | |
64 | ||
65 | private static final String[] FILTER_COLUMN_NAMES = new String[] { | |
66 | Messages.VmView_stateTypeName | |
67 | }; | |
68 | ||
69 | // Timeout between updates in the build thread in ms | |
70 | private static final long BUILD_UPDATE_TIMEOUT = 500; | |
71 | private static final int[] DEFAULT_WEIGHT = { 1, 3 }; | |
72 | ||
73 | private Comparator<ITimeGraphEntry> fComparator = new Comparator<ITimeGraphEntry>() { | |
74 | @Override | |
75 | public int compare(@Nullable ITimeGraphEntry o1, @Nullable ITimeGraphEntry o2) { | |
76 | if (!((o1 instanceof VirtualMachineViewEntry) && (o2 instanceof VirtualMachineViewEntry))) { | |
77 | return 0; | |
78 | } | |
79 | VirtualMachineViewEntry entry1 = (VirtualMachineViewEntry) o1; | |
80 | VirtualMachineViewEntry entry2 = (VirtualMachineViewEntry) o2; | |
81 | int cmp = entry1.getType().compareTo(entry2.getType()); | |
82 | /* FIXME: Threads should be ordered by their thread IDs instead */ | |
83 | if (cmp == 0) { | |
84 | cmp = entry1.getName().compareTo(entry2.getName()); | |
85 | } | |
86 | return cmp; | |
87 | } | |
88 | }; | |
89 | ||
90 | // ------------------------------------------------------------------------ | |
91 | // Constructors | |
92 | // ------------------------------------------------------------------------ | |
93 | ||
94 | /** | |
95 | * Default constructor | |
96 | */ | |
97 | public VirtualMachineView() { | |
98 | super(ID, new VirtualMachinePresentationProvider()); | |
99 | setFilterColumns(FILTER_COLUMN_NAMES); | |
100 | setTreeColumns(COLUMN_NAMES); | |
101 | setTreeLabelProvider(new VmViewTreeLabelProvider()); | |
102 | setWeight(DEFAULT_WEIGHT); | |
103 | setAutoExpandLevel(2); | |
104 | } | |
105 | ||
106 | @Override | |
107 | protected @Nullable String getNextText() { | |
108 | return Messages.VmView_nextResourceActionNameText; | |
109 | } | |
110 | ||
111 | @Override | |
112 | protected @Nullable String getNextTooltip() { | |
113 | return Messages.VmView_nextResourceActionToolTipText; | |
114 | } | |
115 | ||
116 | @Override | |
117 | protected @Nullable String getPrevText() { | |
118 | return Messages.VmView_previousResourceActionNameText; | |
119 | } | |
120 | ||
121 | @Override | |
122 | protected @Nullable String getPrevTooltip() { | |
123 | return Messages.VmView_previousResourceActionToolTipText; | |
124 | } | |
125 | ||
126 | private static class VmViewTreeLabelProvider extends TreeLabelProvider { | |
127 | ||
128 | @Override | |
129 | public String getColumnText(@Nullable Object element, int columnIndex) { | |
130 | if (!(element instanceof VirtualMachineViewEntry)) { | |
131 | return ""; //$NON-NLS-1$ | |
132 | } | |
133 | VirtualMachineViewEntry entry = (VirtualMachineViewEntry) element; | |
134 | ||
135 | if (COLUMN_NAMES[columnIndex].equals(Messages.VmView_stateTypeName)) { | |
136 | String name = entry.getName(); | |
137 | return (name == null) ? "" : name; //$NON-NLS-1$ | |
138 | } | |
139 | return ""; //$NON-NLS-1$ | |
140 | } | |
141 | ||
142 | } | |
143 | ||
144 | // ------------------------------------------------------------------------ | |
145 | // Internal | |
146 | // ------------------------------------------------------------------------ | |
147 | ||
148 | @Override | |
149 | protected void buildEventList(ITmfTrace trace, ITmfTrace parentTrace, IProgressMonitor monitor) { | |
150 | setStartTime(Long.MAX_VALUE); | |
151 | setEndTime(Long.MIN_VALUE); | |
152 | ||
153 | if (monitor.isCanceled()) { | |
154 | return; | |
155 | } | |
156 | if (!(parentTrace instanceof VirtualMachineExperiment)) { | |
157 | return; | |
158 | } | |
159 | ITmfStateSystem ssq = TmfStateSystemAnalysisModule.getStateSystem(parentTrace, VirtualMachineCpuAnalysis.ID); | |
160 | if (ssq == null) { | |
161 | return; | |
162 | } | |
163 | VirtualMachineExperiment vmExperiment = (VirtualMachineExperiment) parentTrace; | |
164 | long startTime = ssq.getStartTime(); | |
165 | ||
166 | ArrayList<VirtualMachineViewEntry> entryList = new ArrayList<>(); | |
167 | Map<String, VirtualMachineViewEntry> entryMap = new HashMap<>(); | |
168 | ||
169 | boolean complete = false; | |
170 | VirtualMachineViewEntry groupEntry = null; | |
171 | ||
172 | while (!complete) { | |
173 | if (monitor.isCanceled()) { | |
174 | return; | |
175 | } | |
176 | complete = ssq.waitUntilBuilt(BUILD_UPDATE_TIMEOUT); | |
177 | if (ssq.isCancelled()) { | |
178 | return; | |
179 | } | |
180 | ||
181 | long endTime = ssq.getCurrentEndTime() + 1; | |
182 | if (groupEntry == null) { | |
183 | groupEntry = new VirtualMachineViewEntry.VmEntryBuilder(vmExperiment.getName(), startTime, endTime, vmExperiment).build(); | |
184 | /* | |
185 | * There is only one root entry for this view, so we can put it | |
186 | * right away | |
187 | */ | |
188 | entryList.add(groupEntry); | |
189 | putEntryList(parentTrace, new ArrayList<TimeGraphEntry>(entryList)); | |
190 | } else { | |
191 | groupEntry.updateEndTime(endTime); | |
192 | } | |
193 | ||
194 | setStartTime(Math.min(getStartTime(), startTime)); | |
195 | setEndTime(Math.max(getEndTime(), endTime)); | |
196 | ||
197 | /* | |
198 | * Create the entries for the VMs in this experiment and their | |
199 | * respective threads | |
200 | */ | |
201 | buildEntries(ssq, startTime, endTime, groupEntry, entryMap, vmExperiment); | |
202 | ||
203 | if (parentTrace.equals(getTrace())) { | |
204 | refresh(); | |
205 | } | |
206 | ||
207 | for (VirtualMachineViewEntry entry : entryList) { | |
208 | if (monitor.isCanceled()) { | |
209 | return; | |
210 | } | |
211 | buildEntryEventList(entry, ssq, startTime, endTime, monitor); | |
212 | } | |
213 | } | |
214 | } | |
215 | ||
216 | private void buildEntries(ITmfStateSystem ssq, long startTime, long endTime, VirtualMachineViewEntry groupEntry, | |
217 | Map<@NonNull String, @NonNull VirtualMachineViewEntry> entryMap, VirtualMachineExperiment vmExperiment) { | |
218 | try { | |
219 | List<Integer> vmQuarks = ssq.getQuarks(VmAttributes.VIRTUAL_MACHINES, "*"); //$NON-NLS-1$ | |
220 | /* For each virtual machine in the analysis */ | |
221 | for (Integer vmQuark : vmQuarks) { | |
222 | ||
223 | /* Display an entry for the virtual machine */ | |
224 | String vmHostId = NonNullUtils.checkNotNull(ssq.getAttributeName(vmQuark)); | |
225 | ITmfStateInterval vmNameInterval = StateSystemUtils.queryUntilNonNullValue(ssq, vmQuark, startTime, endTime); | |
226 | String vmName = vmHostId; | |
227 | if (vmNameInterval != null) { | |
228 | vmName = vmNameInterval.getStateValue().unboxStr(); | |
229 | } | |
230 | ||
231 | VirtualMachineViewEntry vmEntry = entryMap.get(vmHostId); | |
232 | if (vmEntry == null) { | |
233 | vmEntry = new VirtualMachineViewEntry.VmEntryBuilder(vmName, startTime, endTime, vmExperiment).setId(vmHostId).setVmName(vmName).setNumericId(vmQuark).setType(Type.VM).build(); | |
234 | vmEntry.sortChildren(fComparator); | |
235 | ||
236 | groupEntry.addChild(vmEntry); | |
237 | entryMap.put(vmHostId, vmEntry); | |
238 | } else { | |
239 | vmEntry.updateEndTime(endTime); | |
240 | } | |
241 | ||
242 | /* Display an entry for each of its CPUs */ | |
243 | for (Integer vCpuQuark : ssq.getSubAttributes(vmQuark, false)) { | |
244 | String vcpuId = ssq.getAttributeName(vCpuQuark); | |
245 | VirtualMachineViewEntry vcpuEntry = entryMap.get(vmHostId + vcpuId); | |
246 | if (vcpuEntry == null) { | |
247 | vcpuEntry = new VirtualMachineViewEntry.VmEntryBuilder(vcpuId, startTime, endTime, vmExperiment).setId(vcpuId).setVmName(vmName).setNumericId(vCpuQuark).setType(Type.VCPU).build(); | |
248 | ||
249 | vmEntry.addChild(vcpuEntry); | |
250 | entryMap.put(vmHostId + vcpuId, vcpuEntry); | |
251 | } else { | |
252 | vcpuEntry.updateEndTime(endTime); | |
253 | } | |
254 | ||
255 | } | |
256 | ||
257 | /* | |
258 | * Get the LTTng Kernel analysis module from the corresponding | |
259 | * trace | |
260 | */ | |
261 | KernelAnalysisModule kernelModule = TmfExperimentUtils.getAnalysisModuleOfClassForHost(vmExperiment, vmHostId, KernelAnalysisModule.class); | |
262 | if (kernelModule == null) { | |
263 | continue; | |
264 | } | |
265 | ||
266 | VirtualMachineViewEntry threadEntry = entryMap.get(vmHostId + NonNullUtils.nullToEmptyString(Messages.VmView_threads)); | |
267 | if (threadEntry == null) { | |
268 | threadEntry = new VirtualMachineViewEntry.VmEntryBuilder(NonNullUtils.nullToEmptyString(Messages.VmView_threads), startTime, endTime, vmExperiment).build(); | |
269 | entryMap.put(vmHostId + NonNullUtils.nullToEmptyString(Messages.VmView_threads), threadEntry); | |
270 | vmEntry.addChild(threadEntry); | |
271 | } else { | |
272 | threadEntry.updateEndTime(endTime); | |
273 | } | |
274 | ||
275 | /* | |
276 | * Display an entry for each thread. | |
277 | * | |
278 | * For each interval that is in a running status, intersect with | |
279 | * the status of the virtual CPU it is currently running on | |
280 | */ | |
281 | Collection<Integer> threadIds = KernelThreadInformationProvider.getThreadIds(kernelModule); | |
282 | for (Integer threadId : threadIds) { | |
283 | if (threadId == -1) { | |
284 | continue; | |
285 | } | |
286 | VirtualMachineViewEntry oneThreadEntry = entryMap.get(vmHostId + ':' + threadId); | |
287 | if (oneThreadEntry != null) { | |
288 | oneThreadEntry.updateEndTime(endTime); | |
289 | continue; | |
290 | } | |
291 | /* | |
292 | * FIXME: Only add threads that are active during the trace | |
293 | */ | |
294 | String threadName = KernelThreadInformationProvider.getExecutableName(kernelModule, threadId); | |
295 | String tidString = NonNullUtils.checkNotNull(threadId.toString()); | |
296 | threadName = (threadName != null) ? tidString + ':' + ' ' + threadName : tidString; | |
297 | oneThreadEntry = new VirtualMachineViewEntry.VmEntryBuilder(threadName, startTime, endTime, vmExperiment).setId(threadName).setVmName(vmName).setNumericId(threadId).setType(Type.THREAD).build(); | |
298 | ||
299 | threadEntry.addChild(oneThreadEntry); | |
300 | entryMap.put(vmHostId + ':' + threadId, oneThreadEntry); | |
301 | } | |
302 | ||
303 | } | |
304 | } catch (AttributeNotFoundException e) { | |
305 | /* | |
306 | * The attribute may not exist yet if the state system is being | |
307 | * built | |
308 | */ | |
309 | } catch (TimeRangeException | StateValueTypeException e) { | |
310 | Activator.getDefault().logError("VirtualMachineView: error building event list", e); //$NON-NLS-1$ | |
311 | } | |
312 | } | |
313 | ||
314 | private void buildEntryEventList(TimeGraphEntry entry, ITmfStateSystem ssq, long start, long end, IProgressMonitor monitor) { | |
315 | if (start < entry.getEndTime() && end > entry.getStartTime()) { | |
316 | ||
317 | long startTime = Math.max(start, entry.getStartTime()); | |
318 | long endTime = Math.min(end + 1, entry.getEndTime()); | |
319 | long resolution = Math.max(1, (end - ssq.getStartTime()) / getDisplayWidth()); | |
320 | List<ITimeEvent> eventList = getEventList(entry, startTime, endTime, resolution, monitor); | |
321 | entry.setEventList(eventList); | |
322 | redraw(); | |
323 | for (ITimeGraphEntry child : entry.getChildren()) { | |
324 | if (!(child instanceof TimeGraphEntry)) { | |
325 | continue; | |
326 | } | |
327 | if (monitor.isCanceled()) { | |
328 | return; | |
329 | } | |
330 | buildEntryEventList((TimeGraphEntry) child, ssq, start, end, monitor); | |
331 | } | |
332 | } | |
333 | } | |
334 | ||
335 | @Override | |
336 | protected @Nullable List<ITimeEvent> getEventList(TimeGraphEntry entry, | |
337 | long startTime, long endTime, long resolution, | |
338 | IProgressMonitor monitor) { | |
339 | if (!(entry instanceof VirtualMachineViewEntry)) { | |
340 | return null; | |
341 | } | |
342 | if (monitor.isCanceled()) { | |
343 | return null; | |
344 | } | |
345 | ||
346 | VirtualMachineViewEntry vmEntry = (VirtualMachineViewEntry) entry; | |
347 | ||
348 | switch (vmEntry.getType()) { | |
349 | case THREAD: { | |
350 | return getThreadEventList(entry, vmEntry, monitor); | |
351 | } | |
352 | case VCPU: { | |
353 | return getVcpuEventList(entry, vmEntry, startTime, endTime, resolution, monitor); | |
354 | } | |
355 | case VM: { | |
356 | VirtualMachineExperiment experiment = vmEntry.getExperiment(); | |
357 | VirtualMachineCpuAnalysis vmAnalysis = null; | |
358 | for (VirtualMachineCpuAnalysis module : TmfTraceUtils.getAnalysisModulesOfClass(experiment, VirtualMachineCpuAnalysis.class)) { | |
359 | vmAnalysis = module; | |
360 | break; | |
361 | } | |
362 | if (vmAnalysis == null) { | |
363 | break; | |
364 | } | |
365 | Multimap<Integer, ITmfStateInterval> updatedThreadIntervals = vmAnalysis.getUpdatedThreadIntervals(vmEntry.getNumericId(), startTime, endTime, resolution, monitor); | |
366 | vmEntry.setThreadIntervals(updatedThreadIntervals); | |
367 | } | |
368 | break; | |
369 | case NULL: | |
370 | /* These entry types are not used in this view */ | |
371 | break; | |
372 | default: | |
373 | break; | |
374 | } | |
375 | ||
376 | return null; | |
377 | } | |
378 | ||
379 | private static @Nullable List<@NonNull ITimeEvent> getVcpuEventList(TimeGraphEntry entry, VirtualMachineViewEntry vmEntry, long startTime, long endTime, long resolution, IProgressMonitor monitor) { | |
380 | List<ITimeEvent> eventList = null; | |
381 | try { | |
382 | int quark = vmEntry.getNumericId(); | |
383 | ||
384 | ITmfStateSystem ssq = TmfStateSystemAnalysisModule.getStateSystem(vmEntry.getExperiment(), VirtualMachineCpuAnalysis.ID); | |
385 | if (ssq == null) { | |
386 | return Collections.EMPTY_LIST; | |
387 | } | |
388 | final long realStart = Math.max(startTime, ssq.getStartTime()); | |
389 | final long realEnd = Math.min(endTime, ssq.getCurrentEndTime() + 1); | |
390 | if (realEnd <= realStart) { | |
391 | return Collections.EMPTY_LIST; | |
392 | } | |
393 | quark = ssq.getQuarkRelative(quark, VmAttributes.STATUS); | |
394 | List<ITmfStateInterval> statusIntervals = StateSystemUtils.queryHistoryRange(ssq, quark, realStart, realEnd - 1, resolution, monitor); | |
395 | eventList = new ArrayList<>(statusIntervals.size()); | |
396 | long lastEndTime = -1; | |
397 | for (ITmfStateInterval statusInterval : statusIntervals) { | |
398 | if (monitor.isCanceled()) { | |
399 | return null; | |
400 | } | |
401 | ||
402 | long time = statusInterval.getStartTime(); | |
403 | long duration = statusInterval.getEndTime() - time + 1; | |
404 | if (!statusInterval.getStateValue().isNull()) { | |
405 | int status = statusInterval.getStateValue().unboxInt(); | |
406 | if (lastEndTime != time && lastEndTime != -1) { | |
407 | eventList.add(new TimeEvent(entry, lastEndTime, time - lastEndTime)); | |
408 | } | |
409 | eventList.add(new TimeEvent(entry, time, duration, status)); | |
410 | } else if (lastEndTime == -1 || time + duration >= endTime) { | |
411 | // add null event if it intersects the start or end time | |
412 | eventList.add(new NullTimeEvent(entry, time, duration)); | |
413 | } | |
414 | lastEndTime = time + duration; | |
415 | } | |
416 | } catch (AttributeNotFoundException | TimeRangeException | StateValueTypeException e) { | |
417 | Activator.getDefault().logError("Error getting event list", e); //$NON-NLS-1$ | |
418 | } catch (StateSystemDisposedException e) { | |
419 | /* Ignored */ | |
420 | } | |
421 | return eventList; | |
422 | } | |
423 | ||
424 | private static @Nullable List<@NonNull ITimeEvent> getThreadEventList(TimeGraphEntry entry, VirtualMachineViewEntry vmEntry, IProgressMonitor monitor) { | |
425 | List<ITimeEvent> eventList = null; | |
426 | /* | |
427 | * The parent VM entry will contain the thread intervals for all thread. | |
428 | * Just take the list from there | |
429 | */ | |
430 | Collection<ITmfStateInterval> threadIntervals = null; | |
431 | ITimeGraphEntry parent = vmEntry.getParent(); | |
432 | while (threadIntervals == null && parent != null) { | |
433 | if (parent instanceof VirtualMachineViewEntry) { | |
434 | threadIntervals = ((VirtualMachineViewEntry) parent).getThreadIntervals(vmEntry.getNumericId()); | |
435 | } | |
436 | if (parent instanceof TimeGraphEntry) { | |
437 | parent = ((TimeGraphEntry) parent).getParent(); | |
438 | } | |
439 | } | |
440 | if (threadIntervals != null) { | |
441 | eventList = new ArrayList<>(threadIntervals.size()); | |
442 | long lastEndTime = -1; | |
443 | for (ITmfStateInterval interval : threadIntervals) { | |
444 | if (monitor.isCanceled()) { | |
445 | return null; | |
446 | } | |
447 | long time = interval.getStartTime(); | |
448 | long duration = interval.getEndTime() - time + 1; | |
449 | /* | |
450 | * FIXME: I think the key for the alpha bug when alpha overlaps | |
451 | * multiple events is around here | |
452 | * | |
453 | * Hint by Patrick: "The problem is that the thread intervals | |
454 | * are sorted by start time, and drawn in that order. | |
455 | * | |
456 | * Given the intervals: Blue [0,10] Alpha [5,15] Red [10,20] | |
457 | * | |
458 | * Blue is drawn, then Alpha makes DarkBlue from [5,10] and | |
459 | * DarkBackground from [10,15], then Red is drawn over [10,20], | |
460 | * overwriting the DarkBackground. There is no DarkRed. | |
461 | * | |
462 | * For this to work you would have to draw all real states | |
463 | * first, then all alpha states second. | |
464 | * | |
465 | * I think this would also have the side-effect that the find | |
466 | * item used for tool tips would always find the real event and | |
467 | * never the alpha event. This might be what we want. Right now | |
468 | * the tool tip has State: (multiple). | |
469 | * | |
470 | * But using the Next Event button, we would skip to the next | |
471 | * real event and not at the preemption event. Maybe not what we | |
472 | * want. | |
473 | * | |
474 | * Maybe what we need is separate thread interval events: | |
475 | * | |
476 | * Blue [0,5] Preempted Blue [5,10] Preempted Red [10,15] Red | |
477 | * [15,20]... | |
478 | * | |
479 | * The preempted events would have the real state value, but | |
480 | * with a flag for alpha to be used in the postDrawEvent." | |
481 | */ | |
482 | if (!interval.getStateValue().isNull()) { | |
483 | int status = interval.getStateValue().unboxInt(); | |
484 | if (lastEndTime < time && lastEndTime != -1) { | |
485 | /* | |
486 | * Add a time event to fill the blanks between intervals | |
487 | */ | |
488 | eventList.add(new TimeEvent(entry, lastEndTime, time - lastEndTime)); | |
489 | } | |
490 | eventList.add(new TimeEvent(entry, time, duration, status)); | |
491 | } else if (lastEndTime == -1) { | |
492 | eventList.add(new NullTimeEvent(entry, time, duration)); | |
493 | } | |
494 | lastEndTime = time + duration; | |
495 | } | |
496 | } | |
497 | return eventList; | |
498 | } | |
499 | ||
500 | @Override | |
501 | protected Iterable<ITmfTrace> getTracesToBuild(@Nullable ITmfTrace trace) { | |
502 | if (trace == null) { | |
503 | return NonNullUtils.checkNotNull(Collections.EMPTY_SET); | |
504 | } | |
505 | return NonNullUtils.checkNotNull(Collections.singleton(trace)); | |
506 | } | |
507 | ||
508 | } |