analysis/org.eclipse.tracecompass.analysis.os.linux.ui/src/org/eclipse/tracecompass/analysis/os/linux/ui/views/controlflow/ControlFlowView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2015 Ericsson, École Polytechnique de Montréal and others.
   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  *   Patrick Tasse - Initial API and implementation
  11  *   Geneviève Bastien - Move code to provide base classes for time graph view
  12  *   Christian Mansky - Add check active / uncheck inactive buttons
  13  *******************************************************************************/
  14
  15 package org.eclipse.tracecompass.analysis.os.linux.ui.views.controlflow;
  16
  17 import java.util.ArrayList;
  18 import java.util.Comparator;
  19 import java.util.HashMap;
  20 import java.util.List;
  21 import java.util.Map;
  22
  23 import org.eclipse.core.runtime.IProgressMonitor;
  24 import org.eclipse.jdt.annotation.NonNull;
  25 import org.eclipse.jdt.annotation.Nullable;
  26 import org.eclipse.jface.action.IAction;
  27 import org.eclipse.jface.action.IMenuManager;
  28 import org.eclipse.jface.action.IToolBarManager;
  29 import org.eclipse.jface.dialogs.IDialogSettings;
  30 import org.eclipse.jface.viewers.ISelection;
  31 import org.eclipse.jface.viewers.StructuredSelection;
  32 import org.eclipse.swt.widgets.Composite;
  33 import org.eclipse.tracecompass.analysis.os.linux.core.kernel.KernelAnalysisModule;
  34 import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.Attributes;
  35 import org.eclipse.tracecompass.internal.analysis.os.linux.ui.Activator;
  36 import org.eclipse.tracecompass.internal.analysis.os.linux.ui.Messages;
  37 import org.eclipse.tracecompass.internal.analysis.os.linux.ui.actions.FollowThreadAction;
  38 import org.eclipse.tracecompass.internal.analysis.os.linux.ui.views.controlflow.ControlFlowColumnComparators;
  39 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
  40 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  41 import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException;
  42 import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException;
  43 import org.eclipse.tracecompass.statesystem.core.exceptions.TimeRangeException;
  44 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  45 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  46 import org.eclipse.tracecompass.tmf.core.statesystem.TmfStateSystemAnalysisModule;
  47 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  48 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceManager;
  49 import org.eclipse.tracecompass.tmf.core.util.Pair;
  50 import org.eclipse.tracecompass.tmf.ui.views.timegraph.AbstractStateSystemTimeGraphView;
  51 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ILinkEvent;
  52 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeEvent;
  53 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
  54 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.NullTimeEvent;
  55 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeEvent;
  56 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeGraphEntry;
  57 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.TimeLinkEvent;
  58 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.widgets.Utils;
  59 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.widgets.Utils.Resolution;
  60 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.widgets.Utils.TimeFormat;
  61
  62 import com.google.common.collect.ImmutableList;
  63
  64 /**
  65  * The Control Flow view main object
  66  *
  67  */
  68 public class ControlFlowView extends AbstractStateSystemTimeGraphView {
  69
  70     // ------------------------------------------------------------------------
  71     // Constants
  72     // ------------------------------------------------------------------------
  73     /**
  74      * View ID.
  75      */
  76     public static final String ID = "org.eclipse.tracecompass.analysis.os.linux.views.controlflow"; //$NON-NLS-1$
  77
  78     private static final String PROCESS_COLUMN = Messages.ControlFlowView_processColumn;
  79     private static final String TID_COLUMN = Messages.ControlFlowView_tidColumn;
  80     private static final String PTID_COLUMN = Messages.ControlFlowView_ptidColumn;
  81     private static final String BIRTH_TIME_COLUMN = Messages.ControlFlowView_birthTimeColumn;
  82     private static final String TRACE_COLUMN = Messages.ControlFlowView_traceColumn;
  83
  84     private static final String[] COLUMN_NAMES = new String[] {
  85             PROCESS_COLUMN,
  86             TID_COLUMN,
  87             PTID_COLUMN,
  88             BIRTH_TIME_COLUMN,
  89             TRACE_COLUMN
  90     };
  91
  92     private static final String[] FILTER_COLUMN_NAMES = new String[] {
  93             PROCESS_COLUMN,
  94             TID_COLUMN
  95     };
  96
  97     // Timeout between updates in the build thread in ms
  98     private static final long BUILD_UPDATE_TIMEOUT = 500;
  99
 100     private static final Comparator<ITimeGraphEntry>[] COLUMN_COMPARATORS;
 101
 102     private static final int INITIAL_SORT_COLUMN_INDEX = 3;
 103
 104     static {
 105         ImmutableList.Builder<Comparator<ITimeGraphEntry>> builder = ImmutableList.builder();
 106         builder.add(ControlFlowColumnComparators.PROCESS_NAME_COLUMN_COMPARATOR)
 107             .add(ControlFlowColumnComparators.TID_COLUMN_COMPARATOR)
 108             .add(ControlFlowColumnComparators.PTID_COLUMN_COMPARATOR)
 109             .add(ControlFlowColumnComparators.BIRTH_TIME_COLUMN_COMPARATOR)
 110             .add(ControlFlowColumnComparators.TRACE_COLUMN_COMPARATOR);
 111         List<Comparator<ITimeGraphEntry>> l = builder.build();
 112         COLUMN_COMPARATORS = l.toArray(new Comparator[l.size()]);
 113     }
 114
 115     // ------------------------------------------------------------------------
 116     // Constructors
 117     // ------------------------------------------------------------------------
 118
 119     /**
 120      * Constructor
 121      */
 122     public ControlFlowView() {
 123         super(ID, new ControlFlowPresentationProvider());
 124         setTreeColumns(COLUMN_NAMES, COLUMN_COMPARATORS, INITIAL_SORT_COLUMN_INDEX);
 125         setTreeLabelProvider(new ControlFlowTreeLabelProvider());
 126         setFilterColumns(FILTER_COLUMN_NAMES);
 127         setFilterLabelProvider(new ControlFlowFilterLabelProvider());
 128         setEntryComparator(ControlFlowColumnComparators.BIRTH_TIME_COLUMN_COMPARATOR);
 129     }
 130
 131     @Override
 132     public void createPartControl(Composite parent) {
 133         super.createPartControl(parent);
 134         // add "Check active" Button to TimeGraphFilterDialog
 135         super.getTimeGraphCombo().addTimeGraphFilterCheckActiveButton(
 136                 new ControlFlowCheckActiveProvider(Messages.ControlFlowView_checkActiveLabel, Messages.ControlFlowView_checkActiveToolTip));
 137         // add "Uncheck inactive" Button to TimeGraphFilterDialog
 138         super.getTimeGraphCombo().addTimeGraphFilterUncheckInactiveButton(
 139                 new ControlFlowCheckActiveProvider(Messages.ControlFlowView_uncheckInactiveLabel, Messages.ControlFlowView_uncheckInactiveToolTip));
 140     }
 141
 142     /**
 143      * @since 2.0
 144      */
 145     @Override
 146     protected void fillTimeGraphEntryContextMenu(@NonNull IMenuManager menuManager) {
 147         ISelection selection = getSite().getSelectionProvider().getSelection();
 148         if (selection instanceof StructuredSelection) {
 149             StructuredSelection sSel = (StructuredSelection) selection;
 150             if (sSel.getFirstElement() instanceof ControlFlowEntry) {
 151                 ControlFlowEntry entry = (ControlFlowEntry) sSel.getFirstElement();
 152                 menuManager.add(new FollowThreadAction(ControlFlowView.this, entry.getName(), entry.getThreadId(), entry.getTrace()));
 153             }
 154         }
 155     }
 156
 157     @Override
 158     protected void fillLocalToolBar(IToolBarManager manager) {
 159         super.fillLocalToolBar(manager);
 160         IDialogSettings settings = Activator.getDefault().getDialogSettings();
 161         IDialogSettings section = settings.getSection(getClass().getName());
 162         if (section == null) {
 163             section = settings.addNewSection(getClass().getName());
 164         }
 165
 166         IAction hideArrowsAction = getTimeGraphCombo().getTimeGraphViewer().getHideArrowsAction(section);
 167         manager.add(hideArrowsAction);
 168
 169         IAction followArrowBwdAction = getTimeGraphCombo().getTimeGraphViewer().getFollowArrowBwdAction();
 170         followArrowBwdAction.setText(Messages.ControlFlowView_followCPUBwdText);
 171         followArrowBwdAction.setToolTipText(Messages.ControlFlowView_followCPUBwdText);
 172         manager.add(followArrowBwdAction);
 173
 174         IAction followArrowFwdAction = getTimeGraphCombo().getTimeGraphViewer().getFollowArrowFwdAction();
 175         followArrowFwdAction.setText(Messages.ControlFlowView_followCPUFwdText);
 176         followArrowFwdAction.setToolTipText(Messages.ControlFlowView_followCPUFwdText);
 177         manager.add(followArrowFwdAction);
 178     }
 179
 180     @Override
 181     protected String getNextText() {
 182         return Messages.ControlFlowView_nextProcessActionNameText;
 183     }
 184
 185     @Override
 186     protected String getNextTooltip() {
 187         return Messages.ControlFlowView_nextProcessActionToolTipText;
 188     }
 189
 190     @Override
 191     protected String getPrevText() {
 192         return Messages.ControlFlowView_previousProcessActionNameText;
 193     }
 194
 195     @Override
 196     protected String getPrevTooltip() {
 197         return Messages.ControlFlowView_previousProcessActionToolTipText;
 198     }
 199
 200     /**
 201      * @author gbastien
 202      *
 203      */
 204     protected static class ControlFlowTreeLabelProvider extends TreeLabelProvider {
 205
 206         @Override
 207         public String getColumnText(Object element, int columnIndex) {
 208             ControlFlowEntry entry = (ControlFlowEntry) element;
 209
 210             if (COLUMN_NAMES[columnIndex].equals(Messages.ControlFlowView_processColumn)) {
 211                 return entry.getName();
 212             } else if (COLUMN_NAMES[columnIndex].equals(Messages.ControlFlowView_tidColumn)) {
 213                 return Integer.toString(entry.getThreadId());
 214             } else if (COLUMN_NAMES[columnIndex].equals(Messages.ControlFlowView_ptidColumn)) {
 215                 if (entry.getParentThreadId() > 0) {
 216                     return Integer.toString(entry.getParentThreadId());
 217                 }
 218             } else if (COLUMN_NAMES[columnIndex].equals(Messages.ControlFlowView_birthTimeColumn)) {
 219                 return Utils.formatTime(entry.getStartTime(), TimeFormat.CALENDAR, Resolution.NANOSEC);
 220             } else if (COLUMN_NAMES[columnIndex].equals(Messages.ControlFlowView_traceColumn)) {
 221                 return entry.getTrace().getName();
 222             }
 223             return ""; //$NON-NLS-1$
 224         }
 225
 226     }
 227
 228     private static class ControlFlowFilterLabelProvider extends TreeLabelProvider {
 229
 230         @Override
 231         public String getColumnText(Object element, int columnIndex) {
 232             ControlFlowEntry entry = (ControlFlowEntry) element;
 233
 234             if (columnIndex == 0) {
 235                 return entry.getName();
 236             } else if (columnIndex == 1) {
 237                 return Integer.toString(entry.getThreadId());
 238             }
 239             return ""; //$NON-NLS-1$
 240         }
 241
 242     }
 243
 244     // ------------------------------------------------------------------------
 245     // Internal
 246     // ------------------------------------------------------------------------
 247
 248     @Override
 249     protected void buildEventList(final ITmfTrace trace, final ITmfTrace parentTrace, final IProgressMonitor monitor) {
 250         final ITmfStateSystem ssq = TmfStateSystemAnalysisModule.getStateSystem(trace, KernelAnalysisModule.ID);
 251         if (ssq == null) {
 252             return;
 253         }
 254
 255         final List<ControlFlowEntry> entryList = new ArrayList<>();
 256         /** Map of view entries, key is a pair [threadId, cpuId] */
 257         final Map<Pair<Integer, Integer>, ControlFlowEntry> entryMap = new HashMap<>();
 258
 259         long start = ssq.getStartTime();
 260         setStartTime(Math.min(getStartTime(), start));
 261
 262         boolean complete = false;
 263         while (!complete) {
 264             if (monitor.isCanceled()) {
 265                 return;
 266             }
 267             complete = ssq.waitUntilBuilt(BUILD_UPDATE_TIMEOUT);
 268             if (ssq.isCancelled()) {
 269                 return;
 270             }
 271             long end = ssq.getCurrentEndTime();
 272             if (start == end && !complete) { // when complete execute one last time regardless of end time
 273                 continue;
 274             }
 275             final long resolution = Math.max(1, (end - ssq.getStartTime()) / getDisplayWidth());
 276             setEndTime(Math.max(getEndTime(), end + 1));
 277             final List<Integer> threadQuarks = ssq.getQuarks(Attributes.THREADS, "*"); //$NON-NLS-1$
 278             final long qStart = start;
 279             final long qEnd = end;
 280             queryFullStates(ssq, qStart, qEnd, resolution, monitor, new IQueryHandler() {
 281                 @Override
 282                 public void handle(List<List<ITmfStateInterval>> fullStates, List<ITmfStateInterval> prevFullState) {
 283                     for (int threadQuark : threadQuarks) {
 284                         String threadAttributeName = ssq.getAttributeName(threadQuark);
 285
 286                         Pair<Integer, Integer> entryKey = Attributes.parseThreadAttributeName(threadAttributeName);
 287                         int threadId = entryKey.getFirst();
 288
 289                         if (threadId < 0) { // ignore the 'unknown' (-1) thread
 290                             continue;
 291                         }
 292
 293                         int execNameQuark;
 294                         int ppidQuark;
 295                         try {
 296                             execNameQuark = ssq.getQuarkRelative(threadQuark, Attributes.EXEC_NAME);
 297                             ppidQuark = ssq.getQuarkRelative(threadQuark, Attributes.PPID);
 298                         } catch (AttributeNotFoundException e) {
 299                             /* No information on this thread (yet?), skip it for now */
 300                             continue;
 301                         }
 302                         ITmfStateInterval lastExecNameInterval = prevFullState == null || execNameQuark >= prevFullState.size() ? null : prevFullState.get(execNameQuark);
 303                         long lastExecNameStartTime = lastExecNameInterval == null ? -1 : lastExecNameInterval.getStartTime();
 304                         long lastExecNameEndTime = lastExecNameInterval == null ? -1 : lastExecNameInterval.getEndTime() + 1;
 305                         long lastPpidStartTime = prevFullState == null || ppidQuark >= prevFullState.size() ? -1 : prevFullState.get(ppidQuark).getStartTime();
 306                         for (List<ITmfStateInterval> fullState : fullStates) {
 307                             if (monitor.isCanceled()) {
 308                                 return;
 309                             }
 310                             if (execNameQuark >= fullState.size() || ppidQuark >= fullState.size()) {
 311                                 /* No information on this thread (yet?), skip it for now */
 312                                 continue;
 313                             }
 314                             ITmfStateInterval execNameInterval = fullState.get(execNameQuark);
 315                             ITmfStateInterval ppidInterval = fullState.get(ppidQuark);
 316                             long startTime = execNameInterval.getStartTime();
 317                             long endTime = execNameInterval.getEndTime() + 1;
 318                             if (startTime == lastExecNameStartTime && ppidInterval.getStartTime() == lastPpidStartTime) {
 319                                 continue;
 320                             }
 321                             boolean isNull = execNameInterval.getStateValue().isNull();
 322                             if (isNull && lastExecNameEndTime < startTime && lastExecNameEndTime != -1) {
 323                                 /*
 324                                  * There was a non-null interval in between the
 325                                  * full states, try to use it.
 326                                  */
 327                                 try {
 328                                     execNameInterval = ssq.querySingleState(startTime - 1, execNameQuark);
 329                                     ppidInterval = ssq.querySingleState(startTime - 1, ppidQuark);
 330                                     startTime = execNameInterval.getStartTime();
 331                                     endTime = execNameInterval.getEndTime() + 1;
 332                                 } catch (AttributeNotFoundException e) {
 333                                     Activator.getDefault().logError(e.getMessage());
 334                                 } catch (StateSystemDisposedException e) {
 335                                     /* ignored */
 336                                 }
 337                             }
 338                             if (!execNameInterval.getStateValue().isNull() &&
 339                                     execNameInterval.getStateValue().getType() == ITmfStateValue.Type.STRING) {
 340                                 String execName = execNameInterval.getStateValue().unboxStr();
 341                                 int ppid = ppidInterval.getStateValue().unboxInt();
 342                                 ControlFlowEntry entry = entryMap.get(entryKey);
 343                                 if (entry == null) {
 344                                     entry = new ControlFlowEntry(threadQuark, trace, execName, threadId, ppid, startTime, endTime);
 345                                     entryList.add(entry);
 346                                     entryMap.put(entryKey, entry);
 347                                 } else {
 348                                     /*
 349                                      * Update the name of the entry to the
 350                                      * latest execName and the parent thread id
 351                                      * to the latest ppid.
 352                                      */
 353                                     entry.setName(execName);
 354                                     entry.setParentThreadId(ppid);
 355                                     entry.updateEndTime(endTime);
 356                                 }
 357                             }
 358                             if (isNull) {
 359                                 entryMap.remove(entryKey);
 360                             }
 361                             lastExecNameStartTime = startTime;
 362                             lastExecNameEndTime = endTime;
 363                             lastPpidStartTime = ppidInterval.getStartTime();
 364                         }
 365                     }
 366                     updateTree(entryList, parentTrace, ssq);
 367
 368                     for (final TimeGraphEntry entry : getEntryList(ssq)) {
 369                         if (monitor.isCanceled()) {
 370                             return;
 371                         }
 372                         buildStatusEvents(trace, parentTrace, ssq, fullStates, prevFullState, (ControlFlowEntry) entry, monitor, qStart, qEnd);
 373                     }
 374                 }
 375             });
 376
 377             if (parentTrace.equals(getTrace())) {
 378                 refresh();
 379             }
 380
 381             start = end;
 382         }
 383     }
 384
 385     private void updateTree(List<ControlFlowEntry> entryList, ITmfTrace parentTrace, ITmfStateSystem ss) {
 386         List<TimeGraphEntry> rootListToAdd = new ArrayList<>();
 387         List<TimeGraphEntry> rootListToRemove = new ArrayList<>();
 388         List<TimeGraphEntry> rootList = getEntryList(ss);
 389
 390         for (ControlFlowEntry entry : entryList) {
 391             boolean root = (entry.getParent() == null);
 392             if (root && entry.getParentThreadId() > 0) {
 393                 for (ControlFlowEntry parent : entryList) {
 394                     /*
 395                      * Associate the parent entry only if their time overlap. A
 396                      * child entry may start before its parent, for example at
 397                      * the beginning of the trace if a parent has not yet
 398                      * appeared in the state system. We just want to make sure
 399                      * that the entry didn't start after the parent ended or
 400                      * ended before the parent started.
 401                      */
 402                     if (parent.getThreadId() == entry.getParentThreadId() &&
 403                             !(entry.getStartTime() > parent.getEndTime() ||
 404                             entry.getEndTime() < parent.getStartTime())) {
 405                         parent.addChild(entry);
 406                         root = false;
 407                         if (rootList != null && rootList.contains(entry)) {
 408                             rootListToRemove.add(entry);
 409                         }
 410                         break;
 411                     }
 412                 }
 413             }
 414             if (root && (rootList == null || !rootList.contains(entry))) {
 415                 rootListToAdd.add(entry);
 416             }
 417         }
 418
 419         addToEntryList(parentTrace, ss, rootListToAdd);
 420         removeFromEntryList(parentTrace, ss, rootListToRemove);
 421     }
 422
 423     private void buildStatusEvents(ITmfTrace trace, ITmfTrace parentTrace, ITmfStateSystem ss, @NonNull List<List<ITmfStateInterval>> fullStates,
 424             @Nullable List<ITmfStateInterval> prevFullState, ControlFlowEntry entry, @NonNull IProgressMonitor monitor, long start, long end) {
 425         if (start < entry.getEndTime() && end > entry.getStartTime()) {
 426             List<ITimeEvent> eventList = getEventList(entry, ss, fullStates, prevFullState, monitor);
 427             if (eventList == null) {
 428                 return;
 429             }
 430             for (ITimeEvent event : eventList) {
 431                 entry.addEvent(event);
 432             }
 433             if (parentTrace.equals(getTrace())) {
 434                 redraw();
 435             }
 436         }
 437         for (ITimeGraphEntry child : entry.getChildren()) {
 438             if (monitor.isCanceled()) {
 439                 return;
 440             }
 441             buildStatusEvents(trace, parentTrace, ss, fullStates, prevFullState, (ControlFlowEntry) child, monitor, start, end);
 442         }
 443     }
 444
 445     @Override
 446     protected @Nullable List<ITimeEvent> getEventList(@NonNull TimeGraphEntry tgentry, ITmfStateSystem ss,
 447             @NonNull List<List<ITmfStateInterval>> fullStates, @Nullable List<ITmfStateInterval> prevFullState, @NonNull IProgressMonitor monitor) {
 448         List<ITimeEvent> eventList = null;
 449         if (!(tgentry instanceof ControlFlowEntry)) {
 450             return eventList;
 451         }
 452         ControlFlowEntry entry = (ControlFlowEntry) tgentry;
 453         try {
 454             int threadQuark = entry.getThreadQuark();
 455             int statusQuark = ss.getQuarkRelative(threadQuark, Attributes.STATUS);
 456             eventList = new ArrayList<>(fullStates.size());
 457             ITmfStateInterval lastInterval = prevFullState == null || statusQuark >= prevFullState.size() ? null : prevFullState.get(statusQuark);
 458             long lastStartTime = lastInterval == null ? -1 : lastInterval.getStartTime();
 459             long lastEndTime = lastInterval == null ? -1 : lastInterval.getEndTime() + 1;
 460             for (List<ITmfStateInterval> fullState : fullStates) {
 461                 if (monitor.isCanceled()) {
 462                     return null;
 463                 }
 464                 if (statusQuark >= fullState.size()) {
 465                     /* No information on this thread (yet?), skip it for now */
 466                     continue;
 467                 }
 468                 ITmfStateInterval statusInterval = fullState.get(statusQuark);
 469                 long time = statusInterval.getStartTime();
 470                 if (time == lastStartTime) {
 471                     continue;
 472                 }
 473                 long duration = statusInterval.getEndTime() - time + 1;
 474                 int status = -1;
 475                 try {
 476                     status = statusInterval.getStateValue().unboxInt();
 477                 } catch (StateValueTypeException e) {
 478                     Activator.getDefault().logError(e.getMessage());
 479                 }
 480                 if (lastEndTime != time && lastEndTime != -1) {
 481                     eventList.add(new TimeEvent(entry, lastEndTime, time - lastEndTime));
 482                 }
 483                 if (!statusInterval.getStateValue().isNull()) {
 484                     eventList.add(new TimeEvent(entry, time, duration, status));
 485                 } else {
 486                     eventList.add(new NullTimeEvent(entry, time, duration));
 487                 }
 488                 lastStartTime = time;
 489                 lastEndTime = time + duration;
 490             }
 491         } catch (AttributeNotFoundException | TimeRangeException e) {
 492             Activator.getDefault().logError(e.getMessage());
 493         }
 494         return eventList;
 495     }
 496
 497     /**
 498      * Returns a value corresponding to the selected entry.
 499      *
 500      * Used in conjunction with synchingToTime to change the selected entry. If
 501      * one of these methods is overridden in child class, then both should be.
 502      *
 503      * @param time
 504      *            The currently selected time
 505      * @return a value identifying the entry
 506      */
 507     private int getSelectionValue(long time) {
 508         int thread = -1;
 509         for (ITmfTrace trace : TmfTraceManager.getTraceSet(getTrace())) {
 510             if (thread > 0) {
 511                 break;
 512             }
 513             ITmfStateSystem ssq = TmfStateSystemAnalysisModule.getStateSystem(trace, KernelAnalysisModule.ID);
 514             if (ssq == null) {
 515                 continue;
 516             }
 517             if (time >= ssq.getStartTime() && time <= ssq.getCurrentEndTime()) {
 518                 List<Integer> currentThreadQuarks = ssq.getQuarks(Attributes.CPUS, "*", Attributes.CURRENT_THREAD); //$NON-NLS-1$
 519                 for (int currentThreadQuark : currentThreadQuarks) {
 520                     try {
 521                         ITmfStateInterval currentThreadInterval = ssq.querySingleState(time, currentThreadQuark);
 522                         int currentThread = currentThreadInterval.getStateValue().unboxInt();
 523                         if (currentThread > 0) {
 524                             int statusQuark = ssq.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThread), Attributes.STATUS);
 525                             ITmfStateInterval statusInterval = ssq.querySingleState(time, statusQuark);
 526                             if (statusInterval.getStartTime() == time) {
 527                                 thread = currentThread;
 528                                 break;
 529                             }
 530                         }
 531                     } catch (AttributeNotFoundException | TimeRangeException | StateValueTypeException e) {
 532                         Activator.getDefault().logError(e.getMessage());
 533                     } catch (StateSystemDisposedException e) {
 534                         /* Ignored */
 535                     }
 536                 }
 537             }
 538         }
 539         return thread;
 540     }
 541
 542     @Override
 543     protected void synchingToTime(long time) {
 544         int selected = getSelectionValue(time);
 545         if (selected > 0) {
 546             for (Object element : getTimeGraphViewer().getExpandedElements()) {
 547                 if (element instanceof ControlFlowEntry) {
 548                     ControlFlowEntry entry = (ControlFlowEntry) element;
 549                     if (entry.getThreadId() == selected) {
 550                         getTimeGraphCombo().setSelection(entry);
 551                         break;
 552                     }
 553                 }
 554             }
 555         }
 556     }
 557
 558     @Override
 559     protected @NonNull List<ILinkEvent> getLinkList(ITmfStateSystem ss,
 560             @NonNull List<List<ITmfStateInterval>> fullStates, @Nullable List<ITmfStateInterval> prevFullState, @NonNull IProgressMonitor monitor) {
 561         List<ILinkEvent> list = new ArrayList<>();
 562         List<TimeGraphEntry> entryList = getEntryList(ss);
 563         if (entryList == null) {
 564             return list;
 565         }
 566         for (ITmfTrace trace : TmfTraceManager.getTraceSet(getTrace())) {
 567             List<Integer> currentThreadQuarks = ss.getQuarks(Attributes.CPUS, "*", Attributes.CURRENT_THREAD); //$NON-NLS-1$
 568             for (int currentThreadQuark : currentThreadQuarks) {
 569                 if (currentThreadQuark >= fullStates.get(0).size()) {
 570                     /* No information on this cpu (yet?), skip it for now */
 571                     continue;
 572                 }
 573                 List<ITmfStateInterval> currentThreadIntervals = new ArrayList<>(fullStates.size() + 2);
 574                 try {
 575                     /*
 576                      * Add the previous interval if it is the first query
 577                      * iteration and the first interval has currentThread=0. Add
 578                      * the following interval if the last interval has
 579                      * currentThread=0. These are diagonal arrows crossing the
 580                      * query iteration range.
 581                      */
 582                     if (prevFullState == null) {
 583                         ITmfStateInterval currentThreadInterval = fullStates.get(0).get(currentThreadQuark);
 584                         if (currentThreadInterval.getStateValue().unboxInt() == 0) {
 585                             long start = Math.max(currentThreadInterval.getStartTime() - 1, ss.getStartTime());
 586                             currentThreadIntervals.add(ss.querySingleState(start, currentThreadQuark));
 587                         }
 588                     }
 589                     for (List<ITmfStateInterval> fullState : fullStates) {
 590                         currentThreadIntervals.add(fullState.get(currentThreadQuark));
 591                     }
 592                     ITmfStateInterval currentThreadInterval = fullStates.get(fullStates.size() - 1).get(currentThreadQuark);
 593                     if (currentThreadInterval.getStateValue().unboxInt() == 0) {
 594                         long end = Math.min(currentThreadInterval.getEndTime() + 1, ss.getCurrentEndTime());
 595                         currentThreadIntervals.add(ss.querySingleState(end, currentThreadQuark));
 596                     }
 597                 } catch (AttributeNotFoundException e) {
 598                     Activator.getDefault().logError(e.getMessage());
 599                     return list;
 600                 } catch (StateSystemDisposedException e) {
 601                     /* Ignored */
 602                     return list;
 603                 }
 604                 int prevThread = 0;
 605                 long prevEnd = 0;
 606                 long lastEnd = 0;
 607                 for (ITmfStateInterval currentThreadInterval : currentThreadIntervals) {
 608                     if (monitor.isCanceled()) {
 609                         return list;
 610                     }
 611                     if (currentThreadInterval.getEndTime() + 1 == lastEnd) {
 612                         continue;
 613                     }
 614                     long time = currentThreadInterval.getStartTime();
 615                     if (time != lastEnd) {
 616                         // don't create links where there are gaps in intervals due to the resolution
 617                         prevThread = 0;
 618                         prevEnd = 0;
 619                     }
 620                     int thread = currentThreadInterval.getStateValue().unboxInt();
 621                     if (thread > 0 && prevThread > 0) {
 622                         ITimeGraphEntry prevEntry = findEntry(entryList, trace, prevThread);
 623                         ITimeGraphEntry nextEntry = findEntry(entryList, trace, thread);
 624                         list.add(new TimeLinkEvent(prevEntry, nextEntry, prevEnd, time - prevEnd, 0));
 625                     }
 626                     lastEnd = currentThreadInterval.getEndTime() + 1;
 627                     if (thread != 0) {
 628                         prevThread = thread;
 629                         prevEnd = lastEnd;
 630                     }
 631                 }
 632             }
 633         }
 634         return list;
 635     }
 636
 637     private ControlFlowEntry findEntry(List<? extends ITimeGraphEntry> entryList, ITmfTrace trace, int threadId) {
 638         for (ITimeGraphEntry entry : entryList) {
 639             if (entry instanceof ControlFlowEntry) {
 640                 ControlFlowEntry controlFlowEntry = (ControlFlowEntry) entry;
 641                 if (controlFlowEntry.getThreadId() == threadId && controlFlowEntry.getTrace() == trace) {
 642                     return controlFlowEntry;
 643                 } else if (entry.hasChildren()) {
 644                     controlFlowEntry = findEntry(entry.getChildren(), trace, threadId);
 645                     if (controlFlowEntry != null) {
 646                         return controlFlowEntry;
 647                     }
 648                 }
 649             }
 650         }
 651         return null;
 652     }
 653 }