org.eclipse.linuxtools.lttng2.kernel.ui/src/org/eclipse/linuxtools/internal/lttng2/kernel/ui/views/controlflow/ControlFlowView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2013 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  *   Patrick Tasse - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.internal.lttng2.kernel.ui.views.controlflow;
  14
  15 import java.util.ArrayList;
  16 import java.util.Arrays;
  17 import java.util.Collections;
  18 import java.util.Comparator;
  19 import java.util.HashMap;
  20 import java.util.List;
  21
  22 import org.eclipse.core.runtime.IProgressMonitor;
  23 import org.eclipse.core.runtime.NullProgressMonitor;
  24 import org.eclipse.jface.action.Action;
  25 import org.eclipse.jface.action.IToolBarManager;
  26 import org.eclipse.jface.action.Separator;
  27 import org.eclipse.jface.viewers.ILabelProviderListener;
  28 import org.eclipse.jface.viewers.ITableLabelProvider;
  29 import org.eclipse.jface.viewers.ITreeContentProvider;
  30 import org.eclipse.jface.viewers.Viewer;
  31 import org.eclipse.linuxtools.internal.lttng2.kernel.core.Attributes;
  32 import org.eclipse.linuxtools.internal.lttng2.kernel.ui.Messages;
  33 import org.eclipse.linuxtools.lttng2.kernel.core.trace.LttngKernelTrace;
  34 import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfTimestamp;
  35 import org.eclipse.linuxtools.tmf.core.exceptions.AttributeNotFoundException;
  36 import org.eclipse.linuxtools.tmf.core.exceptions.StateSystemDisposedException;
  37 import org.eclipse.linuxtools.tmf.core.exceptions.StateValueTypeException;
  38 import org.eclipse.linuxtools.tmf.core.exceptions.TimeRangeException;
  39 import org.eclipse.linuxtools.tmf.core.interval.ITmfStateInterval;
  40 import org.eclipse.linuxtools.tmf.core.signal.TmfRangeSynchSignal;
  41 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler;
  42 import org.eclipse.linuxtools.tmf.core.signal.TmfTimeSynchSignal;
  43 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceClosedSignal;
  44 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceSelectedSignal;
  45 import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateSystem;
  46 import org.eclipse.linuxtools.tmf.core.statevalue.ITmfStateValue;
  47 import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp;
  48 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimeRange;
  49 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp;
  50 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  51 import org.eclipse.linuxtools.tmf.ui.views.TmfView;
  52 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphRangeListener;
  53 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphSelectionListener;
  54 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphTimeListener;
  55 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphCombo;
  56 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphRangeUpdateEvent;
  57 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphSelectionEvent;
  58 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphTimeEvent;
  59 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeEvent;
  60 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
  61 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.TimeEvent;
  62 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils;
  63 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils.Resolution;
  64 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils.TimeFormat;
  65 import org.eclipse.swt.SWT;
  66 import org.eclipse.swt.graphics.Image;
  67 import org.eclipse.swt.widgets.Composite;
  68 import org.eclipse.swt.widgets.Display;
  69 import org.eclipse.swt.widgets.TreeColumn;
  70 import org.eclipse.ui.IActionBars;
  71
  72 /**
  73  * The Control Flow view main object
  74  *
  75  */
  76 public class ControlFlowView extends TmfView {
  77
  78     // ------------------------------------------------------------------------
  79     // Constants
  80     // ------------------------------------------------------------------------
  81
  82     /**
  83      * View ID.
  84      */
  85     public static final String ID = "org.eclipse.linuxtools.lttng2.kernel.ui.views.controlflow"; //$NON-NLS-1$
  86
  87     private static final String PROCESS_COLUMN    = Messages.ControlFlowView_processColumn;
  88     private static final String TID_COLUMN        = Messages.ControlFlowView_tidColumn;
  89     private static final String PTID_COLUMN       = Messages.ControlFlowView_ptidColumn;
  90     private static final String BIRTH_TIME_COLUMN = Messages.ControlFlowView_birthTimeColumn;
  91     private static final String TRACE_COLUMN      = Messages.ControlFlowView_traceColumn;
  92
  93     private final String[] COLUMN_NAMES = new String[] {
  94             PROCESS_COLUMN,
  95             TID_COLUMN,
  96             PTID_COLUMN,
  97             BIRTH_TIME_COLUMN,
  98             TRACE_COLUMN
  99     };
 100
 101     private final String[] FILTER_COLUMN_NAMES = new String[] {
 102             PROCESS_COLUMN,
 103             TID_COLUMN
 104     };
 105
 106     /**
 107      * Redraw state enum
 108      */
 109     private enum State { IDLE, BUSY, PENDING }
 110
 111     // ------------------------------------------------------------------------
 112     // Fields
 113     // ------------------------------------------------------------------------
 114
 115     // The timegraph combo
 116     private TimeGraphCombo fTimeGraphCombo;
 117
 118     // The selected trace
 119     private ITmfTrace fTrace;
 120
 121     // The timegraph entry list
 122     private ArrayList<ControlFlowEntry> fEntryList;
 123
 124     // The trace to entry list hash map
 125     final private HashMap<ITmfTrace, ArrayList<ControlFlowEntry>> fEntryListMap = new HashMap<ITmfTrace, ArrayList<ControlFlowEntry>>();
 126
 127     // The trace to build thread hash map
 128     final private HashMap<ITmfTrace, BuildThread> fBuildThreadMap = new HashMap<ITmfTrace, BuildThread>();
 129
 130     // The start time
 131     private long fStartTime;
 132
 133     // The end time
 134     private long fEndTime;
 135
 136     // The display width
 137     private final int fDisplayWidth;
 138
 139     // The zoom thread
 140     private ZoomThread fZoomThread;
 141
 142     // The next resource action
 143     private Action fNextResourceAction;
 144
 145     // The previous resource action
 146     private Action fPreviousResourceAction;
 147
 148     // A comparator class
 149     private final ControlFlowEntryComparator fControlFlowEntryComparator = new ControlFlowEntryComparator();
 150
 151     // The redraw state used to prevent unnecessary queuing of display runnables
 152     private State fRedrawState = State.IDLE;
 153
 154     // The redraw synchronization object
 155     final private Object fSyncObj = new Object();
 156
 157     // ------------------------------------------------------------------------
 158     // Classes
 159     // ------------------------------------------------------------------------
 160
 161     private class TreeContentProvider implements ITreeContentProvider {
 162
 163         @Override
 164         public void dispose() {
 165         }
 166
 167         @Override
 168         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 169         }
 170
 171         @Override
 172         public Object[] getElements(Object inputElement) {
 173             return (ITimeGraphEntry[]) inputElement;
 174         }
 175
 176         @Override
 177         public Object[] getChildren(Object parentElement) {
 178             ITimeGraphEntry entry = (ITimeGraphEntry) parentElement;
 179             List<? extends ITimeGraphEntry> children = entry.getChildren();
 180             return children.toArray(new ITimeGraphEntry[children.size()]);
 181         }
 182
 183         @Override
 184         public Object getParent(Object element) {
 185             ITimeGraphEntry entry = (ITimeGraphEntry) element;
 186             return entry.getParent();
 187         }
 188
 189         @Override
 190         public boolean hasChildren(Object element) {
 191             ITimeGraphEntry entry = (ITimeGraphEntry) element;
 192             return entry.hasChildren();
 193         }
 194
 195     }
 196
 197     private class TreeLabelProvider implements ITableLabelProvider {
 198
 199         @Override
 200         public void addListener(ILabelProviderListener listener) {
 201         }
 202
 203         @Override
 204         public void dispose() {
 205         }
 206
 207         @Override
 208         public boolean isLabelProperty(Object element, String property) {
 209             return false;
 210         }
 211
 212         @Override
 213         public void removeListener(ILabelProviderListener listener) {
 214         }
 215
 216         @Override
 217         public Image getColumnImage(Object element, int columnIndex) {
 218             return null;
 219         }
 220
 221         @Override
 222         public String getColumnText(Object element, int columnIndex) {
 223             ControlFlowEntry entry = (ControlFlowEntry) element;
 224             if (columnIndex == 0) {
 225                 return entry.getName();
 226             } else if (columnIndex == 1) {
 227                 return Integer.toString(entry.getThreadId());
 228             } else if (columnIndex == 2) {
 229                 if (entry.getParentThreadId() > 0) {
 230                     return Integer.toString(entry.getParentThreadId());
 231                 }
 232             } else if (columnIndex == 3) {
 233                 return Utils.formatTime(entry.getStartTime(), TimeFormat.CALENDAR, Resolution.NANOSEC);
 234             } else if (columnIndex == 4) {
 235                 return entry.getTrace().getName();
 236             }
 237             return ""; //$NON-NLS-1$
 238         }
 239
 240     }
 241
 242     private static class ControlFlowEntryComparator implements Comparator<ITimeGraphEntry> {
 243
 244         @Override
 245         public int compare(ITimeGraphEntry o1, ITimeGraphEntry o2) {
 246             int result = 0;
 247
 248             if ((o1 instanceof ControlFlowEntry) && (o2 instanceof ControlFlowEntry)) {
 249                 ControlFlowEntry entry1 = (ControlFlowEntry) o1;
 250                 ControlFlowEntry entry2 = (ControlFlowEntry) o2;
 251                 result = entry1.getTrace().getStartTime().compareTo(entry2.getTrace().getStartTime());
 252                 if (result == 0) {
 253                     result = entry1.getTrace().getName().compareTo(entry2.getTrace().getName());
 254                 }
 255                 if (result == 0) {
 256                     result = entry1.getThreadId() < entry2.getThreadId() ? -1 : entry1.getThreadId() > entry2.getThreadId() ? 1 : 0;
 257                 }
 258             }
 259
 260             if (result == 0) {
 261                 result = o1.getStartTime() < o2.getStartTime() ? -1 : o1.getStartTime() > o2.getStartTime() ? 1 : 0;
 262             }
 263
 264             return result;
 265         }
 266     }
 267
 268     private class BuildThread extends Thread {
 269         private final ITmfTrace fBuildTrace;
 270         private final IProgressMonitor fMonitor;
 271
 272         public BuildThread(ITmfTrace trace) {
 273             super("ControlFlowView build"); //$NON-NLS-1$
 274             fBuildTrace = trace;
 275             fMonitor = new NullProgressMonitor();
 276         }
 277
 278         @Override
 279         public void run() {
 280             buildEventList(fBuildTrace, fMonitor);
 281             synchronized (fBuildThreadMap) {
 282                 fBuildThreadMap.remove(this);
 283             }
 284         }
 285
 286         public void cancel() {
 287             fMonitor.setCanceled(true);
 288         }
 289     }
 290
 291     private class ZoomThread extends Thread {
 292         private final ArrayList<ControlFlowEntry> fZoomEntryList;
 293         private final long fZoomStartTime;
 294         private final long fZoomEndTime;
 295         private final long fResolution;
 296         private final IProgressMonitor fMonitor;
 297
 298         public ZoomThread(ArrayList<ControlFlowEntry> entryList, long startTime, long endTime) {
 299             super("ControlFlowView zoom"); //$NON-NLS-1$
 300             fZoomEntryList = entryList;
 301             fZoomStartTime = startTime;
 302             fZoomEndTime = endTime;
 303             fResolution = Math.max(1, (fZoomEndTime - fZoomStartTime) / fDisplayWidth);
 304             fMonitor = new NullProgressMonitor();
 305         }
 306
 307         @Override
 308         public void run() {
 309             if (fZoomEntryList == null) {
 310                 return;
 311             }
 312             for (ControlFlowEntry entry : fZoomEntryList) {
 313                 if (fMonitor.isCanceled()) {
 314                     break;
 315                 }
 316                 zoom(entry, fMonitor);
 317             }
 318         }
 319
 320         private void zoom(ControlFlowEntry entry, IProgressMonitor monitor) {
 321             if (fZoomStartTime <= fStartTime && fZoomEndTime >= fEndTime) {
 322                 entry.setZoomedEventList(null);
 323             } else {
 324                 List<ITimeEvent> zoomedEventList = getEventList(entry, fZoomStartTime, fZoomEndTime, fResolution, monitor);
 325                 if (zoomedEventList != null) {
 326                     entry.setZoomedEventList(zoomedEventList);
 327                 }
 328             }
 329             redraw();
 330             for (ControlFlowEntry child : entry.getChildren()) {
 331                 if (fMonitor.isCanceled()) {
 332                     return;
 333                 }
 334                 zoom(child, monitor);
 335             }
 336         }
 337
 338         public void cancel() {
 339             fMonitor.setCanceled(true);
 340         }
 341     }
 342
 343     // ------------------------------------------------------------------------
 344     // Constructors
 345     // ------------------------------------------------------------------------
 346
 347     /**
 348      * Constructor
 349      */
 350     public ControlFlowView() {
 351         super(ID);
 352         fDisplayWidth = Display.getDefault().getBounds().width;
 353     }
 354
 355     // ------------------------------------------------------------------------
 356     // ViewPart
 357     // ------------------------------------------------------------------------
 358
 359     @Override
 360     public void createPartControl(Composite parent) {
 361         fTimeGraphCombo = new TimeGraphCombo(parent, SWT.NONE);
 362
 363         fTimeGraphCombo.setTreeContentProvider(new TreeContentProvider());
 364
 365         fTimeGraphCombo.setTreeLabelProvider(new TreeLabelProvider());
 366
 367         fTimeGraphCombo.setTimeGraphProvider(new ControlFlowPresentationProvider());
 368
 369         fTimeGraphCombo.setTreeColumns(COLUMN_NAMES);
 370
 371         fTimeGraphCombo.setFilterContentProvider(new TreeContentProvider());
 372
 373         fTimeGraphCombo.setFilterLabelProvider(new TreeLabelProvider());
 374
 375         fTimeGraphCombo.setFilterColumns(FILTER_COLUMN_NAMES);
 376
 377         fTimeGraphCombo.getTimeGraphViewer().addRangeListener(new ITimeGraphRangeListener() {
 378             @Override
 379             public void timeRangeUpdated(TimeGraphRangeUpdateEvent event) {
 380                 final long startTime = event.getStartTime();
 381                 final long endTime = event.getEndTime();
 382                 TmfTimeRange range = new TmfTimeRange(new CtfTmfTimestamp(startTime), new CtfTmfTimestamp(endTime));
 383                 TmfTimestamp time = new CtfTmfTimestamp(fTimeGraphCombo.getTimeGraphViewer().getSelectedTime());
 384                 broadcast(new TmfRangeSynchSignal(ControlFlowView.this, range, time));
 385                 if (fZoomThread != null) {
 386                     fZoomThread.cancel();
 387                 }
 388                 startZoomThread(startTime, endTime);
 389             }
 390         });
 391
 392         fTimeGraphCombo.getTimeGraphViewer().addTimeListener(new ITimeGraphTimeListener() {
 393             @Override
 394             public void timeSelected(TimeGraphTimeEvent event) {
 395                 long time = event.getTime();
 396                 broadcast(new TmfTimeSynchSignal(ControlFlowView.this, new CtfTmfTimestamp(time)));
 397             }
 398         });
 399
 400         fTimeGraphCombo.addSelectionListener(new ITimeGraphSelectionListener() {
 401             @Override
 402             public void selectionChanged(TimeGraphSelectionEvent event) {
 403                 //ITimeGraphEntry selection = event.getSelection();
 404             }
 405         });
 406
 407         fTimeGraphCombo.getTimeGraphViewer().setTimeFormat(TimeFormat.CALENDAR);
 408
 409         // View Action Handling
 410         makeActions();
 411         contributeToActionBars();
 412
 413         ITmfTrace trace = getActiveTrace();
 414         if (trace != null) {
 415             traceSelected(new TmfTraceSelectedSignal(this, trace));
 416         }
 417
 418         // make selection available to other views
 419         getSite().setSelectionProvider(fTimeGraphCombo.getTreeViewer());
 420     }
 421
 422     @Override
 423     public void setFocus() {
 424         fTimeGraphCombo.setFocus();
 425     }
 426
 427     // ------------------------------------------------------------------------
 428     // Signal handlers
 429     // ------------------------------------------------------------------------
 430
 431     /**
 432      * Handler for the trace selected signal
 433      *
 434      * @param signal
 435      *            The signal that's received
 436      */
 437     @TmfSignalHandler
 438     public void traceSelected(final TmfTraceSelectedSignal signal) {
 439         if (signal.getTrace() == fTrace) {
 440             return;
 441         }
 442         fTrace = signal.getTrace();
 443
 444         synchronized (fEntryListMap) {
 445             fEntryList = fEntryListMap.get(fTrace);
 446             if (fEntryList == null) {
 447                 synchronized (fBuildThreadMap) {
 448                     BuildThread buildThread = new BuildThread(fTrace);
 449                     fBuildThreadMap.put(fTrace, buildThread);
 450                     buildThread.start();
 451                 }
 452             } else {
 453                 fStartTime = fTrace.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 454                 fEndTime = fTrace.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 455                 refresh();
 456             }
 457         }
 458     }
 459
 460     /**
 461      * Trace is closed: clear the data structures and the view
 462      *
 463      * @param signal the signal received
 464      */
 465     @TmfSignalHandler
 466     public void traceClosed(final TmfTraceClosedSignal signal) {
 467         synchronized (fBuildThreadMap) {
 468             BuildThread buildThread = fBuildThreadMap.remove(signal.getTrace());
 469             if (buildThread != null) {
 470                 buildThread.cancel();
 471             }
 472         }
 473         synchronized (fEntryListMap) {
 474             fEntryListMap.remove(signal.getTrace());
 475         }
 476         if (signal.getTrace() == fTrace) {
 477             fTrace = null;
 478             fStartTime = 0;
 479             fEndTime = 0;
 480             if (fZoomThread != null) {
 481                 fZoomThread.cancel();
 482             }
 483             refresh();
 484         }
 485     }
 486
 487     /**
 488      * Handler for the synch signal
 489      *
 490      * @param signal
 491      *            The signal that's received
 492      */
 493     @TmfSignalHandler
 494     public void synchToTime(final TmfTimeSynchSignal signal) {
 495         if (signal.getSource() == this || fTrace == null) {
 496             return;
 497         }
 498         final long time = signal.getCurrentTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 499
 500         int thread = -1;
 501         for (ITmfTrace trace : fTrace.getTraces()) {
 502             if (thread > 0) {
 503                 break;
 504             }
 505             if (trace instanceof LttngKernelTrace) {
 506                 LttngKernelTrace ctfKernelTrace = (LttngKernelTrace) trace;
 507                 ITmfStateSystem ssq = ctfKernelTrace.getStateSystems().get(LttngKernelTrace.STATE_ID);
 508                 if (time >= ssq.getStartTime() && time <= ssq.getCurrentEndTime()) {
 509                     List<Integer> currentThreadQuarks = ssq.getQuarks(Attributes.CPUS, "*", Attributes.CURRENT_THREAD);  //$NON-NLS-1$
 510                     for (int currentThreadQuark : currentThreadQuarks) {
 511                         try {
 512                             ITmfStateInterval currentThreadInterval = ssq.querySingleState(time, currentThreadQuark);
 513                             int currentThread = currentThreadInterval.getStateValue().unboxInt();
 514                             if (currentThread > 0) {
 515                                 int statusQuark = ssq.getQuarkAbsolute(Attributes.THREADS, Integer.toString(currentThread), Attributes.STATUS);
 516                                 ITmfStateInterval statusInterval = ssq.querySingleState(time, statusQuark);
 517                                 if (statusInterval.getStartTime() == time) {
 518                                     thread = currentThread;
 519                                     break;
 520                                 }
 521                             }
 522                         } catch (AttributeNotFoundException e) {
 523                             e.printStackTrace();
 524                         } catch (TimeRangeException e) {
 525                             e.printStackTrace();
 526                         } catch (StateValueTypeException e) {
 527                             e.printStackTrace();
 528                         } catch (StateSystemDisposedException e) {
 529                             /* Ignored */
 530                         }
 531                     }
 532                 }
 533             }
 534         }
 535         final int selectedThread = thread;
 536
 537         Display.getDefault().asyncExec(new Runnable() {
 538             @Override
 539             public void run() {
 540                 if (fTimeGraphCombo.isDisposed()) {
 541                     return;
 542                 }
 543                 fTimeGraphCombo.getTimeGraphViewer().setSelectedTime(time, true);
 544                 startZoomThread(fTimeGraphCombo.getTimeGraphViewer().getTime0(), fTimeGraphCombo.getTimeGraphViewer().getTime1());
 545
 546                 if (selectedThread > 0) {
 547                     for (Object element : fTimeGraphCombo.getTimeGraphViewer().getExpandedElements()) {
 548                         if (element instanceof ControlFlowEntry) {
 549                             ControlFlowEntry entry = (ControlFlowEntry) element;
 550                             if (entry.getThreadId() == selectedThread) {
 551                                 fTimeGraphCombo.setSelection(entry);
 552                                 break;
 553                             }
 554                         }
 555                     }
 556                 }
 557             }
 558         });
 559     }
 560
 561     /**
 562      * Handler for the range sync signal
 563      *
 564      * @param signal
 565      *            The signal that's received
 566      */
 567     @TmfSignalHandler
 568     public void synchToRange(final TmfRangeSynchSignal signal) {
 569         if (signal.getSource() == this || fTrace == null) {
 570             return;
 571         }
 572         if (signal.getCurrentRange().getIntersection(fTrace.getTimeRange()) == null) {
 573             return;
 574         }
 575         final long startTime = signal.getCurrentRange().getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 576         final long endTime = signal.getCurrentRange().getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 577         final long time = signal.getCurrentTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 578         Display.getDefault().asyncExec(new Runnable() {
 579             @Override
 580             public void run() {
 581                 if (fTimeGraphCombo.isDisposed()) {
 582                     return;
 583                 }
 584                 fTimeGraphCombo.getTimeGraphViewer().setStartFinishTime(startTime, endTime);
 585                 fTimeGraphCombo.getTimeGraphViewer().setSelectedTime(time, false);
 586                 startZoomThread(startTime, endTime);
 587             }
 588         });
 589     }
 590
 591     // ------------------------------------------------------------------------
 592     // Internal
 593     // ------------------------------------------------------------------------
 594
 595     private void buildEventList(final ITmfTrace trace, IProgressMonitor monitor) {
 596         fStartTime = Long.MAX_VALUE;
 597         fEndTime = Long.MIN_VALUE;
 598         ArrayList<ControlFlowEntry> rootList = new ArrayList<ControlFlowEntry>();
 599         for (ITmfTrace aTrace : trace.getTraces()) {
 600             if (monitor.isCanceled()) {
 601                 return;
 602             }
 603             if (aTrace instanceof LttngKernelTrace) {
 604                 ArrayList<ControlFlowEntry> entryList = new ArrayList<ControlFlowEntry>();
 605                 LttngKernelTrace ctfKernelTrace = (LttngKernelTrace) aTrace;
 606                 ITmfStateSystem ssq = ctfKernelTrace.getStateSystems().get(LttngKernelTrace.STATE_ID);
 607                 if (!ssq.waitUntilBuilt()) {
 608                     return;
 609                 }
 610                 long start = ssq.getStartTime();
 611                 long end = ssq.getCurrentEndTime() + 1;
 612                 fStartTime = Math.min(fStartTime, start);
 613                 fEndTime = Math.max(fEndTime, end);
 614                 List<Integer> threadQuarks = ssq.getQuarks(Attributes.THREADS, "*"); //$NON-NLS-1$
 615                 for (int threadQuark : threadQuarks) {
 616                     if (monitor.isCanceled()) {
 617                         return;
 618                     }
 619                     String threadName = ssq.getAttributeName(threadQuark);
 620                     int threadId = -1;
 621                     try {
 622                         threadId = Integer.parseInt(threadName);
 623                     } catch (NumberFormatException e1) {
 624                         continue;
 625                     }
 626                     if (threadId == 0) { // ignore the swapper thread
 627                         continue;
 628                     }
 629                     int execNameQuark = -1;
 630                     try {
 631                         try {
 632                             execNameQuark = ssq.getQuarkRelative(threadQuark, Attributes.EXEC_NAME);
 633                         } catch (AttributeNotFoundException e) {
 634                             continue;
 635                         }
 636                         int ppidQuark = ssq.getQuarkRelative(threadQuark, Attributes.PPID);
 637                         List<ITmfStateInterval> execNameIntervals = ssq.queryHistoryRange(execNameQuark, start, end - 1); // use monitor when available in api
 638                         if (monitor.isCanceled()) {
 639                             return;
 640                         }
 641                         ControlFlowEntry entry = null;
 642                         for (ITmfStateInterval execNameInterval : execNameIntervals) {
 643                             if (monitor.isCanceled()) {
 644                                 return;
 645                             }
 646                             if (!execNameInterval.getStateValue().isNull() &&
 647                                     execNameInterval.getStateValue().getType() == ITmfStateValue.Type.STRING) {
 648                                 String execName = execNameInterval.getStateValue().unboxStr();
 649                                 long startTime = execNameInterval.getStartTime();
 650                                 long endTime = execNameInterval.getEndTime() + 1;
 651                                 int ppid = -1;
 652                                 if (ppidQuark != -1) {
 653                                     ITmfStateInterval ppidInterval = ssq.querySingleState(startTime, ppidQuark);
 654                                     ppid = ppidInterval.getStateValue().unboxInt();
 655                                 }
 656                                 if (entry == null) {
 657                                     entry = new ControlFlowEntry(threadQuark, ctfKernelTrace, execName, threadId, ppid, startTime, endTime);
 658                                     entryList.add(entry);
 659                                 } else {
 660                                     // update the name of the entry to the latest execName
 661                                     entry.setName(execName);
 662                                 }
 663                                 entry.addEvent(new TimeEvent(entry, startTime, endTime - startTime));
 664                             } else {
 665                                 entry = null;
 666                             }
 667                         }
 668                     } catch (AttributeNotFoundException e) {
 669                         e.printStackTrace();
 670                     } catch (TimeRangeException e) {
 671                         e.printStackTrace();
 672                     } catch (StateValueTypeException e) {
 673                         e.printStackTrace();
 674                     } catch (StateSystemDisposedException e) {
 675                         /* Ignored */
 676                     }
 677                 }
 678                 buildTree(entryList, rootList);
 679             }
 680             Collections.sort(rootList, fControlFlowEntryComparator);
 681             synchronized (fEntryListMap) {
 682                 fEntryListMap.put(trace, (ArrayList<ControlFlowEntry>) rootList.clone());
 683             }
 684             if (trace == fTrace) {
 685                 refresh();
 686             }
 687         }
 688         for (ControlFlowEntry entry : rootList) {
 689             if (monitor.isCanceled()) {
 690                 return;
 691             }
 692             buildStatusEvents(trace, entry, monitor);
 693         }
 694     }
 695
 696     private static void buildTree(ArrayList<ControlFlowEntry> entryList,
 697             ArrayList<ControlFlowEntry> rootList) {
 698         for (ControlFlowEntry entry : entryList) {
 699             boolean root = true;
 700             if (entry.getParentThreadId() > 0) {
 701                 for (ControlFlowEntry parent : entryList) {
 702                     if (parent.getThreadId() == entry.getParentThreadId() &&
 703                             entry.getStartTime() >= parent.getStartTime() &&
 704                             entry.getStartTime() <= parent.getEndTime()) {
 705                         parent.addChild(entry);
 706                         root = false;
 707                         break;
 708                     }
 709                 }
 710             }
 711             if (root) {
 712                 rootList.add(entry);
 713             }
 714         }
 715     }
 716
 717     private void buildStatusEvents(ITmfTrace trace, ControlFlowEntry entry, IProgressMonitor monitor) {
 718         ITmfStateSystem ssq = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
 719         long start = ssq.getStartTime();
 720         long end = ssq.getCurrentEndTime() + 1;
 721         long resolution = Math.max(1, (end - start) / fDisplayWidth);
 722         List<ITimeEvent> eventList = getEventList(entry, entry.getStartTime(), entry.getEndTime(), resolution, monitor);
 723         if (monitor.isCanceled()) {
 724             return;
 725         }
 726         entry.setEventList(eventList);
 727         if (trace == fTrace) {
 728             redraw();
 729         }
 730         for (ITimeGraphEntry child : entry.getChildren()) {
 731             if (monitor.isCanceled()) {
 732                 return;
 733             }
 734             buildStatusEvents(trace, (ControlFlowEntry) child, monitor);
 735         }
 736     }
 737
 738     private static List<ITimeEvent> getEventList(ControlFlowEntry entry,
 739             long startTime, long endTime, long resolution,
 740             IProgressMonitor monitor) {
 741         final long realStart = Math.max(startTime, entry.getStartTime());
 742         final long realEnd = Math.min(endTime, entry.getEndTime());
 743         if (realEnd <= realStart) {
 744             return null;
 745         }
 746         ITmfStateSystem ssq = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
 747         List<ITimeEvent> eventList = null;
 748         try {
 749             int statusQuark = ssq.getQuarkRelative(entry.getThreadQuark(), Attributes.STATUS);
 750             List<ITmfStateInterval> statusIntervals = ssq.queryHistoryRange(statusQuark, realStart, realEnd - 1, resolution, monitor);
 751             eventList = new ArrayList<ITimeEvent>(statusIntervals.size());
 752             long lastEndTime = -1;
 753             for (ITmfStateInterval statusInterval : statusIntervals) {
 754                 if (monitor.isCanceled()) {
 755                     return null;
 756                 }
 757                 long time = statusInterval.getStartTime();
 758                 long duration = statusInterval.getEndTime() - time + 1;
 759                 int status = -1;
 760                 try {
 761                     status = statusInterval.getStateValue().unboxInt();
 762                 } catch (StateValueTypeException e) {
 763                     e.printStackTrace();
 764                 }
 765                 if (lastEndTime != time && lastEndTime != -1) {
 766                     eventList.add(new TimeEvent(entry, lastEndTime, time - lastEndTime));
 767                 }
 768                 eventList.add(new ControlFlowEvent(entry, time, duration, status));
 769                 lastEndTime = time + duration;
 770             }
 771         } catch (AttributeNotFoundException e) {
 772             e.printStackTrace();
 773         } catch (TimeRangeException e) {
 774             e.printStackTrace();
 775         } catch (StateSystemDisposedException e) {
 776             /* Ignored */
 777         }
 778         return eventList;
 779     }
 780
 781     private void refresh() {
 782         Display.getDefault().asyncExec(new Runnable() {
 783             @Override
 784             public void run() {
 785                 if (fTimeGraphCombo.isDisposed()) {
 786                     return;
 787                 }
 788                 ITimeGraphEntry[] entries = null;
 789                 synchronized (fEntryListMap) {
 790                     fEntryList = fEntryListMap.get(fTrace);
 791                     if (fEntryList == null) {
 792                         fEntryList = new ArrayList<ControlFlowEntry>();
 793                     }
 794                     entries = fEntryList.toArray(new ITimeGraphEntry[0]);
 795                 }
 796                 Arrays.sort(entries, fControlFlowEntryComparator);
 797                 fTimeGraphCombo.setInput(entries);
 798                 fTimeGraphCombo.getTimeGraphViewer().setTimeBounds(fStartTime, fEndTime);
 799
 800                 long timestamp = fTrace == null ? 0 : fTrace.getCurrentTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 801                 long startTime = fTrace == null ? 0 : fTrace.getCurrentRange().getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 802                 long endTime = fTrace == null ? 0 : fTrace.getCurrentRange().getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 803                 startTime = Math.max(startTime, fStartTime);
 804                 endTime = Math.min(endTime, fEndTime);
 805                 fTimeGraphCombo.getTimeGraphViewer().setSelectedTime(timestamp, false);
 806                 fTimeGraphCombo.getTimeGraphViewer().setStartFinishTime(startTime, endTime);
 807
 808                 for (TreeColumn column : fTimeGraphCombo.getTreeViewer().getTree().getColumns()) {
 809                     column.pack();
 810                 }
 811
 812                 startZoomThread(startTime, endTime);
 813             }
 814         });
 815     }
 816
 817     private void redraw() {
 818         synchronized (fSyncObj) {
 819             if (fRedrawState == State.IDLE) {
 820                 fRedrawState = State.BUSY;
 821             } else {
 822                 fRedrawState = State.PENDING;
 823                 return;
 824             }
 825         }
 826         Display.getDefault().asyncExec(new Runnable() {
 827             @Override
 828             public void run() {
 829                 if (fTimeGraphCombo.isDisposed()) {
 830                     return;
 831                 }
 832                 fTimeGraphCombo.redraw();
 833                 fTimeGraphCombo.update();
 834                 synchronized (fSyncObj) {
 835                     if (fRedrawState == State.PENDING) {
 836                         fRedrawState = State.IDLE;
 837                         redraw();
 838                     } else {
 839                         fRedrawState = State.IDLE;
 840                     }
 841                 }
 842             }
 843         });
 844     }
 845
 846     private void startZoomThread(long startTime, long endTime) {
 847         if (fZoomThread != null) {
 848             fZoomThread.cancel();
 849         }
 850         fZoomThread = new ZoomThread(fEntryList, startTime, endTime);
 851         fZoomThread.start();
 852     }
 853
 854     private void makeActions() {
 855         fPreviousResourceAction = fTimeGraphCombo.getTimeGraphViewer().getPreviousItemAction();
 856         fPreviousResourceAction.setText(Messages.ControlFlowView_previousProcessActionNameText);
 857         fPreviousResourceAction.setToolTipText(Messages.ControlFlowView_previousProcessActionToolTipText);
 858         fNextResourceAction = fTimeGraphCombo.getTimeGraphViewer().getNextItemAction();
 859         fNextResourceAction.setText(Messages.ControlFlowView_nextProcessActionNameText);
 860         fNextResourceAction.setToolTipText(Messages.ControlFlowView_nextProcessActionToolTipText);
 861     }
 862
 863     private void contributeToActionBars() {
 864         IActionBars bars = getViewSite().getActionBars();
 865         fillLocalToolBar(bars.getToolBarManager());
 866     }
 867
 868     private void fillLocalToolBar(IToolBarManager manager) {
 869         manager.add(fTimeGraphCombo.getShowFilterAction());
 870         manager.add(fTimeGraphCombo.getTimeGraphViewer().getShowLegendAction());
 871         manager.add(new Separator());
 872         manager.add(fTimeGraphCombo.getTimeGraphViewer().getResetScaleAction());
 873         manager.add(fTimeGraphCombo.getTimeGraphViewer().getPreviousEventAction());
 874         manager.add(fTimeGraphCombo.getTimeGraphViewer().getNextEventAction());
 875         manager.add(fPreviousResourceAction);
 876         manager.add(fNextResourceAction);
 877         manager.add(fTimeGraphCombo.getTimeGraphViewer().getZoomInAction());
 878         manager.add(fTimeGraphCombo.getTimeGraphViewer().getZoomOutAction());
 879         manager.add(new Separator());
 880     }
 881 }