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  *   Bernd Hufmann - Updated signal handling
  12  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.internal.lttng2.kernel.ui.views.controlflow;
  15
  16 import java.util.ArrayList;
  17 import java.util.Arrays;
  18 import java.util.Collections;
  19 import java.util.Comparator;
  20 import java.util.HashMap;
  21 import java.util.List;
  22
  23 import org.eclipse.core.runtime.IProgressMonitor;
  24 import org.eclipse.core.runtime.NullProgressMonitor;
  25 import org.eclipse.jface.action.Action;
  26 import org.eclipse.jface.action.IToolBarManager;
  27 import org.eclipse.jface.action.Separator;
  28 import org.eclipse.jface.viewers.ILabelProviderListener;
  29 import org.eclipse.jface.viewers.ITableLabelProvider;
  30 import org.eclipse.jface.viewers.ITreeContentProvider;
  31 import org.eclipse.jface.viewers.Viewer;
  32 import org.eclipse.linuxtools.internal.lttng2.kernel.core.Attributes;
  33 import org.eclipse.linuxtools.internal.lttng2.kernel.ui.Messages;
  34 import org.eclipse.linuxtools.lttng2.kernel.core.trace.LttngKernelTrace;
  35 import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfTimestamp;
  36 import org.eclipse.linuxtools.tmf.core.exceptions.AttributeNotFoundException;
  37 import org.eclipse.linuxtools.tmf.core.exceptions.StateSystemDisposedException;
  38 import org.eclipse.linuxtools.tmf.core.exceptions.StateValueTypeException;
  39 import org.eclipse.linuxtools.tmf.core.exceptions.TimeRangeException;
  40 import org.eclipse.linuxtools.tmf.core.interval.ITmfStateInterval;
  41 import org.eclipse.linuxtools.tmf.core.signal.TmfRangeSynchSignal;
  42 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalHandler;
  43 import org.eclipse.linuxtools.tmf.core.signal.TmfTimeSynchSignal;
  44 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceClosedSignal;
  45 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceOpenedSignal;
  46 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceSelectedSignal;
  47 import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateSystem;
  48 import org.eclipse.linuxtools.tmf.core.statevalue.ITmfStateValue;
  49 import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp;
  50 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimeRange;
  51 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp;
  52 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  53 import org.eclipse.linuxtools.tmf.core.trace.TmfTraceManager;
  54 import org.eclipse.linuxtools.tmf.ui.views.TmfView;
  55 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphRangeListener;
  56 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphSelectionListener;
  57 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphTimeListener;
  58 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphCombo;
  59 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphRangeUpdateEvent;
  60 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphSelectionEvent;
  61 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.TimeGraphTimeEvent;
  62 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeEvent;
  63 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
  64 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.model.TimeEvent;
  65 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils;
  66 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils.Resolution;
  67 import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets.Utils.TimeFormat;
  68 import org.eclipse.swt.SWT;
  69 import org.eclipse.swt.graphics.Image;
  70 import org.eclipse.swt.widgets.Composite;
  71 import org.eclipse.swt.widgets.Display;
  72 import org.eclipse.swt.widgets.TreeColumn;
  73 import org.eclipse.ui.IActionBars;
  74
  75 /**
  76  * The Control Flow view main object
  77  *
  78  */
  79 public class ControlFlowView extends TmfView {
  80
  81     // ------------------------------------------------------------------------
  82     // Constants
  83     // ------------------------------------------------------------------------
  84
  85     /**
  86      * View ID.
  87      */
  88     public static final String ID = "org.eclipse.linuxtools.lttng2.kernel.ui.views.controlflow"; //$NON-NLS-1$
  89
  90     private static final String PROCESS_COLUMN    = Messages.ControlFlowView_processColumn;
  91     private static final String TID_COLUMN        = Messages.ControlFlowView_tidColumn;
  92     private static final String PTID_COLUMN       = Messages.ControlFlowView_ptidColumn;
  93     private static final String BIRTH_TIME_COLUMN = Messages.ControlFlowView_birthTimeColumn;
  94     private static final String TRACE_COLUMN      = Messages.ControlFlowView_traceColumn;
  95
  96     private final String[] COLUMN_NAMES = new String[] {
  97             PROCESS_COLUMN,
  98             TID_COLUMN,
  99             PTID_COLUMN,
 100             BIRTH_TIME_COLUMN,
 101             TRACE_COLUMN
 102     };
 103
 104     private final String[] FILTER_COLUMN_NAMES = new String[] {
 105             PROCESS_COLUMN,
 106             TID_COLUMN
 107     };
 108
 109     /**
 110      * Redraw state enum
 111      */
 112     private enum State { IDLE, BUSY, PENDING }
 113
 114     // ------------------------------------------------------------------------
 115     // Fields
 116     // ------------------------------------------------------------------------
 117
 118     // The timegraph combo
 119     private TimeGraphCombo fTimeGraphCombo;
 120
 121     // The selected trace
 122     private ITmfTrace fTrace;
 123
 124     // The timegraph entry list
 125     private ArrayList<ControlFlowEntry> fEntryList;
 126
 127     // The trace to entry list hash map
 128     final private HashMap<ITmfTrace, ArrayList<ControlFlowEntry>> fEntryListMap = new HashMap<ITmfTrace, ArrayList<ControlFlowEntry>>();
 129
 130     // The trace to build thread hash map
 131     final private HashMap<ITmfTrace, BuildThread> fBuildThreadMap = new HashMap<ITmfTrace, BuildThread>();
 132
 133     // The start time
 134     private long fStartTime;
 135
 136     // The end time
 137     private long fEndTime;
 138
 139     // The display width
 140     private final int fDisplayWidth;
 141
 142     // The zoom thread
 143     private ZoomThread fZoomThread;
 144
 145     // The next resource action
 146     private Action fNextResourceAction;
 147
 148     // The previous resource action
 149     private Action fPreviousResourceAction;
 150
 151     // A comparator class
 152     private final ControlFlowEntryComparator fControlFlowEntryComparator = new ControlFlowEntryComparator();
 153
 154     // The redraw state used to prevent unnecessary queuing of display runnables
 155     private State fRedrawState = State.IDLE;
 156
 157     // The redraw synchronization object
 158     final private Object fSyncObj = new Object();
 159
 160     // ------------------------------------------------------------------------
 161     // Classes
 162     // ------------------------------------------------------------------------
 163
 164     private class TreeContentProvider implements ITreeContentProvider {
 165
 166         @Override
 167         public void dispose() {
 168         }
 169
 170         @Override
 171         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 172         }
 173
 174         @Override
 175         public Object[] getElements(Object inputElement) {
 176             return (ITimeGraphEntry[]) inputElement;
 177         }
 178
 179         @Override
 180         public Object[] getChildren(Object parentElement) {
 181             ITimeGraphEntry entry = (ITimeGraphEntry) parentElement;
 182             List<? extends ITimeGraphEntry> children = entry.getChildren();
 183             return children.toArray(new ITimeGraphEntry[children.size()]);
 184         }
 185
 186         @Override
 187         public Object getParent(Object element) {
 188             ITimeGraphEntry entry = (ITimeGraphEntry) element;
 189             return entry.getParent();
 190         }
 191
 192         @Override
 193         public boolean hasChildren(Object element) {
 194             ITimeGraphEntry entry = (ITimeGraphEntry) element;
 195             return entry.hasChildren();
 196         }
 197
 198     }
 199
 200     private class TreeLabelProvider implements ITableLabelProvider {
 201
 202         @Override
 203         public void addListener(ILabelProviderListener listener) {
 204         }
 205
 206         @Override
 207         public void dispose() {
 208         }
 209
 210         @Override
 211         public boolean isLabelProperty(Object element, String property) {
 212             return false;
 213         }
 214
 215         @Override
 216         public void removeListener(ILabelProviderListener listener) {
 217         }
 218
 219         @Override
 220         public Image getColumnImage(Object element, int columnIndex) {
 221             return null;
 222         }
 223
 224         @Override
 225         public String getColumnText(Object element, int columnIndex) {
 226             ControlFlowEntry entry = (ControlFlowEntry) element;
 227             if (columnIndex == 0) {
 228                 return entry.getName();
 229             } else if (columnIndex == 1) {
 230                 return Integer.toString(entry.getThreadId());
 231             } else if (columnIndex == 2) {
 232                 if (entry.getParentThreadId() > 0) {
 233                     return Integer.toString(entry.getParentThreadId());
 234                 }
 235             } else if (columnIndex == 3) {
 236                 return Utils.formatTime(entry.getStartTime(), TimeFormat.CALENDAR, Resolution.NANOSEC);
 237             } else if (columnIndex == 4) {
 238                 return entry.getTrace().getName();
 239             }
 240             return ""; //$NON-NLS-1$
 241         }
 242
 243     }
 244
 245     private static class ControlFlowEntryComparator implements Comparator<ITimeGraphEntry> {
 246
 247         @Override
 248         public int compare(ITimeGraphEntry o1, ITimeGraphEntry o2) {
 249             int result = 0;
 250
 251             if ((o1 instanceof ControlFlowEntry) && (o2 instanceof ControlFlowEntry)) {
 252                 ControlFlowEntry entry1 = (ControlFlowEntry) o1;
 253                 ControlFlowEntry entry2 = (ControlFlowEntry) o2;
 254                 result = entry1.getTrace().getStartTime().compareTo(entry2.getTrace().getStartTime());
 255                 if (result == 0) {
 256                     result = entry1.getTrace().getName().compareTo(entry2.getTrace().getName());
 257                 }
 258                 if (result == 0) {
 259                     result = entry1.getThreadId() < entry2.getThreadId() ? -1 : entry1.getThreadId() > entry2.getThreadId() ? 1 : 0;
 260                 }
 261             }
 262
 263             if (result == 0) {
 264                 result = o1.getStartTime() < o2.getStartTime() ? -1 : o1.getStartTime() > o2.getStartTime() ? 1 : 0;
 265             }
 266
 267             return result;
 268         }
 269     }
 270
 271     private class BuildThread extends Thread {
 272         private final ITmfTrace fBuildTrace;
 273         private final IProgressMonitor fMonitor;
 274
 275         public BuildThread(ITmfTrace trace) {
 276             super("ControlFlowView build"); //$NON-NLS-1$
 277             fBuildTrace = trace;
 278             fMonitor = new NullProgressMonitor();
 279         }
 280
 281         @Override
 282         public void run() {
 283             buildEventList(fBuildTrace, fMonitor);
 284             synchronized (fBuildThreadMap) {
 285                 fBuildThreadMap.remove(this);
 286             }
 287         }
 288
 289         public void cancel() {
 290             fMonitor.setCanceled(true);
 291         }
 292     }
 293
 294     private class ZoomThread extends Thread {
 295         private final ArrayList<ControlFlowEntry> fZoomEntryList;
 296         private final long fZoomStartTime;
 297         private final long fZoomEndTime;
 298         private final long fResolution;
 299         private final IProgressMonitor fMonitor;
 300
 301         public ZoomThread(ArrayList<ControlFlowEntry> entryList, long startTime, long endTime) {
 302             super("ControlFlowView zoom"); //$NON-NLS-1$
 303             fZoomEntryList = entryList;
 304             fZoomStartTime = startTime;
 305             fZoomEndTime = endTime;
 306             fResolution = Math.max(1, (fZoomEndTime - fZoomStartTime) / fDisplayWidth);
 307             fMonitor = new NullProgressMonitor();
 308         }
 309
 310         @Override
 311         public void run() {
 312             if (fZoomEntryList == null) {
 313                 return;
 314             }
 315             for (ControlFlowEntry entry : fZoomEntryList) {
 316                 if (fMonitor.isCanceled()) {
 317                     break;
 318                 }
 319                 zoom(entry, fMonitor);
 320             }
 321         }
 322
 323         private void zoom(ControlFlowEntry entry, IProgressMonitor monitor) {
 324             if (fZoomStartTime <= fStartTime && fZoomEndTime >= fEndTime) {
 325                 entry.setZoomedEventList(null);
 326             } else {
 327                 List<ITimeEvent> zoomedEventList = getEventList(entry, fZoomStartTime, fZoomEndTime, fResolution, monitor);
 328                 if (zoomedEventList != null) {
 329                     entry.setZoomedEventList(zoomedEventList);
 330                 }
 331             }
 332             redraw();
 333             for (ControlFlowEntry child : entry.getChildren()) {
 334                 if (fMonitor.isCanceled()) {
 335                     return;
 336                 }
 337                 zoom(child, monitor);
 338             }
 339         }
 340
 341         public void cancel() {
 342             fMonitor.setCanceled(true);
 343         }
 344     }
 345
 346     // ------------------------------------------------------------------------
 347     // Constructors
 348     // ------------------------------------------------------------------------
 349
 350     /**
 351      * Constructor
 352      */
 353     public ControlFlowView() {
 354         super(ID);
 355         fDisplayWidth = Display.getDefault().getBounds().width;
 356     }
 357
 358     // ------------------------------------------------------------------------
 359     // ViewPart
 360     // ------------------------------------------------------------------------
 361
 362     @Override
 363     public void createPartControl(Composite parent) {
 364         fTimeGraphCombo = new TimeGraphCombo(parent, SWT.NONE);
 365
 366         fTimeGraphCombo.setTreeContentProvider(new TreeContentProvider());
 367
 368         fTimeGraphCombo.setTreeLabelProvider(new TreeLabelProvider());
 369
 370         fTimeGraphCombo.setTimeGraphProvider(new ControlFlowPresentationProvider());
 371
 372         fTimeGraphCombo.setTreeColumns(COLUMN_NAMES);
 373
 374         fTimeGraphCombo.setFilterContentProvider(new TreeContentProvider());
 375
 376         fTimeGraphCombo.setFilterLabelProvider(new TreeLabelProvider());
 377
 378         fTimeGraphCombo.setFilterColumns(FILTER_COLUMN_NAMES);
 379
 380         fTimeGraphCombo.getTimeGraphViewer().addRangeListener(new ITimeGraphRangeListener() {
 381             @Override
 382             public void timeRangeUpdated(TimeGraphRangeUpdateEvent event) {
 383                 final long startTime = event.getStartTime();
 384                 final long endTime = event.getEndTime();
 385                 TmfTimeRange range = new TmfTimeRange(new CtfTmfTimestamp(startTime), new CtfTmfTimestamp(endTime));
 386                 TmfTimestamp time = new CtfTmfTimestamp(fTimeGraphCombo.getTimeGraphViewer().getSelectedTime());
 387                 broadcast(new TmfRangeSynchSignal(ControlFlowView.this, range, time));
 388                 if (fZoomThread != null) {
 389                     fZoomThread.cancel();
 390                 }
 391                 startZoomThread(startTime, endTime);
 392             }
 393         });
 394
 395         fTimeGraphCombo.getTimeGraphViewer().addTimeListener(new ITimeGraphTimeListener() {
 396             @Override
 397             public void timeSelected(TimeGraphTimeEvent event) {
 398                 long time = event.getTime();
 399                 broadcast(new TmfTimeSynchSignal(ControlFlowView.this, new CtfTmfTimestamp(time)));
 400             }
 401         });
 402
 403         fTimeGraphCombo.addSelectionListener(new ITimeGraphSelectionListener() {
 404             @Override
 405             public void selectionChanged(TimeGraphSelectionEvent event) {
 406                 //ITimeGraphEntry selection = event.getSelection();
 407             }
 408         });
 409
 410         fTimeGraphCombo.getTimeGraphViewer().setTimeFormat(TimeFormat.CALENDAR);
 411
 412         // View Action Handling
 413         makeActions();
 414         contributeToActionBars();
 415
 416         ITmfTrace trace = getActiveTrace();
 417         if (trace != null) {
 418             traceSelected(new TmfTraceSelectedSignal(this, trace));
 419         }
 420
 421         // make selection available to other views
 422         getSite().setSelectionProvider(fTimeGraphCombo.getTreeViewer());
 423     }
 424
 425     @Override
 426     public void setFocus() {
 427         fTimeGraphCombo.setFocus();
 428     }
 429
 430     // ------------------------------------------------------------------------
 431     // Signal handlers
 432     // ------------------------------------------------------------------------
 433     /**
 434      * Handler for the trace opened signal.
 435      * @param signal
 436      *            The incoming signal
 437      * @since 2.0
 438      */
 439     @TmfSignalHandler
 440     public void traceOpened(TmfTraceOpenedSignal signal) {
 441         fTrace = signal.getTrace();
 442         loadTrace();
 443     }
 444
 445     /**
 446      * Handler for the trace selected signal
 447      *
 448      * @param signal
 449      *            The incoming signal
 450      */
 451     @TmfSignalHandler
 452     public void traceSelected(final TmfTraceSelectedSignal signal) {
 453         if (signal.getTrace() == fTrace) {
 454             return;
 455         }
 456         fTrace = signal.getTrace();
 457         loadTrace();
 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 : TmfTraceManager.getTraceSet(fTrace)) {
 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 loadTrace() {
 596         synchronized (fEntryListMap) {
 597             fEntryList = fEntryListMap.get(fTrace);
 598             if (fEntryList == null) {
 599                 synchronized (fBuildThreadMap) {
 600                     BuildThread buildThread = new BuildThread(fTrace);
 601                     fBuildThreadMap.put(fTrace, buildThread);
 602                     buildThread.start();
 603                 }
 604             } else {
 605                 fStartTime = fTrace.getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 606                 fEndTime = fTrace.getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 607                 refresh();
 608             }
 609         }
 610     }
 611
 612     private void buildEventList(final ITmfTrace trace, IProgressMonitor monitor) {
 613         fStartTime = Long.MAX_VALUE;
 614         fEndTime = Long.MIN_VALUE;
 615         ArrayList<ControlFlowEntry> rootList = new ArrayList<ControlFlowEntry>();
 616         for (ITmfTrace aTrace : TmfTraceManager.getTraceSet(trace)) {
 617             if (monitor.isCanceled()) {
 618                 return;
 619             }
 620             if (aTrace instanceof LttngKernelTrace) {
 621                 ArrayList<ControlFlowEntry> entryList = new ArrayList<ControlFlowEntry>();
 622                 LttngKernelTrace ctfKernelTrace = (LttngKernelTrace) aTrace;
 623                 ITmfStateSystem ssq = ctfKernelTrace.getStateSystems().get(LttngKernelTrace.STATE_ID);
 624                 if (!ssq.waitUntilBuilt()) {
 625                     return;
 626                 }
 627                 long start = ssq.getStartTime();
 628                 long end = ssq.getCurrentEndTime() + 1;
 629                 fStartTime = Math.min(fStartTime, start);
 630                 fEndTime = Math.max(fEndTime, end);
 631                 List<Integer> threadQuarks = ssq.getQuarks(Attributes.THREADS, "*"); //$NON-NLS-1$
 632                 for (int threadQuark : threadQuarks) {
 633                     if (monitor.isCanceled()) {
 634                         return;
 635                     }
 636                     String threadName = ssq.getAttributeName(threadQuark);
 637                     int threadId = -1;
 638                     try {
 639                         threadId = Integer.parseInt(threadName);
 640                     } catch (NumberFormatException e1) {
 641                         continue;
 642                     }
 643                     if (threadId == 0) { // ignore the swapper thread
 644                         continue;
 645                     }
 646                     int execNameQuark = -1;
 647                     try {
 648                         try {
 649                             execNameQuark = ssq.getQuarkRelative(threadQuark, Attributes.EXEC_NAME);
 650                         } catch (AttributeNotFoundException e) {
 651                             continue;
 652                         }
 653                         int ppidQuark = ssq.getQuarkRelative(threadQuark, Attributes.PPID);
 654                         List<ITmfStateInterval> execNameIntervals = ssq.queryHistoryRange(execNameQuark, start, end - 1); // use monitor when available in api
 655                         if (monitor.isCanceled()) {
 656                             return;
 657                         }
 658                         ControlFlowEntry entry = null;
 659                         for (ITmfStateInterval execNameInterval : execNameIntervals) {
 660                             if (monitor.isCanceled()) {
 661                                 return;
 662                             }
 663                             if (!execNameInterval.getStateValue().isNull() &&
 664                                     execNameInterval.getStateValue().getType() == ITmfStateValue.Type.STRING) {
 665                                 String execName = execNameInterval.getStateValue().unboxStr();
 666                                 long startTime = execNameInterval.getStartTime();
 667                                 long endTime = execNameInterval.getEndTime() + 1;
 668                                 int ppid = -1;
 669                                 if (ppidQuark != -1) {
 670                                     ITmfStateInterval ppidInterval = ssq.querySingleState(startTime, ppidQuark);
 671                                     ppid = ppidInterval.getStateValue().unboxInt();
 672                                 }
 673                                 if (entry == null) {
 674                                     entry = new ControlFlowEntry(threadQuark, ctfKernelTrace, execName, threadId, ppid, startTime, endTime);
 675                                     entryList.add(entry);
 676                                 } else {
 677                                     // update the name of the entry to the latest execName
 678                                     entry.setName(execName);
 679                                 }
 680                                 entry.addEvent(new TimeEvent(entry, startTime, endTime - startTime));
 681                             } else {
 682                                 entry = null;
 683                             }
 684                         }
 685                     } catch (AttributeNotFoundException e) {
 686                         e.printStackTrace();
 687                     } catch (TimeRangeException e) {
 688                         e.printStackTrace();
 689                     } catch (StateValueTypeException e) {
 690                         e.printStackTrace();
 691                     } catch (StateSystemDisposedException e) {
 692                         /* Ignored */
 693                     }
 694                 }
 695                 buildTree(entryList, rootList);
 696             }
 697             Collections.sort(rootList, fControlFlowEntryComparator);
 698             synchronized (fEntryListMap) {
 699                 fEntryListMap.put(trace, (ArrayList<ControlFlowEntry>) rootList.clone());
 700             }
 701             if (trace == fTrace) {
 702                 refresh();
 703             }
 704         }
 705         for (ControlFlowEntry entry : rootList) {
 706             if (monitor.isCanceled()) {
 707                 return;
 708             }
 709             buildStatusEvents(trace, entry, monitor);
 710         }
 711     }
 712
 713     private static void buildTree(ArrayList<ControlFlowEntry> entryList,
 714             ArrayList<ControlFlowEntry> rootList) {
 715         for (ControlFlowEntry entry : entryList) {
 716             boolean root = true;
 717             if (entry.getParentThreadId() > 0) {
 718                 for (ControlFlowEntry parent : entryList) {
 719                     if (parent.getThreadId() == entry.getParentThreadId() &&
 720                             entry.getStartTime() >= parent.getStartTime() &&
 721                             entry.getStartTime() <= parent.getEndTime()) {
 722                         parent.addChild(entry);
 723                         root = false;
 724                         break;
 725                     }
 726                 }
 727             }
 728             if (root) {
 729                 rootList.add(entry);
 730             }
 731         }
 732     }
 733
 734     private void buildStatusEvents(ITmfTrace trace, ControlFlowEntry entry, IProgressMonitor monitor) {
 735         ITmfStateSystem ssq = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
 736         long start = ssq.getStartTime();
 737         long end = ssq.getCurrentEndTime() + 1;
 738         long resolution = Math.max(1, (end - start) / fDisplayWidth);
 739         List<ITimeEvent> eventList = getEventList(entry, entry.getStartTime(), entry.getEndTime(), resolution, monitor);
 740         if (monitor.isCanceled()) {
 741             return;
 742         }
 743         entry.setEventList(eventList);
 744         if (trace == fTrace) {
 745             redraw();
 746         }
 747         for (ITimeGraphEntry child : entry.getChildren()) {
 748             if (monitor.isCanceled()) {
 749                 return;
 750             }
 751             buildStatusEvents(trace, (ControlFlowEntry) child, monitor);
 752         }
 753     }
 754
 755     private static List<ITimeEvent> getEventList(ControlFlowEntry entry,
 756             long startTime, long endTime, long resolution,
 757             IProgressMonitor monitor) {
 758         final long realStart = Math.max(startTime, entry.getStartTime());
 759         final long realEnd = Math.min(endTime, entry.getEndTime());
 760         if (realEnd <= realStart) {
 761             return null;
 762         }
 763         ITmfStateSystem ssq = entry.getTrace().getStateSystems().get(LttngKernelTrace.STATE_ID);
 764         List<ITimeEvent> eventList = null;
 765         try {
 766             int statusQuark = ssq.getQuarkRelative(entry.getThreadQuark(), Attributes.STATUS);
 767             List<ITmfStateInterval> statusIntervals = ssq.queryHistoryRange(statusQuark, realStart, realEnd - 1, resolution, monitor);
 768             eventList = new ArrayList<ITimeEvent>(statusIntervals.size());
 769             long lastEndTime = -1;
 770             for (ITmfStateInterval statusInterval : statusIntervals) {
 771                 if (monitor.isCanceled()) {
 772                     return null;
 773                 }
 774                 long time = statusInterval.getStartTime();
 775                 long duration = statusInterval.getEndTime() - time + 1;
 776                 int status = -1;
 777                 try {
 778                     status = statusInterval.getStateValue().unboxInt();
 779                 } catch (StateValueTypeException e) {
 780                     e.printStackTrace();
 781                 }
 782                 if (lastEndTime != time && lastEndTime != -1) {
 783                     eventList.add(new TimeEvent(entry, lastEndTime, time - lastEndTime));
 784                 }
 785                 eventList.add(new ControlFlowEvent(entry, time, duration, status));
 786                 lastEndTime = time + duration;
 787             }
 788         } catch (AttributeNotFoundException e) {
 789             e.printStackTrace();
 790         } catch (TimeRangeException e) {
 791             e.printStackTrace();
 792         } catch (StateSystemDisposedException e) {
 793             /* Ignored */
 794         }
 795         return eventList;
 796     }
 797
 798     private void refresh() {
 799         Display.getDefault().asyncExec(new Runnable() {
 800             @Override
 801             public void run() {
 802                 if (fTimeGraphCombo.isDisposed()) {
 803                     return;
 804                 }
 805                 ITimeGraphEntry[] entries = null;
 806                 synchronized (fEntryListMap) {
 807                     fEntryList = fEntryListMap.get(fTrace);
 808                     if (fEntryList == null) {
 809                         fEntryList = new ArrayList<ControlFlowEntry>();
 810                     }
 811                     entries = fEntryList.toArray(new ITimeGraphEntry[0]);
 812                 }
 813                 Arrays.sort(entries, fControlFlowEntryComparator);
 814                 fTimeGraphCombo.setInput(entries);
 815                 fTimeGraphCombo.getTimeGraphViewer().setTimeBounds(fStartTime, fEndTime);
 816
 817                 long timestamp = fTrace == null ? 0 : fTraceManager.getCurrentTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 818                 long startTime = fTrace == null ? 0 : fTraceManager.getCurrentRange().getStartTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 819                 long endTime = fTrace == null ? 0 : fTraceManager.getCurrentRange().getEndTime().normalize(0, ITmfTimestamp.NANOSECOND_SCALE).getValue();
 820                 startTime = Math.max(startTime, fStartTime);
 821                 endTime = Math.min(endTime, fEndTime);
 822                 fTimeGraphCombo.getTimeGraphViewer().setSelectedTime(timestamp, false);
 823                 fTimeGraphCombo.getTimeGraphViewer().setStartFinishTime(startTime, endTime);
 824
 825                 for (TreeColumn column : fTimeGraphCombo.getTreeViewer().getTree().getColumns()) {
 826                     column.pack();
 827                 }
 828
 829                 startZoomThread(startTime, endTime);
 830             }
 831         });
 832     }
 833
 834     private void redraw() {
 835         synchronized (fSyncObj) {
 836             if (fRedrawState == State.IDLE) {
 837                 fRedrawState = State.BUSY;
 838             } else {
 839                 fRedrawState = State.PENDING;
 840                 return;
 841             }
 842         }
 843         Display.getDefault().asyncExec(new Runnable() {
 844             @Override
 845             public void run() {
 846                 if (fTimeGraphCombo.isDisposed()) {
 847                     return;
 848                 }
 849                 fTimeGraphCombo.redraw();
 850                 fTimeGraphCombo.update();
 851                 synchronized (fSyncObj) {
 852                     if (fRedrawState == State.PENDING) {
 853                         fRedrawState = State.IDLE;
 854                         redraw();
 855                     } else {
 856                         fRedrawState = State.IDLE;
 857                     }
 858                 }
 859             }
 860         });
 861     }
 862
 863     private void startZoomThread(long startTime, long endTime) {
 864         if (fZoomThread != null) {
 865             fZoomThread.cancel();
 866         }
 867         fZoomThread = new ZoomThread(fEntryList, startTime, endTime);
 868         fZoomThread.start();
 869     }
 870
 871     private void makeActions() {
 872         fPreviousResourceAction = fTimeGraphCombo.getTimeGraphViewer().getPreviousItemAction();
 873         fPreviousResourceAction.setText(Messages.ControlFlowView_previousProcessActionNameText);
 874         fPreviousResourceAction.setToolTipText(Messages.ControlFlowView_previousProcessActionToolTipText);
 875         fNextResourceAction = fTimeGraphCombo.getTimeGraphViewer().getNextItemAction();
 876         fNextResourceAction.setText(Messages.ControlFlowView_nextProcessActionNameText);
 877         fNextResourceAction.setToolTipText(Messages.ControlFlowView_nextProcessActionToolTipText);
 878     }
 879
 880     private void contributeToActionBars() {
 881         IActionBars bars = getViewSite().getActionBars();
 882         fillLocalToolBar(bars.getToolBarManager());
 883     }
 884
 885     private void fillLocalToolBar(IToolBarManager manager) {
 886         manager.add(fTimeGraphCombo.getShowFilterAction());
 887         manager.add(fTimeGraphCombo.getTimeGraphViewer().getShowLegendAction());
 888         manager.add(new Separator());
 889         manager.add(fTimeGraphCombo.getTimeGraphViewer().getResetScaleAction());
 890         manager.add(fTimeGraphCombo.getTimeGraphViewer().getPreviousEventAction());
 891         manager.add(fTimeGraphCombo.getTimeGraphViewer().getNextEventAction());
 892         manager.add(fPreviousResourceAction);
 893         manager.add(fNextResourceAction);
 894         manager.add(fTimeGraphCombo.getTimeGraphViewer().getZoomInAction());
 895         manager.add(fTimeGraphCombo.getTimeGraphViewer().getZoomOutAction());
 896         manager.add(new Separator());
 897     }
 898 }