Examples of org.eclipse.core.runtime.PerformanceStats

org.eclipse.core.runtime.PerformanceStats
PerformanceStats collects and aggregates timing data about events such as a builder running, an editor opening, etc. This data is collected for the purpose of performance analysis, and is not intended to be used as a generic event tracking and notification system.
Each performance event can have an associated maximum acceptable duration that is specified in the platform debug options file (.options). Events that take longer than this maximum are logged as errors. Along with option file entries for each debug event, there are some global debug options for enabling or disabling performance event gathering and reporting. See the "org.eclipse.core.runtime/perf*" debug options in the .options file for the org.eclipse.core.runtime plugin for more details.
A performance event can optionally have additional context information ( {@link #getContext}). This information is only stored in the case of a performance failure, and can be used to provide further diagnostic information that can help track down the cause of the failure.
Performance events and performance failures are batched up and periodically sent to interested performance event listeners.
This class is not intended to be subclassed or instantiated by clients.
@since 3.1

}
protected void codeComplete(org.aspectj.org.eclipse.jdt.internal.compiler.env.ICompilationUnit cu, org.aspectj.org.eclipse.jdt.internal.compiler.env.ICompilationUnit unitToSkip, int position, CompletionRequestor requestor, WorkingCopyOwner owner) throws JavaModelException {
  if (requestor == null) {
    throw new IllegalArgumentException("Completion requestor cannot be null"); //$NON-NLS-1$
  }
  PerformanceStats performanceStats = CompletionEngine.PERF
    ? PerformanceStats.getStats(JavaModelManager.COMPLETION_PERF, this)
    : null;
  if(performanceStats != null) {
    performanceStats.startRun(new String(cu.getFileName()) + " at " + position); //$NON-NLS-1$
  }
  IBuffer buffer = getBuffer();
  if (buffer == null) {
    return;
  }
  if (position < -1 || position > buffer.getLength()) {
    throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INDEX_OUT_OF_BOUNDS));
  }
  JavaProject project = (JavaProject) getJavaProject();
  SearchableEnvironment environment = project.newSearchableNameEnvironment(owner);


  // set unit to skip
  environment.unitToSkip = unitToSkip;


  // code complete
  CompletionEngine engine = new CompletionEngine(environment, requestor, project.getOptions(true), project);
  engine.complete(cu, position, 0);
  if(performanceStats != null) {
    performanceStats.endRun();
  }
  if (NameLookup.VERBOSE) {
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInSourcePackage: " + environment.nameLookup.timeSpentInSeekTypesInSourcePackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInBinaryPackage: " + environment.nameLookup.timeSpentInSeekTypesInBinaryPackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
  }

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    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInSourcePackage: " + environment.nameLookup.timeSpentInSeekTypesInSourcePackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInBinaryPackage: " + environment.nameLookup.timeSpentInSeekTypesInBinaryPackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
  }
}
protected IJavaElement[] codeSelect(org.aspectj.org.eclipse.jdt.internal.compiler.env.ICompilationUnit cu, int offset, int length, WorkingCopyOwner owner) throws JavaModelException {
  PerformanceStats performanceStats = SelectionEngine.PERF
    ? PerformanceStats.getStats(JavaModelManager.SELECTION_PERF, this)
    : null;
  if(performanceStats != null) {
    performanceStats.startRun(new String(cu.getFileName()) + " at [" + offset + "," + length + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
  }
  
  JavaProject project = (JavaProject)getJavaProject();
  SearchableEnvironment environment = project.newSearchableNameEnvironment(owner);
  
  SelectionRequestor requestor= new SelectionRequestor(environment.nameLookup, this);
  IBuffer buffer = getBuffer();
  if (buffer == null) {
    return requestor.getElements();
  }
  int end= buffer.getLength();
  if (offset < 0 || length < 0 || offset + length > end ) {
    throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INDEX_OUT_OF_BOUNDS));
  }


  // fix for 1FVXGDK
  SelectionEngine engine = new SelectionEngine(environment, requestor, project.getOptions(true));
  engine.select(cu, offset, offset + length - 1);
  
  if(performanceStats != null) {
    performanceStats.endRun();
  }
  if (NameLookup.VERBOSE) {
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInSourcePackage: " + environment.nameLookup.timeSpentInSeekTypesInSourcePackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInBinaryPackage: " + environment.nameLookup.timeSpentInSeekTypesInBinaryPackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
  }

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      try {
        // plugin must be active to get computer
        ICompletionProposalComputer computer = getComputer(true);
        if (computer != null) {
          try {
            PerformanceStats stats= startMeter(context, computer);
            //ask the computer for the proposals
            List proposals = computer.computeCompletionProposals(context, monitor);
            stopMeter(stats, COMPUTE_COMPLETION_PROPOSALS);
    
            if (proposals != null) {

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      IStatus status = null;
      try {
        // plugin must be active to get computer
        ICompletionProposalComputer computer = getComputer(true);
        if (computer != null) {
          PerformanceStats stats= startMeter(context, computer);
          List proposals= computer.computeContextInformation(context, monitor);
          stopMeter(stats, COMPUTE_CONTEXT_INFORMATION);
    
          if (proposals != null) {
            fLastError= computer.getErrorMessage();

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      IStatus status = null;
      try {
        // plugin must be active to get computer
        ICompletionProposalComputer computer = getComputer(true);
        if (computer != null) {
          PerformanceStats stats = startMeter(SESSION_STARTED, computer);
          computer.sessionStarted();
          stopMeter(stats, SESSION_ENDED);
        }
      } catch (InvalidRegistryObjectException x) {
        status= createExceptionStatus(x);

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      IStatus status = null;
      try {
        // plugin must be active to get computer
        ICompletionProposalComputer computer = getComputer(true);
        if (computer != null) {
          PerformanceStats stats= startMeter(SESSION_ENDED, computer);
          computer.sessionEnded();
          stopMeter(stats, SESSION_ENDED);
        }
      } catch (InvalidRegistryObjectException x) {
        status= createExceptionStatus(x);

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   * @param context
   * @param computer
   * @return
   */
  private PerformanceStats startMeter(Object context, ICompletionProposalComputer computer) {
    final PerformanceStats stats;
    if (MEASURE_PERFORMANCE) {
      stats= PerformanceStats.getStats(PERFORMANCE_EVENT, computer);
      stats.startRun(context.toString());
    } else {
      stats= null;
    }


    if (fIsReportingDelay) {

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    ITypeRoot typeRoot,
    IProgressMonitor monitor) throws JavaModelException {
  if (requestor == null) {
    throw new IllegalArgumentException("Completion requestor cannot be null"); //$NON-NLS-1$
  }
  PerformanceStats performanceStats = CompletionEngine.PERF
    ? PerformanceStats.getStats(JavaModelManager.COMPLETION_PERF, this)
    : null;
  if(performanceStats != null) {
    performanceStats.startRun(new String(cu.getFileName()) + " at " + position); //$NON-NLS-1$
  }
  IBuffer buffer = getBuffer();
  if (buffer == null) {
    return;
  }
  if (position < -1 || position > buffer.getLength()) {
    throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INDEX_OUT_OF_BOUNDS));
  }
  JavaProject project = (JavaProject) getJavaProject();
  SearchableEnvironment environment = project.newSearchableNameEnvironment(owner);


  // set unit to skip
  environment.unitToSkip = unitToSkip;


  // code complete
  CompletionEngine engine = new CompletionEngine(environment, requestor, project.getOptions(true), project, owner, monitor);
  engine.complete(cu, position, 0, typeRoot);
  if(performanceStats != null) {
    performanceStats.endRun();
  }
  if (NameLookup.VERBOSE) {
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInSourcePackage: " + environment.nameLookup.timeSpentInSeekTypesInSourcePackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInBinaryPackage: " + environment.nameLookup.timeSpentInSeekTypesInBinaryPackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
  }

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    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInSourcePackage: " + environment.nameLookup.timeSpentInSeekTypesInSourcePackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInBinaryPackage: " + environment.nameLookup.timeSpentInSeekTypesInBinaryPackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
  }
}
protected IJavaElement[] codeSelect(org.eclipse.jdt.internal.compiler.env.ICompilationUnit cu, int offset, int length, WorkingCopyOwner owner) throws JavaModelException {
  PerformanceStats performanceStats = SelectionEngine.PERF
    ? PerformanceStats.getStats(JavaModelManager.SELECTION_PERF, this)
    : null;
  if(performanceStats != null) {
    performanceStats.startRun(new String(cu.getFileName()) + " at [" + offset + "," + length + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
  }


  JavaProject project = (JavaProject)getJavaProject();
  SearchableEnvironment environment = project.newSearchableNameEnvironment(owner);


  SelectionRequestor requestor= new SelectionRequestor(environment.nameLookup, this);
  IBuffer buffer = getBuffer();
  if (buffer == null) {
    return requestor.getElements();
  }
  int end= buffer.getLength();
  if (offset < 0 || length < 0 || offset + length > end ) {
    throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INDEX_OUT_OF_BOUNDS));
  }


  // fix for 1FVXGDK
  SelectionEngine engine = new SelectionEngine(environment, requestor, project.getOptions(true), owner);
  engine.select(cu, offset, offset + length - 1);


  if(performanceStats != null) {
    performanceStats.endRun();
  }
  if (NameLookup.VERBOSE) {
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInSourcePackage: " + environment.nameLookup.timeSpentInSeekTypesInSourcePackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
    System.out.println(Thread.currentThread() + " TIME SPENT in NameLoopkup#seekTypesInBinaryPackage: " + environment.nameLookup.timeSpentInSeekTypesInBinaryPackage + "ms");  //$NON-NLS-1$ //$NON-NLS-2$
  }

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     * doStandbyStateChanged instead.
     * 
     * @param standby
     */
    public void standbyStateChanged(boolean standby, boolean isStandbyPartNeeded) {
        PerformanceStats setStandbyStateStats = null;
        long start = 0;
        if (Log.logPerformance) {
            if (logUIcreationTime && PerformanceStats.ENABLED) {
                PerformanceStats stats = PerformanceStats.getStats(
                    IIntroConstants.PERF_UI_ZOOM, IIntroConstants.INTRO);
                stats.endRun();
                Util
                    .logPerformanceMessage(
                        "(perf stats) time spent in UI code before content is displayed (standbyStateChanged event is fired) ", //$NON-NLS-1$
                        stats.getRunningTime());
                stats.reset();
            }


            // standby time.
            setStandbyStateStats = PerformanceStats.getStats(
                IIntroConstants.PERF_SET_STANDBY_STATE, IIntroConstants.INTRO);
            setStandbyStateStats.startRun();
            start = System.currentTimeMillis();
        }




        doStandbyStateChanged(standby, isStandbyPartNeeded);


        // now log performance
        if (Log.logPerformance) {
            if (PerformanceStats.ENABLED) {
                setStandbyStateStats.endRun();
                Util
                    .logPerformanceMessage(
                        "(perf stats) setting standby state (zooming, displaying content) took:", //$NON-NLS-1$
                        +setStandbyStateStats.getRunningTime());
                setStandbyStateStats.reset();
            } else
                Util
                    .logPerformanceTime(
                        "setting standby state (zooming, generating content, setText() ) took:", //$NON-NLS-1$
                        +start);


            if (logUIcreationTime) {
                if (PerformanceStats.ENABLED) {
                    PerformanceStats stats = PerformanceStats.getStats(
                        IIntroConstants.PERF_VIEW_CREATION_TIME,
                        IIntroConstants.INTRO);
                    stats.endRun();
                    Util
                        .logPerformanceMessage(
                            "END - (perf stats): creating CustomizableIntroPart view took:", //$NON-NLS-1$
                            +stats.getRunningTime());
                    stats.reset();
                } else
                    Util.logPerformanceTime(
                        "END: creating CustomizableIntroPart view took:", //$NON-NLS-1$
                        +IntroPlugin.getDefault().gettUICreationStartTime());

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