org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/controlflow/evProcessor/FlowFinishUpdateHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are made
   5  * 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: Alvaro Sanchez-Leon - Initial implementation
  10  *******************************************************************************/
  11 package org.eclipse.linuxtools.lttng.ui.views.controlflow.evProcessor;
  12
  13 import java.util.Vector;
  14
  15 import org.eclipse.linuxtools.lttng.event.LttngEvent;
  16 import org.eclipse.linuxtools.lttng.state.StateStrings.Events;
  17 import org.eclipse.linuxtools.lttng.state.evProcessor.ILttngEventProcessor;
  18 import org.eclipse.linuxtools.lttng.state.model.LttngProcessState;
  19 import org.eclipse.linuxtools.lttng.state.model.LttngTraceState;
  20 import org.eclipse.linuxtools.lttng.ui.TraceDebug;
  21 import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeComponent;
  22 import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeEvent;
  23 import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeEventProcess;
  24
  25 /**
  26  * Creates specific finish state data request
  27  *
  28  * @author alvaro
  29  *
  30  */
  31 public class FlowFinishUpdateHandler extends AbsFlowTRangeUpdate
  32                 implements ILttngEventProcessor {
  33
  34         public Events getEventHandleType() {
  35                 // No specific event
  36                 return null;
  37         }
  38
  39         @Override
  40         public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
  41                 // The end of the last state is unknown since it's beyond the requested time range window. Create this last
  42                 // event to half page after the visible window but not beyond the end of trace
  43                 long endOfTrace = traceSt.getContext().getTraceTimeWindow().getEndTime().getValue();
  44                 long halfWindow = (params.getEndTime() - params.getStartTime()) / 2;
  45
  46                 // End of event common to all processes within the trace for this specific request
  47                 long endOfEvent = params.getEndTime() + halfWindow;
  48                 if (endOfEvent > endOfTrace) {
  49                         endOfEvent = endOfTrace;
  50                 }
  51
  52                 TraceDebug.debug("Number of localProcesses: "
  53                                 + procContainer.readItems().length);
  54                 // to identify the process relevant to the traceState
  55                 String traceId = traceSt.getTraceId();
  56                 int numLocalFound = 0;
  57                 int numLocalNotFound = 0;
  58                 int numWithNoChildren = 0;
  59                 for (TimeRangeEventProcess localProcess : procContainer.readItems()) {
  60                         LttngProcessState stateProcess = lttv_state_find_process(traceSt,
  61                                         localProcess.getCpu(), localProcess.getPid());
  62
  63                         // Drawing the last state for processes related to the current trace
  64                         // id.
  65                         if (!localProcess.getTraceID().equals(traceId)) {
  66                                 continue;
  67                         }
  68
  69                         // Check if the process is in the state provider, it is the case
  70                         // when the requested time frame did not include any events for a
  71                         // process
  72                         if (stateProcess == null) {
  73                                 // Get Start time from the end time of previous event
  74                                 Vector<TimeRangeComponent> childrenEvents = localProcess
  75                                                 .getTraceEvents();
  76                                 long nextGoodTime;
  77                                 String stateMode;
  78                                 if (childrenEvents.size() > 0) {
  79                                         TimeRangeComponent prevEvent = childrenEvents
  80                                                         .get(childrenEvents.size() - 1);
  81                                         if (prevEvent instanceof TimeRangeEvent) {
  82                                                 TimeRangeEvent prevTimeRange = (TimeRangeEvent) prevEvent;
  83                                                 // calculate the next good time to draw the event
  84                                                 // nextGoodTime = prevTimeRange.getStopTime() + 1;
  85                                                 nextGoodTime = localProcess.getNext_good_time();
  86                                                 stateMode = prevTimeRange.getStateMode();
  87
  88                                                 // Draw with the Local information since the current
  89                                                 // request did
  90                                                 // not contain events related to this process
  91                                                 makeDraw(traceSt, nextGoodTime, endOfEvent, localProcess, params, stateMode);
  92                                         } else {
  93                                                 TraceDebug.debug("previous event not instance of TimeRangeEvent?: "
  94                                                                 + prevEvent.getClass().getSimpleName());
  95                                         }
  96                                 } else {
  97                                         numWithNoChildren++;
  98                                 }
  99
 100                                 numLocalNotFound++;
 101                                 continue;
 102                         }
 103
 104                         numLocalFound++;
 105                         // Draw the last state for this process
 106                         makeDraw(traceSt, endOfEvent, stateProcess, localProcess, params);
 107                 }
 108
 109                 TraceDebug.debug("Print Last Event: NumLocalFound " + numLocalFound
 110                                 + "; NumLocalNotFound: " + numLocalNotFound
 111                                 + "; NumWithNoChildren: " + numWithNoChildren);
 112
 113                 return false;
 114         }
 115
 116 }