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:
  10  *   Alvaro Sanchez-Leon - Initial implementation
  11  *       Michel Dagenais (michel.dagenais@polymtl.ca) - Reference C implementation, used with permission
  12  *******************************************************************************/
  13 package org.eclipse.linuxtools.lttng.ui.views.controlflow.evProcessor;
  14
  15 import java.util.Vector;
  16
  17 import org.eclipse.linuxtools.lttng.event.LttngEvent;
  18 import org.eclipse.linuxtools.lttng.state.StateStrings.Events;
  19 import org.eclipse.linuxtools.lttng.state.evProcessor.ILttngEventProcessor;
  20 import org.eclipse.linuxtools.lttng.state.model.LttngProcessState;
  21 import org.eclipse.linuxtools.lttng.state.model.LttngTraceState;
  22 import org.eclipse.linuxtools.lttng.ui.TraceDebug;
  23 import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeComponent;
  24 import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeEvent;
  25 import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeEventProcess;
  26
  27 /**
  28  * Creates specific finish state data request
  29  *
  30  * @author alvaro
  31  *
  32  */
  33 public class FlowFinishUpdateHandler extends AbsFlowTRangeUpdate
  34                 implements ILttngEventProcessor {
  35
  36         public Events getEventHandleType() {
  37                 // No specific event
  38                 return null;
  39         }
  40
  41         @Override
  42         public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
  43                 // The end of the last state is unknown since it's beyond the requested time range window. Create this last
  44                 // event to half page after the visible window but not beyond the end of trace
  45                 long endOfTrace = traceSt.getContext().getTraceTimeWindow().getEndTime().getValue();
  46                 long halfWindow = (params.getEndTime() - params.getStartTime()) / 2;
  47
  48                 // End of event common to all processes within the trace for this specific request
  49                 long endOfEvent = params.getEndTime() + halfWindow;
  50                 if (endOfEvent > endOfTrace) {
  51                         endOfEvent = endOfTrace;
  52                 }
  53
  54                 TraceDebug.debug("Number of localProcesses: " + procContainer.readItems().length); //$NON-NLS-1$
  55                 // to identify the process relevant to the traceState
  56                 String traceId = traceSt.getTraceId();
  57                 int numLocalFound = 0;
  58                 int numLocalNotFound = 0;
  59                 int numWithNoChildren = 0;
  60                 for (TimeRangeEventProcess localProcess : procContainer.readItems()) {
  61                         LttngProcessState stateProcess = lttv_state_find_process(traceSt,
  62                                         localProcess.getCpu(), localProcess.getPid());
  63
  64                         // Drawing the last state for processes related to the current trace
  65                         // id.
  66                         if (!localProcess.getTraceID().equals(traceId)) {
  67                                 continue;
  68                         }
  69
  70                         // Check if the process is in the state provider, it is the case
  71                         // when the requested time frame did not include any events for a
  72                         // process
  73                         if (stateProcess == null) {
  74                                 // Get Start time from the end time of previous event
  75                                 Vector<TimeRangeComponent> childrenEvents = localProcess
  76                                                 .getTraceEvents();
  77                                 long nextGoodTime;
  78                                 String stateMode;
  79                                 if (childrenEvents.size() > 0) {
  80                                         TimeRangeComponent prevEvent = childrenEvents
  81                                                         .get(childrenEvents.size() - 1);
  82                                         if (prevEvent instanceof TimeRangeEvent) {
  83                                                 TimeRangeEvent prevTimeRange = (TimeRangeEvent) prevEvent;
  84                                                 // calculate the next good time to draw the event
  85                                                 // nextGoodTime = prevTimeRange.getStopTime() + 1;
  86                                                 nextGoodTime = localProcess.getNext_good_time();
  87                                                 stateMode = prevTimeRange.getStateMode();
  88
  89                                                 // Draw with the Local information since the current
  90                                                 // request did
  91                                                 // not contain events related to this process
  92                                                 makeDraw(traceSt, nextGoodTime, endOfEvent, localProcess, params, stateMode);
  93                                         } else {
  94                                                 TraceDebug.debug("previous event not instance of TimeRangeEvent?: " //$NON-NLS-1$
  95                                                                 + prevEvent.getClass().getSimpleName());
  96                                         }
  97                                 } else {
  98                                         numWithNoChildren++;
  99                                 }
 100
 101                                 numLocalNotFound++;
 102                                 continue;
 103                         }
 104
 105                         numLocalFound++;
 106                         // Draw the last state for this process
 107                         makeDraw(traceSt, endOfEvent, stateProcess, localProcess, params);
 108                 }
 109
 110                 TraceDebug.debug("Print Last Event: NumLocalFound " + numLocalFound      //$NON-NLS-1$
 111                                 + "; NumLocalNotFound: " + numLocalNotFound //$NON-NLS-1$
 112                                 + "; NumWithNoChildren: " + numWithNoChildren); //$NON-NLS-1$
 113
 114                 return false;
 115         }
 116
 117 }