lttng/org.eclipse.tracecompass.lttng2.kernel.core/src/org/eclipse/tracecompass/internal/lttng2/kernel/core/analysis/graph/handlers/TraceEventHandlerStatedump.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015 École Polytechnique de Montréal
   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
  10 package org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.handlers;
  11
  12 import static org.eclipse.tracecompass.common.core.NonNullUtils.nullToEmptyString;
  13
  14 import org.eclipse.tracecompass.analysis.os.linux.core.model.HostThread;
  15 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout;
  16 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider;
  17 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider.ProcessStatus;
  18 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.EventField;
  19 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.LttngSystemModel;
  20 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.model.LttngWorker;
  21 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
  22
  23 /**
  24  * Handles the LTTng statedump events necessary for the initialization of the
  25  * system model
  26  *
  27  * @author Francis Giraldeau
  28  */
  29 public class TraceEventHandlerStatedump extends BaseHandler {
  30
  31     /**
  32      * Constructor
  33      *
  34      * @param provider
  35      *            The parent graph provider
  36      */
  37     public TraceEventHandlerStatedump(LttngKernelExecGraphProvider provider) {
  38         super(provider);
  39     }
  40
  41     @Override
  42     public void handleEvent(ITmfEvent event) {
  43         IKernelAnalysisEventLayout eventLayout = getProvider().getEventLayout(event.getTrace());
  44         LttngSystemModel system = getProvider().getSystem();
  45         String eventName = event.getName();
  46         if (!eventName.equals(eventLayout.eventStatedumpProcessState())) {
  47             return;
  48         }
  49
  50         Integer tid = EventField.getInt(event, eventLayout.fieldTid());
  51         String name = EventField.getOrDefault(event, eventLayout.fieldName(), nullToEmptyString(Messages.TraceEventHandlerSched_UnknownThreadName));
  52         Integer status = EventField.getInt(event, eventLayout.fieldStatus());
  53
  54         String host = event.getTrace().getHostId();
  55         long ts = event.getTimestamp().getValue();
  56
  57         HostThread ht = new HostThread(host, tid);
  58         LttngWorker task = system.findWorker(ht);
  59         if (task == null) {
  60             task = new LttngWorker(ht, name, ts);
  61             system.addWorker(task);
  62         } else {
  63             task.setName(name);
  64         }
  65
  66         task.setStatus(ProcessStatus.getStatus(status));
  67     }
  68
  69 }