lttng/org.eclipse.tracecompass.lttng2.kernel.core/src/org/eclipse/tracecompass/internal/lttng2/kernel/core/analysis/graph/model/LttngWorker.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.model;
  11
  12 import org.eclipse.jdt.annotation.Nullable;
  13 import org.eclipse.tracecompass.analysis.graph.core.base.IGraphWorker;
  14 import org.eclipse.tracecompass.analysis.os.linux.core.model.HostThread;
  15 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider.ProcessStatus;
  16
  17 /**
  18  * This class represents the worker unit from the execution graph
  19  *
  20  * TODO: See if this class could be integrated inside HostThread instead.
  21  *
  22  * @author Geneviève Bastien
  23  */
  24 public class LttngWorker implements IGraphWorker {
  25
  26     private final HostThread fHostTid;
  27     private final long fStart;
  28
  29     private String fThreadName;
  30     private ProcessStatus fStatus = ProcessStatus.UNKNOWN;
  31     private ProcessStatus fOldStatus = ProcessStatus.UNKNOWN;
  32
  33     /**
  34      * Constructor
  35      *
  36      * @param ht
  37      *            The host thread represented by this worker
  38      * @param name
  39      *            The name of this thread
  40      * @param ts
  41      *            The timestamp
  42      */
  43     public LttngWorker(HostThread ht, String name, long ts) {
  44         fHostTid = ht;
  45         fThreadName = name;
  46         fStart = ts;
  47     }
  48
  49     @Override
  50     public String getHostId() {
  51         return fHostTid.getHost();
  52     }
  53
  54     /**
  55      * Set the name of this worker
  56      *
  57      * @param name The name of this worker
  58      */
  59     public void setName(String name) {
  60         fThreadName = name;
  61     }
  62
  63     /**
  64      * Get the name of this worker
  65      *
  66      * @return The name of the worker
  67      */
  68     public String getName() {
  69         return fThreadName;
  70     }
  71
  72     /**
  73      * Set the status, saving the old value that can still be accessed using {@link LttngWorker#getOldStatus()}
  74      *
  75      * @param status The new status of this
  76      */
  77     public void setStatus(ProcessStatus status) {
  78         fOldStatus = fStatus;
  79         fStatus = status;
  80     }
  81
  82     /**
  83      * Get the status of this thread
  84      *
  85      * @return The thread status
  86      */
  87     public ProcessStatus getStatus() {
  88         return fStatus;
  89     }
  90
  91     /**
  92      * Return the previous status this worker was in
  93      *
  94      * @return The previous status of this worker
  95      */
  96     public ProcessStatus getOldStatus() {
  97         return fOldStatus;
  98     }
  99
 100     /**
 101      * Get the host thread associated with this worker
 102      *
 103      * @return The {@link HostThread} associated with this worker
 104      */
 105     public HostThread getHostThread() {
 106         return fHostTid;
 107     }
 108
 109     /**
 110      * Get the start time of this worker
 111      *
 112      * @return The start time in nanoseconds
 113      */
 114     public long getStart() {
 115         return fStart;
 116     }
 117
 118     @Override
 119     public boolean equals(@Nullable Object obj) {
 120         if (obj instanceof LttngWorker) {
 121             return getHostThread().equals(((LttngWorker) obj).getHostThread());
 122         }
 123         return false;
 124     }
 125
 126     @Override
 127     public int hashCode() {
 128         return fHostTid.hashCode();
 129     }
 130
 131     @Override
 132     public String toString() {
 133         return '[' + fThreadName + ',' + fHostTid.getTid() + ']';
 134     }
 135
 136 }