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 java.util.Collections;
  13 import java.util.HashMap;
  14 import java.util.Map;
  15 import java.util.Optional;
  16
  17 import org.eclipse.jdt.annotation.NonNull;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.eclipse.tracecompass.analysis.graph.core.base.IGraphWorker;
  20 import org.eclipse.tracecompass.analysis.os.linux.core.kernel.KernelAnalysisModule;
  21 import org.eclipse.tracecompass.analysis.os.linux.core.model.HostThread;
  22 import org.eclipse.tracecompass.common.core.NonNullUtils;
  23 import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.Attributes;
  24 import org.eclipse.tracecompass.internal.lttng2.kernel.core.Activator;
  25 import org.eclipse.tracecompass.internal.lttng2.kernel.core.analysis.graph.building.LttngKernelExecGraphProvider.ProcessStatus;
  26 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
  27 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  28 import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException;
  29 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  30 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  31 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceManager;
  32 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils;
  33
  34 /**
  35  * This class represents the worker unit from the execution graph
  36  *
  37  * TODO: See if this class could be integrated inside HostThread instead.
  38  *
  39  * @author Geneviève Bastien
  40  */
  41 public class LttngWorker implements IGraphWorker {
  42
  43     private final HostThread fHostTid;
  44     private final long fStart;
  45
  46     private String fThreadName;
  47     private ProcessStatus fStatus = ProcessStatus.UNKNOWN;
  48     private ProcessStatus fOldStatus = ProcessStatus.UNKNOWN;
  49
  50     /**
  51      * Constructor
  52      *
  53      * @param ht
  54      *            The host thread represented by this worker
  55      * @param name
  56      *            The name of this thread
  57      * @param ts
  58      *            The timestamp
  59      */
  60     public LttngWorker(HostThread ht, String name, long ts) {
  61         fHostTid = ht;
  62         fThreadName = name;
  63         fStart = ts;
  64     }
  65
  66     @Override
  67     public String getHostId() {
  68         return fHostTid.getHost();
  69     }
  70
  71     @SuppressWarnings("null")
  72     @Override
  73     public @NonNull Map<@NonNull String, @NonNull String> getWorkerInformation(long t) {
  74
  75         try {
  76             int tid = fHostTid.getTid();
  77             if (tid == -1) {
  78                 return Collections.EMPTY_MAP;
  79             }
  80             Optional<@Nullable KernelAnalysisModule> kam = TmfTraceManager.getInstance().getActiveTraceSet().stream()
  81                         .filter(trace -> trace.getHostId().equals(getHostId()))
  82                         .map(trace -> TmfTraceUtils.getAnalysisModuleOfClass(trace, KernelAnalysisModule.class, KernelAnalysisModule.ID))
  83                         .filter(mod -> mod != null)
  84                         .findFirst();
  85             if (!kam.isPresent()) {
  86                 return Collections.EMPTY_MAP;
  87             }
  88             ITmfStateSystem ss = kam.get().getStateSystem();
  89             if (ss == null) {
  90                 return Collections.EMPTY_MAP;
  91             }
  92             int quark;
  93             Map<String, String> info = new HashMap<>();
  94             quark = ss.getQuarkAbsolute(Attributes.THREADS, Integer.toString(tid), Attributes.PRIO);
  95             ITmfStateInterval interval = ss.querySingleState(t, quark);
  96             ITmfStateValue stateValue = interval.getStateValue();
  97             if (stateValue.getType().equals(ITmfStateValue.Type.INTEGER)) {
  98                 info.put(NonNullUtils.nullToEmptyString(Messages.LttngWorker_threadPriority), Integer.toString(stateValue.unboxInt()));
  99             }
 100             return info;
 101         } catch (AttributeNotFoundException | StateSystemDisposedException e) {
 102             Activator.getDefault().logError(e.getMessage(), e);
 103         }
 104         return Collections.EMPTY_MAP;
 105     }
 106
 107     /**
 108      * Set the name of this worker
 109      *
 110      * @param name
 111      *            The name of this worker
 112      */
 113     public void setName(String name) {
 114         fThreadName = name;
 115     }
 116
 117     /**
 118      * Get the name of this worker
 119      *
 120      * @return The name of the worker
 121      */
 122     public String getName() {
 123         return fThreadName;
 124     }
 125
 126     /**
 127      * Set the status, saving the old value that can still be accessed using
 128      * {@link LttngWorker#getOldStatus()}
 129      *
 130      * @param status
 131      *            The new status of this
 132      */
 133     public void setStatus(ProcessStatus status) {
 134         fOldStatus = fStatus;
 135         fStatus = status;
 136     }
 137
 138     /**
 139      * Get the status of this thread
 140      *
 141      * @return The thread status
 142      */
 143     public ProcessStatus getStatus() {
 144         return fStatus;
 145     }
 146
 147     /**
 148      * Return the previous status this worker was in
 149      *
 150      * @return The previous status of this worker
 151      */
 152     public ProcessStatus getOldStatus() {
 153         return fOldStatus;
 154     }
 155
 156     /**
 157      * Get the host thread associated with this worker
 158      *
 159      * @return The {@link HostThread} associated with this worker
 160      */
 161     public HostThread getHostThread() {
 162         return fHostTid;
 163     }
 164
 165     /**
 166      * Get the start time of this worker
 167      *
 168      * @return The start time in nanoseconds
 169      */
 170     public long getStart() {
 171         return fStart;
 172     }
 173
 174     @Override
 175     public boolean equals(@Nullable Object obj) {
 176         if (obj instanceof LttngWorker) {
 177             return getHostThread().equals(((LttngWorker) obj).getHostThread());
 178         }
 179         return false;
 180     }
 181
 182     @Override
 183     public int hashCode() {
 184         return fHostTid.hashCode();
 185     }
 186
 187     @Override
 188     public String toString() {
 189         return '[' + fThreadName + ',' + fHostTid.getTid() + ']';
 190     }
 191
 192 }