analysis/org.eclipse.tracecompass.analysis.os.linux.core/src/org/eclipse/tracecompass/internal/analysis/os/linux/core/kernel/handlers/PiSetprioHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *    Matthew Khouzam - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.handlers;
  14
  15 import org.eclipse.tracecompass.analysis.os.linux.core.kernel.Attributes;
  16 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout;
  17 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder;
  18 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  19 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  20 import org.eclipse.tracecompass.statesystem.core.statevalue.TmfStateValue;
  21 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
  22 import org.eclipse.tracecompass.tmf.core.event.ITmfEventField;
  23
  24 /**
  25  * Set Prio handler
  26  */
  27 public class PiSetprioHandler extends KernelEventHandler {
  28
  29     /**
  30      * Constructor
  31      * @param layout event layout
  32      */
  33     public PiSetprioHandler(IKernelAnalysisEventLayout layout) {
  34         super(layout);
  35     }
  36
  37     @Override
  38     public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException {
  39         ITmfEventField content = event.getContent();
  40         Integer cpu = KernelEventHandlerUtils.getCpu(event);
  41         Integer tid = ((Long) content.getField(getLayout().fieldTid()).getValue()).intValue();
  42         Integer prio = ((Long) content.getField(getLayout().fieldNewPrio()).getValue()).intValue();
  43
  44         String threadAttributeName = KernelEventHandlerUtils.buildThreadAttributeName(tid, cpu);
  45         if (threadAttributeName == null) {
  46             return;
  47         }
  48
  49         Integer updateThreadNode = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeThreads(ss), threadAttributeName);
  50
  51         /* Set the current prio for the new process */
  52         int quark = ss.getQuarkRelativeAndAdd(updateThreadNode, Attributes.PRIO);
  53         ITmfStateValue value = TmfStateValue.newValueInt(prio);
  54         ss.modifyAttribute(KernelEventHandlerUtils.getTimestamp(event), value, quark);
  55     }
  56 }