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

   1 /*******************************************************************************
   2  * Copyright (c) 2016 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
  10 package org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.handlers;
  11
  12 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout;
  13 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder;
  14 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  15 import org.eclipse.tracecompass.statesystem.core.statevalue.TmfStateValue;
  16 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
  17
  18 /**
  19  * IPI Exit Handler
  20  *
  21  * @author Matthew Khouzam
  22  */
  23 public class IPIExitHandler extends KernelEventHandler {
  24
  25     /**
  26      * Constructor
  27      *
  28      * @param layout
  29      *            event layout
  30      */
  31     public IPIExitHandler(IKernelAnalysisEventLayout layout) {
  32         super(layout);
  33     }
  34
  35     @Override
  36     public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException {
  37         Integer cpu = KernelEventHandlerUtils.getCpu(event);
  38         if (cpu == null) {
  39             return;
  40         }
  41         int currentThreadNode = KernelEventHandlerUtils.getCurrentThreadNode(cpu, ss);
  42         Integer irqId = ((Long) event.getContent().getField(getLayout().fieldIPIVector()).getValue()).intValue();
  43         /* Put this IRQ back to inactive in the resource tree */
  44         int quark = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeIRQs(cpu, ss), irqId.toString());
  45         TmfStateValue value = TmfStateValue.nullValue();
  46         long timestamp = KernelEventHandlerUtils.getTimestamp(event);
  47         ss.modifyAttribute(timestamp, value, quark);
  48
  49         /* Set the previous process back to running */
  50         KernelEventHandlerUtils.setProcessToRunning(timestamp, currentThreadNode, ss);
  51
  52         /* Set the CPU status back to running or "idle" */
  53         KernelEventHandlerUtils.cpuExitInterrupt(timestamp, cpu, ss);
  54     }
  55 }