analysis/org.eclipse.tracecompass.analysis.os.linux.core/src/org/eclipse/tracecompass/internal/analysis/os/linux/core/kernel/handlers/SoftIrqRaiseHandler.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.jdt.annotation.Nullable;
  16 import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.StateValues;
  17 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout;
  18 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder;
  19 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  20 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  21 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
  22
  23 /**
  24  * Raise a soft irq event
  25  */
  26 public class SoftIrqRaiseHandler extends KernelEventHandler {
  27
  28     /**
  29      * Constructor
  30      *
  31      * @param layout
  32      *            event layout
  33      */
  34     public SoftIrqRaiseHandler(IKernelAnalysisEventLayout layout) {
  35         super(layout);
  36     }
  37
  38     @Override
  39     public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException {
  40         Integer softIrqId = ((Long) event.getContent().getField(getLayout().fieldVec()).getValue()).intValue();
  41         Integer cpu = KernelEventHandlerUtils.getCpu(event);
  42         if (cpu == null) {
  43             return;
  44         }
  45         /*
  46          * Mark this SoftIRQ as *raised* in the resource tree.
  47          */
  48         int quark = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeSoftIRQs(cpu, ss), softIrqId.toString());
  49
  50         ITmfStateValue value = (isInSoftirq(ss.queryOngoingState(quark)) ?
  51                 StateValues.SOFT_IRQ_RAISED_RUNNING_VALUE :
  52                 StateValues.SOFT_IRQ_RAISED_VALUE);
  53         ss.modifyAttribute(KernelEventHandlerUtils.getTimestamp(event), value, quark);
  54
  55     }
  56
  57     private static boolean isInSoftirq(@Nullable ITmfStateValue state) {
  58         return (state != null &&
  59                 !state.isNull() &&
  60                 (state.unboxInt() & StateValues.CPU_STATUS_SOFTIRQ) == StateValues.CPU_STATUS_SOFTIRQ);
  61     }
  62 }