SysEntryHandler.java

/*******************************************************************************
 * Copyright (c) 2016 École Polytechnique de Montréal
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/

package org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.handlers;

import org.eclipse.tracecompass.analysis.os.linux.core.event.aspect.LinuxTidAspect;
import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout;
import org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.InputOutputStateProvider;
import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.handlers.KernelEventHandler;
import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder;
import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
import org.eclipse.tracecompass.statesystem.core.statevalue.TmfStateValue;
import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils;

/**
 * System call entry handler
 *
 * @author Houssem Daoud
 */
public class SysEntryHandler extends KernelEventHandler {

    /**
     * Constructor
     *
     * @param layout
     *            event layout
     */
    public SysEntryHandler(IKernelAnalysisEventLayout layout) {
        super(layout);
    }

    @Override
    public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException {
        long ts = event.getTimestamp().getValue();
        String eventName = event.getName();

        Integer tid = TmfTraceUtils.resolveIntEventAspectOfClassForEvent(event.getTrace(), LinuxTidAspect.class, event);
        if (tid == null) {
            return;
        }
        int threadSyscallQuark = ss.getQuarkRelativeAndAdd(InputOutputStateProvider.getNodeSyscalls(ss), String.valueOf(tid));
        TmfStateValue value = TmfStateValue.newValueString(eventName);
        ss.modifyAttribute(ts, value, threadSyscallQuark);
    }
}