| /******************************************************************************* |
| * 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 2.0 which |
| * accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.incubator.internal.virtual.machine.analysis.core.fused.handlers; |
| |
| import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
| import org.eclipse.tracecompass.incubator.internal.virtual.machine.analysis.core.fused.FusedAttributes; |
| import org.eclipse.tracecompass.incubator.internal.virtual.machine.analysis.core.model.VirtualMachine; |
| import org.eclipse.tracecompass.incubator.internal.virtual.machine.analysis.core.virtual.resources.StateValues; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.aspect.TmfCpuAspect; |
| import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; |
| |
| /** |
| * @author Cédric Biancheri |
| */ |
| public class SchedWakeupHandler extends VMKernelEventHandler { |
| |
| /** |
| * Constructor |
| * |
| * @param layout |
| * the layout |
| * @param sp |
| * the state provider |
| */ |
| public SchedWakeupHandler(IKernelAnalysisEventLayout layout, FusedVirtualMachineStateProvider sp) { |
| super(layout, sp); |
| } |
| |
| @Override |
| public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) { |
| Integer cpu = TmfTraceUtils.resolveIntEventAspectOfClassForEvent(event.getTrace(), TmfCpuAspect.class, event); |
| if (cpu == null) { |
| return; |
| } |
| FusedVirtualMachineStateProvider sp = getStateProvider(); |
| VirtualMachine host = sp.getCurrentMachine(event); |
| if (host != null && host.isGuest()) { |
| Integer physicalCPU = sp.getPhysicalCPU(host, cpu); |
| if (physicalCPU != null) { |
| cpu = physicalCPU; |
| } else { |
| return; |
| } |
| } |
| String machineHost = event.getTrace().getHostId(); |
| final int tid = ((Long) event.getContent().getField(getLayout().fieldTid()).getValue()).intValue(); |
| final int prio = ((Long) event.getContent().getField(getLayout().fieldPrio()).getValue()).intValue(); |
| |
| String threadAttributeName = FusedVMEventHandlerUtils.buildThreadAttributeName(tid, cpu); |
| if (threadAttributeName == null) { |
| return; |
| } |
| |
| final int threadNode = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getNodeThreads(ss), machineHost, threadAttributeName); |
| |
| /* |
| * The process indicated in the event's payload is now ready to run. |
| * Assign it to the "wait for cpu" state, but only if it was not already |
| * running. |
| */ |
| int quark = ss.getQuarkRelativeAndAdd(threadNode, FusedAttributes.STATUS); |
| Object value = ss.queryOngoing(quark); |
| if (!(value instanceof Integer)) { |
| return; |
| } |
| int status = (int) value; |
| long timestamp = FusedVMEventHandlerUtils.getTimestamp(event); |
| if (status != StateValues.PROCESS_STATUS_RUN_SYSCALL && |
| status != StateValues.PROCESS_STATUS_RUN_USERMODE) { |
| ss.modifyAttribute(timestamp, StateValues.PROCESS_STATUS_WAIT_FOR_CPU, quark); |
| } |
| |
| /* |
| * When a user changes a threads prio (e.g. with pthread_setschedparam), |
| * it shows in ftrace with a sched_wakeup. |
| */ |
| quark = ss.getQuarkRelativeAndAdd(threadNode, FusedAttributes.PRIO); |
| ss.modifyAttribute(timestamp, prio, quark); |
| } |
| } |