| /******************************************************************************* |
| * 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.VirtualCPU; |
| import org.eclipse.tracecompass.incubator.internal.virtual.machine.analysis.core.model.VirtualMachine; |
| 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 IrqExitHandler extends VMKernelEventHandler { |
| |
| /** |
| * Constructor |
| * |
| * @param layout |
| * the layout |
| * @param sp |
| * the state provider |
| */ |
| public IrqExitHandler(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); |
| VirtualCPU cpuObject = VirtualCPU.getVirtualCPU(host, cpu.longValue()); |
| if (host != null && host.isGuest()) { |
| Integer physicalCPU = sp.getPhysicalCPU(host, cpu); |
| if (physicalCPU != null) { |
| cpu = physicalCPU; |
| } else { |
| return; |
| } |
| } |
| int currentThreadNode = FusedVMEventHandlerUtils.getCurrentThreadNode(cpu, ss); |
| Integer irqId = ((Long) event.getContent().getField(getLayout().fieldIrq()).getValue()).intValue(); |
| /* Put this IRQ back to inactive in the resource tree */ |
| int quark = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getNodeIRQs(cpu, ss), irqId.toString()); |
| long timestamp = FusedVMEventHandlerUtils.getTimestamp(event); |
| ss.modifyAttribute(timestamp, (Object) null, quark); |
| |
| /* Set the previous process back to running */ |
| FusedVMEventHandlerUtils.setProcessToRunning(timestamp, currentThreadNode, ss); |
| |
| /* Set the CPU status back to running or "idle" */ |
| FusedVMEventHandlerUtils.cpuExitInterrupt(timestamp, cpu, ss); |
| quark = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getCurrentCPUNode(cpu, ss), FusedAttributes.STATUS); |
| Integer value = cpuObject.getStateBeforeIRQ(); |
| ss.modifyAttribute(timestamp, value, quark); |
| } |
| |
| } |