| /******************************************************************************* |
| * Copyright (c) 2015 Ericsson |
| * |
| * 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 |
| * |
| * Contributors: |
| * Matthew Khouzam - Initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.handlers; |
| |
| import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull; |
| |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.tracecompass.analysis.os.linux.core.kernel.LinuxValues; |
| import org.eclipse.tracecompass.analysis.os.linux.core.model.ProcessStatus; |
| import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.Attributes; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; |
| import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException; |
| import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; |
| |
| /** |
| * LTTng Specific state dump event handler |
| */ |
| public class StateDumpHandler extends KernelEventHandler { |
| |
| /** |
| * Constructor |
| * |
| * @param layout |
| * event layout |
| */ |
| public StateDumpHandler(IKernelAnalysisEventLayout layout) { |
| super(layout); |
| } |
| |
| @Override |
| public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { |
| ITmfEventField content = event.getContent(); |
| Integer eventCpu = KernelEventHandlerUtils.getCpu(event); |
| int tid = ((Long) content.getField("tid").getValue()).intValue(); //$NON-NLS-1$ |
| int pid = ((Long) content.getField("pid").getValue()).intValue(); //$NON-NLS-1$ |
| int ppid = ((Long) content.getField("ppid").getValue()).intValue(); //$NON-NLS-1$ |
| long status = ((Long) content.getField("status").getValue()).longValue(); //$NON-NLS-1$ |
| String name = checkNotNull((String) content.getField("name").getValue()); //$NON-NLS-1$ |
| /* Only present in LTTng 2.10+ */ |
| @Nullable Long cpuField = content.getFieldValue(Long.class, "cpu"); //$NON-NLS-1$ |
| /* |
| * "mode" could be interesting too, but it doesn't seem to be populated |
| * with anything relevant for now. |
| */ |
| |
| String threadAttributeName = Attributes.buildThreadAttributeName(tid, eventCpu); |
| if (threadAttributeName == null) { |
| return; |
| } |
| |
| int curThreadNode = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeThreads(ss), threadAttributeName); |
| long timestamp = KernelEventHandlerUtils.getTimestamp(event); |
| /* Set the process' name */ |
| setProcessName(ss, name, curThreadNode, timestamp); |
| |
| /* Set the process' PPID */ |
| setPpid(ss, ppid, curThreadNode, timestamp); |
| |
| /* Set the process' PID */ |
| setPid(ss, tid, pid, curThreadNode, timestamp); |
| |
| /* Set the process' status */ |
| setStatus(ss, status, curThreadNode, cpuField, timestamp); |
| } |
| |
| private static void setPid(ITmfStateSystemBuilder ss, int tid, int pid, int curThreadNode, long timestamp) { |
| if (tid == pid) { |
| /* It's a process, no need to set a PID */ |
| return; |
| } |
| int quark = ss.getQuarkRelativeAndAdd(curThreadNode, Attributes.PID); |
| if (ss.queryOngoingState(quark).isNull()) { |
| ss.modifyAttribute(timestamp, pid, quark); |
| } |
| } |
| |
| private static void setStatus(ITmfStateSystemBuilder ss, long status, int curThreadNode, @Nullable Long cpu, long timestamp) { |
| ITmfStateValue value; |
| if (ss.queryOngoingState(curThreadNode).isNull()) { |
| value = ProcessStatus.getStatusFromStatedump(status).getStateValue(); |
| ss.modifyAttribute(timestamp, value.unboxValue(), curThreadNode); |
| if (status == LinuxValues.STATEDUMP_PROCESS_STATUS_WAIT_CPU) { |
| setRunQueue(ss, curThreadNode, cpu, timestamp); |
| } |
| } |
| } |
| |
| private static void setRunQueue(ITmfStateSystemBuilder ss, int curThreadNode, @Nullable Long cpu, long timestamp) { |
| if (cpu != null) { |
| int quark = ss.getQuarkRelativeAndAdd(curThreadNode, Attributes.CURRENT_CPU_RQ); |
| ss.modifyAttribute(timestamp, cpu.intValue(), quark); |
| } |
| } |
| |
| private static void setPpid(ITmfStateSystemBuilder ss, int ppid, int curThreadNode, long timestamp) { |
| int quark = ss.getQuarkRelativeAndAdd(curThreadNode, Attributes.PPID); |
| if (ss.queryOngoingState(quark).isNull()) { |
| ss.modifyAttribute(timestamp, ppid, quark); |
| } |
| } |
| |
| private static void setProcessName(ITmfStateSystemBuilder ss, String name, int curThreadNode, long timestamp) { |
| int quark = ss.getQuarkRelativeAndAdd(curThreadNode, Attributes.EXEC_NAME); |
| if (ss.queryOngoingState(quark).isNull()) { |
| /* If the value didn't exist previously, set it */ |
| ss.modifyAttribute(timestamp, name, quark); |
| } |
| } |
| } |