| /******************************************************************************* |
| * 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.virtual.resources.StateValues; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; |
| |
| /** |
| * @author Cédric Biancheri |
| */ |
| public class ProcessForkContainerHandler extends VMKernelEventHandler { |
| |
| /** |
| * Constructor |
| * |
| * @param layout |
| * The event layout |
| * @param sp |
| * The state provider |
| */ |
| public ProcessForkContainerHandler(IKernelAnalysisEventLayout layout, FusedVirtualMachineStateProvider sp) { |
| super(layout, sp); |
| } |
| |
| @Override |
| public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) { |
| ITmfEventField content = event.getContent(); |
| ITmfEventField field; |
| String machineHost = event.getTrace().getHostId(); |
| String childProcessName = (String) content.getField(getLayout().fieldChildComm()).getValue(); |
| long childVTIDs[] = { }; |
| field = content.getField("vtids"); //$NON-NLS-1$ |
| if (field != null) { |
| childVTIDs = (long[]) field.getValue(); |
| } |
| Long childNSInum = content.getFieldValue(Long.class, "child_ns_inum"); //$NON-NLS-1$ |
| if (childNSInum == null) { |
| childNSInum = -1L; |
| } else { |
| /* Save the namespace id somewhere so it can be reused */ |
| ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getMachinesNode(ss), machineHost, FusedAttributes.CONTAINERS, Long.toString(childNSInum)); |
| } |
| Long parentNSInum = content.getFieldValue(Long.class, "parent_ns_inum"); //$NON-NLS-1$ |
| |
| Integer parentTid = ((Long) content.getField(getLayout().fieldParentTid()).getValue()).intValue(); |
| Integer childTid = ((Long) content.getField(getLayout().fieldChildTid()).getValue()).intValue(); |
| |
| Integer parentTidNode = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getNodeThreads(ss), machineHost, parentTid.toString()); |
| Integer childTidNode = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getNodeThreads(ss), machineHost, childTid.toString()); |
| |
| /* Assign the PPID to the new process */ |
| int quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.PPID); |
| long timestamp = FusedVMEventHandlerUtils.getTimestamp(event); |
| ss.modifyAttribute(timestamp, parentTid, quark); |
| |
| /* Set the new process' exec_name */ |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.EXEC_NAME); |
| ss.modifyAttribute(timestamp, childProcessName, quark); |
| |
| /* Set the new process' status */ |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.STATUS); |
| ss.modifyAttribute(timestamp, StateValues.PROCESS_STATUS_WAIT_FOR_CPU, quark); |
| |
| /* Set the process' syscall name, to be the same as the parent's */ |
| quark = ss.getQuarkRelativeAndAdd(parentTidNode, FusedAttributes.SYSTEM_CALL); |
| Object syscall = ss.queryOngoing(quark); |
| if (syscall != null) { |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.SYSTEM_CALL); |
| ss.modifyAttribute(timestamp, syscall, quark); |
| } |
| |
| Integer level = 0; |
| Integer maxLevel = childVTIDs.length; |
| |
| /* |
| * Set the max level. It is useful if we want to know the depth of the |
| * hierarchy |
| */ |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.NS_MAX_LEVEL); |
| ss.modifyAttribute(timestamp, maxLevel, quark); |
| |
| for (long vtid : childVTIDs) { |
| if (vtid == childTid) { |
| /* Set the namespace level */ |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.NS_LEVEL); |
| ss.modifyAttribute(timestamp, level, quark); |
| |
| /* Set the namespace ID */ |
| quark = ss.optQuarkRelative(parentTidNode, FusedAttributes.NS_INUM); |
| if (quark == ITmfStateSystem.INVALID_ATTRIBUTE) { |
| continue; |
| } |
| |
| Object nsInum = ss.queryOngoing(quark); |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.NS_INUM); |
| ss.modifyAttribute(timestamp, nsInum, quark); |
| |
| /* Save the tid */ |
| if (nsInum instanceof Long) { |
| quark = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getMachinesNode(ss), machineHost, FusedAttributes.CONTAINERS, String.valueOf((long) nsInum)); |
| quark = FusedVMEventHandlerUtils.saveContainerThreadID(ss, quark, childTid); |
| ss.modifyAttribute(timestamp, (int) vtid, quark); |
| } |
| |
| /* Nothing else to do at the level 0 */ |
| continue; |
| } |
| /* Entering an other level */ |
| level++; |
| |
| if (level != maxLevel - 1 || childNSInum.equals(parentNSInum)) { |
| /* |
| * We are not at the last level or we are still in the namespace |
| * of the parent |
| */ |
| |
| /* Create a new level for the current vtid */ |
| childTidNode = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.VTID); |
| ss.modifyAttribute(timestamp, (int) vtid, childTidNode); |
| |
| /* Set the VPPID attribute for the child */ |
| parentTidNode = ss.getQuarkRelativeAndAdd(parentTidNode, FusedAttributes.VTID); |
| // When a process is forked but the parent was not state dumped, |
| // we do not know the vppid |
| Object parentVtid = ss.queryOngoing(parentTidNode); |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.VPPID); |
| ss.modifyAttribute(timestamp, parentVtid, quark); |
| |
| /* Set the ns_inum attribute for the child */ |
| quark = ss.optQuarkRelative(parentTidNode, FusedAttributes.NS_INUM); |
| // We do not have namespace information for the parent, we only |
| // know the last of the child |
| if (quark == ITmfStateSystem.INVALID_ATTRIBUTE) { |
| Object value = null; |
| if (level == maxLevel - 1) { |
| value = childNSInum; |
| |
| /* Save the tid */ |
| quark = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getMachinesNode(ss), machineHost, FusedAttributes.CONTAINERS, Long.toString((long) value)); |
| quark = FusedVMEventHandlerUtils.saveContainerThreadID(ss, quark, childTid); |
| ss.modifyAttribute(timestamp, (int) vtid, quark); |
| } |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.NS_INUM); |
| ss.modifyAttribute(timestamp, value, quark); |
| } else { |
| Object value = ss.queryOngoing(quark); |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.NS_INUM); |
| ss.modifyAttribute(timestamp, value, quark); |
| |
| /* Save the tid */ |
| if (value instanceof Long) { |
| quark = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getMachinesNode(ss), machineHost, FusedAttributes.CONTAINERS, Long.toString((long) value)); |
| quark = FusedVMEventHandlerUtils.saveContainerThreadID(ss, quark, childTid); |
| ss.modifyAttribute(timestamp, (int) vtid, quark); |
| } |
| } |
| |
| } else { |
| /* Last level and new namespace */ |
| |
| /* Create a new level for the current vtid */ |
| childTidNode = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.VTID); |
| ss.modifyAttribute(timestamp, (int) vtid, childTidNode); |
| |
| /* Set the VPPID attribute for the child */ |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.VPPID); |
| ss.modifyAttribute(timestamp, 0, quark); |
| |
| /* Set the ns_inum attribute for the child */ |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.NS_INUM); |
| ss.modifyAttribute(timestamp, childNSInum, quark); |
| |
| /* Save the tid */ |
| int quarkContainer = ss.getQuarkRelativeAndAdd(FusedVMEventHandlerUtils.getMachinesNode(ss), machineHost, FusedAttributes.CONTAINERS, Long.toString(childNSInum)); |
| quark = FusedVMEventHandlerUtils.saveContainerThreadID(ss, quarkContainer, childTid); |
| ss.modifyAttribute(timestamp, (int) vtid, quark); |
| |
| /* Save the parent's namespace ID */ |
| quark = ss.getQuarkRelativeAndAdd(quarkContainer, FusedAttributes.PARENT); |
| if (ss.queryOngoingState(quark).isNull() && parentNSInum != null) { |
| ss.modifyAttribute(ss.getStartTime(), parentNSInum, quark); |
| } |
| } |
| |
| /* Set the ns_level attribute for the child */ |
| quark = ss.getQuarkRelativeAndAdd(childTidNode, FusedAttributes.NS_LEVEL); |
| ss.modifyAttribute(timestamp, level, quark); |
| } |
| |
| } |
| |
| } |
