projects / deliverable / tracecompass.git / blame
| Commit | Line | Data |
|---|---|---|
| 70f60307 MK |
1 | /******************************************************************************* |
| 2 | * Copyright (c) 2014 Ericsson | |
| 3 | * | |
| 4 | * All rights reserved. This program and the accompanying materials are made | |
| 5 | * available under the terms of the Eclipse Public License v1.0 which | |
| 6 | * accompanies this distribution, and is available at | |
| 7 | * http://www.eclipse.org/legal/epl-v10.html | |
| 8 | * | |
| 9 | * Contributors: | |
| 10 | * Matthew Khouzam - Initial API and implementation | |
| 11 | *******************************************************************************/ | |
| 12 | ||
| 13 | package org.eclipse.linuxtools.ctf.core.event.scope; | |
| 14 | ||
| 15 | import org.eclipse.jdt.annotation.NonNullByDefault; | |
| 16 | import org.eclipse.jdt.annotation.Nullable; | |
| 17 | ||
| 18 | /** | |
| 19 | * A lttng specific speedup node a root with accelerated returns for some scopes | |
| 20 | * of a lexical scope | |
| 21 | * | |
| 22 | * @author Matthew Khouzam | |
| 23 | * @since 3.1 | |
| 24 | */ | |
| 25 | @NonNullByDefault | |
| 26 | public class RootScope extends LexicalScope { | |
| 27 | ||
| 28 | /** | |
| 29 | * The scope constructor | |
| 30 | */ | |
| 31 | public RootScope() { | |
| 32 | super(null, ""); //$NON-NLS-1$ | |
| 33 | } | |
| 34 | ||
| 35 | @Override | |
| 36 | @Nullable | |
| 37 | public LexicalScope getChild(String name) { | |
| 38 | /* | |
| 39 | * This happens ~40 % of the time | |
| 40 | */ | |
| 41 | if (name.equals(EVENT_HEADER.toString())) { | |
| 42 | return EVENT_HEADER; | |
| 43 | } | |
| 44 | /* | |
| 45 | * This happens ~30 % of the time | |
| 46 | */ | |
| 47 | if (name.equals(FIELDS.toString())) { | |
| 48 | return FIELDS; | |
| 49 | } | |
| 50 | /* | |
| 51 | * This happens ~30 % of the time | |
| 52 | */ | |
| 53 | if (name.equals(CONTEXT.toString())) { | |
| 54 | return CONTEXT; | |
| 55 | } | |
| 56 | /* | |
| 57 | * This happens ~1 % of the time | |
| 58 | */ | |
| 59 | if (name.equals(PACKET_HEADER.toString())) { | |
| 60 | return PACKET_HEADER; | |
| 61 | } | |
| 62 | return super.getChild(name); | |
| 63 | } | |
| 64 | ||
| 65 | } |