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 | ||
f357bcd4 | 13 | package org.eclipse.tracecompass.ctf.core.event.scope; |
70f60307 MK |
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 | |
70f60307 MK |
23 | */ |
24 | @NonNullByDefault | |
fbe6fa6f | 25 | public final class RootScope extends LexicalScope { |
70f60307 MK |
26 | |
27 | /** | |
28 | * The scope constructor | |
29 | */ | |
30 | public RootScope() { | |
fbe6fa6f | 31 | super(); |
70f60307 MK |
32 | } |
33 | ||
34 | @Override | |
35 | @Nullable | |
fbe6fa6f | 36 | public ILexicalScope getChild(String name) { |
70f60307 MK |
37 | /* |
38 | * This happens ~40 % of the time | |
39 | */ | |
fbe6fa6f | 40 | if (name.equals(EVENT_HEADER.getPath())) { |
70f60307 MK |
41 | return EVENT_HEADER; |
42 | } | |
43 | /* | |
44 | * This happens ~30 % of the time | |
45 | */ | |
fbe6fa6f | 46 | if (name.equals(FIELDS.getPath())) { |
70f60307 MK |
47 | return FIELDS; |
48 | } | |
49 | /* | |
50 | * This happens ~30 % of the time | |
51 | */ | |
fbe6fa6f | 52 | if (name.equals(CONTEXT.getPath())) { |
70f60307 MK |
53 | return CONTEXT; |
54 | } | |
55 | /* | |
56 | * This happens ~1 % of the time | |
57 | */ | |
fbe6fa6f | 58 | if (name.equals(PACKET_HEADER.getPath())) { |
70f60307 MK |
59 | return PACKET_HEADER; |
60 | } | |
61 | return super.getChild(name); | |
62 | } | |
63 | ||
64 | } |