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comparison graal/com.oracle.truffle.api.object/src/com/oracle/truffle/api/object/DebugCounter.java @ 18407:f439fdb137a3

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Truffle: initial commit of object API
author Andreas Woess <andreas.woess@jku.at>
date Tue, 18 Nov 2014 16:18:45 +0100
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18406:194041c3fdab 18407:f439fdb137a3
1 /*
2 * Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package com.oracle.truffle.api.object;
26
27 import java.io.*;
28 import java.util.*;
29 import java.util.concurrent.atomic.*;
30
31 public final class DebugCounter {
32 private static final ArrayList<DebugCounter> allCounters = new ArrayList<>();
33
34 private final String name;
35 private final AtomicLong value;
36
37 private DebugCounter(String name) {
38 this.name = name;
39 this.value = new AtomicLong();
40 allCounters.add(this);
41 }
42
43 public static DebugCounter create(String name) {
44 return new DebugCounter(name);
45 }
46
47 public long get() {
48 return value.get();
49 }
50
51 public void inc() {
52 value.incrementAndGet();
53 }
54
55 @Override
56 public String toString() {
57 return name + ": " + value;
58 }
59
60 public static void dumpCounters() {
61 dumpCounters(System.out);
62 }
63
64 public static void dumpCounters(PrintStream out) {
65 for (DebugCounter counter : allCounters) {
66 out.println(counter);
67 }
68 }
69 }