1 /*
2 * Copyright (c) 2020, Google LLC and others
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Distribution License v. 1.0 which is available at
6 * http://www.eclipse.org/org/documents/edl-v10.php.
7 *
8 * SPDX-License-Identifier: BSD-3-Clause
9 */
10
11 package org.eclipse.jgit.logging;
12
13 import java.util.ArrayList;
14 import java.util.Collections;
15 import java.util.List;
16
17 /**
18 * Singleton that collects performance logs.
19 *
20 * @since 5.10
21 */
22 public class PerformanceLogContext {
23 /** Singleton instance that stores the statistics. */
24 private static final PerformanceLogContext INSTANCE = new PerformanceLogContext();
25
26 /** List that stores events as performance logs. */
27 private static final ThreadLocal<List<PerformanceLogRecord>> eventRecords = ThreadLocal
28 .withInitial(ArrayList::new);
29
30 private PerformanceLogContext() {
31 }
32
33 /**
34 * Get the instance of the context.
35 *
36 * @return instance of performance log context.
37 */
38 public static PerformanceLogContext getInstance() {
39 return INSTANCE;
40 }
41
42 /**
43 * Get the unmodifiable list of events as performance records.
44 *
45 * @return unmodifiable list of events as performance logs.
46 */
47 public List<PerformanceLogRecord> getEventRecords() {
48 return Collections.unmodifiableList(eventRecords.get());
49 }
50
51 /**
52 * Adds a performance log record to the current list of events.
53 *
54 * @param record
55 * performance log record that is going to be added.
56 */
57 public void addEvent(PerformanceLogRecord record) {
58 eventRecords.get().add(record);
59 }
60
61 /**
62 * Removes all of the existing records from the current list of events.
63 */
64 public void cleanEvents() {
65 eventRecords.remove();
66 }
67 }