1/*
2 * Copyright (C) 2008 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21#include "config.h"
22#include <wtf/RefCountedLeakCounter.h>
23
24#include <wtf/HashCountedSet.h>
25
26namespace WTF {
27
28#ifdef NDEBUG
29
30void RefCountedLeakCounter::suppressMessages(const char*) { }
31void RefCountedLeakCounter::cancelMessageSuppression(const char*) { }
32
33RefCountedLeakCounter::RefCountedLeakCounter(const char*) { }
34RefCountedLeakCounter::~RefCountedLeakCounter() { }
35
36void RefCountedLeakCounter::increment() { }
37void RefCountedLeakCounter::decrement() { }
38
39#else
40
41#define LOG_CHANNEL_PREFIX Log
42#if RELEASE_LOG_DISABLED
43static WTFLogChannel LogRefCountedLeaks = { WTFLogChannelState::On, "RefCountedLeaks", WTFLogLevel::Error };
44#else
45static WTFLogChannel LogRefCountedLeaks = { WTFLogChannelState::On, "RefCountedLeaks", WTFLogLevel::Error, LOG_CHANNEL_WEBKIT_SUBSYSTEM, OS_LOG_DEFAULT };
46#endif
47
48typedef HashCountedSet<const char*, PtrHash<const char*>> ReasonSet;
49static ReasonSet* leakMessageSuppressionReasons;
50
51void RefCountedLeakCounter::suppressMessages(const char* reason)
52{
53 if (!leakMessageSuppressionReasons)
54 leakMessageSuppressionReasons = new ReasonSet;
55 leakMessageSuppressionReasons->add(reason);
56}
57
58void RefCountedLeakCounter::cancelMessageSuppression(const char* reason)
59{
60 ASSERT(leakMessageSuppressionReasons);
61 ASSERT(leakMessageSuppressionReasons->contains(reason));
62 leakMessageSuppressionReasons->remove(reason);
63}
64
65RefCountedLeakCounter::RefCountedLeakCounter(const char* description)
66 : m_description(description)
67{
68}
69
70RefCountedLeakCounter::~RefCountedLeakCounter()
71{
72 static bool loggedSuppressionReason;
73 if (m_count) {
74 if (!leakMessageSuppressionReasons || leakMessageSuppressionReasons->isEmpty())
75 LOG(RefCountedLeaks, "LEAK: %u %s", m_count.load(), m_description);
76 else if (!loggedSuppressionReason) {
77 // This logs only one reason. Later we could change it so we log all the reasons.
78 LOG(RefCountedLeaks, "No leak checking done: %s", leakMessageSuppressionReasons->begin()->key);
79 loggedSuppressionReason = true;
80 }
81 }
82}
83
84void RefCountedLeakCounter::increment()
85{
86 ++m_count;
87}
88
89void RefCountedLeakCounter::decrement()
90{
91 --m_count;
92}
93
94#endif
95
96} // namespace WTF
97