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 "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 !defined(LOG_DISABLED) || !LOG_DISABLED
43static WTFLogChannel LogRefCountedLeaks = { 0x00000000, "", WTFLogChannelOn };
44#endif
45
46typedef HashCountedSet<const char*, PtrHash<const char*> > ReasonSet;
47static ReasonSet* leakMessageSuppressionReasons;
48
49void RefCountedLeakCounter::suppressMessages(const char* reason)
50{
51 if (!leakMessageSuppressionReasons)
52 leakMessageSuppressionReasons = new ReasonSet;
53 leakMessageSuppressionReasons->add(value: reason);
54}
55
56void RefCountedLeakCounter::cancelMessageSuppression(const char* reason)
57{
58 ASSERT(leakMessageSuppressionReasons);
59 ASSERT(leakMessageSuppressionReasons->contains(reason));
60 leakMessageSuppressionReasons->remove(value: reason);
61}
62
63RefCountedLeakCounter::RefCountedLeakCounter(const char* description)
64 : m_description(description)
65{
66}
67
68RefCountedLeakCounter::~RefCountedLeakCounter()
69{
70 static bool loggedSuppressionReason;
71 if (m_count) {
72 if (!leakMessageSuppressionReasons || leakMessageSuppressionReasons->isEmpty())
73 LOG(RefCountedLeaks, "LEAK: %u %s", m_count, m_description);
74 else if (!loggedSuppressionReason) {
75 // This logs only one reason. Later we could change it so we log all the reasons.
76 LOG(RefCountedLeaks, "No leak checking done: %s", leakMessageSuppressionReasons->begin()->first);
77 loggedSuppressionReason = true;
78 }
79 }
80}
81
82void RefCountedLeakCounter::increment()
83{
84#if ENABLE(JSC_MULTIPLE_THREADS)
85 atomicIncrement(&m_count);
86#else
87 ++m_count;
88#endif
89}
90
91void RefCountedLeakCounter::decrement()
92{
93#if ENABLE(JSC_MULTIPLE_THREADS)
94 atomicDecrement(&m_count);
95#else
96 --m_count;
97#endif
98}
99
100#endif
101
102} // namespace WTF
103

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/wtf/RefCountedLeakCounter.cpp