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
26 namespace WTF {
27
28 #ifdef NDEBUG
29
suppressMessages(const char *)30 void RefCountedLeakCounter::suppressMessages(const char*) { }
cancelMessageSuppression(const char *)31 void RefCountedLeakCounter::cancelMessageSuppression(const char*) { }
32
RefCountedLeakCounter(const char *)33 RefCountedLeakCounter::RefCountedLeakCounter(const char*) { }
~RefCountedLeakCounter()34 RefCountedLeakCounter::~RefCountedLeakCounter() { }
35
increment()36 void RefCountedLeakCounter::increment() { }
decrement()37 void RefCountedLeakCounter::decrement() { }
38
39 #else
40
41 #define LOG_CHANNEL_PREFIX Log
42 static WTFLogChannel LogRefCountedLeaks = { 0x00000000, "", WTFLogChannelOn };
43
44 typedef HashCountedSet<const char*, PtrHash<const char*> > ReasonSet;
45 static ReasonSet* leakMessageSuppressionReasons;
46
47 void RefCountedLeakCounter::suppressMessages(const char* reason)
48 {
49 if (!leakMessageSuppressionReasons)
50 leakMessageSuppressionReasons = new ReasonSet;
51 leakMessageSuppressionReasons->add(reason);
52 }
53
54 void RefCountedLeakCounter::cancelMessageSuppression(const char* reason)
55 {
56 ASSERT(leakMessageSuppressionReasons);
57 ASSERT(leakMessageSuppressionReasons->contains(reason));
58 leakMessageSuppressionReasons->remove(reason);
59 }
60
61 RefCountedLeakCounter::RefCountedLeakCounter(const char* description)
62 : m_description(description)
63 {
64 }
65
66 RefCountedLeakCounter::~RefCountedLeakCounter()
67 {
68 static bool loggedSuppressionReason;
69 if (m_count) {
70 if (!leakMessageSuppressionReasons || leakMessageSuppressionReasons->isEmpty())
71 LOG(RefCountedLeaks, "LEAK: %u %s", m_count, m_description);
72 else if (!loggedSuppressionReason) {
73 // This logs only one reason. Later we could change it so we log all the reasons.
74 LOG(RefCountedLeaks, "No leak checking done: %s", leakMessageSuppressionReasons->begin()->first);
75 loggedSuppressionReason = true;
76 }
77 }
78 }
79
80 void RefCountedLeakCounter::increment()
81 {
82 #if ENABLE(JSC_MULTIPLE_THREADS)
83 atomicIncrement(&m_count);
84 #else
85 ++m_count;
86 #endif
87 }
88
89 void RefCountedLeakCounter::decrement()
90 {
91 #if ENABLE(JSC_MULTIPLE_THREADS)
92 atomicDecrement(&m_count);
93 #else
94 --m_count;
95 #endif
96 }
97
98 #endif
99
100 } // namespace WTF
101