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