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 30 void RefCountedLeakCounter::suppressMessages(const char*) { } 31 void RefCountedLeakCounter::cancelMessageSuppression(const char*) { } 32 33 RefCountedLeakCounter::RefCountedLeakCounter(const char*) { } 34 RefCountedLeakCounter::~RefCountedLeakCounter() { } 35 36 void RefCountedLeakCounter::increment() { } 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