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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef InstanceCounter_h
     27 #define InstanceCounter_h
     28 
     29 #include "wtf/Compiler.h"
     30 #include "wtf/WTFExport.h"
     31 
     32 namespace WTF {
     33 
     34 class String;
     35 WTF_EXPORT String dumpRefCountedInstanceCounts();
     36 
     37 #ifdef ENABLE_INSTANCE_COUNTER
     38 WTF_EXPORT void incrementInstanceCount(const char* extractNameFuncName, void* ptr);
     39 WTF_EXPORT void decrementInstanceCount(const char* extractNameFuncName, void* ptr);
     40 
     41 template<typename T>
     42 inline const char* extractNameFunc()
     43 {
     44     return WTF_PRETTY_FUNCTION;
     45 }
     46 
     47 template<typename T>
     48 inline void incrementInstanceCount(T* p)
     49 {
     50     incrementInstanceCount(extractNameFunc<T>(), p);
     51 }
     52 
     53 template<typename T>
     54 inline void decrementInstanceCount(T* p)
     55 {
     56     decrementInstanceCount(extractNameFunc<T>(), p);
     57 }
     58 
     59 #endif // ENABLE_INSTANCE_COUNTER
     60 
     61 } // namespace WTF
     62 
     63 #endif
     64