Panda3D
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00001 // Filename: threadSafePointerToBase.h 00002 // Created by: drose (28Apr06) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef THREADSAFEPOINTERTOBASE_H 00016 #define THREADSAFEPOINTERTOBASE_H 00017 00018 #include "pandabase.h" 00019 #include "pointerToVoid.h" 00020 #include "referenceCount.h" 00021 #include "typedef.h" 00022 #include "memoryUsage.h" 00023 #include "config_express.h" 00024 #include "atomicAdjust.h" 00025 00026 //////////////////////////////////////////////////////////////////// 00027 // Class : ThreadSafePointerToBase 00028 // Description : This is the base class for ThreadSafePointerTo and 00029 // ThreadSafeConstPointerTo. Don't try to use it 00030 // directly; use either derived class instead. 00031 //////////////////////////////////////////////////////////////////// 00032 template <class T> 00033 class ThreadSafePointerToBase : public PointerToVoid { 00034 public: 00035 typedef T To; 00036 00037 protected: 00038 INLINE ThreadSafePointerToBase(To *ptr); 00039 INLINE ThreadSafePointerToBase(const ThreadSafePointerToBase<T> ©); 00040 INLINE ~ThreadSafePointerToBase(); 00041 00042 INLINE void reassign(To *ptr); 00043 INLINE void reassign(const ThreadSafePointerToBase<To> ©); 00044 00045 #ifdef DO_MEMORY_USAGE 00046 void update_type(To *ptr); 00047 #endif // DO_MEMORY_USAGE 00048 00049 // No assignment or retrieval functions are declared in 00050 // ThreadSafePointerToBase, because we will have to specialize on const 00051 // vs. non-const later. 00052 00053 PUBLISHED: 00054 INLINE void clear(); 00055 00056 void output(ostream &out) const; 00057 }; 00058 00059 template<class T> 00060 INLINE ostream &operator <<(ostream &out, const ThreadSafePointerToBase<T> &pointer) { 00061 pointer.output(out); 00062 return out; 00063 } 00064 00065 #include "threadSafePointerToBase.I" 00066 00067 #endif