mirror of
https://github.com/OPM/ResInsight.git
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198 lines
7.9 KiB
C++
198 lines
7.9 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) 2011-2013 Ceetron AS
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//
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// This library may be used under the terms of either the GNU General Public License or
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// the GNU Lesser General Public License as follows:
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//
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// GNU General Public License Usage
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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// GNU Lesser General Public License Usage
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
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// for more details.
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//
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//##################################################################################################
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#pragma once
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#include "cvfBase.h"
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#include "cvfSystem.h"
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#include <set>
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#include "cvfAtomicCounter.h"
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#if !defined(CVF_ATOMIC_COUNTER_CLASS_EXISTS) && !defined(CVF_USE_NON_THREADSAFE_REFERENCE_COUNT)
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#error No support for atomics. Define CVF_USE_NON_THREADSAFE_REFERENCE_COUNT to be able to compile
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#endif
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namespace cvf {
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//==================================================================================================
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//
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// Base class for all reference counted objects
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//
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//==================================================================================================
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class Object
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{
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public:
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inline Object();
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inline virtual ~Object();
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inline int addRef() const;
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inline int release() const;
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inline int refCount() const;
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// Helpers for debugging, see the CVF_TRACK_ACTIVE_OBJECT_INSTANCES define
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static std::set<Object*>* activeObjectInstances();
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static void dumpActiveObjectInstances();
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private:
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#if defined(CVF_USE_NON_THREADSAFE_REFERENCE_COUNT)
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mutable int m_refCount;
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#elif defined(CVF_ATOMIC_COUNTER_CLASS_EXISTS)
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mutable AtomicCounter m_refCount;
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#else
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#error No support for atomics. Define CVF_USE_NON_THREADSAFE_REFERENCE_COUNT to be able to compile
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#endif
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CVF_DISABLE_COPY_AND_ASSIGN(Object);
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};
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//==================================================================================================
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//
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// Smart pointer class
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//
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//==================================================================================================
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template <typename T>
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class ref
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{
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public:
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ref(T* object = NULL);
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ref(const ref& other);
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template<typename T2> ref(const ref<T2>& other);
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~ref();
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ref& operator=(T* rhs);
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ref& operator=(ref rhs);
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template<typename T2> ref& operator=(const ref<T2>& rhs);
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inline T* operator->();
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inline const T* operator->() const;
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inline T& operator*();
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inline const T& operator*() const;
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inline T* p();
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inline const T* p() const;
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inline bool isNull() const;
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inline bool notNull() const;
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bool operator<(const ref& rhs) const;
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void swap(ref& other);
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private:
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T* m_object;
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};
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/// \relates cvf::ref
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/// @{
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template<typename T1, typename T2> inline bool operator==(const ref<T1>& a, const ref<T2>& b) { return a.p() == b.p(); } ///< Returns true if the internal pointers of refs \a a and \a b are equal.
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template<typename T1, typename T2> inline bool operator!=(const ref<T1>& a, const ref<T2>& b) { return a.p() != b.p(); } ///< Returns true if the internal pointers of refs \a a and \a b are different.
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template<typename T1, typename T2> inline bool operator==(const ref<T1>& a, T2* b) { return a.p() == b; } ///< Returns true if the internal pointer of ref \a a is equal to the naked pointer \a b.
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template<typename T1, typename T2> inline bool operator!=(const ref<T1>& a, T2* b) { return a.p() != b; } ///< Returns true if the internal pointer of ref \a a is different from the naked pointer \a b.
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template<typename T1, typename T2> inline bool operator==(T1* a, const ref<T2>& b) { return a == b.p(); } ///< Returns true if the naked pointer \a a is equal to the internal pointer of ref \a b.
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template<typename T1, typename T2> inline bool operator!=(T1* a, const ref<T2>& b) { return a != b.p(); } ///< Returns true if the naked pointer \a a is different from the internal pointer of ref \a b.
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/// Swap contents of \a a and \a b. Matches signature of std::swap().
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/// \todo Need to investigate which STL algorithms actually utilize the swap() function.
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template<typename T> inline void swap(ref<T>& a, ref<T>& b) { a.swap(b); }
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/// @}
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//==================================================================================================
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//
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// Smart pointer class for const pointers
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//
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//==================================================================================================
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template <typename T>
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class cref
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{
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public:
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cref(const T* object = NULL);
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cref(const cref& other);
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template<typename T2> cref(const cref<T2>& other);
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~cref();
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cref& operator=(const T* rhs);
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cref& operator=(cref rhs);
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template<typename T2> cref& operator=(const cref<T2>& rhs);
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inline const T* operator->() const;
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inline const T& operator*() const;
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inline const T* p() const;
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inline bool isNull() const;
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inline bool notNull() const;
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bool operator<(const cref& rhs) const;
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void swap(cref& other);
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private:
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const T* m_object;
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};
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/// \relates cvf::cref
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/// @{
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template<typename T1, typename T2> inline bool operator==(const cref<T1>& a, const cref<T2>& b) { return a.p() == b.p(); } ///< Returns true if the internal pointers of refs \a a and \a b are equal.
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template<typename T1, typename T2> inline bool operator!=(const cref<T1>& a, const cref<T2>& b) { return a.p() != b.p(); } ///< Returns true if the internal pointers of refs \a a and \a b are different.
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template<typename T1, typename T2> inline bool operator==(const cref<T1>& a, T2* b) { return a.p() == b; } ///< Returns true if the internal pointer of ref \a a is equal to the naked pointer \a b.
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template<typename T1, typename T2> inline bool operator!=(const cref<T1>& a, T2* b) { return a.p() != b; } ///< Returns true if the internal pointer of ref \a a is different from the naked pointer \a b.
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template<typename T1, typename T2> inline bool operator==(T1* a, const cref<T2>& b) { return a == b.p(); } ///< Returns true if the naked pointer \a a is equal to the internal pointer of ref \a b.
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template<typename T1, typename T2> inline bool operator!=(T1* a, const cref<T2>& b) { return a != b.p(); } ///< Returns true if the naked pointer \a a is different from the internal pointer of ref \a b.
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//==================================================================================================
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//
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// Creation of smart pointers.
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//
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//==================================================================================================
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template<typename T, class... Args>
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ref<T> make_ref(Args&&... args);
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template<typename T, class... Args>
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cref<T> make_cref(Args&&... args);
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/// @}
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}
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#include "cvfObject.inl"
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