diff options
Diffstat (limited to 'base/refcnt.hh')
-rw-r--r-- | base/refcnt.hh | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/base/refcnt.hh b/base/refcnt.hh deleted file mode 100644 index de589f7c5..000000000 --- a/base/refcnt.hh +++ /dev/null @@ -1,123 +0,0 @@ -/* - * Copyright (c) 2002-2005 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __REFCNT_HH__ -#define __REFCNT_HH__ - -#include <stddef.h> //For the NULL macro definition - -class RefCounted -{ - private: - int count; - - private: - RefCounted(const RefCounted &); - - public: - RefCounted() : count(0) {} - virtual ~RefCounted() {} - - void incref() { ++count; } - void decref() { if (--count <= 0) delete this; } -}; - -template <class T> -class RefCountingPtr -{ - protected: - T *data; - - void copy(T *d) - { - data = d; - if (data) - data->incref(); - } - void del() - { - if (data) - data->decref(); - } - void set(T *d) - { - if (data == d) - return; - - del(); - copy(d); - } - - - public: - RefCountingPtr() : data(NULL) {} - RefCountingPtr(T *data) { copy(data); } - RefCountingPtr(const RefCountingPtr &r) { copy(r.data); } - ~RefCountingPtr() { del(); } - - T *operator->() { return data; } - T &operator*() { return *data; } - T *get() { return data; } - - const T *operator->() const { return data; } - const T &operator*() const { return *data; } - const T *get() const { return data; } - - RefCountingPtr &operator=(T *p) { set(p); return *this; } - RefCountingPtr &operator=(const RefCountingPtr &r) - { return operator=(r.data); } - - bool operator!() const { return data == 0; } - operator bool() const { return data != 0; } -}; - -template<class T> -bool operator==(const RefCountingPtr<T> &l, const RefCountingPtr<T> &r) -{ return l.get() == r.get(); } - -template<class T> -bool operator==(const RefCountingPtr<T> &l, const T *r) -{ return l.get() == r; } - -template<class T> -bool operator==(const T &l, const RefCountingPtr<T> &r) -{ return l == r.get(); } - -template<class T> -bool operator!=(const RefCountingPtr<T> &l, const RefCountingPtr<T> &r) -{ return l.get() != r.get(); } - -template<class T> -bool operator!=(const RefCountingPtr<T> &l, const T *r) -{ return l.get() != r; } - -template<class T> -bool operator!=(const T &l, const RefCountingPtr<T> &r) -{ return l != r.get(); } - -#endif // __REFCNT_HH__ |