C-<i>Bits</i>

00001 /* ====================================================================
00002  *              The CBITS Software License, Version 1.0
00003  *
00004  *               Copyright (c) 2002-2003 Bruce Lowery
00005  *                       All rights reserved
00006  *
00007  * Redistribution and use of this software, in source and binary forms, 
00008  * with or without modification, are permitted provided that the above 
00009  * copyright notice, this paragraph, and the following paragraph are 
00010  * retained in each source code file.
00011  *
00012  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
00013  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00014  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00015  * DISCLAIMED.  IN NO EVENT SHALL BRUCE LOWERY OR OTHER CONTRIBUTORS 
00016  * TO THE CBITS LIBRARY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00017  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00018  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
00019  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00020  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00021  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
00022  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00023  * SUCH DAMAGE.
00024  * ====================================================================
00025  */
00026 
00027 #ifndef __SAFE_PTR_H__
00028 #define __SAFE_PTR_H__
00029 
00030 #ifdef USE_PTHREAD
00031 #include <pthread.h>
00032 #elif defined WIN32
00033 #include <winnt.h>
00034 #endif
00035 
00036 #include <cbits/ref_ptr.h>
00037 #include <cbits/sync_ptr.h>
00038 
00039 namespace cbits
00040 {
00041 
00059 template< typename T >
00060 class safe_ptr : public ref_ptr<T>
00061 {
00062 public:
00063 
00069     safe_ptr<T>( T* t ) : ref_ptr<T>(t)
00070     {
00071     }
00072 
00073 
00079     safe_ptr<T>( const safe_ptr<T>& r )
00080         : ref_ptr<T>(r)
00081     {
00082     }
00083 
00084 
00090     safe_ptr<T>& operator=( const safe_ptr<T>& r )
00091     {
00092         ref_ptr<T>::operator=(r);
00093         return *this;
00094     }
00095 
00096 
00102     bool operator==( const safe_ptr<T>& r )
00103     {
00104         return ref_ptr<T>::operator==(r);
00105     }
00106 
00107 
00113     sync_ptr<T> operator->()
00114     {
00115         return sync_ptr<T>(_t);
00116     }
00117 
00118 
00124     T& operator*()
00125     {
00126         return sync_ptr<T>(_t);
00127     }
00128 
00129 
00137     virtual ~safe_ptr<T>()
00138     {
00139     }
00140 };
00141 
00142 };
00143 
00144 #endif
00145 
00146 /*
00147  * $Id: safe_ptr.h,v 1.2 2002/10/14 01:21:04 brulow Exp $
00148  *
00149  * History: (Add nothing manually below)
00150  * -----------------------------------------------------------------------
00151  *
00152  * $Log: safe_ptr.h,v $
00153  * Revision 1.2  2002/10/14 01:21:04  brulow
00154  * Add unit tests for pointer pkg
00155  *
00156  * Revision 1.1  2002/10/13 20:11:05  brulow
00157  * Add t-safe, ref-counting ptr
00158  *
00159  *
00160  */