/[resiprocate]/branches/b-identity-0505/dum/RefCountedDestroyer.hxx
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Annotation of /branches/b-identity-0505/dum/RefCountedDestroyer.hxx

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Revision 4521 - (hide annotations) (download)
Thu May 5 22:20:57 2005 UTC (14 years, 8 months ago) by derek
File size: 3737 byte(s)
branch for identity hacking
1 derek 3138 #if !defined(RESIP_REFCOUNTEDDESTROYER_HXX)
2     #define RESIP_REFCOUNTEDDESTROYER_HXX
3    
4     namespace resip
5     {
6    
7     //designed to be used by composition, does not destroy itself.
8     template<class T>
9     class RefCountedDestroyer
10     {
11     public:
12     class Guard
13     {
14     public:
15     void destroy()
16     {
17     mRefCountedDestroyer.mDestroying = true;
18     }
19    
20     bool destroyed()
21     {
22     return mRefCountedDestroyer.mDestroying;
23     }
24    
25     Guard(RefCountedDestroyer& rcd)
26     : mRefCountedDestroyer(rcd)
27     {
28     mRefCountedDestroyer.mCount++;
29     }
30    
31     ~Guard()
32     {
33     mRefCountedDestroyer.mCount--;
34     if (mRefCountedDestroyer.mDestroying && mRefCountedDestroyer.mCount == 0)
35     {
36     delete mRefCountedDestroyer.mTarget;
37     }
38     }
39     private:
40     RefCountedDestroyer& mRefCountedDestroyer;
41     };
42    
43     RefCountedDestroyer(T* target) :
44     mTarget(target),
45     mCount(0),
46     mDestroying(false)
47     {
48     }
49     private:
50     friend class Guard;
51     T* mTarget;
52     int mCount;
53     bool mDestroying;
54     };
55    
56     }
57    
58     #endif
59 jason 4010
60     /* ====================================================================
61     * The Vovida Software License, Version 1.0
62     *
63     * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
64     *
65     * Redistribution and use in source and binary forms, with or without
66     * modification, are permitted provided that the following conditions
67     * are met:
68     *
69     * 1. Redistributions of source code must retain the above copyright
70     * notice, this list of conditions and the following disclaimer.
71     *
72     * 2. Redistributions in binary form must reproduce the above copyright
73     * notice, this list of conditions and the following disclaimer in
74     * the documentation and/or other materials provided with the
75     * distribution.
76     *
77     * 3. The names "VOCAL", "Vovida Open Communication Application Library",
78     * and "Vovida Open Communication Application Library (VOCAL)" must
79     * not be used to endorse or promote products derived from this
80     * software without prior written permission. For written
81     * permission, please contact vocal@vovida.org.
82     *
83     * 4. Products derived from this software may not be called "VOCAL", nor
84     * may "VOCAL" appear in their name, without prior written
85     * permission of Vovida Networks, Inc.
86     *
87     * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
88     * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
89     * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
90     * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
91     * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
92     * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
93     * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
94     * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
95     * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
96     * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
97     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
98     * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
99     * DAMAGE.
100     *
101     * ====================================================================
102     *
103     * This software consists of voluntary contributions made by Vovida
104     * Networks, Inc. and many individuals on behalf of Vovida Networks,
105     * Inc. For more information on Vovida Networks, Inc., please see
106     * <http://www.vovida.org/>.
107     *
108     */

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