1 /////////////////////////////////////////////////////////////////////////////
2 //
3 // (C) Copyright Ion Gaztanaga  2014-2014
4 //
5 // Distributed under the Boost Software License, Version 1.0.
6 //    (See accompanying file LICENSE_1_0.txt or copy at
7 //          http://www.boost.org/LICENSE_1_0.txt)
8 //
9 // See http://www.boost.org/libs/intrusive for documentation.
10 //
11 /////////////////////////////////////////////////////////////////////////////
12 
13 #ifndef BOOST_INTRUSIVE_DETAIL_EXCEPTION_DISPOSER_HPP
14 #define BOOST_INTRUSIVE_DETAIL_EXCEPTION_DISPOSER_HPP
15 
16 #ifndef BOOST_CONFIG_HPP
17 #  include <boost/config.hpp>
18 #endif
19 
20 #if defined(BOOST_HAS_PRAGMA_ONCE)
21 #  pragma once
22 #endif
23 
24 namespace boost {
25 namespace intrusive {
26 namespace detail {
27 
28 template<class Container, class Disposer>
29 class exception_disposer
30 {
31    Container *cont_;
32    Disposer  &disp_;
33 
34    exception_disposer(const exception_disposer&);
35    exception_disposer &operator=(const exception_disposer&);
36 
37    public:
exception_disposer(Container & cont,Disposer & disp)38    exception_disposer(Container &cont, Disposer &disp)
39       :  cont_(&cont), disp_(disp)
40    {}
41 
release()42    void release()
43    {  cont_ = 0;  }
44 
~exception_disposer()45    ~exception_disposer()
46    {
47       if(cont_){
48          cont_->clear_and_dispose(disp_);
49       }
50    }
51 };
52 
53 template<class Container, class Disposer, class SizeType>
54 class exception_array_disposer
55 {
56    Container *cont_;
57    Disposer  &disp_;
58    SizeType  &constructed_;
59 
60    exception_array_disposer(const exception_array_disposer&);
61    exception_array_disposer &operator=(const exception_array_disposer&);
62 
63    public:
64 
exception_array_disposer(Container & cont,Disposer & disp,SizeType & constructed)65    exception_array_disposer
66       (Container &cont, Disposer &disp, SizeType &constructed)
67       :  cont_(&cont), disp_(disp), constructed_(constructed)
68    {}
69 
release()70    void release()
71    {  cont_ = 0;  }
72 
~exception_array_disposer()73    ~exception_array_disposer()
74    {
75       SizeType n = constructed_;
76       if(cont_){
77          while(n--){
78             cont_[n].clear_and_dispose(disp_);
79          }
80       }
81    }
82 };
83 
84 }  //namespace detail{
85 }  //namespace intrusive{
86 }  //namespace boost{
87 
88 #endif //BOOST_INTRUSIVE_DETAIL_EXCEPTION_DISPOSER_HPP
89