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25 <div class=
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26 <a name=
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27 <div class=
"refnamediv">
28 <h2><span class=
"refentrytitle">Class template fast_pool_allocator
</span></h2>
29 <p>boost::fast_pool_allocator
— A C++ Standard Library conforming allocator geared towards allocating single chunks.
</p>
31 <h2 xmlns:
rev=
"http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class=
"refsynopsisdiv-title">Synopsis
</h2>
32 <div xmlns:
rev=
"http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class=
"refsynopsisdiv"><pre class=
"synopsis"><span class=
"comment">// In header:
<<a class=
"link" href=
"../header/boost/pool/pool_alloc_hpp.html" title=
"Header <boost/pool/pool_alloc.hpp>">boost/pool/pool_alloc.hpp
</a>>
34 </span><span class=
"keyword">template
</span><span class=
"special"><</span><span class=
"keyword">typename
</span> T
<span class=
"special">,
</span> <span class=
"keyword">typename
</span> UserAllocator
<span class=
"special">,
</span> <span class=
"keyword">typename
</span> Mutex
<span class=
"special">,
</span>
35 <span class=
"keyword">unsigned
</span> NextSize
<span class=
"special">,
</span> <span class=
"keyword">unsigned
</span> MaxSize
<span class=
"special">></span>
36 <span class=
"keyword">class
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a> <span class=
"special">{
</span>
37 <span class=
"keyword">public
</span><span class=
"special">:
</span>
38 <span class=
"comment">// types
</span>
39 <span class=
"keyword">typedef
</span> <span class=
"identifier">T
</span> <a name=
"boost.fast_pool_allocator.value_type"></a><span class=
"identifier">value_type
</span><span class=
"special">;
</span>
40 <span class=
"keyword">typedef
</span> <span class=
"identifier">UserAllocator
</span> <a name=
"boost.fast_pool_allocator.user_allocator"></a><span class=
"identifier">user_allocator
</span><span class=
"special">;
</span>
41 <span class=
"keyword">typedef
</span> <span class=
"identifier">Mutex
</span> <a name=
"boost.fast_pool_allocator.mutex"></a><span class=
"identifier">mutex
</span><span class=
"special">;
</span>
42 <span class=
"keyword">typedef
</span> <span class=
"identifier">value_type
</span> <span class=
"special">*
</span> <a name=
"boost.fast_pool_allocator.pointer"></a><span class=
"identifier">pointer
</span><span class=
"special">;
</span>
43 <span class=
"keyword">typedef
</span> <span class=
"keyword">const
</span> <span class=
"identifier">value_type
</span> <span class=
"special">*
</span> <a name=
"boost.fast_pool_allocator.const_pointer"></a><span class=
"identifier">const_pointer
</span><span class=
"special">;
</span>
44 <span class=
"keyword">typedef
</span> <span class=
"identifier">value_type
</span> <span class=
"special">&</span> <a name=
"boost.fast_pool_allocator.reference"></a><span class=
"identifier">reference
</span><span class=
"special">;
</span>
45 <span class=
"keyword">typedef
</span> <span class=
"keyword">const
</span> <span class=
"identifier">value_type
</span> <span class=
"special">&</span> <a name=
"boost.fast_pool_allocator.const_reference"></a><span class=
"identifier">const_reference
</span><span class=
"special">;
</span>
46 <span class=
"keyword">typedef
</span> <a class=
"link" href=
"pool.html" title=
"Class template pool">pool
</a><span class=
"special"><</span> <span class=
"identifier">UserAllocator
</span> <span class=
"special">></span><span class=
"special">::
</span><span class=
"identifier">size_type
</span> <a name=
"boost.fast_pool_allocator.size_type"></a><span class=
"identifier">size_type
</span><span class=
"special">;
</span>
47 <span class=
"keyword">typedef
</span> <a class=
"link" href=
"pool.html" title=
"Class template pool">pool
</a><span class=
"special"><</span> <span class=
"identifier">UserAllocator
</span> <span class=
"special">></span><span class=
"special">::
</span><span class=
"identifier">difference_type
</span> <a name=
"boost.fast_pool_allocator.difference_type"></a><span class=
"identifier">difference_type
</span><span class=
"special">;
</span>
49 <span class=
"comment">// member classes/structs/unions
</span>
51 <span class=
"comment">// Nested class rebind allows for transformation from fast_pool_allocator
<T
>
52 // to fast_pool_allocator
<U
>.
</span>
53 <span class=
"keyword">template
</span><span class=
"special"><</span><span class=
"keyword">typename
</span> U
<span class=
"special">></span>
54 <span class=
"keyword">struct
</span> <a class=
"link" href=
"fast_pool_allocator/rebind.html" title=
"Struct template rebind">rebind
</a> <span class=
"special">{
</span>
55 <span class=
"comment">// types
</span>
56 <span class=
"keyword">typedef
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a><span class=
"special"><</span> <span class=
"identifier">U
</span><span class=
"special">,
</span> <span class=
"identifier">UserAllocator
</span><span class=
"special">,
</span> <span class=
"identifier">Mutex
</span><span class=
"special">,
</span> <span class=
"identifier">NextSize
</span><span class=
"special">,
</span> <span class=
"identifier">MaxSize
</span> <span class=
"special">></span> <a class=
"link" href=
"fast_pool_allocator/rebind.html#boost.fast_pool_allocator.rebind.other"><span class=
"identifier">other
</span></a><span class=
"special">;
</span>
57 <span class=
"special">}
</span><span class=
"special">;
</span>
59 <span class=
"comment">//
<a class=
"link" href=
"fast_pool_allocator.html#boost.fast_pool_allocatorconstruct-copy-destruct">construct/copy/destruct
</a></span>
60 <a class=
"link" href=
"fast_pool_allocator.html#id378382-bb"><span class=
"identifier">fast_pool_allocator
</span></a><span class=
"special">(
</span><span class=
"special">)
</span><span class=
"special">;
</span>
61 <span class=
"keyword">template
</span><span class=
"special"><</span><span class=
"keyword">typename
</span> U
<span class=
"special">></span>
62 <a class=
"link" href=
"fast_pool_allocator.html#id378396-bb"><span class=
"identifier">fast_pool_allocator
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a><span class=
"special"><</span> <span class=
"identifier">U
</span><span class=
"special">,
</span> <span class=
"identifier">UserAllocator
</span><span class=
"special">,
</span> <span class=
"identifier">Mutex
</span><span class=
"special">,
</span> <span class=
"identifier">NextSize
</span><span class=
"special">,
</span> <span class=
"identifier">MaxSize
</span> <span class=
"special">></span> <span class=
"special">&</span><span class=
"special">)
</span><span class=
"special">;
</span>
64 <span class=
"comment">//
<a class=
"link" href=
"fast_pool_allocator.html#id378321-bb">public member functions
</a></span>
65 <span class=
"keyword">void
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378323-bb"><span class=
"identifier">construct
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span><span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">value_type
</span> <span class=
"special">&</span><span class=
"special">)
</span><span class=
"special">;
</span>
66 <span class=
"keyword">void
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378339-bb"><span class=
"identifier">destroy
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span><span class=
"special">)
</span><span class=
"special">;
</span>
67 <span class=
"keyword">bool
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378353-bb"><span class=
"keyword">operator
</span><span class=
"special">==
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a> <span class=
"special">&</span><span class=
"special">)
</span> <span class=
"keyword">const
</span><span class=
"special">;
</span>
68 <span class=
"keyword">bool
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378368-bb"><span class=
"keyword">operator
</span><span class=
"special">!=
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a> <span class=
"special">&</span><span class=
"special">)
</span> <span class=
"keyword">const
</span><span class=
"special">;
</span>
70 <span class=
"comment">//
<a class=
"link" href=
"fast_pool_allocator.html#id378425-bb">public static functions
</a></span>
71 <span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378428-bb"><span class=
"identifier">address
</span></a><span class=
"special">(
</span><span class=
"identifier">reference
</span><span class=
"special">)
</span><span class=
"special">;
</span>
72 <span class=
"keyword">static
</span> <span class=
"identifier">const_pointer
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378438-bb"><span class=
"identifier">address
</span></a><span class=
"special">(
</span><span class=
"identifier">const_reference
</span><span class=
"special">)
</span><span class=
"special">;
</span>
73 <span class=
"keyword">static
</span> <span class=
"identifier">size_type
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378449-bb"><span class=
"identifier">max_size
</span></a><span class=
"special">(
</span><span class=
"special">)
</span><span class=
"special">;
</span>
74 <span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378455-bb"><span class=
"identifier">allocate
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">size_type
</span><span class=
"special">)
</span><span class=
"special">;
</span>
75 <span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378466-bb"><span class=
"identifier">allocate
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">size_type
</span><span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"keyword">void
</span> <span class=
"special">*
</span><span class=
"special">)
</span><span class=
"special">;
</span>
76 <span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378485-bb"><span class=
"identifier">allocate
</span></a><span class=
"special">(
</span><span class=
"special">)
</span><span class=
"special">;
</span>
77 <span class=
"keyword">static
</span> <span class=
"keyword">void
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378495-bb"><span class=
"identifier">deallocate
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span><span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">size_type
</span><span class=
"special">)
</span><span class=
"special">;
</span>
78 <span class=
"keyword">static
</span> <span class=
"keyword">void
</span> <a class=
"link" href=
"fast_pool_allocator.html#id378514-bb"><span class=
"identifier">deallocate
</span></a><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span><span class=
"special">)
</span><span class=
"special">;
</span>
80 <span class=
"comment">// public data members
</span>
81 <span class=
"keyword">static
</span> <span class=
"keyword">const
</span> <span class=
"keyword">unsigned
</span> <span class=
"identifier">next_size
</span><span class=
"special">;
</span>
82 <span class=
"special">}
</span><span class=
"special">;
</span></pre></div>
83 <div class=
"refsect1">
84 <a name=
"id937146"></a><h2>Description
</h2>
85 <p>While class template
<code class=
"computeroutput"><a class=
"link" href=
"pool_allocator.html" title=
"Class template pool_allocator">pool_allocator
</a></code> is a more general-purpose solution geared towards efficiently servicing requests for any number of contiguous chunks,
<code class=
"computeroutput"><a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a></code> is also a general-purpose solution, but is geared towards efficiently servicing requests for one chunk at a time; it will work for contiguous chunks, but not as well as
<code class=
"computeroutput"><a class=
"link" href=
"pool_allocator.html" title=
"Class template pool_allocator">pool_allocator
</a></code>.
</p>
86 <p>If you are seriously concerned about performance, use
<code class=
"computeroutput"><a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a></code> when dealing with containers such as
<code class=
"computeroutput">std::list
</code>, and use
<code class=
"computeroutput"><a class=
"link" href=
"pool_allocator.html" title=
"Class template pool_allocator">pool_allocator
</a></code> when dealing with containers such as
<code class=
"computeroutput">std::vector
</code>.
</p>
87 <p>The template parameters are defined as follows:
</p>
88 <p><span class=
"bold"><strong>T
</strong></span> Type of object to allocate/deallocate.
</p>
89 <p><span class=
"bold"><strong>UserAllocator
</strong></span>. Defines the method that the underlying Pool will use to allocate memory from the system. See
<a href=
"../boost_pool/pool/pooling.html#boost_pool.pool.pooling.user_allocator" target=
"_top">User Allocators
</a> for details.
</p>
90 <p><span class=
"bold"><strong>Mutex
</strong></span> Allows the user to determine the type of synchronization to be used on the underlying
<code class=
"computeroutput"><a class=
"link" href=
"singleton_pool.html" title=
"Class template singleton_pool">singleton_pool
</a></code>.
</p>
91 <p><span class=
"bold"><strong>NextSize
</strong></span> The value of this parameter is passed to the underlying Pool when it is created.
</p>
92 <p><span class=
"bold"><strong>MaxSize
</strong></span> Limit on the maximum size used.
</p>
93 <div class=
"note"><table border=
"0" summary=
"Note">
95 <td rowspan=
"2" align=
"center" valign=
"top" width=
"25"><img alt=
"[Note]" src=
"../../../../../doc/src/images/note.png"></td>
96 <th align=
"left">Note
</th>
98 <tr><td align=
"left" valign=
"top"><p>The underlying
<a class=
"link" href=
"singleton_pool.html" title=
"Class template singleton_pool">singleton_pool
</a> used by the this allocator constructs a pool instance that
<span class=
"bold"><strong>is never freed
</strong></span>. This means that memory allocated by the allocator can be still used after main() has completed, but may mean that some memory checking programs will complain about leaks.
</p></td></tr>
102 <div class=
"refsect2">
103 <a name=
"id937261"></a><h3>
104 <a name=
"boost.fast_pool_allocatorconstruct-copy-destruct"></a><code class=
"computeroutput">fast_pool_allocator
</code>
106 construct/copy/destruct
</h3>
107 <div class=
"orderedlist"><ol class=
"orderedlist" type=
"1">
108 <li class=
"listitem">
109 <pre class=
"literallayout"><a name=
"id378382-bb"></a><span class=
"identifier">fast_pool_allocator
</span><span class=
"special">(
</span><span class=
"special">)
</span><span class=
"special">;
</span></pre>
110 <p>Ensures construction of the underlying
<code class=
"computeroutput"><a class=
"link" href=
"singleton_pool.html" title=
"Class template singleton_pool">singleton_pool
</a></code> IFF an instance of this allocator is constructed during global initialization. See ticket #
2359 for a complete explanation at
<a href=
"http://svn.boost.org/trac/boost/ticket/2359" target=
"_top">http://svn.boost.org/trac/boost/ticket/
2359</a> .
</p>
112 <li class=
"listitem">
113 <pre class=
"literallayout"><span class=
"keyword">template
</span><span class=
"special"><</span><span class=
"keyword">typename
</span> U
<span class=
"special">></span>
114 <a name=
"id378396-bb"></a><span class=
"identifier">fast_pool_allocator
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a><span class=
"special"><</span> <span class=
"identifier">U
</span><span class=
"special">,
</span> <span class=
"identifier">UserAllocator
</span><span class=
"special">,
</span> <span class=
"identifier">Mutex
</span><span class=
"special">,
</span> <span class=
"identifier">NextSize
</span><span class=
"special">,
</span> <span class=
"identifier">MaxSize
</span> <span class=
"special">></span> <span class=
"special">&</span><span class=
"special">)
</span><span class=
"special">;
</span></pre>
115 <p>Ensures construction of the underlying
<code class=
"computeroutput"><a class=
"link" href=
"singleton_pool.html" title=
"Class template singleton_pool">singleton_pool
</a></code> IFF an instance of this allocator is constructed during global initialization. See ticket #
2359 for a complete explanation at
<a href=
"http://svn.boost.org/trac/boost/ticket/2359" target=
"_top">http://svn.boost.org/trac/boost/ticket/
2359</a> .
</p>
119 <div class=
"refsect2">
120 <a name=
"id937425"></a><h3>
121 <a name=
"id378321-bb"></a><code class=
"computeroutput">fast_pool_allocator
</code> public member functions
</h3>
122 <div class=
"orderedlist"><ol class=
"orderedlist" type=
"1">
123 <li class=
"listitem"><pre class=
"literallayout"><span class=
"keyword">void
</span> <a name=
"id378323-bb"></a><span class=
"identifier">construct
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span> ptr
<span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">value_type
</span> <span class=
"special">&</span> t
<span class=
"special">)
</span><span class=
"special">;
</span></pre></li>
124 <li class=
"listitem">
125 <pre class=
"literallayout"><span class=
"keyword">void
</span> <a name=
"id378339-bb"></a><span class=
"identifier">destroy
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span> ptr
<span class=
"special">)
</span><span class=
"special">;
</span></pre>
126 <p>Destroy ptr using destructor.
</p>
128 <li class=
"listitem"><pre class=
"literallayout"><span class=
"keyword">bool
</span> <a name=
"id378353-bb"></a><span class=
"keyword">operator
</span><span class=
"special">==
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a> <span class=
"special">&</span><span class=
"special">)
</span> <span class=
"keyword">const
</span><span class=
"special">;
</span></pre></li>
129 <li class=
"listitem"><pre class=
"literallayout"><span class=
"keyword">bool
</span> <a name=
"id378368-bb"></a><span class=
"keyword">operator
</span><span class=
"special">!=
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <a class=
"link" href=
"fast_pool_allocator.html" title=
"Class template fast_pool_allocator">fast_pool_allocator
</a> <span class=
"special">&</span><span class=
"special">)
</span> <span class=
"keyword">const
</span><span class=
"special">;
</span></pre></li>
132 <div class=
"refsect2">
133 <a name=
"id937633"></a><h3>
134 <a name=
"id378425-bb"></a><code class=
"computeroutput">fast_pool_allocator
</code> public static functions
</h3>
135 <div class=
"orderedlist"><ol class=
"orderedlist" type=
"1">
136 <li class=
"listitem"><pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a name=
"id378428-bb"></a><span class=
"identifier">address
</span><span class=
"special">(
</span><span class=
"identifier">reference
</span> r
<span class=
"special">)
</span><span class=
"special">;
</span></pre></li>
137 <li class=
"listitem"><pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"identifier">const_pointer
</span> <a name=
"id378438-bb"></a><span class=
"identifier">address
</span><span class=
"special">(
</span><span class=
"identifier">const_reference
</span> s
<span class=
"special">)
</span><span class=
"special">;
</span></pre></li>
138 <li class=
"listitem"><pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"identifier">size_type
</span> <a name=
"id378449-bb"></a><span class=
"identifier">max_size
</span><span class=
"special">(
</span><span class=
"special">)
</span><span class=
"special">;
</span></pre></li>
139 <li class=
"listitem"><pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a name=
"id378455-bb"></a><span class=
"identifier">allocate
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">size_type
</span> n
<span class=
"special">)
</span><span class=
"special">;
</span></pre></li>
140 <li class=
"listitem">
141 <pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a name=
"id378466-bb"></a><span class=
"identifier">allocate
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">size_type
</span> n
<span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"keyword">void
</span> <span class=
"special">*
</span> const
<span class=
"special">)
</span><span class=
"special">;
</span></pre>
142 <p>Allocate memory .
</p>
144 <li class=
"listitem">
145 <pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"identifier">pointer
</span> <a name=
"id378485-bb"></a><span class=
"identifier">allocate
</span><span class=
"special">(
</span><span class=
"special">)
</span><span class=
"special">;
</span></pre>
146 <p>Allocate memory.
</p>
148 <li class=
"listitem">
149 <pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"keyword">void
</span> <a name=
"id378495-bb"></a><span class=
"identifier">deallocate
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span> ptr
<span class=
"special">,
</span> <span class=
"keyword">const
</span> <span class=
"identifier">size_type
</span> n
<span class=
"special">)
</span><span class=
"special">;
</span></pre>
150 <p>Deallocate memory.
</p>
152 <li class=
"listitem">
153 <pre class=
"literallayout"><span class=
"keyword">static
</span> <span class=
"keyword">void
</span> <a name=
"id378514-bb"></a><span class=
"identifier">deallocate
</span><span class=
"special">(
</span><span class=
"keyword">const
</span> <span class=
"identifier">pointer
</span> ptr
<span class=
"special">)
</span><span class=
"special">;
</span></pre>
154 <p>deallocate/free
</p>
158 <div class=
"refsect2">
159 <a name=
"id938145"></a><h3>Specializations
</h3>
160 <div class=
"itemizedlist"><ul class=
"itemizedlist" type=
"disc"><li class=
"listitem"><p><a class=
"link" href=
"fast_pool_allocator_void__UserAllocat_id378528.html" title=
"Class template fast_pool_allocator<void, UserAllocator, Mutex, NextSize, MaxSize>">Class template fast_pool_allocator
<void, UserAllocator, Mutex, NextSize, MaxSize
></a></p></li></ul></div>
164 <table xmlns:
rev=
"http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width=
"100%"><tr>
165 <td align=
"left"></td>
166 <td align=
"right"><div class=
"copyright-footer">Copyright
© 2000-
2006 Stephen Cleary
<br>Copyright
© 2011 Paul A. Bristow
<p>
167 Distributed under the Boost Software License, Version
1.0. (See accompanying
168 file LICENSE_1_0.txt or copy at
<a href=
"http://www.boost.org/LICENSE_1_0.txt" target=
"_top">http://www.boost.org/LICENSE_1_0.txt
</a>)
173 <div class=
"spirit-nav">
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