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  26 <div class="refentry">
  27 <a name="boost.interprocess.private_node_allocator"></a><div class="titlepage"></div>
  28 <div class="refnamediv">
  29 <h2><span class="refentrytitle">Class template private_node_allocator</span></h2>
  30 <p>boost::interprocess::private_node_allocator</p>
  31 </div>
  32 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  33 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../interprocess/indexes_reference.html#header.boost.interprocess.allocators.private_node_allocator_hpp" title="Header &lt;boost/interprocess/allocators/private_node_allocator.hpp&gt;">boost/interprocess/allocators/private_node_allocator.hpp</a>&gt;
  34
  35 </span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> SegmentManager<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> NodesPerBlock<span class="special">&gt;</span>
  36 <span class="keyword">class</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_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">implementation_defined</span><span class="special">::</span><span class="identifier">segment_manager</span> <a name="boost.interprocess.private_node_allocator.segment_manager"></a><span class="identifier">segment_manager</span><span class="special">;</span>
  40   <span class="keyword">typedef</span> <span class="identifier">segment_manager</span><span class="special">::</span><span class="identifier">void_pointer</span>           <a name="boost.interprocess.private_node_allocator.void_pointer"></a><span class="identifier">void_pointer</span><span class="special">;</span>
  41   <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">pointer</span>         <a name="boost.interprocess.private_node_allocator.pointer"></a><span class="identifier">pointer</span><span class="special">;</span>
  42   <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">const_pointer</span>   <a name="boost.interprocess.private_node_allocator.const_pointer"></a><span class="identifier">const_pointer</span><span class="special">;</span>
  43   <span class="keyword">typedef</span> <span class="identifier">T</span>                                       <a name="boost.interprocess.private_node_allocator.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>
  44   <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span>                             <a name="boost.interprocess.private_node_allocator.reference"></a><span class="identifier">reference</span><span class="special">;</span>
  45   <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span>                             <a name="boost.interprocess.private_node_allocator.const_reference"></a><span class="identifier">const_reference</span><span class="special">;</span>
  46   <span class="keyword">typedef</span> <span class="identifier">segment_manager</span><span class="special">::</span><span class="identifier">size_type</span>              <a name="boost.interprocess.private_node_allocator.size_type"></a><span class="identifier">size_type</span><span class="special">;</span>
  47   <span class="keyword">typedef</span> <span class="identifier">segment_manage</span><span class="special">::</span><span class="identifier">difference_type</span>         <a name="boost.interprocess.private_node_allocator.difference_type"></a><span class="identifier">difference_type</span><span class="special">;</span>
  48
  49   <span class="comment">// member classes/structs/unions</span>
  50   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T2<span class="special">&gt;</span>
  51   <span class="keyword">struct</span> <a class="link" href="private_node_allocator/rebind.html" title="Struct template rebind">rebind</a> <span class="special">{</span>
  52     <span class="comment">// types</span>
  53     <span class="keyword">typedef</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a><span class="special">&lt;</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager</span><span class="special">,</span> <span class="identifier">NodesPerBlock</span> <span class="special">&gt;</span> <a class="link" href="private_node_allocator/rebind.html#boost.interprocess.private_node_allocator.rebind.other"><span class="identifier">other</span></a><span class="special">;</span>
  54   <span class="special">}</span><span class="special">;</span>
  55
  56   <span class="comment">// <a class="link" href="private_node_allocator.html#boost.interprocess.private_node_allocatorconstruct-copy-destruct">construct/copy/destruct</a></span>
  57   <a class="link" href="private_node_allocator.html#idm45336642396032-bb"><span class="identifier">private_node_allocator</span></a><span class="special">(</span><span class="identifier">segment_manager</span> <span class="special">*</span><span class="special">)</span><span class="special">;</span>
  58   <a class="link" href="private_node_allocator.html#idm45336642393760-bb"><span class="identifier">private_node_allocator</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  59   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T2<span class="special">&gt;</span>
  60     <a class="link" href="private_node_allocator.html#idm45336642391088-bb"><span class="identifier">private_node_allocator</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a><span class="special">&lt;</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager</span><span class="special">,</span> <span class="identifier">NodesPerBlock</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  61   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T2<span class="special">,</span> <span class="keyword">typename</span> SegmentManager2<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> N2<span class="special">&gt;</span>
  62     <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span>
  63     <a class="link" href="private_node_allocator.html#idm45336642451840-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a><span class="special">&lt;</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager2</span><span class="special">,</span> <span class="identifier">N2</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  64   <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span> <a class="link" href="private_node_allocator.html#idm45336642446384-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  65   <a class="link" href="private_node_allocator.html#idm45336642386768-bb"><span class="special">~</span><span class="identifier">private_node_allocator</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  66
  67   <span class="comment">// <a class="link" href="private_node_allocator.html#idm45336642443200-bb">public member functions</a></span>
  68   <span class="identifier">node_pool_t</span> <span class="special">*</span> <a class="link" href="private_node_allocator.html#idm45336642442640-bb"><span class="identifier">get_node_pool</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  69   <span class="identifier">segment_manager</span> <span class="special">*</span> <a class="link" href="private_node_allocator.html#idm45336642441072-bb"><span class="identifier">get_segment_manager</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  70   <span class="identifier">size_type</span> <a class="link" href="private_node_allocator.html#idm45336642439504-bb"><span class="identifier">max_size</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  71   <span class="identifier">pointer</span> <a class="link" href="private_node_allocator.html#idm45336642437920-bb"><span class="identifier">allocate</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">cvoid_pointer</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
  72   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642434192-bb"><span class="identifier">deallocate</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">size_type</span><span class="special">)</span><span class="special">;</span>
  73   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642431520-bb"><span class="identifier">deallocate_free_blocks</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  74   <span class="identifier">pointer</span> <a class="link" href="private_node_allocator.html#idm45336642430224-bb"><span class="identifier">address</span></a><span class="special">(</span><span class="identifier">reference</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  75   <span class="identifier">const_pointer</span> <a class="link" href="private_node_allocator.html#idm45336642427968-bb"><span class="identifier">address</span></a><span class="special">(</span><span class="identifier">const_reference</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  76   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642425712-bb"><span class="identifier">construct</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">const_reference</span><span class="special">)</span><span class="special">;</span>
  77   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642423024-bb"><span class="identifier">destroy</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  78   <span class="identifier">size_type</span> <a class="link" href="private_node_allocator.html#idm45336642421040-bb"><span class="identifier">size</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  79   <span class="identifier">pointer</span> <a class="link" href="private_node_allocator.html#idm45336642418640-bb"><span class="identifier">allocation_command</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">interprocess</span><span class="special">::</span><span class="identifier">allocation_type</span><span class="special">,</span> <span class="identifier">size_type</span><span class="special">,</span>
  80                              <span class="identifier">size_type</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">pointer</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  81   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642415008-bb"><span class="identifier">allocate_many</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  82   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642411376-bb"><span class="identifier">allocate_many</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> <span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  83   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642407936-bb"><span class="identifier">deallocate_many</span></a><span class="special">(</span><span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  84   <span class="identifier">pointer</span> <a class="link" href="private_node_allocator.html#idm45336642405680-bb"><span class="identifier">allocate_one</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  85   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642403552-bb"><span class="identifier">allocate_individual</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">,</span> <span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  86   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642400592-bb"><span class="identifier">deallocate_one</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  87   <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642398464-bb"><span class="identifier">deallocate_individual</span></a><span class="special">(</span><span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  88
  89   <span class="comment">// <a class="link" href="private_node_allocator.html#idm45336642385984-bb">friend functions</a></span>
  90   <span class="keyword">friend</span> <span class="keyword">void</span> <a class="link" href="private_node_allocator.html#idm45336642385424-bb"><span class="identifier">swap</span></a><span class="special">(</span><span class="identifier">self_t</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">self_t</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  91 <span class="special">}</span><span class="special">;</span></pre></div>
  92 <div class="refsect1">
  93 <a name="id-1.3.19.17.3.8.4.4"></a><h2>Description</h2>
  94 <p>An STL node allocator that uses a segment manager as memory source. The internal pointer type will of the same type (raw, smart) as "typename SegmentManager::void_pointer" type. This allows placing the allocator in shared memory, memory mapped-files, etc... This allocator has its own node pool. NodesPerBlock is the number of nodes allocated at once when the allocator needs runs out of nodes </p>
  95 <div class="refsect2">
  96 <a name="id-1.3.19.17.3.8.4.4.3"></a><h3>
  97 <a name="boost.interprocess.private_node_allocatorconstruct-copy-destruct"></a><code class="computeroutput">private_node_allocator</code>
  98         public
  99        construct/copy/destruct</h3>
 100 <div class="orderedlist"><ol class="orderedlist" type="1">
 101 <li class="listitem">
 102 <pre class="literallayout"><a name="idm45336642396032-bb"></a><span class="identifier">private_node_allocator</span><span class="special">(</span><span class="identifier">segment_manager</span> <span class="special">*</span> segment_mngr<span class="special">)</span><span class="special">;</span></pre>
 103 <p>Constructor from a segment manager. If not present, constructs a node pool. Increments the reference count of the associated node pool. Can throw <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> </p>
 104 </li>
 105 <li class="listitem">
 106 <pre class="literallayout"><a name="idm45336642393760-bb"></a><span class="identifier">private_node_allocator</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span> other<span class="special">)</span><span class="special">;</span></pre>
 107 <p>Copy constructor from other <code class="computeroutput"><a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a></code>. Increments the reference count of the associated node pool. Never throws </p>
 108 </li>
 109 <li class="listitem">
 110 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T2<span class="special">&gt;</span>
 111   <a name="idm45336642391088-bb"></a><span class="identifier">private_node_allocator</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a><span class="special">&lt;</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager</span><span class="special">,</span> <span class="identifier">NodesPerBlock</span> <span class="special">&gt;</span> <span class="special">&amp;</span> other<span class="special">)</span><span class="special">;</span></pre>
 112 <p>Copy constructor from related <code class="computeroutput"><a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a></code>. If not present, constructs a node pool. Increments the reference count of the associated node pool. Can throw <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> </p>
 113 </li>
 114 <li class="listitem">
 115 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T2<span class="special">,</span> <span class="keyword">typename</span> SegmentManager2<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> N2<span class="special">&gt;</span>
 116   <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span>
 117   <a name="idm45336642451840-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a><span class="special">&lt;</span> <span class="identifier">T2</span><span class="special">,</span> <span class="identifier">SegmentManager2</span><span class="special">,</span> <span class="identifier">N2</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span></pre>
 118 <p>Not assignable from related <code class="computeroutput"><a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a></code> </p>
 119 </li>
 120 <li class="listitem">
 121 <pre class="literallayout"><a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span> <a name="idm45336642446384-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span></pre>
 122 <p>Not assignable from other <code class="computeroutput"><a class="link" href="private_node_allocator.html" title="Class template private_node_allocator">private_node_allocator</a></code> </p>
 123 </li>
 124 <li class="listitem">
 125 <pre class="literallayout"><a name="idm45336642386768-bb"></a><span class="special">~</span><span class="identifier">private_node_allocator</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
 126 <p>Destructor, removes node_pool_t from memory if its reference count reaches to zero. Never throws </p>
 127 </li>
 128 </ol></div>
 129 </div>
 130 <div class="refsect2">
 131 <a name="id-1.3.19.17.3.8.4.4.4"></a><h3>
 132 <a name="idm45336642443200-bb"></a><code class="computeroutput">private_node_allocator</code> public member functions</h3>
 133 <div class="orderedlist"><ol class="orderedlist" type="1">
 134 <li class="listitem">
 135 <pre class="literallayout"><span class="identifier">node_pool_t</span> <span class="special">*</span> <a name="idm45336642442640-bb"></a><span class="identifier">get_node_pool</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 136 <p>Returns a pointer to the node pool. Never throws </p>
 137 </li>
 138 <li class="listitem">
 139 <pre class="literallayout"><span class="identifier">segment_manager</span> <span class="special">*</span> <a name="idm45336642441072-bb"></a><span class="identifier">get_segment_manager</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 140 <p>Returns the segment manager. Never throws </p>
 141 </li>
 142 <li class="listitem">
 143 <pre class="literallayout"><span class="identifier">size_type</span> <a name="idm45336642439504-bb"></a><span class="identifier">max_size</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 144 <p>Returns the number of elements that could be allocated. Never throws </p>
 145 </li>
 146 <li class="listitem">
 147 <pre class="literallayout"><span class="identifier">pointer</span> <a name="idm45336642437920-bb"></a><span class="identifier">allocate</span><span class="special">(</span><span class="identifier">size_type</span> count<span class="special">,</span> <span class="identifier">cvoid_pointer</span> hint <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>
 148 <p>Allocate memory for an array of count elements. Throws <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> if there is no enough memory </p>
 149 </li>
 150 <li class="listitem">
 151 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642434192-bb"></a><span class="identifier">deallocate</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span> ptr<span class="special">,</span> <span class="identifier">size_type</span> count<span class="special">)</span><span class="special">;</span></pre>
 152 <p>Deallocate allocated memory. Never throws </p>
 153 </li>
 154 <li class="listitem">
 155 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642431520-bb"></a><span class="identifier">deallocate_free_blocks</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
 156 <p>Deallocates all free blocks of the pool </p>
 157 </li>
 158 <li class="listitem">
 159 <pre class="literallayout"><span class="identifier">pointer</span> <a name="idm45336642430224-bb"></a><span class="identifier">address</span><span class="special">(</span><span class="identifier">reference</span> value<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 160 <p>Returns address of mutable object. Never throws </p>
 161 </li>
 162 <li class="listitem">
 163 <pre class="literallayout"><span class="identifier">const_pointer</span> <a name="idm45336642427968-bb"></a><span class="identifier">address</span><span class="special">(</span><span class="identifier">const_reference</span> value<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 164 <p>Returns address of non mutable object. Never throws </p>
 165 </li>
 166 <li class="listitem">
 167 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642425712-bb"></a><span class="identifier">construct</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span> ptr<span class="special">,</span> <span class="identifier">const_reference</span> v<span class="special">)</span><span class="special">;</span></pre>
 168 <p>Copy construct an object. Throws if T's copy constructor throws </p>
 169 </li>
 170 <li class="listitem">
 171 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642423024-bb"></a><span class="identifier">destroy</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span> ptr<span class="special">)</span><span class="special">;</span></pre>
 172 <p>Destroys object. Throws if object's destructor throws </p>
 173 </li>
 174 <li class="listitem">
 175 <pre class="literallayout"><span class="identifier">size_type</span> <a name="idm45336642421040-bb"></a><span class="identifier">size</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span> p<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 176 <p>Returns maximum the number of objects the previously allocated memory pointed by p can hold. This size only works for memory allocated with allocate, allocation_command and allocate_many. </p>
 177 </li>
 178 <li class="listitem"><pre class="literallayout"><span class="identifier">pointer</span> <a name="idm45336642418640-bb"></a><span class="identifier">allocation_command</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">interprocess</span><span class="special">::</span><span class="identifier">allocation_type</span> command<span class="special">,</span>
 179                            <span class="identifier">size_type</span> limit_size<span class="special">,</span>
 180                            <span class="identifier">size_type</span> <span class="special">&amp;</span> prefer_in_recvd_out_size<span class="special">,</span>
 181                            <span class="identifier">pointer</span> <span class="special">&amp;</span> reuse<span class="special">)</span><span class="special">;</span></pre></li>
 182 <li class="listitem">
 183 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642415008-bb"></a><span class="identifier">allocate_many</span><span class="special">(</span><span class="identifier">size_type</span> elem_size<span class="special">,</span> <span class="identifier">size_type</span> num_elements<span class="special">,</span>
 184                    <span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span> chain<span class="special">)</span><span class="special">;</span></pre>
 185 <p>Allocates many elements of size elem_size in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. The elements must be deallocated with deallocate(...) </p>
 186 </li>
 187 <li class="listitem">
 188 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642411376-bb"></a><span class="identifier">allocate_many</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">size_type</span> <span class="special">*</span> elem_sizes<span class="special">,</span> <span class="identifier">size_type</span> n_elements<span class="special">,</span>
 189                    <span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span> chain<span class="special">)</span><span class="special">;</span></pre>
 190 <p>Allocates n_elements elements, each one of size elem_sizes[i]in a contiguous block of memory. The elements must be deallocated </p>
 191 </li>
 192 <li class="listitem">
 193 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642407936-bb"></a><span class="identifier">deallocate_many</span><span class="special">(</span><span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span> chain<span class="special">)</span><span class="special">;</span></pre>
 194 <p>Allocates many elements of size elem_size in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. The elements must be deallocated with deallocate(...) </p>
 195 </li>
 196 <li class="listitem">
 197 <pre class="literallayout"><span class="identifier">pointer</span> <a name="idm45336642405680-bb"></a><span class="identifier">allocate_one</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
 198 <p>Allocates just one object. Memory allocated with this function must be deallocated only with deallocate_one(). Throws <code class="computeroutput"><a class="link" href="bad_alloc.html" title="Class bad_alloc">boost::interprocess::bad_alloc</a></code> if there is no enough memory </p>
 199 </li>
 200 <li class="listitem">
 201 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642403552-bb"></a><span class="identifier">allocate_individual</span><span class="special">(</span><span class="identifier">size_type</span> num_elements<span class="special">,</span>
 202                          <span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span> chain<span class="special">)</span><span class="special">;</span></pre>
 203 <p>Allocates many elements of size == 1 in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. Memory allocated with this function must be deallocated only with deallocate_one(). </p>
 204 </li>
 205 <li class="listitem">
 206 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642400592-bb"></a><span class="identifier">deallocate_one</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">pointer</span> <span class="special">&amp;</span> p<span class="special">)</span><span class="special">;</span></pre>
 207 <p>Deallocates memory previously allocated with allocate_one(). You should never use deallocate_one to deallocate memory allocated with other functions different from allocate_one(). Never throws </p>
 208 </li>
 209 <li class="listitem">
 210 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45336642398464-bb"></a><span class="identifier">deallocate_individual</span><span class="special">(</span><span class="identifier">multiallocation_chain</span> <span class="special">&amp;</span> chain<span class="special">)</span><span class="special">;</span></pre>
 211 <p>Allocates many elements of size == 1 in a contiguous block of memory. The minimum number to be allocated is min_elements, the preferred and maximum number is preferred_elements. The number of actually allocated elements is will be assigned to received_size. Memory allocated with this function must be deallocated only with deallocate_one(). </p>
 212 </li>
 213 </ol></div>
 214 </div>
 215 <div class="refsect2">
 216 <a name="id-1.3.19.17.3.8.4.4.5"></a><h3>
 217 <a name="idm45336642385984-bb"></a><code class="computeroutput">private_node_allocator</code> friend functions</h3>
 218 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
 219 <pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">void</span> <a name="idm45336642385424-bb"></a><span class="identifier">swap</span><span class="special">(</span><span class="identifier">self_t</span> <span class="special">&amp;</span> alloc1<span class="special">,</span> <span class="identifier">self_t</span> <span class="special">&amp;</span> alloc2<span class="special">)</span><span class="special">;</span></pre>
 220 <p>Swaps allocators. Does not throw. If each allocator is placed in a different memory segment, the result is undefined. </p>
 221 </li></ol></div>
 222 </div>
 223 </div>
 224 </div>
 225 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 226 <td align="left"></td>
 227 <td align="right"><div class="copyright-footer">Copyright &#169; 2005-2015 Ion Gaztanaga<p>
 228         Distributed under the Boost Software License, Version 1.0. (See accompanying
 229         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>)
 230       </p>
 231 </div></td>
 232 </tr></table>
 233 <hr>
 234 <div class="spirit-nav">
 235 <a accesskey="p" href="operator_idm45336642479200.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../interprocess/indexes_reference.html#header.boost.interprocess.allocators.private_node_allocator_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="private_node_allocator/rebind.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a>
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