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<title>HTML Tidy: _TidyAllocator Struct Reference</title>
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<h1>_TidyAllocator Struct Reference<br/>
<small>
[<a class="el" href="group__Memory.html">Memory Allocation</a>]</small>
</h1><!-- doxytag: class="_TidyAllocator" -->
<p><code>#include <<a class="el" href="tidy_8h_source.html">tidy.h</a>></code></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2113f1c06a3cfe4cbdf9212a47e6938b"></a><!-- doxytag: member="_TidyAllocator::vtbl" ref="a2113f1c06a3cfe4cbdf9212a47e6938b" args="" -->
const <a class="el" href="struct__TidyAllocatorVtbl.html">TidyAllocatorVtbl</a> * </td><td class="memItemRight" valign="bottom"><b>vtbl</b></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>An allocator. To create your own allocator, do something like the following:</p>
<p>typedef struct _MyAllocator { TidyAllocator base; ...other custom allocator state... } MyAllocator;</p>
<p>void* MyAllocator_alloc(TidyAllocator *base, void *block, size_t nBytes) { MyAllocator *self = (MyAllocator*)base; ... } (etc)</p>
<p>static const TidyAllocatorVtbl MyAllocatorVtbl = { MyAllocator_alloc, MyAllocator_realloc, MyAllocator_free, MyAllocator_panic };</p>
<p>myAllocator allocator; <a class="el" href="structTidyDoc.html">TidyDoc</a> doc;</p>
<p>allocator.base.vtbl = &MyAllocatorVtbl; ...initialise allocator specific state... doc = tidyCreateWithAllocator(&allocator); ...</p>
<p>Although this looks slightly long winded, the advantage is that to create a custom allocator you simply need to set the vtbl pointer correctly. The vtbl itself can reside in static/global data, and hence does not need to be initialised each time an allocator is created, and furthermore the memory is shared amongst all created allocators. </p>
<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="tidy_8h_source.html">tidy.h</a></li>
</ul>
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.1 </small></address>
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