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<a href="#pub-methods">Public Member Functions</a> </div>
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<div class="title">MMappedFile Class Reference</div> </div>
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<p><a class="el" href="classarm__compute_1_1_memory.xhtml" title="CPU implementation of memory object.">Memory</a> mapped file class.
<a href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="_m_mapped_file_8h_source.xhtml">MMappedFile.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a5d9066a6c3a402044fcc0e5a25c09aa0"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a5d9066a6c3a402044fcc0e5a25c09aa0">MMappedFile</a> ()</td></tr>
<tr class="memdesc:a5d9066a6c3a402044fcc0e5a25c09aa0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="#a5d9066a6c3a402044fcc0e5a25c09aa0">More...</a><br /></td></tr>
<tr class="separator:a5d9066a6c3a402044fcc0e5a25c09aa0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3616a9b4f59739152c904d57117eb3a5"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a3616a9b4f59739152c904d57117eb3a5">MMappedFile</a> (std::string filename, size_t size, size_t <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>)</td></tr>
<tr class="memdesc:a3616a9b4f59739152c904d57117eb3a5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <a href="#a3616a9b4f59739152c904d57117eb3a5">More...</a><br /></td></tr>
<tr class="separator:a3616a9b4f59739152c904d57117eb3a5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6dcb9ad4d9d3220e157846dbd80383e8"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a6dcb9ad4d9d3220e157846dbd80383e8">MMappedFile</a> (const <a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;)=delete</td></tr>
<tr class="memdesc:a6dcb9ad4d9d3220e157846dbd80383e8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Prevent instances of this class from being copied (As this class contains pointers) <a href="#a6dcb9ad4d9d3220e157846dbd80383e8">More...</a><br /></td></tr>
<tr class="separator:a6dcb9ad4d9d3220e157846dbd80383e8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7e00f03be4604efcbd29a3d015f9411b"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a7e00f03be4604efcbd29a3d015f9411b">MMappedFile</a> (<a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&amp;)=default</td></tr>
<tr class="memdesc:a7e00f03be4604efcbd29a3d015f9411b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default move constructor. <a href="#a7e00f03be4604efcbd29a3d015f9411b">More...</a><br /></td></tr>
<tr class="separator:a7e00f03be4604efcbd29a3d015f9411b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acd31bde3cb55f37c67f0564b099c24d6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#acd31bde3cb55f37c67f0564b099c24d6">operator=</a> (const <a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;)=delete</td></tr>
<tr class="memdesc:acd31bde3cb55f37c67f0564b099c24d6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Prevent instances of this class from being copied (As this class contains pointers) <a href="#acd31bde3cb55f37c67f0564b099c24d6">More...</a><br /></td></tr>
<tr class="separator:acd31bde3cb55f37c67f0564b099c24d6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a67963eff4b87734fed49c4f2e358575d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a67963eff4b87734fed49c4f2e358575d">operator=</a> (<a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&amp;)=default</td></tr>
<tr class="memdesc:a67963eff4b87734fed49c4f2e358575d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default move assignment operator. <a href="#a67963eff4b87734fed49c4f2e358575d">More...</a><br /></td></tr>
<tr class="separator:a67963eff4b87734fed49c4f2e358575d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae24171f52905cbf7fc249879e53f8336"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#ae24171f52905cbf7fc249879e53f8336">~MMappedFile</a> ()</td></tr>
<tr class="memdesc:ae24171f52905cbf7fc249879e53f8336"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <a href="#ae24171f52905cbf7fc249879e53f8336">More...</a><br /></td></tr>
<tr class="separator:ae24171f52905cbf7fc249879e53f8336"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8ad5bb96c065859f580e900c756f6af4"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a8ad5bb96c065859f580e900c756f6af4">map</a> (const std::string &amp;filename, size_t size, size_t <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>)</td></tr>
<tr class="memdesc:a8ad5bb96c065859f580e900c756f6af4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Opens and maps a file. <a href="#a8ad5bb96c065859f580e900c756f6af4">More...</a><br /></td></tr>
<tr class="separator:a8ad5bb96c065859f580e900c756f6af4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a23b477d0e2d399f75d585d154c346591"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a23b477d0e2d399f75d585d154c346591">release</a> ()</td></tr>
<tr class="memdesc:a23b477d0e2d399f75d585d154c346591"><td class="mdescLeft">&#160;</td><td class="mdescRight">Unmaps and closes file. <a href="#a23b477d0e2d399f75d585d154c346591">More...</a><br /></td></tr>
<tr class="separator:a23b477d0e2d399f75d585d154c346591"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3884d6c46a68636a526bdfd8ab131895"><td class="memItemLeft" align="right" valign="top">unsigned char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a3884d6c46a68636a526bdfd8ab131895">data</a> ()</td></tr>
<tr class="memdesc:a3884d6c46a68636a526bdfd8ab131895"><td class="mdescLeft">&#160;</td><td class="mdescRight">Mapped data accessor. <a href="#a3884d6c46a68636a526bdfd8ab131895">More...</a><br /></td></tr>
<tr class="separator:a3884d6c46a68636a526bdfd8ab131895"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a93276b635c9162e0716a14133af8cd2f"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a93276b635c9162e0716a14133af8cd2f">file_size</a> () const</td></tr>
<tr class="memdesc:a93276b635c9162e0716a14133af8cd2f"><td class="mdescLeft">&#160;</td><td class="mdescRight">File size accessor. <a href="#a93276b635c9162e0716a14133af8cd2f">More...</a><br /></td></tr>
<tr class="separator:a93276b635c9162e0716a14133af8cd2f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a418ccdae42f326fedc717a8e307bc502"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a418ccdae42f326fedc717a8e307bc502">map_size</a> () const</td></tr>
<tr class="memdesc:a418ccdae42f326fedc717a8e307bc502"><td class="mdescLeft">&#160;</td><td class="mdescRight">Map size accessor. <a href="#a418ccdae42f326fedc717a8e307bc502">More...</a><br /></td></tr>
<tr class="separator:a418ccdae42f326fedc717a8e307bc502"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abc866d28046d8f913929f105d1ff2fdf"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#abc866d28046d8f913929f105d1ff2fdf">is_mapped</a> () const</td></tr>
<tr class="memdesc:abc866d28046d8f913929f105d1ff2fdf"><td class="mdescLeft">&#160;</td><td class="mdescRight">Checks if file mapped. <a href="#abc866d28046d8f913929f105d1ff2fdf">More...</a><br /></td></tr>
<tr class="separator:abc866d28046d8f913929f105d1ff2fdf"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p><a class="el" href="classarm__compute_1_1_memory.xhtml" title="CPU implementation of memory object.">Memory</a> mapped file class. </p>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8h_source.xhtml#l00039">39</a> of file <a class="el" href="_m_mapped_file_8h_source.xhtml">MMappedFile.h</a>.</p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a5d9066a6c3a402044fcc0e5a25c09aa0"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5d9066a6c3a402044fcc0e5a25c09aa0">&#9670;&nbsp;</a></span>MMappedFile() <span class="overload">[1/4]</span></h2>
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<table class="memname">
<tr>
<td class="memname"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
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</div><div class="memdoc">
<p>Constructor. </p>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00076">76</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; : _filename(), _file_size(0), _map_size(0), _map_offset(0), _fp(<span class="keyword">nullptr</span>), _data(<span class="keyword">nullptr</span>)</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;{</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;}</div></div><!-- fragment -->
</div>
</div>
<a id="a3616a9b4f59739152c904d57117eb3a5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3616a9b4f59739152c904d57117eb3a5">&#9670;&nbsp;</a></span>MMappedFile() <span class="overload">[2/4]</span></h2>
<div class="memitem">
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<tr>
<td class="memname"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> </td>
<td>(</td>
<td class="paramtype">std::string&#160;</td>
<td class="paramname"><em>filename</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>size</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>offset</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Constructor. </p>
<dl class="section note"><dt>Note</dt><dd>file will be created if it doesn't exist.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">filename</td><td>File to be mapped, if doesn't exist will be created. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">size</td><td>Size of file to map </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">offset</td><td>Offset to mapping point, should be multiple of page size </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00081">81</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; : _filename(std::move(filename)), _file_size(0), _map_size(size), _map_offset(<a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>), _fp(<span class="keyword">nullptr</span>), _data(<span class="keyword">nullptr</span>)</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;{</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <a class="code" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a8ad5bb96c065859f580e900c756f6af4">map</a>(_filename, _map_size, _map_offset);</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;}</div><div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a></div><div class="ttdeci">__global uchar * offset(const Image *img, int x, int y)</div><div class="ttdoc">Get the pointer position of a Image.</div><div class="ttdef"><b>Definition:</b> <a href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00328">helpers.h:328</a></div></div>
<div class="ttc" id="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file_xhtml_a8ad5bb96c065859f580e900c756f6af4"><div class="ttname"><a href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a8ad5bb96c065859f580e900c756f6af4">arm_compute::utils::mmap_io::MMappedFile::map</a></div><div class="ttdeci">bool map(const std::string &amp;filename, size_t size, size_t offset)</div><div class="ttdoc">Opens and maps a file.</div><div class="ttdef"><b>Definition:</b> <a href="_m_mapped_file_8cpp_source.xhtml#l00092">MMappedFile.cpp:92</a></div></div>
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<p class="reference">References <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00092">MMappedFile::map()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6dcb9ad4d9d3220e157846dbd80383e8">&#9670;&nbsp;</a></span>MMappedFile() <span class="overload">[3/4]</span></h2>
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<td class="memname"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> </td>
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<td class="paramtype">const <a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&#160;</td>
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<p>Prevent instances of this class from being copied (As this class contains pointers) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7e00f03be4604efcbd29a3d015f9411b">&#9670;&nbsp;</a></span>MMappedFile() <span class="overload">[4/4]</span></h2>
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<td class="memname"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> </td>
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<td class="paramtype"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&amp;&#160;</td>
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<p>Default move constructor. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae24171f52905cbf7fc249879e53f8336">&#9670;&nbsp;</a></span>~MMappedFile()</h2>
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<td class="memname">~<a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> </td>
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<p>Destructor. </p>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00087">87</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;{</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <a class="code" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a23b477d0e2d399f75d585d154c346591">release</a>();</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;}</div><div class="ttc" id="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file_xhtml_a23b477d0e2d399f75d585d154c346591"><div class="ttname"><a href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#a23b477d0e2d399f75d585d154c346591">arm_compute::utils::mmap_io::MMappedFile::release</a></div><div class="ttdeci">void release()</div><div class="ttdoc">Unmaps and closes file.</div><div class="ttdef"><b>Definition:</b> <a href="_m_mapped_file_8cpp_source.xhtml#l00148">MMappedFile.cpp:148</a></div></div>
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<p class="reference">References <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00148">MMappedFile::release()</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a3884d6c46a68636a526bdfd8ab131895">&#9670;&nbsp;</a></span>data()</h2>
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<td class="memname">unsigned char * data </td>
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<p>Mapped data accessor. </p>
<dl class="section return"><dt>Returns</dt><dd>Pointer to the mapped data, nullptr if not mapped </dd></dl>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00170">170</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;{</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordflow">return</span> static_cast&lt;unsigned char *&gt;(_data);</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;}</div></div><!-- fragment -->
<p class="reference">Referenced by <a class="el" href="tests_2validation_2_c_l_2_u_n_i_t_2_tensor_allocator_8cpp_source.xhtml#l00174">arm_compute::test::validation::TEST_CASE()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a93276b635c9162e0716a14133af8cd2f">&#9670;&nbsp;</a></span>file_size()</h2>
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<td class="memname">size_t file_size </td>
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<p>File size accessor. </p>
<dl class="section return"><dt>Returns</dt><dd>Size of file </dd></dl>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00175">175</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;{</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keywordflow">return</span> _file_size;</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;}</div></div><!-- fragment -->
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<h2 class="memtitle"><span class="permalink"><a href="#abc866d28046d8f913929f105d1ff2fdf">&#9670;&nbsp;</a></span>is_mapped()</h2>
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<td class="memname">bool is_mapped </td>
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<p>Checks if file mapped. </p>
<dl class="section return"><dt>Returns</dt><dd>True if file is mapped else false </dd></dl>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00185">185</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;{</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keywordflow">return</span> _data != <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;}</div></div><!-- fragment -->
<p class="reference">Referenced by <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00092">MMappedFile::map()</a>, and <a class="el" href="tests_2validation_2_c_l_2_u_n_i_t_2_tensor_allocator_8cpp_source.xhtml#l00174">arm_compute::test::validation::TEST_CASE()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8ad5bb96c065859f580e900c756f6af4">&#9670;&nbsp;</a></span>map()</h2>
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<td class="memname">bool map </td>
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<p>Opens and maps a file. </p>
<dl class="section note"><dt>Note</dt><dd>file will be created if it doesn't exist.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramdir">[in]</td><td class="paramname">filename</td><td>File to be mapped, if doesn't exist will be created. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">size</td><td>Size of file to map. If 0 all the file will be mapped. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">offset</td><td>Offset to mapping point, should be multiple of page size.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>True if operation was successful else false </dd></dl>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00092">92</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;{</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="comment">// Check if file is mapped</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keywordflow">if</span>(<a class="code" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#abc866d28046d8f913929f105d1ff2fdf">is_mapped</a>())</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="comment">// Open file</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; _fp = fopen(filename.c_str(), <span class="stringliteral">&quot;a+be&quot;</span>);</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">if</span>(_fp == <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; {</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; }</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="comment">// Extract file descriptor</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keywordtype">int</span> fd = fileno(_fp);</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordtype">bool</span> status = fd &gt;= 0;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordflow">if</span>(status)</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; {</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="comment">// Get file size</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; std::tie(_file_size, status) = get_file_size(_filename);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keywordflow">if</span>(status)</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; {</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="comment">// Map all file from offset if map size is 0</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; _map_size = (size == 0) ? _file_size : size;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; _map_offset = <a class="code" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="comment">// Check offset mapping</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keywordflow">if</span>((_map_offset &gt; _file_size) || (_map_offset % get_page_size() != 0))</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; {</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; status = <span class="keyword">false</span>;</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; }</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keywordflow">else</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="comment">// Truncate to file size</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keywordflow">if</span>(_map_offset + _map_size &gt; _file_size)</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; {</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; _map_size = _file_size - _map_offset;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; }</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="comment">// Perform mapping</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; _data = ::mmap(<span class="keyword">nullptr</span>, _map_size, PROT_WRITE, MAP_SHARED, fd, _map_offset);</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; }</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; }</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keywordflow">if</span>(!status)</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; {</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; fclose(_fp);</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; }</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordflow">return</span> status;</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;}</div><div class="ttc" id="src_2core_2_c_l_2cl__kernels_2_helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="src_2core_2_c_l_2cl__kernels_2_helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a></div><div class="ttdeci">__global uchar * offset(const Image *img, int x, int y)</div><div class="ttdoc">Get the pointer position of a Image.</div><div class="ttdef"><b>Definition:</b> <a href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00328">helpers.h:328</a></div></div>
<div class="ttc" id="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file_xhtml_abc866d28046d8f913929f105d1ff2fdf"><div class="ttname"><a href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml#abc866d28046d8f913929f105d1ff2fdf">arm_compute::utils::mmap_io::MMappedFile::is_mapped</a></div><div class="ttdeci">bool is_mapped() const</div><div class="ttdoc">Checks if file mapped.</div><div class="ttdef"><b>Definition:</b> <a href="_m_mapped_file_8cpp_source.xhtml#l00185">MMappedFile.cpp:185</a></div></div>
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<p class="reference">References <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00185">MMappedFile::is_mapped()</a>, and <a class="el" href="src_2core_2_c_l_2cl__kernels_2_helpers_8h_source.xhtml#l00328">offset()</a>.</p>
<p class="reference">Referenced by <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00081">MMappedFile::MMappedFile()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a418ccdae42f326fedc717a8e307bc502">&#9670;&nbsp;</a></span>map_size()</h2>
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<td class="memname">size_t map_size </td>
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<p>Map size accessor. </p>
<dl class="section return"><dt>Returns</dt><dd>Mapping size </dd></dl>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00180">180</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;{</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">return</span> _map_size;</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;}</div></div><!-- fragment -->
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<h2 class="memtitle"><span class="permalink"><a href="#acd31bde3cb55f37c67f0564b099c24d6">&#9670;&nbsp;</a></span>operator=() <span class="overload">[1/2]</span></h2>
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<td class="memname"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a>&amp; operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&#160;</td>
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<p>Prevent instances of this class from being copied (As this class contains pointers) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a67963eff4b87734fed49c4f2e358575d">&#9670;&nbsp;</a></span>operator=() <span class="overload">[2/2]</span></h2>
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<td class="memname"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a>&amp; operator= </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classarm__compute_1_1utils_1_1mmap__io_1_1_m_mapped_file.xhtml">MMappedFile</a> &amp;&amp;&#160;</td>
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<p>Default move assignment operator. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a23b477d0e2d399f75d585d154c346591">&#9670;&nbsp;</a></span>release()</h2>
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<td class="memname">void release </td>
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<p>Unmaps and closes file. </p>
<p class="definition">Definition at line <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00148">148</a> of file <a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a>.</p>
<div class="fragment"><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;{</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="comment">// Unmap file</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keywordflow">if</span>(_data != <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; {</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; ::munmap(_data, _file_size);</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; _data = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; }</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="comment">// Close file</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">if</span>(_fp != <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; {</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; fclose(_fp);</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; _fp = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; }</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <span class="comment">// Clear variables</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; _file_size = 0;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; _map_size = 0;</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; _map_offset = 0;</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;}</div></div><!-- fragment -->
<p class="reference">Referenced by <a class="el" href="_m_mapped_file_8cpp_source.xhtml#l00087">MMappedFile::~MMappedFile()</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li>arm_compute/core/utils/misc/<a class="el" href="_m_mapped_file_8h_source.xhtml">MMappedFile.h</a></li>
<li>src/core/utils/misc/<a class="el" href="_m_mapped_file_8cpp_source.xhtml">MMappedFile.cpp</a></li>
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<li class="footer">Generated on Mon Sep 2 2019 11:47:42 for Compute Library by
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