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<div class="title">MEMUtils.cpp</div> </div>
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<a href="_m_e_m_utils_8cpp.xhtml">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Copyright (c) 2018 ARM Limited.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * SPDX-License-Identifier: MIT</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * of this software and associated documentation files (the &quot;Software&quot;), to</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * deal in the Software without restriction, including without limitation the</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment"> * SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_c_p_p_types_8h.xhtml">arm_compute/core/CPP/CPPTypes.h</a>&quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_error_8h.xhtml">arm_compute/core/Error.h</a>&quot;</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_toolchain_support_8h.xhtml">support/ToolchainSupport.h</a>&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#ifndef BARE_METAL</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &lt;fstream&gt;</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#include &lt;iterator&gt;</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &lt;sstream&gt;</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#endif // ifndef BARE_METAL</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">namespace</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;{</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keywordtype">void</span> parse_mem_info(<span class="keywordtype">size_t</span> &amp;total, <span class="keywordtype">size_t</span> &amp;free, <span class="keywordtype">size_t</span> &amp;buffer)</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;{</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; free = 0;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; total = 0;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; buffer = 0;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="preprocessor">#ifndef BARE_METAL</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordtype">size_t</span> memcache = 0;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordtype">size_t</span> memfree = 0;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; std::ifstream meminfo_f;</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; meminfo_f.open(<span class="stringliteral">&quot;/proc/meminfo&quot;</span>, std::ios::in);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keywordflow">if</span>(meminfo_f.is_open())</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; std::string line;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">while</span>(<span class="keywordtype">bool</span>(getline(meminfo_f, line)))</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; std::istringstream iss(line);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; std::vector&lt;std::string&gt; tokens((std::istream_iterator&lt;std::string&gt;(iss)),</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; std::istream_iterator&lt;std::string&gt;());</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">if</span>(tokens[0] == <span class="stringliteral">&quot;MemTotal:&quot;</span>)</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; {</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; total = <a class="code" href="namespacearm__compute_1_1support_1_1cpp11.xhtml#ae7b85c41ac94d98f07b1cef18b33d2d1">arm_compute::support::cpp11::stoul</a>(tokens[1], <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; }</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(tokens[0] == <span class="stringliteral">&quot;MemFree:&quot;</span>)</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; memfree = <a class="code" href="namespacearm__compute_1_1support_1_1cpp11.xhtml#ae7b85c41ac94d98f07b1cef18b33d2d1">arm_compute::support::cpp11::stoul</a>(tokens[1], <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; }</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(tokens[0] == <span class="stringliteral">&quot;Buffers:&quot;</span>)</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; {</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; buffer = <a class="code" href="namespacearm__compute_1_1support_1_1cpp11.xhtml#ae7b85c41ac94d98f07b1cef18b33d2d1">arm_compute::support::cpp11::stoul</a>(tokens[1], <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span>(tokens[0] == <span class="stringliteral">&quot;Cached:&quot;</span>)</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; {</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; memcache = <a class="code" href="namespacearm__compute_1_1support_1_1cpp11.xhtml#ae7b85c41ac94d98f07b1cef18b33d2d1">arm_compute::support::cpp11::stoul</a>(tokens[1], <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; }</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; }</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; free = memfree + (buffer + memcache);</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="preprocessor">#endif // ifndef BARE_METAL</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;}</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;} <span class="comment">// namespace</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;<span class="keyword">namespace </span><a class="code" href="namespacearm__compute.xhtml">arm_compute</a></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;{</div><div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_m_e_m_info.xhtml#a1609b8101beb35633a19f845d22323a8"> 81</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classarm__compute_1_1_m_e_m_info.xhtml#a1609b8101beb35633a19f845d22323a8">MEMInfo::set_policy</a>(<a class="code" href="namespacearm__compute.xhtml#a4c9101ca1a1f72f48efff28b4b9a6495">MemoryPolicy</a> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#ad986b73e9d5f47a623a9b6d773c25e34">policy</a>)</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;{</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; _policy = <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#ad986b73e9d5f47a623a9b6d773c25e34">policy</a>;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;}</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;</div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_m_e_m_info.xhtml#aacc842e7ef6389e970d92af1d62793a7"> 86</a></span>&#160;<a class="code" href="namespacearm__compute.xhtml#a4c9101ca1a1f72f48efff28b4b9a6495">MemoryPolicy</a> <a class="code" href="classarm__compute_1_1_m_e_m_info.xhtml#aacc842e7ef6389e970d92af1d62793a7">MEMInfo::get_policy</a>()</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;{</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> _policy;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;}</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<a class="code" href="namespacearm__compute.xhtml#a4c9101ca1a1f72f48efff28b4b9a6495">MemoryPolicy</a> MEMInfo::_policy = { <a class="code" href="namespacearm__compute.xhtml#a4c9101ca1a1f72f48efff28b4b9a6495a1e23852820b9154316c7c06e2b7ba051">MemoryPolicy::NORMAL</a> };</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_m_e_m_info.xhtml#a8e6211e81e33a09af138b842ab4d8534"> 92</a></span>&#160;<a class="code" href="classarm__compute_1_1_m_e_m_info.xhtml#a8e6211e81e33a09af138b842ab4d8534">MEMInfo::MEMInfo</a>()</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; : _total(0), _free(0), _buffer(0)</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;{</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; parse_mem_info(_total, _free, _buffer);</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;</div><div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_m_e_m_info.xhtml#a417a573b0ef6347fa727ce756b76f1d2"> 98</a></span>&#160;<span class="keywordtype">size_t</span> <a class="code" href="classarm__compute_1_1_m_e_m_info.xhtml#a417a573b0ef6347fa727ce756b76f1d2">MEMInfo::get_total_in_kb</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="keyword"></span>{</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">return</span> _total;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;}</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;} <span class="comment">// namespace arm_compute</span></div><div class="ttc" id="namespacearm__compute_1_1support_1_1cpp11_xhtml_ae7b85c41ac94d98f07b1cef18b33d2d1"><div class="ttname"><a href="namespacearm__compute_1_1support_1_1cpp11.xhtml#ae7b85c41ac94d98f07b1cef18b33d2d1">arm_compute::support::cpp11::stoul</a></div><div class="ttdeci">unsigned long stoul(const std::string &amp;str, std::size_t *pos=0, NumericBase base=NumericBase::BASE_10)</div><div class="ttdoc">Convert string values to unsigned long.</div><div class="ttdef"><b>Definition:</b> <a href="_toolchain_support_8h_source.xhtml#l00088">ToolchainSupport.h:88</a></div></div>
<div class="ttc" id="_toolchain_support_8h_xhtml"><div class="ttname"><a href="_toolchain_support_8h.xhtml">ToolchainSupport.h</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_ad986b73e9d5f47a623a9b6d773c25e34"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#ad986b73e9d5f47a623a9b6d773c25e34">arm_compute::test::validation::policy</a></div><div class="ttdeci">policy</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_2_arithmetic_addition_8cpp_source.xhtml#l00136">ArithmeticAddition.cpp:136</a></div></div>
<div class="ttc" id="classarm__compute_1_1_m_e_m_info_xhtml_a8e6211e81e33a09af138b842ab4d8534"><div class="ttname"><a href="classarm__compute_1_1_m_e_m_info.xhtml#a8e6211e81e33a09af138b842ab4d8534">arm_compute::MEMInfo::MEMInfo</a></div><div class="ttdeci">MEMInfo()</div><div class="ttdef"><b>Definition:</b> <a href="_m_e_m_utils_8cpp_source.xhtml#l00092">MEMUtils.cpp:92</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml"><div class="ttname"><a href="namespacearm__compute.xhtml">arm_compute</a></div><div class="ttdoc">Copyright (c) 2017-2018 ARM Limited.</div><div class="ttdef"><b>Definition:</b> <a href="00__introduction_8dox_source.xhtml#l00024">00_introduction.dox:24</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a4c9101ca1a1f72f48efff28b4b9a6495a1e23852820b9154316c7c06e2b7ba051"><div class="ttname"><a href="namespacearm__compute.xhtml#a4c9101ca1a1f72f48efff28b4b9a6495a1e23852820b9154316c7c06e2b7ba051">arm_compute::MemoryPolicy::NORMAL</a></div></div>
<div class="ttc" id="classarm__compute_1_1_m_e_m_info_xhtml_aacc842e7ef6389e970d92af1d62793a7"><div class="ttname"><a href="classarm__compute_1_1_m_e_m_info.xhtml#aacc842e7ef6389e970d92af1d62793a7">arm_compute::MEMInfo::get_policy</a></div><div class="ttdeci">static MemoryPolicy get_policy()</div><div class="ttdef"><b>Definition:</b> <a href="_m_e_m_utils_8cpp_source.xhtml#l00086">MEMUtils.cpp:86</a></div></div>
<div class="ttc" id="_error_8h_xhtml"><div class="ttname"><a href="_error_8h.xhtml">Error.h</a></div></div>
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<div class="ttc" id="classarm__compute_1_1_m_e_m_info_xhtml_a417a573b0ef6347fa727ce756b76f1d2"><div class="ttname"><a href="classarm__compute_1_1_m_e_m_info.xhtml#a417a573b0ef6347fa727ce756b76f1d2">arm_compute::MEMInfo::get_total_in_kb</a></div><div class="ttdeci">size_t get_total_in_kb() const</div><div class="ttdoc">Return the total amount of RAM memory in the system expressed in KB.</div><div class="ttdef"><b>Definition:</b> <a href="_m_e_m_utils_8cpp_source.xhtml#l00098">MEMUtils.cpp:98</a></div></div>
<div class="ttc" id="classarm__compute_1_1_m_e_m_info_xhtml_a1609b8101beb35633a19f845d22323a8"><div class="ttname"><a href="classarm__compute_1_1_m_e_m_info.xhtml#a1609b8101beb35633a19f845d22323a8">arm_compute::MEMInfo::set_policy</a></div><div class="ttdeci">static void set_policy(MemoryPolicy policy)</div><div class="ttdef"><b>Definition:</b> <a href="_m_e_m_utils_8cpp_source.xhtml#l00081">MEMUtils.cpp:81</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a4c9101ca1a1f72f48efff28b4b9a6495"><div class="ttname"><a href="namespacearm__compute.xhtml#a4c9101ca1a1f72f48efff28b4b9a6495">arm_compute::MemoryPolicy</a></div><div class="ttdeci">MemoryPolicy</div><div class="ttdoc">Global memory policy.</div><div class="ttdef"><b>Definition:</b> <a href="_c_p_p_types_8h_source.xhtml#l00057">CPPTypes.h:57</a></div></div>
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