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<div class="title">SystemPropertiesUtils.hpp</div> </div>
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<a href="_system_properties_utils_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// SPDX-License-Identifier: MIT</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>  </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <string></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <sys/system_properties.h></span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <log/log.h></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">struct </span>ConvStringTo;</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">template</span><></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">struct </span>ConvStringTo<float></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> {</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keyword">static</span> <span class="keywordtype">float</span> Func(std::string s) { <span class="keywordflow">return</span> std::stof(s); }</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> };</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">template</span><></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">struct </span>ConvStringTo<int></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">static</span> <span class="keywordtype">int</span> Func(std::string s) { <span class="keywordflow">return</span> std::stoi(s); }</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> };</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">template</span><></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">struct </span>ConvStringTo<bool></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> {</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> Func(std::string s) { <span class="keywordflow">return</span> !!std::stoi(s); }</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> };</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keywordtype">void</span> GetCapabilitiesProperties([[maybe_unused]]<span class="keywordtype">void</span>* cookie,</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  [[maybe_unused]]<span class="keyword">const</span> <span class="keywordtype">char</span> *name,</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  [[maybe_unused]]<span class="keyword">const</span> <span class="keywordtype">char</span> *value,</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  [[maybe_unused]]uint32_t serial)</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  T &prop = *<span class="keyword">reinterpret_cast<</span>T*<span class="keyword">></span>(cookie);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  prop = ConvStringTo<T>::Func(std::string(value));</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> T ParseSystemProperty(<span class="keyword">const</span> <span class="keywordtype">char</span>* name, T defaultValue)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">try</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">const</span> prop_info *pInfo = __system_property_find(name);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (!pInfo)</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  ALOGW(<span class="stringliteral">"ArmnnDriver::ParseSystemProperty(): Could not find property [%s]."</span>, name);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  T property;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  __system_property_read_callback(pInfo, &GetCapabilitiesProperties<T>, &property);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  std::stringstream messageBuilder;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  messageBuilder << <span class="stringliteral">"ArmnnDriver::ParseSystemProperty(): Setting ["</span> << name << <span class="stringliteral">"]=["</span> << <span class="keyword">property</span> << <span class="stringliteral">"]."</span>;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  ALOGD(<span class="stringliteral">"%s"</span>, messageBuilder.str().c_str());</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span> property;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::invalid_argument& e)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  ALOGD(<span class="stringliteral">"ArmnnDriver::ParseSystemProperty(): Property [%s] has invalid data type."</span>, name);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::out_of_range& e)</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  ALOGD(<span class="stringliteral">"ArmnnDriver::ParseSystemProperty(): Property [%s] out of range for the data type."</span>, name);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">catch</span> (...)</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  ALOGD(<span class="stringliteral">"ArmnnDriver::ParseSystemProperty(): Unexpected exception reading system "</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="stringliteral">"property [%s]."</span>, name);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  std::stringstream messageBuilder;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  messageBuilder << <span class="stringliteral">"ArmnnDriver::ParseSystemProperty(): Falling back to default value ["</span> << defaultValue << <span class="stringliteral">"]"</span>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  ALOGD(<span class="stringliteral">"%s"</span>, messageBuilder.str().c_str());</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> defaultValue;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> }</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> } <span class="comment">//namespace</span></div>
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