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<div class="title">IScheduler.h</div> </div>
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<a href="_i_scheduler_8h.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) 2017-2019 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">#ifndef ARM_COMPUTE_ISCHEDULER_H</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#define ARM_COMPUTE_ISCHEDULER_H</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</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="l00028"></a><span class="lineno"> 28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &lt;functional&gt;</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacearm__compute.xhtml">arm_compute</a></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;{</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">class </span>ICPPKernel;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment">/** Scheduler interface to run kernels */</span></div><div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler.xhtml"> 36</a></span>&#160;<span class="keyword">class </span><a class="code" href="classarm__compute_1_1_i_scheduler.xhtml">IScheduler</a></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;<span class="keyword">public</span>:<span class="comment"></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment"> /** Strategies available to split a workload */</span></div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808"> 40</a></span>&#160; <span class="keyword">enum class</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808">StrategyHint</a></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808afe6f99ef1ec99efbdc19a9786cf1facc">STATIC</a>, <span class="comment">/**&lt; Split the workload evenly among the threads */</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808a0fcc90da4811c877ba9f9c12f7d60bc9">DYNAMIC</a>, <span class="comment">/**&lt; Split the workload dynamically using a bucket system */</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; };<span class="comment"></span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="comment"> /** Scheduler hints</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="comment"> * Collection of preferences set by the function regarding how to split a given workload</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml"> 49</a></span>&#160; <span class="keyword">class </span><a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml">Hints</a></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">public</span>:<span class="comment"></span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment"> /** Constructor</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment"> * @param[in] split_dimension Dimension along which to split the kernel&#39;s execution window.</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment"> * @param[in] strategy (Optional) Split strategy.</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment"> * @param[in] threshold (Optional) Dynamic scheduling capping threshold.</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a5a266231f17565daee90ba9b944b63c6"> 58</a></span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a5a266231f17565daee90ba9b944b63c6">Hints</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a4682a1a3d110d8f8807051cd998ced88">split_dimension</a>, <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808">StrategyHint</a> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a7d8915bebdf3785072169d23b3b6d6a3">strategy</a> = <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808afe6f99ef1ec99efbdc19a9786cf1facc">StrategyHint::STATIC</a>, <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a35edee05aa4b2e0e80c851cdc3e68654">threshold</a> = 0)</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; : _split_dimension(<a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a4682a1a3d110d8f8807051cd998ced88">split_dimension</a>), _strategy(<a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a7d8915bebdf3785072169d23b3b6d6a3">strategy</a>), _threshold(<a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a35edee05aa4b2e0e80c851cdc3e68654">threshold</a>)</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; }<span class="comment"></span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment"> /** Set the split_dimension hint</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment"> * @param[in] split_dimension Dimension along which to split the kernel&#39;s execution window.</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment"> * @return the Hints object</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#aa3f198c6c5870e2fff6b323f9933ae25"> 68</a></span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml">Hints</a> &amp;<a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#aa3f198c6c5870e2fff6b323f9933ae25">set_split_dimension</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a4682a1a3d110d8f8807051cd998ced88">split_dimension</a>)</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; {</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; _split_dimension = <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a4682a1a3d110d8f8807051cd998ced88">split_dimension</a>;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; }<span class="comment"></span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"> /** Return the prefered split dimension</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment"> * @return The split dimension</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a4682a1a3d110d8f8807051cd998ced88"> 77</a></span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a4682a1a3d110d8f8807051cd998ced88">split_dimension</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="keyword"> </span>{</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keywordflow">return</span> _split_dimension;</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"> 81</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment"> /** Set the strategy hint</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="comment"> * @param[in] strategy Prefered strategy to use to split the workload</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment"> * @return the Hints object</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#afae467bfef0ebb2891c61d767ec7a03e"> 88</a></span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml">Hints</a> &amp;<a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#afae467bfef0ebb2891c61d767ec7a03e">set_strategy</a>(<a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808">StrategyHint</a> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a7d8915bebdf3785072169d23b3b6d6a3">strategy</a>)</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; _strategy = <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a7d8915bebdf3785072169d23b3b6d6a3">strategy</a>;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; }<span class="comment"></span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment"> /** Return the prefered strategy to use to split workload.</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment"> * @return The strategy</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a7d8915bebdf3785072169d23b3b6d6a3"> 97</a></span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808">StrategyHint</a> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a7d8915bebdf3785072169d23b3b6d6a3">strategy</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="keyword"> </span>{</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordflow">return</span> _strategy;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; }<span class="comment"></span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment"> /** Return the granule capping threshold to be used by dynamic scheduling.</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment"> * @return The capping threshold</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a35edee05aa4b2e0e80c851cdc3e68654"> 105</a></span>&#160; <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a35edee05aa4b2e0e80c851cdc3e68654">threshold</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="keyword"> </span>{</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">return</span> _threshold;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; }</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _split_dimension;</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808">StrategyHint</a> _strategy;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keywordtype">int</span> _threshold;</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; };<span class="comment"></span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment"> /** Signature for the workloads to execute */</span></div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="classarm__compute_1_1_i_scheduler.xhtml#a4cdc00a99619ba76bf79a466cb85d4da"> 116</a></span>&#160; <span class="keyword">using</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#a4cdc00a99619ba76bf79a466cb85d4da">Workload</a> = std::function&lt;void(<span class="keyword">const</span> <a class="code" href="structarm__compute_1_1_thread_info.xhtml">ThreadInfo</a> &amp;)&gt;;<span class="comment"></span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="comment"> /** Default constructor. */</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#a34956db09db14c551e9966c9b66036f9">IScheduler</a>();</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="comment"> /** Destructor. */</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keyword">virtual</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#a6d209385481644d97e7ca96072b73eb8">~IScheduler</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="comment"> /** Sets the number of threads the scheduler will use to run the kernels.</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment"> * @param[in] num_threads If set to 0, then one thread per CPU core available on the system will be used, otherwise the number of threads specified.</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#a645ac2d9d4144fd0174296de7eb1e1b5">set_num_threads</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ac24584a63e484123e3756d1b2a1c9e2f">num_threads</a>) = 0;</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment"> /** Returns the number of threads that the SingleThreadScheduler has in his pool.</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment"> * @return Number of threads available in SingleThreadScheduler.</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ac24584a63e484123e3756d1b2a1c9e2f">num_threads</a>() <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="comment"> /** Runs the kernel in the same thread as the caller synchronously.</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="comment"> * @param[in] kernel Kernel to execute.</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="comment"> * @param[in] hints Hints for the scheduler.</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#a4e58f95544bd5ac6559a421671bd9842">schedule</a>(<a class="code" href="classarm__compute_1_1_i_c_p_p_kernel.xhtml">ICPPKernel</a> *kernel, <span class="keyword">const</span> <a class="code" href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml">Hints</a> &amp;hints) = 0;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="comment"> /** Execute all the passed workloads</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="comment"> * @note there is no guarantee regarding the order in which the workloads will be executed or whether or not they will be executed in parallel.</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="comment"> * @param[in] workloads Array of workloads to run</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="comment"> * @param[in] tag String that can be used by profiling tools to identify the workloads run by the scheduler (Can be null).</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#a3becf955da8cad5036399bcb90f1408d">run_tagged_workloads</a>(std::vector&lt;Workload&gt; &amp;workloads, <span class="keyword">const</span> <span class="keywordtype">char</span> *tag);</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment"> /** Get CPU info.</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="comment"> * @return CPU info.</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <a class="code" href="classarm__compute_1_1_c_p_u_info.xhtml">CPUInfo</a> &amp;<a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#ab0fd9e7b4f6240c55b4fe6a54d4418b5">cpu_info</a>();<span class="comment"></span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="comment"> /** Get a hint for the best possible number of execution threads</span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="comment"> * @warning In case we can&#39;t work out the best number of threads,</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="comment"> * std::thread::hardware_concurrency() is returned else 1 in case of bare metal builds</span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="comment"> * @return Best possible number of execution threads to use</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classarm__compute_1_1_i_scheduler.xhtml#a6de5358eb9a099cda48662b2fc523ec5">num_threads_hint</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="keyword">protected</span>:<span class="comment"></span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment"> /** Execute all the passed workloads</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="comment"> * @note there is no guarantee regarding the order in which the workloads will be executed or whether or not they will be executed in parallel.</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="comment"> * @param[in] workloads Array of workloads to run</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">void</span> run_workloads(std::vector&lt;Workload&gt; &amp;workloads) = 0;</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <a class="code" href="classarm__compute_1_1_c_p_u_info.xhtml">CPUInfo</a> _cpu_info;</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _num_threads_hint = {};</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;};</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;} <span class="comment">// namespace arm_compute</span></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* ARM_COMPUTE_ISCHEDULER_H */</span><span class="preprocessor"></span></div><div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_a4cdc00a99619ba76bf79a466cb85d4da"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#a4cdc00a99619ba76bf79a466cb85d4da">arm_compute::IScheduler::Workload</a></div><div class="ttdeci">std::function&lt; void(const ThreadInfo &amp;)&gt; Workload</div><div class="ttdoc">Signature for the workloads to execute.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00116">IScheduler.h:116</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_a34956db09db14c551e9966c9b66036f9"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#a34956db09db14c551e9966c9b66036f9">arm_compute::IScheduler::IScheduler</a></div><div class="ttdeci">IScheduler()</div><div class="ttdoc">Default constructor.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8cpp_source.xhtml#l00031">IScheduler.cpp:31</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_c_p_p_kernel_xhtml"><div class="ttname"><a href="classarm__compute_1_1_i_c_p_p_kernel.xhtml">arm_compute::ICPPKernel</a></div><div class="ttdoc">Common interface for all kernels implemented in C++.</div><div class="ttdef"><b>Definition:</b> <a href="_i_c_p_p_kernel_8h_source.xhtml#l00035">ICPPKernel.h:35</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_a645ac2d9d4144fd0174296de7eb1e1b5"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#a645ac2d9d4144fd0174296de7eb1e1b5">arm_compute::IScheduler::set_num_threads</a></div><div class="ttdeci">virtual void set_num_threads(unsigned int num_threads)=0</div><div class="ttdoc">Sets the number of threads the scheduler will use to run the kernels.</div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml">arm_compute::IScheduler</a></div><div class="ttdoc">Scheduler interface to run kernels.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00036">IScheduler.h:36</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_ad3ab921e075d1edd827faf95870aa808afe6f99ef1ec99efbdc19a9786cf1facc"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808afe6f99ef1ec99efbdc19a9786cf1facc">arm_compute::IScheduler::StrategyHint::STATIC</a></div><div class="ttdoc">Split the workload evenly among the threads.</div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_ab0fd9e7b4f6240c55b4fe6a54d4418b5"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#ab0fd9e7b4f6240c55b4fe6a54d4418b5">arm_compute::IScheduler::cpu_info</a></div><div class="ttdeci">CPUInfo &amp; cpu_info()</div><div class="ttdoc">Get CPU info.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8cpp_source.xhtml#l00039">IScheduler.cpp:39</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_a3becf955da8cad5036399bcb90f1408d"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#a3becf955da8cad5036399bcb90f1408d">arm_compute::IScheduler::run_tagged_workloads</a></div><div class="ttdeci">virtual void run_tagged_workloads(std::vector&lt; Workload &gt; &amp;workloads, const char *tag)</div><div class="ttdoc">Execute all the passed workloads.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8cpp_source.xhtml#l00048">IScheduler.cpp:48</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_1_1_hints_xhtml_a35edee05aa4b2e0e80c851cdc3e68654"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a35edee05aa4b2e0e80c851cdc3e68654">arm_compute::IScheduler::Hints::threshold</a></div><div class="ttdeci">int threshold() const</div><div class="ttdoc">Return the granule capping threshold to be used by dynamic scheduling.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00105">IScheduler.h:105</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) 2017-2020 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="classarm__compute_1_1_i_scheduler_1_1_hints_xhtml_a5a266231f17565daee90ba9b944b63c6"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a5a266231f17565daee90ba9b944b63c6">arm_compute::IScheduler::Hints::Hints</a></div><div class="ttdeci">Hints(unsigned int split_dimension, StrategyHint strategy=StrategyHint::STATIC, int threshold=0)</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00058">IScheduler.h:58</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_ad3ab921e075d1edd827faf95870aa808a0fcc90da4811c877ba9f9c12f7d60bc9"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808a0fcc90da4811c877ba9f9c12f7d60bc9">arm_compute::IScheduler::StrategyHint::DYNAMIC</a></div><div class="ttdoc">Split the workload dynamically using a bucket system.</div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_a6d209385481644d97e7ca96072b73eb8"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#a6d209385481644d97e7ca96072b73eb8">arm_compute::IScheduler::~IScheduler</a></div><div class="ttdeci">virtual ~IScheduler()=default</div><div class="ttdoc">Destructor.</div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_1_1_hints_xhtml_a7d8915bebdf3785072169d23b3b6d6a3"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a7d8915bebdf3785072169d23b3b6d6a3">arm_compute::IScheduler::Hints::strategy</a></div><div class="ttdeci">StrategyHint strategy() const</div><div class="ttdoc">Return the prefered strategy to use to split workload.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00097">IScheduler.h:97</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_1_1_hints_xhtml_aa3f198c6c5870e2fff6b323f9933ae25"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#aa3f198c6c5870e2fff6b323f9933ae25">arm_compute::IScheduler::Hints::set_split_dimension</a></div><div class="ttdeci">Hints &amp; set_split_dimension(unsigned int split_dimension)</div><div class="ttdoc">Set the split_dimension hint.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00068">IScheduler.h:68</a></div></div>
<div class="ttc" id="classarm__compute_1_1_c_p_u_info_xhtml"><div class="ttname"><a href="classarm__compute_1_1_c_p_u_info.xhtml">arm_compute::CPUInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="_c_p_p_types_8h_source.xhtml#l00105">CPPTypes.h:105</a></div></div>
<div class="ttc" id="_c_p_p_types_8h_xhtml"><div class="ttname"><a href="_c_p_p_types_8h.xhtml">CPPTypes.h</a></div></div>
<div class="ttc" id="structarm__compute_1_1_thread_info_xhtml"><div class="ttname"><a href="structarm__compute_1_1_thread_info.xhtml">arm_compute::ThreadInfo</a></div><div class="ttdoc">Information about executing thread and CPU.</div><div class="ttdef"><b>Definition:</b> <a href="_c_p_p_types_8h_source.xhtml#l00225">CPPTypes.h:225</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_a4e58f95544bd5ac6559a421671bd9842"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#a4e58f95544bd5ac6559a421671bd9842">arm_compute::IScheduler::schedule</a></div><div class="ttdeci">virtual void schedule(ICPPKernel *kernel, const Hints &amp;hints)=0</div><div class="ttdoc">Runs the kernel in the same thread as the caller synchronously.</div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_a6de5358eb9a099cda48662b2fc523ec5"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#a6de5358eb9a099cda48662b2fc523ec5">arm_compute::IScheduler::num_threads_hint</a></div><div class="ttdeci">unsigned int num_threads_hint() const</div><div class="ttdoc">Get a hint for the best possible number of execution threads.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8cpp_source.xhtml#l00044">IScheduler.cpp:44</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_1_1_hints_xhtml_a4682a1a3d110d8f8807051cd998ced88"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#a4682a1a3d110d8f8807051cd998ced88">arm_compute::IScheduler::Hints::split_dimension</a></div><div class="ttdeci">unsigned int split_dimension() const</div><div class="ttdoc">Return the prefered split dimension.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00077">IScheduler.h:77</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_ac24584a63e484123e3756d1b2a1c9e2f"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#ac24584a63e484123e3756d1b2a1c9e2f">arm_compute::IScheduler::num_threads</a></div><div class="ttdeci">virtual unsigned int num_threads() const =0</div><div class="ttdoc">Returns the number of threads that the SingleThreadScheduler has in his pool.</div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_1_1_hints_xhtml_afae467bfef0ebb2891c61d767ec7a03e"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml#afae467bfef0ebb2891c61d767ec7a03e">arm_compute::IScheduler::Hints::set_strategy</a></div><div class="ttdeci">Hints &amp; set_strategy(StrategyHint strategy)</div><div class="ttdoc">Set the strategy hint.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00088">IScheduler.h:88</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_1_1_hints_xhtml"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler_1_1_hints.xhtml">arm_compute::IScheduler::Hints</a></div><div class="ttdoc">Scheduler hints.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00049">IScheduler.h:49</a></div></div>
<div class="ttc" id="classarm__compute_1_1_i_scheduler_xhtml_ad3ab921e075d1edd827faf95870aa808"><div class="ttname"><a href="classarm__compute_1_1_i_scheduler.xhtml#ad3ab921e075d1edd827faf95870aa808">arm_compute::IScheduler::StrategyHint</a></div><div class="ttdeci">StrategyHint</div><div class="ttdoc">Strategies available to split a workload.</div><div class="ttdef"><b>Definition:</b> <a href="_i_scheduler_8h_source.xhtml#l00040">IScheduler.h:40</a></div></div>
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