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<li class="navelem"><a class="el" href="dir_938ab0ecf10b8b860ff766c820f665fd.html">mlx</a></li><li class="navelem"><a class="el" href="dir_1d446c9bd3c99228254c9484e0bc5c06.html">backend</a></li><li class="navelem"><a class="el" href="dir_d0c977ea65824390717cdb7efc36c157.html">metal</a></li><li class="navelem"><a class="el" href="dir_70a37effa88bcbd6b791977fa1e64356.html">kernels</a></li> </ul>
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<a href="atomic_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright © 2023 Apple Inc.</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span> </div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &lt;metal_atomic&gt;</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include &lt;metal_stdlib&gt;</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="keyword">using namespace </span><a class="code hl_namespace" href="namespacemetal.html">metal</a>;</div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment">// Atomic utils</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#pragma METAL internals : enable</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"><a class="line" href="atomic_8h.html#a91a8bdcae647947a83c6689d7f252d24"> 16</a></span><span class="keyword">constexpr</span> constant <span class="keywordtype">bool</span> <a class="code hl_variable" href="atomic_8h.html#a91a8bdcae647947a83c6689d7f252d24">is_metal_atomic</a> = _disjunction&lt;</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> is_same&lt;T, int&gt;,</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> is_same&lt;T, uint&gt;,</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> is_same&lt;T, ulong&gt;,</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> is_same&lt;T, float&gt;&gt;::value;</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#pragma METAL internals : disable</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> = <span class="keywordtype">void</span>&gt;</div>
<div class="foldopen" id="foldopen00025" data-start="{" data-end="};">
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"><a class="line" href="structmlx__atomic.html"> 25</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic</a> {</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"><a class="line" href="structmlx__atomic.html#a6f6651b8dd8149917c50cd99b13c6747"> 26</a></span> atomic&lt;uint&gt; <a class="code hl_variable" href="structmlx__atomic.html#a6f6651b8dd8149917c50cd99b13c6747">val</a>;</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span>};</div>
</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="foldopen" id="foldopen00030" data-start="{" data-end="};">
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"><a class="line" href="structmlx__atomic_3_01_t_00_01enable__if__t_3_01is__metal__atomic_3_01_t_01_4_01_4_01_4.html"> 30</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic</a>&lt;T, enable_if_t&lt;<a class="code hl_variable" href="atomic_8h.html#a91a8bdcae647947a83c6689d7f252d24">is_metal_atomic</a>&lt;T&gt;&gt;&gt; {</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"><a class="line" href="structmlx__atomic_3_01_t_00_01enable__if__t_3_01is__metal__atomic_3_01_t_01_4_01_4_01_4.html#a8dbf729fcd8c4a16e41b546c7405543d"> 31</a></span> atomic&lt;T&gt; <a class="code hl_variable" href="structmlx__atomic_3_01_t_00_01enable__if__t_3_01is__metal__atomic_3_01_t_01_4_01_4_01_4.html#a8dbf729fcd8c4a16e41b546c7405543d">val</a>;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span>};</div>
</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment">// Native metal atomics</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span>METAL_FUNC T</div>
<div class="foldopen" id="foldopen00040" data-start="{" data-end="}">
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"><a class="line" href="atomic_8h.html#a253a4e8c2c5768a069e2791b627dfc99"> 40</a></span><a class="code hl_function" href="atomic_8h.html#a253a4e8c2c5768a069e2791b627dfc99">mlx_atomic_load_explicit</a>(device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>, <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keywordflow">return</span> atomic_load_explicit(&amp;(<span class="keywordtype">object</span>[offset].val), memory_order_relaxed);</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>}</div>
</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span>METAL_FUNC <span class="keywordtype">void</span></div>
<div class="foldopen" id="foldopen00046" data-start="{" data-end="}">
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"><a class="line" href="atomic_8h.html#a0ae453140b0819a4c02f265334de98c0"> 46</a></span><a class="code hl_function" href="atomic_8h.html#a0ae453140b0819a4c02f265334de98c0">mlx_atomic_store_explicit</a>(device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>, T val, <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> atomic_store_explicit(&amp;(<span class="keywordtype">object</span>[offset].val), val, memory_order_relaxed);</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span>}</div>
</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00051" data-start="{" data-end="}">
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"><a class="line" href="atomic_8h.html#a253e3c870c0ddc7c28ab2f6ca2c3eae5"> 51</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#a253e3c870c0ddc7c28ab2f6ca2c3eae5">mlx_atomic_fetch_and_explicit</a>(</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> T val,</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> atomic_fetch_and_explicit(&amp;(<span class="keywordtype">object</span>[offset].val), val, memory_order_relaxed);</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span>}</div>
</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00059" data-start="{" data-end="}">
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"><a class="line" href="atomic_8h.html#ab7391f197001471e4788312bdb6ab37a"> 59</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#ab7391f197001471e4788312bdb6ab37a">mlx_atomic_fetch_or_explicit</a>(</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> T val,</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> atomic_fetch_or_explicit(&amp;(<span class="keywordtype">object</span>[offset].val), val, memory_order_relaxed);</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span>}</div>
</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00067" data-start="{" data-end="}">
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"><a class="line" href="atomic_8h.html#a2ec33dca0039bd944d73d1c2b378cc19"> 67</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#a2ec33dca0039bd944d73d1c2b378cc19">mlx_atomic_fetch_min_explicit</a>(</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> T val,</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> atomic_fetch_min_explicit(&amp;(<span class="keywordtype">object</span>[offset].val), val, memory_order_relaxed);</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span>}</div>
</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="atomic_8h.html#ac480f2b459a8ad9095cee353e152d00c"> 75</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#ac480f2b459a8ad9095cee353e152d00c">mlx_atomic_fetch_max_explicit</a>(</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> T val,</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> atomic_fetch_max_explicit(&amp;(<span class="keywordtype">object</span>[offset].val), val, memory_order_relaxed);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span>}</div>
</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00083" data-start="{" data-end="}">
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"><a class="line" href="atomic_8h.html#aad448d9e06e001700b65ca8317216a3b"> 83</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#aad448d9e06e001700b65ca8317216a3b">mlx_atomic_fetch_add_explicit</a>(</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> T val,</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> atomic_fetch_add_explicit(&amp;(<span class="keywordtype">object</span>[offset].val), val, memory_order_relaxed);</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span>}</div>
</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00091" data-start="{" data-end="}">
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"><a class="line" href="atomic_8h.html#adfdbea60436f14f1af9ce36e2a0a77a3"> 91</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#adfdbea60436f14f1af9ce36e2a0a77a3">mlx_atomic_fetch_mul_explicit</a>(</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> T val,</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> T expected = <a class="code hl_function" href="atomic_8h.html#a253a4e8c2c5768a069e2791b627dfc99">mlx_atomic_load_explicit</a>(<span class="keywordtype">object</span>, offset);</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keywordflow">while</span> (!<a class="code hl_function" href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f">mlx_atomic_compare_exchange_weak_explicit</a>(</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordtype">object</span>, &amp;expected, val * expected, offset)) {</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> }</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span>}</div>
</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00102" data-start="{" data-end="}">
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"><a class="line" href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f"> 102</a></span>METAL_FUNC <span class="keywordtype">bool</span> <a class="code hl_function" href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f">mlx_atomic_compare_exchange_weak_explicit</a>(</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> thread T* expected,</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> T val,</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="keywordflow">return</span> atomic_compare_exchange_weak_explicit(</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> &amp;(<span class="keywordtype">object</span>[offset].val),</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> expected,</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> val,</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> memory_order_relaxed,</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> memory_order_relaxed);</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span>}</div>
</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="comment">// Specialization for float since it does not atomic_fetch_min_explicit</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span><span class="keyword">template</span> &lt;&gt;</div>
<div class="foldopen" id="foldopen00117" data-start="{" data-end="}">
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"><a class="line" href="atomic_8h.html#ab7d1dc49f319f239b7ee0b7c72976dd0"> 117</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#ab7d1dc49f319f239b7ee0b7c72976dd0">mlx_atomic_fetch_min_explicit&lt;float&gt;</a>(</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;float&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keywordtype">float</span> val,</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordtype">float</span> expected = <a class="code hl_function" href="atomic_8h.html#a253a4e8c2c5768a069e2791b627dfc99">mlx_atomic_load_explicit</a>(<span class="keywordtype">object</span>, offset);</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keywordflow">while</span> (val &lt; expected) {</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f">mlx_atomic_compare_exchange_weak_explicit</a>(</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordtype">object</span>, &amp;expected, val, offset)) {</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> }</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> }</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span>}</div>
</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span><span class="comment">// Specialization for float since it does not atomic_fetch_max_explicit</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span><span class="keyword">template</span> &lt;&gt;</div>
<div class="foldopen" id="foldopen00132" data-start="{" data-end="}">
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"><a class="line" href="atomic_8h.html#a1dce2abfa16417122c4d2bf261129ae4"> 132</a></span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#a1dce2abfa16417122c4d2bf261129ae4">mlx_atomic_fetch_max_explicit&lt;float&gt;</a>(</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;float&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="keywordtype">float</span> val,</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordtype">float</span> expected = <a class="code hl_function" href="atomic_8h.html#a253a4e8c2c5768a069e2791b627dfc99">mlx_atomic_load_explicit</a>(<span class="keywordtype">object</span>, offset);</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">while</span> (val &gt; expected) {</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f">mlx_atomic_compare_exchange_weak_explicit</a>(</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keywordtype">object</span>, &amp;expected, val, offset)) {</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> }</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> }</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span>}</div>
</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span><span class="comment">// Custom atomics</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> </div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span><span class="keyword">namespace </span>{</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span><span class="keyword">constexpr</span> constant uint packing_size = <span class="keyword">sizeof</span>(uint) / <span class="keyword">sizeof</span>(T);</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> </div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span><span class="keyword">union </span>uint_or_packed {</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> T val[packing_size&lt;T&gt;];</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> uint <a class="code hl_function" href="namespacemlx_1_1core_1_1random.html#abb895baa477f5a06b5f88e69245f1825">bits</a>;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span>};</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> Op&gt;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span><span class="keyword">struct </span>mlx_atomic_update_helper {</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> uint operator()(uint_or_packed&lt;T&gt; init, T update, <span class="keywordtype">size_t</span> elem_offset) {</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> Op <a class="code hl_variable" href="common_2binary_8h.html#a70228731d29946574b238d21fb4b360c">op</a>;</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <a class="code hl_function" href="namespacemlx_1_1core_1_1distributed.html#a33633c058c7ec82cca4f237243c6810d">init</a>.val[elem_offset] = <a class="code hl_variable" href="common_2binary_8h.html#a70228731d29946574b238d21fb4b360c">op</a>(update, <a class="code hl_function" href="namespacemlx_1_1core_1_1distributed.html#a33633c058c7ec82cca4f237243c6810d">init</a>.val[elem_offset]);</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespacemlx_1_1core_1_1distributed.html#a33633c058c7ec82cca4f237243c6810d">init</a>.bits;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> }</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span>};</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> Op&gt;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span>METAL_FUNC <span class="keywordtype">void</span> mlx_atomic_update_and_store(</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> T update,</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keywordtype">size_t</span> pack_offset = offset / packing_size&lt;T&gt;;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> <span class="keywordtype">size_t</span> elem_offset = offset % packing_size&lt;T&gt;;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> mlx_atomic_update_helper&lt;T, Op&gt; helper;</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> uint_or_packed&lt;T&gt; expected;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> expected.bits =</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> atomic_load_explicit(&amp;(<span class="keywordtype">object</span>[pack_offset].val), memory_order_relaxed);</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keywordflow">while</span> (Op::condition(update, expected.val[elem_offset]) &amp;&amp;</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> !<a class="code hl_function" href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f">mlx_atomic_compare_exchange_weak_explicit</a>(</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> &amp;(expected.bits),</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> helper(expected, update, elem_offset),</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> pack_offset)) {</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> }</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span>}</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> </div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span><span class="keyword">struct </span>__None {</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> condition(T a, T b) {</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span><span class="preprocessor">#pragma unused(a)</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span><span class="preprocessor">#pragma unused(b)</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> }</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> T operator()(T a, T b) {</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span><span class="preprocessor">#pragma unused(b)</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> }</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span>};</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span><span class="keyword">struct </span>__Add {</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> condition(T a, T b) {</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span><span class="preprocessor">#pragma unused(a)</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span><span class="preprocessor">#pragma unused(b)</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> }</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> T operator()(T a, T b) {</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="keywordflow">return</span> a + b;</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> }</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span>};</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span><span class="keyword">struct </span>__Mul {</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> condition(T a, T b) {</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span><span class="preprocessor">#pragma unused(a)</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keywordflow">return</span> b != 0;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> }</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> T operator()(T a, T b) {</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> <span class="keywordflow">return</span> a * b;</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> }</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span>};</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> </div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span><span class="keyword">struct </span>__Max {</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> condition(T a, T b) {</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keywordflow">return</span> a &gt; b;</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> }</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> T operator()(T a, T b) {</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespacemetal.html#a853c80479ab2264d9c4587c7bcac767b">max</a>(a, b);</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> }</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span>};</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> </div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span><span class="keyword">struct </span>__Min {</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> condition(T a, T b) {</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> <span class="keywordflow">return</span> a &lt; b;</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> }</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> </div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> T operator()(T a, T b) {</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespacemetal.html#a6653b28c9473087141eddce39878d4d3">min</a>(a, b);</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> }</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span>};</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> </div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span>} <span class="comment">// namespace</span></div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> </div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span>METAL_FUNC T</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span><a class="code hl_function" href="atomic_8h.html#a253a4e8c2c5768a069e2791b627dfc99">mlx_atomic_load_explicit</a>(device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>, <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> <span class="keywordtype">size_t</span> pack_offset = offset / <span class="keyword">sizeof</span>(T);</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="keywordtype">size_t</span> elem_offset = offset % <span class="keyword">sizeof</span>(T);</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> uint_or_packed&lt;T&gt; packed_val;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> packed_val.bits =</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> atomic_load_explicit(&amp;(<span class="keywordtype">object</span>[pack_offset].val), memory_order_relaxed);</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> <span class="keywordflow">return</span> packed_val.val[elem_offset];</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span>}</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> </div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span>METAL_FUNC <span class="keywordtype">void</span></div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span><a class="code hl_function" href="atomic_8h.html#a0ae453140b0819a4c02f265334de98c0">mlx_atomic_store_explicit</a>(device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>, T val, <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> mlx_atomic_update_and_store&lt;T, __None&lt;T&gt;&gt;(object, val, offset);</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span>}</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#a253e3c870c0ddc7c28ab2f6ca2c3eae5">mlx_atomic_fetch_and_explicit</a>(</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> T val,</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> <span class="keywordtype">size_t</span> pack_offset = offset / packing_size&lt;T&gt;;</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> <span class="keywordtype">size_t</span> elem_offset = offset % packing_size&lt;T&gt;;</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> uint_or_packed&lt;T&gt; <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>;</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>.bits = __UINT32_MAX__;</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>.val[elem_offset] = val;</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> </div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> atomic_fetch_and_explicit(</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> &amp;(<span class="keywordtype">object</span>[pack_offset].val), <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>.bits, memory_order_relaxed);</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span>}</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> </div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#ab7391f197001471e4788312bdb6ab37a">mlx_atomic_fetch_or_explicit</a>(</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> T val,</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> <span class="keywordtype">size_t</span> pack_offset = offset / packing_size&lt;T&gt;;</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> <span class="keywordtype">size_t</span> elem_offset = offset % packing_size&lt;T&gt;;</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> uint_or_packed&lt;T&gt; <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>;</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>.bits = 0;</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>.val[elem_offset] = val;</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> </div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> atomic_fetch_or_explicit(</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> &amp;(<span class="keywordtype">object</span>[pack_offset].val), <a class="code hl_function" href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">identity</a>.bits, memory_order_relaxed);</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span>}</div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> </div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#a2ec33dca0039bd944d73d1c2b378cc19">mlx_atomic_fetch_min_explicit</a>(</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> T val,</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> mlx_atomic_update_and_store&lt;T, __Min&lt;T&gt;&gt;(object, val, offset);</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span>}</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> </div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#ac480f2b459a8ad9095cee353e152d00c">mlx_atomic_fetch_max_explicit</a>(</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> T val,</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> mlx_atomic_update_and_store&lt;T, __Max&lt;T&gt;&gt;(object, val, offset);</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span>}</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> </div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#aad448d9e06e001700b65ca8317216a3b">mlx_atomic_fetch_add_explicit</a>(</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> T val,</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> mlx_atomic_update_and_store&lt;T, __Add&lt;T&gt;&gt;(object, val, offset);</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span>}</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> </div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span>METAL_FUNC <span class="keywordtype">void</span> <a class="code hl_function" href="atomic_8h.html#adfdbea60436f14f1af9ce36e2a0a77a3">mlx_atomic_fetch_mul_explicit</a>(</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> T val,</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span> mlx_atomic_update_and_store&lt;T, __Mul&lt;T&gt;&gt;(object, val, offset);</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span>}</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> </div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, enable_if_t&lt;!is_metal_atomic&lt;T&gt;, <span class="keywordtype">bool</span>&gt; = true&gt;</div>
<div class="foldopen" id="foldopen00334" data-start="{" data-end="}">
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"><a class="line" href="atomic_8h.html#aa8f47b2e9b95d4b00ad51f08b070deb5"> 334</a></span>METAL_FUNC <span class="keywordtype">bool</span> <a class="code hl_function" href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f">mlx_atomic_compare_exchange_weak_explicit</a>(</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> device <a class="code hl_struct" href="structmlx__atomic.html">mlx_atomic&lt;T&gt;</a>* <span class="keywordtype">object</span>,</div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> thread uint* expected,</div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> uint val,</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> <span class="keywordtype">size_t</span> offset) {</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> <span class="keywordflow">return</span> atomic_compare_exchange_weak_explicit(</div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span> &amp;(<span class="keywordtype">object</span>[offset].val),</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> expected,</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span> val,</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> memory_order_relaxed,</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> memory_order_relaxed);</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span>}</div>
</div>
<div class="ttc" id="aatomic_8h_html_a0ae453140b0819a4c02f265334de98c0"><div class="ttname"><a href="atomic_8h.html#a0ae453140b0819a4c02f265334de98c0">mlx_atomic_store_explicit</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_store_explicit(device mlx_atomic&lt; T &gt; *object, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:46</div></div>
<div class="ttc" id="aatomic_8h_html_a1dce2abfa16417122c4d2bf261129ae4"><div class="ttname"><a href="atomic_8h.html#a1dce2abfa16417122c4d2bf261129ae4">mlx_atomic_fetch_max_explicit&lt; float &gt;</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_max_explicit&lt; float &gt;(device mlx_atomic&lt; float &gt; *object, float val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:132</div></div>
<div class="ttc" id="aatomic_8h_html_a253a4e8c2c5768a069e2791b627dfc99"><div class="ttname"><a href="atomic_8h.html#a253a4e8c2c5768a069e2791b627dfc99">mlx_atomic_load_explicit</a></div><div class="ttdeci">METAL_FUNC T mlx_atomic_load_explicit(device mlx_atomic&lt; T &gt; *object, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:40</div></div>
<div class="ttc" id="aatomic_8h_html_a253e3c870c0ddc7c28ab2f6ca2c3eae5"><div class="ttname"><a href="atomic_8h.html#a253e3c870c0ddc7c28ab2f6ca2c3eae5">mlx_atomic_fetch_and_explicit</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_and_explicit(device mlx_atomic&lt; T &gt; *object, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:51</div></div>
<div class="ttc" id="aatomic_8h_html_a2ec33dca0039bd944d73d1c2b378cc19"><div class="ttname"><a href="atomic_8h.html#a2ec33dca0039bd944d73d1c2b378cc19">mlx_atomic_fetch_min_explicit</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_min_explicit(device mlx_atomic&lt; T &gt; *object, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:67</div></div>
<div class="ttc" id="aatomic_8h_html_a91a8bdcae647947a83c6689d7f252d24"><div class="ttname"><a href="atomic_8h.html#a91a8bdcae647947a83c6689d7f252d24">is_metal_atomic</a></div><div class="ttdeci">constexpr constant bool is_metal_atomic</div><div class="ttdef"><b>Definition</b> atomic.h:16</div></div>
<div class="ttc" id="aatomic_8h_html_aad448d9e06e001700b65ca8317216a3b"><div class="ttname"><a href="atomic_8h.html#aad448d9e06e001700b65ca8317216a3b">mlx_atomic_fetch_add_explicit</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_add_explicit(device mlx_atomic&lt; T &gt; *object, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:83</div></div>
<div class="ttc" id="aatomic_8h_html_ab7391f197001471e4788312bdb6ab37a"><div class="ttname"><a href="atomic_8h.html#ab7391f197001471e4788312bdb6ab37a">mlx_atomic_fetch_or_explicit</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_or_explicit(device mlx_atomic&lt; T &gt; *object, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:59</div></div>
<div class="ttc" id="aatomic_8h_html_ab7d1dc49f319f239b7ee0b7c72976dd0"><div class="ttname"><a href="atomic_8h.html#ab7d1dc49f319f239b7ee0b7c72976dd0">mlx_atomic_fetch_min_explicit&lt; float &gt;</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_min_explicit&lt; float &gt;(device mlx_atomic&lt; float &gt; *object, float val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:117</div></div>
<div class="ttc" id="aatomic_8h_html_ac480f2b459a8ad9095cee353e152d00c"><div class="ttname"><a href="atomic_8h.html#ac480f2b459a8ad9095cee353e152d00c">mlx_atomic_fetch_max_explicit</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_max_explicit(device mlx_atomic&lt; T &gt; *object, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:75</div></div>
<div class="ttc" id="aatomic_8h_html_ad7f32327ff66354cfa2f0cfdac79316f"><div class="ttname"><a href="atomic_8h.html#ad7f32327ff66354cfa2f0cfdac79316f">mlx_atomic_compare_exchange_weak_explicit</a></div><div class="ttdeci">METAL_FUNC bool mlx_atomic_compare_exchange_weak_explicit(device mlx_atomic&lt; T &gt; *object, thread T *expected, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:102</div></div>
<div class="ttc" id="aatomic_8h_html_adfdbea60436f14f1af9ce36e2a0a77a3"><div class="ttname"><a href="atomic_8h.html#adfdbea60436f14f1af9ce36e2a0a77a3">mlx_atomic_fetch_mul_explicit</a></div><div class="ttdeci">METAL_FUNC void mlx_atomic_fetch_mul_explicit(device mlx_atomic&lt; T &gt; *object, T val, size_t offset)</div><div class="ttdef"><b>Definition</b> atomic.h:91</div></div>
<div class="ttc" id="acommon_2binary_8h_html_a70228731d29946574b238d21fb4b360c"><div class="ttname"><a href="common_2binary_8h.html#a70228731d29946574b238d21fb4b360c">op</a></div><div class="ttdeci">Op op</div><div class="ttdef"><b>Definition</b> binary.h:129</div></div>
<div class="ttc" id="agroup__ops_html_ga484eaa10d5e19a4ca46d3a9cd9fab600"><div class="ttname"><a href="group__ops.html#ga484eaa10d5e19a4ca46d3a9cd9fab600">mlx::core::identity</a></div><div class="ttdeci">array identity(int n, Dtype dtype, StreamOrDevice s={})</div><div class="ttdoc">Create a square matrix of shape (n,n) of zeros, and ones in the major diagonal.</div></div>
<div class="ttc" id="anamespacemetal_html"><div class="ttname"><a href="namespacemetal.html">metal</a></div><div class="ttdef"><b>Definition</b> bf16.h:265</div></div>
<div class="ttc" id="anamespacemetal_html_a6653b28c9473087141eddce39878d4d3"><div class="ttname"><a href="namespacemetal.html#a6653b28c9473087141eddce39878d4d3">metal::min</a></div><div class="ttdeci">METAL_FUNC bfloat16_t min(bfloat16_t x, bfloat16_t y)</div><div class="ttdef"><b>Definition</b> bf16_math.h:234</div></div>
<div class="ttc" id="anamespacemetal_html_a853c80479ab2264d9c4587c7bcac767b"><div class="ttname"><a href="namespacemetal.html#a853c80479ab2264d9c4587c7bcac767b">metal::max</a></div><div class="ttdeci">METAL_FUNC bfloat16_t max(bfloat16_t x, bfloat16_t y)</div><div class="ttdef"><b>Definition</b> bf16_math.h:234</div></div>
<div class="ttc" id="anamespacemlx_1_1core_1_1distributed_html_a33633c058c7ec82cca4f237243c6810d"><div class="ttname"><a href="namespacemlx_1_1core_1_1distributed.html#a33633c058c7ec82cca4f237243c6810d">mlx::core::distributed::init</a></div><div class="ttdeci">Group init(bool strict=false)</div><div class="ttdoc">Initialize the distributed backend and return the group containing all discoverable processes.</div></div>
<div class="ttc" id="anamespacemlx_1_1core_1_1random_html_abb895baa477f5a06b5f88e69245f1825"><div class="ttname"><a href="namespacemlx_1_1core_1_1random.html#abb895baa477f5a06b5f88e69245f1825">mlx::core::random::bits</a></div><div class="ttdeci">array bits(const std::vector&lt; int &gt; &amp;shape, int width, const std::optional&lt; array &gt; &amp;key=std::nullopt, StreamOrDevice s={})</div><div class="ttdoc">Generate an array with type uint32 filled with random bits.</div></div>
<div class="ttc" id="astructmlx__atomic_3_01_t_00_01enable__if__t_3_01is__metal__atomic_3_01_t_01_4_01_4_01_4_html_a8dbf729fcd8c4a16e41b546c7405543d"><div class="ttname"><a href="structmlx__atomic_3_01_t_00_01enable__if__t_3_01is__metal__atomic_3_01_t_01_4_01_4_01_4.html#a8dbf729fcd8c4a16e41b546c7405543d">mlx_atomic&lt; T, enable_if_t&lt; is_metal_atomic&lt; T &gt; &gt; &gt;::val</a></div><div class="ttdeci">atomic&lt; T &gt; val</div><div class="ttdef"><b>Definition</b> atomic.h:31</div></div>
<div class="ttc" id="astructmlx__atomic_html"><div class="ttname"><a href="structmlx__atomic.html">mlx_atomic</a></div><div class="ttdef"><b>Definition</b> atomic.h:25</div></div>
<div class="ttc" id="astructmlx__atomic_html_a6f6651b8dd8149917c50cd99b13c6747"><div class="ttname"><a href="structmlx__atomic.html#a6f6651b8dd8149917c50cd99b13c6747">mlx_atomic::val</a></div><div class="ttdeci">atomic&lt; uint &gt; val</div><div class="ttdef"><b>Definition</b> atomic.h:26</div></div>
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