| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| <meta name="generator" content="rustdoc"> |
| <meta name="description" content="Source to the Rust file `/home/fmp/.cargo/registry/src/github.com-1ecc6299db9ec823/thread_local-0.2.7/src/lib.rs`."> |
| <meta name="keywords" content="rust, rustlang, rust-lang"> |
| |
| <title>lib.rs.html -- source</title> |
| |
| <link rel="stylesheet" type="text/css" href="../../normalize.css"> |
| <link rel="stylesheet" type="text/css" href="../../rustdoc.css"> |
| <link rel="stylesheet" type="text/css" href="../../main.css"> |
| |
| |
| |
| |
| </head> |
| <body class="rustdoc source"> |
| <!--[if lte IE 8]> |
| <div class="warning"> |
| This old browser is unsupported and will most likely display funky |
| things. |
| </div> |
| <![endif]--> |
| |
| |
| |
| <nav class="sidebar"> |
| |
| |
| </nav> |
| |
| <nav class="sub"> |
| <form class="search-form js-only"> |
| <div class="search-container"> |
| <input class="search-input" name="search" |
| autocomplete="off" |
| placeholder="Click or press ‘S’ to search, ‘?’ for more options…" |
| type="search"> |
| </div> |
| </form> |
| </nav> |
| |
| <section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span> |
| <span id="2"> 2</span> |
| <span id="3"> 3</span> |
| <span id="4"> 4</span> |
| <span id="5"> 5</span> |
| <span id="6"> 6</span> |
| <span id="7"> 7</span> |
| <span id="8"> 8</span> |
| <span id="9"> 9</span> |
| <span id="10"> 10</span> |
| <span id="11"> 11</span> |
| <span id="12"> 12</span> |
| <span id="13"> 13</span> |
| <span id="14"> 14</span> |
| <span id="15"> 15</span> |
| <span id="16"> 16</span> |
| <span id="17"> 17</span> |
| <span id="18"> 18</span> |
| <span id="19"> 19</span> |
| <span id="20"> 20</span> |
| <span id="21"> 21</span> |
| <span id="22"> 22</span> |
| <span id="23"> 23</span> |
| <span id="24"> 24</span> |
| <span id="25"> 25</span> |
| <span id="26"> 26</span> |
| <span id="27"> 27</span> |
| <span id="28"> 28</span> |
| <span id="29"> 29</span> |
| <span id="30"> 30</span> |
| <span id="31"> 31</span> |
| <span id="32"> 32</span> |
| <span id="33"> 33</span> |
| <span id="34"> 34</span> |
| <span id="35"> 35</span> |
| <span id="36"> 36</span> |
| <span id="37"> 37</span> |
| <span id="38"> 38</span> |
| <span id="39"> 39</span> |
| <span id="40"> 40</span> |
| <span id="41"> 41</span> |
| <span id="42"> 42</span> |
| <span id="43"> 43</span> |
| <span id="44"> 44</span> |
| <span id="45"> 45</span> |
| <span id="46"> 46</span> |
| <span id="47"> 47</span> |
| <span id="48"> 48</span> |
| <span id="49"> 49</span> |
| <span id="50"> 50</span> |
| <span id="51"> 51</span> |
| <span id="52"> 52</span> |
| <span id="53"> 53</span> |
| <span id="54"> 54</span> |
| <span id="55"> 55</span> |
| <span id="56"> 56</span> |
| <span id="57"> 57</span> |
| <span id="58"> 58</span> |
| <span id="59"> 59</span> |
| <span id="60"> 60</span> |
| <span id="61"> 61</span> |
| <span id="62"> 62</span> |
| <span id="63"> 63</span> |
| <span id="64"> 64</span> |
| <span id="65"> 65</span> |
| <span id="66"> 66</span> |
| <span id="67"> 67</span> |
| <span id="68"> 68</span> |
| <span id="69"> 69</span> |
| <span id="70"> 70</span> |
| <span id="71"> 71</span> |
| <span id="72"> 72</span> |
| <span id="73"> 73</span> |
| <span id="74"> 74</span> |
| <span id="75"> 75</span> |
| <span id="76"> 76</span> |
| <span id="77"> 77</span> |
| <span id="78"> 78</span> |
| <span id="79"> 79</span> |
| <span id="80"> 80</span> |
| <span id="81"> 81</span> |
| <span id="82"> 82</span> |
| <span id="83"> 83</span> |
| <span id="84"> 84</span> |
| <span id="85"> 85</span> |
| <span id="86"> 86</span> |
| <span id="87"> 87</span> |
| <span id="88"> 88</span> |
| <span id="89"> 89</span> |
| <span id="90"> 90</span> |
| <span id="91"> 91</span> |
| <span id="92"> 92</span> |
| <span id="93"> 93</span> |
| <span id="94"> 94</span> |
| <span id="95"> 95</span> |
| <span id="96"> 96</span> |
| <span id="97"> 97</span> |
| <span id="98"> 98</span> |
| <span id="99"> 99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| <span id="335">335</span> |
| <span id="336">336</span> |
| <span id="337">337</span> |
| <span id="338">338</span> |
| <span id="339">339</span> |
| <span id="340">340</span> |
| <span id="341">341</span> |
| <span id="342">342</span> |
| <span id="343">343</span> |
| <span id="344">344</span> |
| <span id="345">345</span> |
| <span id="346">346</span> |
| <span id="347">347</span> |
| <span id="348">348</span> |
| <span id="349">349</span> |
| <span id="350">350</span> |
| <span id="351">351</span> |
| <span id="352">352</span> |
| <span id="353">353</span> |
| <span id="354">354</span> |
| <span id="355">355</span> |
| <span id="356">356</span> |
| <span id="357">357</span> |
| <span id="358">358</span> |
| <span id="359">359</span> |
| <span id="360">360</span> |
| <span id="361">361</span> |
| <span id="362">362</span> |
| <span id="363">363</span> |
| <span id="364">364</span> |
| <span id="365">365</span> |
| <span id="366">366</span> |
| <span id="367">367</span> |
| <span id="368">368</span> |
| <span id="369">369</span> |
| <span id="370">370</span> |
| <span id="371">371</span> |
| <span id="372">372</span> |
| <span id="373">373</span> |
| <span id="374">374</span> |
| <span id="375">375</span> |
| <span id="376">376</span> |
| <span id="377">377</span> |
| <span id="378">378</span> |
| <span id="379">379</span> |
| <span id="380">380</span> |
| <span id="381">381</span> |
| <span id="382">382</span> |
| <span id="383">383</span> |
| <span id="384">384</span> |
| <span id="385">385</span> |
| <span id="386">386</span> |
| <span id="387">387</span> |
| <span id="388">388</span> |
| <span id="389">389</span> |
| <span id="390">390</span> |
| <span id="391">391</span> |
| <span id="392">392</span> |
| <span id="393">393</span> |
| <span id="394">394</span> |
| <span id="395">395</span> |
| <span id="396">396</span> |
| <span id="397">397</span> |
| <span id="398">398</span> |
| <span id="399">399</span> |
| <span id="400">400</span> |
| <span id="401">401</span> |
| <span id="402">402</span> |
| <span id="403">403</span> |
| <span id="404">404</span> |
| <span id="405">405</span> |
| <span id="406">406</span> |
| <span id="407">407</span> |
| <span id="408">408</span> |
| <span id="409">409</span> |
| <span id="410">410</span> |
| <span id="411">411</span> |
| <span id="412">412</span> |
| <span id="413">413</span> |
| <span id="414">414</span> |
| <span id="415">415</span> |
| <span id="416">416</span> |
| <span id="417">417</span> |
| <span id="418">418</span> |
| <span id="419">419</span> |
| <span id="420">420</span> |
| <span id="421">421</span> |
| <span id="422">422</span> |
| <span id="423">423</span> |
| <span id="424">424</span> |
| <span id="425">425</span> |
| <span id="426">426</span> |
| <span id="427">427</span> |
| <span id="428">428</span> |
| <span id="429">429</span> |
| <span id="430">430</span> |
| <span id="431">431</span> |
| <span id="432">432</span> |
| <span id="433">433</span> |
| <span id="434">434</span> |
| <span id="435">435</span> |
| <span id="436">436</span> |
| <span id="437">437</span> |
| <span id="438">438</span> |
| <span id="439">439</span> |
| <span id="440">440</span> |
| <span id="441">441</span> |
| <span id="442">442</span> |
| <span id="443">443</span> |
| <span id="444">444</span> |
| <span id="445">445</span> |
| <span id="446">446</span> |
| <span id="447">447</span> |
| <span id="448">448</span> |
| <span id="449">449</span> |
| <span id="450">450</span> |
| <span id="451">451</span> |
| <span id="452">452</span> |
| <span id="453">453</span> |
| <span id="454">454</span> |
| <span id="455">455</span> |
| <span id="456">456</span> |
| <span id="457">457</span> |
| <span id="458">458</span> |
| <span id="459">459</span> |
| <span id="460">460</span> |
| <span id="461">461</span> |
| <span id="462">462</span> |
| <span id="463">463</span> |
| <span id="464">464</span> |
| <span id="465">465</span> |
| <span id="466">466</span> |
| <span id="467">467</span> |
| <span id="468">468</span> |
| <span id="469">469</span> |
| <span id="470">470</span> |
| <span id="471">471</span> |
| <span id="472">472</span> |
| <span id="473">473</span> |
| <span id="474">474</span> |
| <span id="475">475</span> |
| <span id="476">476</span> |
| <span id="477">477</span> |
| <span id="478">478</span> |
| <span id="479">479</span> |
| <span id="480">480</span> |
| <span id="481">481</span> |
| <span id="482">482</span> |
| <span id="483">483</span> |
| <span id="484">484</span> |
| <span id="485">485</span> |
| <span id="486">486</span> |
| <span id="487">487</span> |
| <span id="488">488</span> |
| <span id="489">489</span> |
| <span id="490">490</span> |
| <span id="491">491</span> |
| <span id="492">492</span> |
| <span id="493">493</span> |
| <span id="494">494</span> |
| <span id="495">495</span> |
| <span id="496">496</span> |
| <span id="497">497</span> |
| <span id="498">498</span> |
| <span id="499">499</span> |
| <span id="500">500</span> |
| <span id="501">501</span> |
| <span id="502">502</span> |
| <span id="503">503</span> |
| <span id="504">504</span> |
| <span id="505">505</span> |
| <span id="506">506</span> |
| <span id="507">507</span> |
| <span id="508">508</span> |
| <span id="509">509</span> |
| <span id="510">510</span> |
| <span id="511">511</span> |
| <span id="512">512</span> |
| <span id="513">513</span> |
| <span id="514">514</span> |
| <span id="515">515</span> |
| <span id="516">516</span> |
| <span id="517">517</span> |
| <span id="518">518</span> |
| <span id="519">519</span> |
| <span id="520">520</span> |
| <span id="521">521</span> |
| <span id="522">522</span> |
| <span id="523">523</span> |
| <span id="524">524</span> |
| <span id="525">525</span> |
| <span id="526">526</span> |
| <span id="527">527</span> |
| <span id="528">528</span> |
| <span id="529">529</span> |
| <span id="530">530</span> |
| <span id="531">531</span> |
| <span id="532">532</span> |
| <span id="533">533</span> |
| <span id="534">534</span> |
| <span id="535">535</span> |
| <span id="536">536</span> |
| <span id="537">537</span> |
| <span id="538">538</span> |
| <span id="539">539</span> |
| <span id="540">540</span> |
| <span id="541">541</span> |
| <span id="542">542</span> |
| <span id="543">543</span> |
| <span id="544">544</span> |
| <span id="545">545</span> |
| <span id="546">546</span> |
| <span id="547">547</span> |
| <span id="548">548</span> |
| <span id="549">549</span> |
| <span id="550">550</span> |
| <span id="551">551</span> |
| <span id="552">552</span> |
| <span id="553">553</span> |
| <span id="554">554</span> |
| <span id="555">555</span> |
| <span id="556">556</span> |
| <span id="557">557</span> |
| <span id="558">558</span> |
| <span id="559">559</span> |
| <span id="560">560</span> |
| <span id="561">561</span> |
| <span id="562">562</span> |
| <span id="563">563</span> |
| <span id="564">564</span> |
| <span id="565">565</span> |
| <span id="566">566</span> |
| <span id="567">567</span> |
| <span id="568">568</span> |
| <span id="569">569</span> |
| <span id="570">570</span> |
| <span id="571">571</span> |
| <span id="572">572</span> |
| <span id="573">573</span> |
| <span id="574">574</span> |
| <span id="575">575</span> |
| <span id="576">576</span> |
| <span id="577">577</span> |
| <span id="578">578</span> |
| <span id="579">579</span> |
| <span id="580">580</span> |
| <span id="581">581</span> |
| <span id="582">582</span> |
| <span id="583">583</span> |
| <span id="584">584</span> |
| <span id="585">585</span> |
| <span id="586">586</span> |
| <span id="587">587</span> |
| <span id="588">588</span> |
| <span id="589">589</span> |
| <span id="590">590</span> |
| <span id="591">591</span> |
| <span id="592">592</span> |
| <span id="593">593</span> |
| <span id="594">594</span> |
| <span id="595">595</span> |
| <span id="596">596</span> |
| <span id="597">597</span> |
| <span id="598">598</span> |
| <span id="599">599</span> |
| <span id="600">600</span> |
| <span id="601">601</span> |
| <span id="602">602</span> |
| <span id="603">603</span> |
| <span id="604">604</span> |
| <span id="605">605</span> |
| <span id="606">606</span> |
| <span id="607">607</span> |
| <span id="608">608</span> |
| <span id="609">609</span> |
| <span id="610">610</span> |
| <span id="611">611</span> |
| <span id="612">612</span> |
| <span id="613">613</span> |
| <span id="614">614</span> |
| <span id="615">615</span> |
| <span id="616">616</span> |
| <span id="617">617</span> |
| <span id="618">618</span> |
| <span id="619">619</span> |
| <span id="620">620</span> |
| <span id="621">621</span> |
| <span id="622">622</span> |
| <span id="623">623</span> |
| <span id="624">624</span> |
| <span id="625">625</span> |
| <span id="626">626</span> |
| <span id="627">627</span> |
| <span id="628">628</span> |
| <span id="629">629</span> |
| <span id="630">630</span> |
| <span id="631">631</span> |
| <span id="632">632</span> |
| <span id="633">633</span> |
| <span id="634">634</span> |
| <span id="635">635</span> |
| <span id="636">636</span> |
| <span id="637">637</span> |
| <span id="638">638</span> |
| <span id="639">639</span> |
| <span id="640">640</span> |
| <span id="641">641</span> |
| <span id="642">642</span> |
| <span id="643">643</span> |
| <span id="644">644</span> |
| <span id="645">645</span> |
| <span id="646">646</span> |
| <span id="647">647</span> |
| <span id="648">648</span> |
| <span id="649">649</span> |
| <span id="650">650</span> |
| <span id="651">651</span> |
| <span id="652">652</span> |
| <span id="653">653</span> |
| <span id="654">654</span> |
| <span id="655">655</span> |
| <span id="656">656</span> |
| <span id="657">657</span> |
| <span id="658">658</span> |
| <span id="659">659</span> |
| <span id="660">660</span> |
| <span id="661">661</span> |
| <span id="662">662</span> |
| <span id="663">663</span> |
| <span id="664">664</span> |
| <span id="665">665</span> |
| <span id="666">666</span> |
| <span id="667">667</span> |
| <span id="668">668</span> |
| <span id="669">669</span> |
| <span id="670">670</span> |
| <span id="671">671</span> |
| <span id="672">672</span> |
| <span id="673">673</span> |
| <span id="674">674</span> |
| <span id="675">675</span> |
| <span id="676">676</span> |
| <span id="677">677</span> |
| <span id="678">678</span> |
| <span id="679">679</span> |
| <span id="680">680</span> |
| <span id="681">681</span> |
| <span id="682">682</span> |
| <span id="683">683</span> |
| <span id="684">684</span> |
| <span id="685">685</span> |
| <span id="686">686</span> |
| <span id="687">687</span> |
| <span id="688">688</span> |
| <span id="689">689</span> |
| <span id="690">690</span> |
| <span id="691">691</span> |
| <span id="692">692</span> |
| <span id="693">693</span> |
| <span id="694">694</span> |
| <span id="695">695</span> |
| <span id="696">696</span> |
| <span id="697">697</span> |
| <span id="698">698</span> |
| <span id="699">699</span> |
| <span id="700">700</span> |
| <span id="701">701</span> |
| <span id="702">702</span> |
| <span id="703">703</span> |
| <span id="704">704</span> |
| <span id="705">705</span> |
| <span id="706">706</span> |
| <span id="707">707</span> |
| <span id="708">708</span> |
| <span id="709">709</span> |
| <span id="710">710</span> |
| <span id="711">711</span> |
| <span id="712">712</span> |
| <span id="713">713</span> |
| <span id="714">714</span> |
| <span id="715">715</span> |
| <span id="716">716</span> |
| <span id="717">717</span> |
| <span id="718">718</span> |
| <span id="719">719</span> |
| <span id="720">720</span> |
| <span id="721">721</span> |
| <span id="722">722</span> |
| <span id="723">723</span> |
| <span id="724">724</span> |
| <span id="725">725</span> |
| <span id="726">726</span> |
| <span id="727">727</span> |
| <span id="728">728</span> |
| <span id="729">729</span> |
| <span id="730">730</span> |
| <span id="731">731</span> |
| <span id="732">732</span> |
| <span id="733">733</span> |
| <span id="734">734</span> |
| <span id="735">735</span> |
| <span id="736">736</span> |
| <span id="737">737</span> |
| <span id="738">738</span> |
| <span id="739">739</span> |
| <span id="740">740</span> |
| <span id="741">741</span> |
| <span id="742">742</span> |
| <span id="743">743</span> |
| <span id="744">744</span> |
| <span id="745">745</span> |
| <span id="746">746</span> |
| <span id="747">747</span> |
| <span id="748">748</span> |
| <span id="749">749</span> |
| <span id="750">750</span> |
| <span id="751">751</span> |
| <span id="752">752</span> |
| <span id="753">753</span> |
| <span id="754">754</span> |
| <span id="755">755</span> |
| <span id="756">756</span> |
| <span id="757">757</span> |
| <span id="758">758</span> |
| <span id="759">759</span> |
| <span id="760">760</span> |
| <span id="761">761</span> |
| <span id="762">762</span> |
| <span id="763">763</span> |
| <span id="764">764</span> |
| <span id="765">765</span> |
| <span id="766">766</span> |
| <span id="767">767</span> |
| <span id="768">768</span> |
| <span id="769">769</span> |
| <span id="770">770</span> |
| <span id="771">771</span> |
| <span id="772">772</span> |
| <span id="773">773</span> |
| </pre><pre class="rust "> |
| <span class="comment">// Copyright 2016 Amanieu d'Antras</span> |
| <span class="comment">//</span> |
| <span class="comment">// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or</span> |
| <span class="comment">// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or</span> |
| <span class="comment">// http://opensource.org/licenses/MIT>, at your option. This file may not be</span> |
| <span class="comment">// copied, modified, or distributed except according to those terms.</span> |
| |
| <span class="doccomment">//! Per-object thread-local storage</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! This library provides the `ThreadLocal` type which allows a separate copy of</span> |
| <span class="doccomment">//! an object to be used for each thread. This allows for per-object</span> |
| <span class="doccomment">//! thread-local storage, unlike the standard library's `thread_local!` macro</span> |
| <span class="doccomment">//! which only allows static thread-local storage.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Per-thread objects are not destroyed when a thread exits. Instead, objects</span> |
| <span class="doccomment">//! are only destroyed when the `ThreadLocal` containing them is destroyed.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! You can also iterate over the thread-local values of all thread in a</span> |
| <span class="doccomment">//! `ThreadLocal` object using the `iter_mut` and `into_iter` methods. This can</span> |
| <span class="doccomment">//! only be done if you have mutable access to the `ThreadLocal` object, which</span> |
| <span class="doccomment">//! guarantees that you are the only thread currently accessing it.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! A `CachedThreadLocal` type is also provided which wraps a `ThreadLocal` but</span> |
| <span class="doccomment">//! also uses a special fast path for the first thread that writes into it. The</span> |
| <span class="doccomment">//! fast path has very low overhead (<1ns per access) while keeping the same</span> |
| <span class="doccomment">//! performance as `ThreadLocal` for other threads.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Note that since thread IDs are recycled when a thread exits, it is possible</span> |
| <span class="doccomment">//! for one thread to retrieve the object of another thread. Since this can only</span> |
| <span class="doccomment">//! occur after a thread has exited this does not lead to any race conditions.</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! # Examples</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Basic usage of `ThreadLocal`:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```rust</span> |
| <span class="doccomment">//! use thread_local::ThreadLocal;</span> |
| <span class="doccomment">//! let tls: ThreadLocal<u32> = ThreadLocal::new();</span> |
| <span class="doccomment">//! assert_eq!(tls.get(), None);</span> |
| <span class="doccomment">//! assert_eq!(tls.get_or(|| Box::new(5)), &5);</span> |
| <span class="doccomment">//! assert_eq!(tls.get(), Some(&5));</span> |
| <span class="doccomment">//! ```</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! Combining thread-local values into a single result:</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! ```rust</span> |
| <span class="doccomment">//! use thread_local::ThreadLocal;</span> |
| <span class="doccomment">//! use std::sync::Arc;</span> |
| <span class="doccomment">//! use std::cell::Cell;</span> |
| <span class="doccomment">//! use std::thread;</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! let tls = Arc::new(ThreadLocal::new());</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! // Create a bunch of threads to do stuff</span> |
| <span class="doccomment">//! for _ in 0..5 {</span> |
| <span class="doccomment">//! let tls2 = tls.clone();</span> |
| <span class="doccomment">//! thread::spawn(move || {</span> |
| <span class="doccomment">//! // Increment a counter to count some event...</span> |
| <span class="doccomment">//! let cell = tls2.get_or(|| Box::new(Cell::new(0)));</span> |
| <span class="doccomment">//! cell.set(cell.get() + 1);</span> |
| <span class="doccomment">//! }).join().unwrap();</span> |
| <span class="doccomment">//! }</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! // Once all threads are done, collect the counter values and return the</span> |
| <span class="doccomment">//! // sum of all thread-local counter values.</span> |
| <span class="doccomment">//! let tls = Arc::try_unwrap(tls).unwrap();</span> |
| <span class="doccomment">//! let total = tls.into_iter().fold(0, |x, y| x + y.get());</span> |
| <span class="doccomment">//! assert_eq!(total, 5);</span> |
| <span class="doccomment">//! ```</span> |
| |
| <span class="attribute">#<span class="op">!</span>[<span class="ident">warn</span>(<span class="ident">missing_docs</span>)]</span> |
| |
| <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">thread_id</span>; |
| |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">atomic</span>::{<span class="ident">AtomicPtr</span>, <span class="ident">AtomicUsize</span>, <span class="ident">Ordering</span>}; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Mutex</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">marker</span>::<span class="ident">PhantomData</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cell</span>::<span class="ident">UnsafeCell</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">mem</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">iter</span>::<span class="ident">Chain</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">option</span>::<span class="ident">IntoIter</span> <span class="kw">as</span> <span class="ident">OptionIter</span>; |
| |
| <span class="comment">// Option::unchecked_unwrap</span> |
| <span class="kw">trait</span> <span class="ident">UncheckedOptionExt</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">unchecked_unwrap</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">T</span>; |
| } |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">unreachable</span>() <span class="op">-></span> <span class="op">!</span> { |
| <span class="kw">enum</span> <span class="ident">Void</span> {} |
| <span class="kw">match</span> <span class="kw-2">*</span>(<span class="number">1</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">Void</span>) {} |
| } |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">UncheckedOptionExt</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="kw">for</span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">unchecked_unwrap</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">T</span> { |
| <span class="kw">match</span> <span class="self">self</span> { |
| <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=></span> <span class="ident">x</span>, |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="ident">unreachable</span>(), |
| } |
| } |
| } |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">UncheckedOptionExt</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="kw">for</span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span> { |
| <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">unchecked_unwrap</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">T</span> { |
| <span class="kw">match</span> <span class="self">self</span> { |
| <span class="prelude-val">Ok</span>(<span class="ident">x</span>) <span class="op">=></span> <span class="ident">x</span>, |
| <span class="prelude-val">Err</span>(_) <span class="op">=></span> <span class="ident">unreachable</span>(), |
| } |
| } |
| } |
| |
| <span class="comment">// BoxExt::{from_raw,into_raw}</span> |
| <span class="kw">trait</span> <span class="ident">BoxExt</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">into_raw</span>(<span class="ident">b</span>: <span class="self">Self</span>) <span class="op">-></span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">T</span>; |
| <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">from_raw</span>(<span class="ident">raw</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">T</span>) <span class="op">-></span> <span class="self">Self</span>; |
| } |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span><span class="op">></span> <span class="ident">BoxExt</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">into_raw</span>(<span class="kw-2">mut</span> <span class="ident">b</span>: <span class="self">Self</span>) <span class="op">-></span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">T</span> { |
| <span class="kw">let</span> <span class="ident">ptr</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">T</span> <span class="op">=</span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">b</span>; |
| <span class="ident">mem</span>::<span class="ident">forget</span>(<span class="ident">b</span>); |
| <span class="ident">ptr</span> |
| } |
| <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">from_raw</span>(<span class="ident">raw</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">T</span>) <span class="op">-></span> <span class="self">Self</span> { |
| <span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="ident">raw</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Thread-local variable wrapper</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// See the [module-level documentation](index.html) for more.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> { |
| <span class="comment">// Pointer to the current top-level hash table</span> |
| <span class="ident">table</span>: <span class="ident">AtomicPtr</span><span class="op"><</span><span class="ident">Table</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span>, |
| |
| <span class="comment">// Lock used to guard against concurrent modifications. This is only taken</span> |
| <span class="comment">// while writing to the table, not when reading from it. This also guards</span> |
| <span class="comment">// the counter for the total number of values in the hash table.</span> |
| <span class="ident">lock</span>: <span class="ident">Mutex</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>, |
| |
| <span class="comment">// PhantomData to indicate that we logically own T</span> |
| <span class="ident">marker</span>: <span class="ident">PhantomData</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, |
| } |
| |
| <span class="kw">struct</span> <span class="ident">Table</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> { |
| <span class="comment">// Hash entries for the table</span> |
| <span class="ident">entries</span>: <span class="ident">Box</span><span class="op"><</span>[<span class="ident">TableEntry</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>]<span class="op">></span>, |
| |
| <span class="comment">// Number of bits used for the hash function</span> |
| <span class="ident">hash_bits</span>: <span class="ident">usize</span>, |
| |
| <span class="comment">// Previous table, half the size of the current one</span> |
| <span class="ident">prev</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">Table</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span><span class="op">></span>, |
| } |
| |
| <span class="kw">struct</span> <span class="ident">TableEntry</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> { |
| <span class="comment">// Current owner of this entry, or 0 if this is an empty entry</span> |
| <span class="ident">owner</span>: <span class="ident">AtomicUsize</span>, |
| |
| <span class="comment">// The object associated with this entry. This is only ever accessed by the</span> |
| <span class="comment">// owner of the entry.</span> |
| <span class="ident">data</span>: <span class="ident">UnsafeCell</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span><span class="op">></span>, |
| } |
| |
| <span class="comment">// ThreadLocal is always Sync, even if T isn't</span> |
| <span class="kw">unsafe</span> <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">Sync</span> <span class="kw">for</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {} |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="ident">ThreadLocal</span>::<span class="ident">new</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { |
| <span class="kw">unsafe</span> { |
| <span class="kw">let</span> _: <span class="ident">Box</span><span class="op"><</span><span class="ident">Table</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span> <span class="op">=</span> <span class="ident">BoxExt</span>::<span class="ident">from_raw</span>(<span class="self">self</span>.<span class="ident">table</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>)); |
| } |
| } |
| } |
| |
| <span class="comment">// Implementation of Clone for TableEntry, needed to make vec![] work</span> |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">Clone</span> <span class="kw">for</span> <span class="ident">TableEntry</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">clone</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">TableEntry</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="ident">TableEntry</span> { |
| <span class="ident">owner</span>: <span class="ident">AtomicUsize</span>::<span class="ident">new</span>(<span class="number">0</span>), |
| <span class="ident">data</span>: <span class="ident">UnsafeCell</span>::<span class="ident">new</span>(<span class="prelude-val">None</span>), |
| } |
| } |
| } |
| |
| <span class="comment">// Hash function for the thread id</span> |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_pointer_width</span> <span class="op">=</span> <span class="string">"32"</span>)]</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">hash</span>(<span class="ident">id</span>: <span class="ident">usize</span>, <span class="ident">bits</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="ident">id</span>.<span class="ident">wrapping_mul</span>(<span class="number">0x9E3779B9</span>) <span class="op">>></span> (<span class="number">32</span> <span class="op">-</span> <span class="ident">bits</span>) |
| } |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_pointer_width</span> <span class="op">=</span> <span class="string">"64"</span>)]</span> |
| <span class="attribute">#[<span class="ident">inline</span>]</span> |
| <span class="kw">fn</span> <span class="ident">hash</span>(<span class="ident">id</span>: <span class="ident">usize</span>, <span class="ident">bits</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="ident">id</span>.<span class="ident">wrapping_mul</span>(<span class="number">0x9E3779B97F4A7C15</span>) <span class="op">>></span> (<span class="number">64</span> <span class="op">-</span> <span class="ident">bits</span>) |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="doccomment">/// Creates a new empty `ThreadLocal`.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">entry</span> <span class="op">=</span> <span class="ident">TableEntry</span> { |
| <span class="ident">owner</span>: <span class="ident">AtomicUsize</span>::<span class="ident">new</span>(<span class="number">0</span>), |
| <span class="ident">data</span>: <span class="ident">UnsafeCell</span>::<span class="ident">new</span>(<span class="prelude-val">None</span>), |
| }; |
| <span class="kw">let</span> <span class="ident">table</span> <span class="op">=</span> <span class="ident">Table</span> { |
| <span class="ident">entries</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">entry</span>; <span class="number">2</span>].<span class="ident">into_boxed_slice</span>(), |
| <span class="ident">hash_bits</span>: <span class="number">1</span>, |
| <span class="ident">prev</span>: <span class="prelude-val">None</span>, |
| }; |
| <span class="ident">ThreadLocal</span> { |
| <span class="ident">table</span>: <span class="ident">AtomicPtr</span>::<span class="ident">new</span>(<span class="ident">BoxExt</span>::<span class="ident">into_raw</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">table</span>))), |
| <span class="ident">lock</span>: <span class="ident">Mutex</span>::<span class="ident">new</span>(<span class="number">0</span>), |
| <span class="ident">marker</span>: <span class="ident">PhantomData</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Returns the element for the current thread, if it exists.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">id</span> <span class="op">=</span> <span class="ident">thread_id</span>::<span class="ident">get</span>(); |
| <span class="self">self</span>.<span class="ident">get_fast</span>(<span class="ident">id</span>) |
| } |
| |
| <span class="doccomment">/// Returns the element for the current thread, or creates it if it doesn't</span> |
| <span class="doccomment">/// exist.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_or</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">create</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">T</span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> |
| { |
| <span class="kw">unsafe</span> { <span class="self">self</span>.<span class="ident">get_or_try</span>(<span class="op">||</span> <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, ()<span class="op">></span>(<span class="ident">create</span>())).<span class="ident">unchecked_unwrap</span>() } |
| } |
| |
| <span class="doccomment">/// Returns the element for the current thread, or creates it if it doesn't</span> |
| <span class="doccomment">/// exist. If `create` fails, that error is returned and no element is</span> |
| <span class="doccomment">/// added.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_or_try</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">E</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">create</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, <span class="ident">E</span><span class="op">></span> |
| { |
| <span class="kw">let</span> <span class="ident">id</span> <span class="op">=</span> <span class="ident">thread_id</span>::<span class="ident">get</span>(); |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">get_fast</span>(<span class="ident">id</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">x</span>), |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">insert</span>(<span class="ident">id</span>, <span class="macro">try</span><span class="macro">!</span>(<span class="ident">create</span>()), <span class="bool-val">true</span>)), |
| } |
| } |
| |
| <span class="comment">// Simple hash table lookup function</span> |
| <span class="kw">fn</span> <span class="ident">lookup</span>(<span class="ident">id</span>: <span class="ident">usize</span>, <span class="ident">table</span>: <span class="kw-2">&</span><span class="ident">Table</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">UnsafeCell</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span><span class="op">>></span> { |
| <span class="comment">// Because we use a Mutex to prevent concurrent modifications (but not</span> |
| <span class="comment">// reads) of the hash table, we can avoid any memory barriers here. No</span> |
| <span class="comment">// elements between our hash bucket and our value can have been modified</span> |
| <span class="comment">// since we inserted our thread-local value into the table.</span> |
| <span class="kw">for</span> <span class="ident">entry</span> <span class="kw">in</span> <span class="ident">table</span>.<span class="ident">entries</span>.<span class="ident">iter</span>().<span class="ident">cycle</span>().<span class="ident">skip</span>(<span class="ident">hash</span>(<span class="ident">id</span>, <span class="ident">table</span>.<span class="ident">hash_bits</span>)) { |
| <span class="kw">let</span> <span class="ident">owner</span> <span class="op">=</span> <span class="ident">entry</span>.<span class="ident">owner</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>); |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="ident">id</span> { |
| <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="ident">entry</span>.<span class="ident">data</span>); |
| } |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| } |
| <span class="macro">unreachable</span><span class="macro">!</span>(); |
| } |
| |
| <span class="comment">// Fast path: try to find our thread in the top-level hash table</span> |
| <span class="kw">fn</span> <span class="ident">get_fast</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">id</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">table</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="self">self</span>.<span class="ident">table</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>) }; |
| <span class="kw">match</span> <span class="self">Self</span>::<span class="ident">lookup</span>(<span class="ident">id</span>, <span class="ident">table</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=></span> <span class="kw">unsafe</span> { <span class="prelude-val">Some</span>((<span class="kw-2">*</span><span class="ident">x</span>.<span class="ident">get</span>()).<span class="ident">as_ref</span>().<span class="ident">unchecked_unwrap</span>()) }, |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="self">self</span>.<span class="ident">get_slow</span>(<span class="ident">id</span>, <span class="ident">table</span>), |
| } |
| } |
| |
| <span class="comment">// Slow path: try to find our thread in the other hash tables, and then</span> |
| <span class="comment">// move it to the top-level hash table.</span> |
| <span class="attribute">#[<span class="ident">cold</span>]</span> |
| <span class="kw">fn</span> <span class="ident">get_slow</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">id</span>: <span class="ident">usize</span>, <span class="ident">table_top</span>: <span class="kw-2">&</span><span class="ident">Table</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">current</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">table_top</span>.<span class="ident">prev</span>; |
| <span class="kw">while</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="ident">table</span>) <span class="op">=</span> <span class="kw-2">*</span><span class="ident">current</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=</span> <span class="self">Self</span>::<span class="ident">lookup</span>(<span class="ident">id</span>, <span class="ident">table</span>) { |
| <span class="kw">let</span> <span class="ident">data</span> <span class="op">=</span> <span class="kw">unsafe</span> { (<span class="kw-2">*</span><span class="ident">x</span>.<span class="ident">get</span>()).<span class="ident">take</span>().<span class="ident">unchecked_unwrap</span>() }; |
| <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">insert</span>(<span class="ident">id</span>, <span class="ident">data</span>, <span class="bool-val">false</span>)); |
| } |
| <span class="ident">current</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">table</span>.<span class="ident">prev</span>; |
| } |
| <span class="prelude-val">None</span> |
| } |
| |
| <span class="attribute">#[<span class="ident">cold</span>]</span> |
| <span class="kw">fn</span> <span class="ident">insert</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">id</span>: <span class="ident">usize</span>, <span class="ident">data</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, <span class="ident">new</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">T</span> { |
| <span class="comment">// Lock the Mutex to ensure only a single thread is modify the hash</span> |
| <span class="comment">// table at once.</span> |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">count</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">lock</span>.<span class="ident">lock</span>().<span class="ident">unwrap</span>(); |
| <span class="kw">if</span> <span class="ident">new</span> { |
| <span class="kw-2">*</span><span class="ident">count</span> <span class="op">+=</span> <span class="number">1</span>; |
| } |
| <span class="kw">let</span> <span class="ident">table_raw</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">table</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>); |
| <span class="kw">let</span> <span class="ident">table</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">table_raw</span> }; |
| |
| <span class="comment">// If the current top-level hash table is more than 75% full, add a new</span> |
| <span class="comment">// level with 2x the capacity. Elements will be moved up to the new top</span> |
| <span class="comment">// level table as they are accessed.</span> |
| <span class="kw">let</span> <span class="ident">table</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw-2">*</span><span class="ident">count</span> <span class="op">></span> <span class="ident">table</span>.<span class="ident">entries</span>.<span class="ident">len</span>() <span class="op">*</span> <span class="number">3</span> <span class="op">/</span> <span class="number">4</span> { |
| <span class="kw">let</span> <span class="ident">entry</span> <span class="op">=</span> <span class="ident">TableEntry</span> { |
| <span class="ident">owner</span>: <span class="ident">AtomicUsize</span>::<span class="ident">new</span>(<span class="number">0</span>), |
| <span class="ident">data</span>: <span class="ident">UnsafeCell</span>::<span class="ident">new</span>(<span class="prelude-val">None</span>), |
| }; |
| <span class="kw">let</span> <span class="ident">new_table</span> <span class="op">=</span> <span class="ident">BoxExt</span>::<span class="ident">into_raw</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">Table</span> { |
| <span class="ident">entries</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">entry</span>; <span class="ident">table</span>.<span class="ident">entries</span>.<span class="ident">len</span>() <span class="op">*</span> <span class="number">2</span>].<span class="ident">into_boxed_slice</span>(), |
| <span class="ident">hash_bits</span>: <span class="ident">table</span>.<span class="ident">hash_bits</span> <span class="op">+</span> <span class="number">1</span>, |
| <span class="ident">prev</span>: <span class="kw">unsafe</span> { <span class="prelude-val">Some</span>(<span class="ident">BoxExt</span>::<span class="ident">from_raw</span>(<span class="ident">table_raw</span>)) }, |
| })); |
| <span class="self">self</span>.<span class="ident">table</span>.<span class="ident">store</span>(<span class="ident">new_table</span>, <span class="ident">Ordering</span>::<span class="ident">Release</span>); |
| <span class="kw">unsafe</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="ident">new_table</span> } |
| } <span class="kw">else</span> { |
| <span class="ident">table</span> |
| }; |
| |
| <span class="comment">// Insert the new element into the top-level hash table</span> |
| <span class="kw">for</span> <span class="ident">entry</span> <span class="kw">in</span> <span class="ident">table</span>.<span class="ident">entries</span>.<span class="ident">iter</span>().<span class="ident">cycle</span>().<span class="ident">skip</span>(<span class="ident">hash</span>(<span class="ident">id</span>, <span class="ident">table</span>.<span class="ident">hash_bits</span>)) { |
| <span class="kw">let</span> <span class="ident">owner</span> <span class="op">=</span> <span class="ident">entry</span>.<span class="ident">owner</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>); |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">unsafe</span> { |
| <span class="ident">entry</span>.<span class="ident">owner</span>.<span class="ident">store</span>(<span class="ident">id</span>, <span class="ident">Ordering</span>::<span class="ident">Relaxed</span>); |
| <span class="kw-2">*</span><span class="ident">entry</span>.<span class="ident">data</span>.<span class="ident">get</span>() <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">data</span>); |
| <span class="kw">return</span> (<span class="kw-2">*</span><span class="ident">entry</span>.<span class="ident">data</span>.<span class="ident">get</span>()).<span class="ident">as_ref</span>().<span class="ident">unchecked_unwrap</span>(); |
| } |
| } |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="ident">id</span> { |
| <span class="comment">// This can happen if create() inserted a value into this</span> |
| <span class="comment">// ThreadLocal between our calls to get_fast() and insert(). We</span> |
| <span class="comment">// just return the existing value and drop the newly-allocated</span> |
| <span class="comment">// Box.</span> |
| <span class="kw">unsafe</span> { |
| <span class="kw">return</span> (<span class="kw-2">*</span><span class="ident">entry</span>.<span class="ident">data</span>.<span class="ident">get</span>()).<span class="ident">as_ref</span>().<span class="ident">unchecked_unwrap</span>(); |
| } |
| } |
| } |
| <span class="macro">unreachable</span><span class="macro">!</span>(); |
| } |
| |
| <span class="doccomment">/// Returns a mutable iterator over the local values of all threads.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Since this call borrows the `ThreadLocal` mutably, this operation can</span> |
| <span class="doccomment">/// be done safely---the mutable borrow statically guarantees no other</span> |
| <span class="doccomment">/// threads are currently accessing their associated values.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">iter_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">IterMut</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">raw</span> <span class="op">=</span> <span class="ident">RawIter</span> { |
| <span class="ident">remaining</span>: <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">lock</span>.<span class="ident">lock</span>().<span class="ident">unwrap</span>(), |
| <span class="ident">index</span>: <span class="number">0</span>, |
| <span class="ident">table</span>: <span class="self">self</span>.<span class="ident">table</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>), |
| }; |
| <span class="ident">IterMut</span> { |
| <span class="ident">raw</span>: <span class="ident">raw</span>, |
| <span class="ident">marker</span>: <span class="ident">PhantomData</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Removes all thread-specific values from the `ThreadLocal`, effectively</span> |
| <span class="doccomment">/// reseting it to its original state.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Since this call borrows the `ThreadLocal` mutably, this operation can</span> |
| <span class="doccomment">/// be done safely---the mutable borrow statically guarantees no other</span> |
| <span class="doccomment">/// threads are currently accessing their associated values.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { |
| <span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="ident">ThreadLocal</span>::<span class="ident">new</span>(); |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">IntoIterator</span> <span class="kw">for</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| <span class="kw">type</span> <span class="ident">IntoIter</span> <span class="op">=</span> <span class="ident">IntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| |
| <span class="kw">fn</span> <span class="ident">into_iter</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">IntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">raw</span> <span class="op">=</span> <span class="ident">RawIter</span> { |
| <span class="ident">remaining</span>: <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">lock</span>.<span class="ident">lock</span>().<span class="ident">unwrap</span>(), |
| <span class="ident">index</span>: <span class="number">0</span>, |
| <span class="ident">table</span>: <span class="self">self</span>.<span class="ident">table</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>), |
| }; |
| <span class="ident">IntoIter</span> { |
| <span class="ident">raw</span>: <span class="ident">raw</span>, |
| <span class="ident">_thread_local</span>: <span class="self">self</span>, |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span> <span class="ident">IntoIterator</span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| <span class="kw">type</span> <span class="ident">IntoIter</span> <span class="op">=</span> <span class="ident">IterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span>; |
| |
| <span class="kw">fn</span> <span class="ident">into_iter</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">IterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">iter_mut</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Default</span><span class="op">></span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="doccomment">/// Returns the element for the current thread, or creates a default one if</span> |
| <span class="doccomment">/// it doesn't exist.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_default</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">T</span> { |
| <span class="self">self</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">T</span>::<span class="ident">default</span>())) |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="ident">fmt</span>::<span class="ident">Debug</span><span class="op">></span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> { |
| <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">"ThreadLocal {{ local_data: {:?} }}"</span>, <span class="self">self</span>.<span class="ident">get</span>()) |
| } |
| } |
| |
| <span class="kw">struct</span> <span class="ident">RawIter</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> { |
| <span class="ident">remaining</span>: <span class="ident">usize</span>, |
| <span class="ident">index</span>: <span class="ident">usize</span>, |
| <span class="ident">table</span>: <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">Table</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">RawIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">next</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">*</span><span class="kw-2">mut</span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">remaining</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| |
| <span class="kw">loop</span> { |
| <span class="kw">let</span> <span class="ident">entries</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="kw-2">&</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">table</span>).<span class="ident">entries</span>[..] }; |
| <span class="kw">while</span> <span class="self">self</span>.<span class="ident">index</span> <span class="op"><</span> <span class="ident">entries</span>.<span class="ident">len</span>() { |
| <span class="kw">let</span> <span class="ident">val</span> <span class="op">=</span> <span class="ident">entries</span>[<span class="self">self</span>.<span class="ident">index</span>].<span class="ident">data</span>.<span class="ident">get</span>(); |
| <span class="self">self</span>.<span class="ident">index</span> <span class="op">+=</span> <span class="number">1</span>; |
| <span class="kw">if</span> <span class="kw">unsafe</span> { (<span class="kw-2">*</span><span class="ident">val</span>).<span class="ident">is_some</span>() } { |
| <span class="self">self</span>.<span class="ident">remaining</span> <span class="op">-=</span> <span class="number">1</span>; |
| <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">val</span>); |
| } |
| } |
| <span class="self">self</span>.<span class="ident">index</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="self">self</span>.<span class="ident">table</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="kw-2">&</span><span class="kw-2">*</span><span class="kw-2">*</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">table</span>).<span class="ident">prev</span>.<span class="ident">as_ref</span>().<span class="ident">unchecked_unwrap</span>() }; |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Mutable iterator over the contents of a `ThreadLocal`.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">IterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span> { |
| <span class="ident">raw</span>: <span class="ident">RawIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, |
| <span class="ident">marker</span>: <span class="ident">PhantomData</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span>, |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span> <span class="ident">Iterator</span> <span class="kw">for</span> <span class="ident">IterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| |
| <span class="kw">fn</span> <span class="ident">next</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span> { |
| <span class="self">self</span>.<span class="ident">raw</span>.<span class="ident">next</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="kw">unsafe</span> { (<span class="kw-2">*</span><span class="ident">x</span>).<span class="ident">as_mut</span>().<span class="ident">unchecked_unwrap</span>() }) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">size_hint</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> (<span class="ident">usize</span>, <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>) { |
| (<span class="self">self</span>.<span class="ident">raw</span>.<span class="ident">remaining</span>, <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">raw</span>.<span class="ident">remaining</span>)) |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span> <span class="ident">ExactSizeIterator</span> <span class="kw">for</span> <span class="ident">IterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span> {} |
| |
| <span class="doccomment">/// An iterator that moves out of a `ThreadLocal`.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">IntoIter</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> { |
| <span class="ident">raw</span>: <span class="ident">RawIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, |
| <span class="ident">_thread_local</span>: <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">Iterator</span> <span class="kw">for</span> <span class="ident">IntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| |
| <span class="kw">fn</span> <span class="ident">next</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span> { |
| <span class="self">self</span>.<span class="ident">raw</span>.<span class="ident">next</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="kw">unsafe</span> { (<span class="kw-2">*</span><span class="ident">x</span>).<span class="ident">take</span>().<span class="ident">unchecked_unwrap</span>() }) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">size_hint</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> (<span class="ident">usize</span>, <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>) { |
| (<span class="self">self</span>.<span class="ident">raw</span>.<span class="ident">remaining</span>, <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">raw</span>.<span class="ident">remaining</span>)) |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">ExactSizeIterator</span> <span class="kw">for</span> <span class="ident">IntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {} |
| |
| <span class="doccomment">/// Wrapper around `ThreadLocal` which adds a fast path for a single thread.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This has the same API as `ThreadLocal`, but will register the first thread</span> |
| <span class="doccomment">/// that sets a value as its owner. All accesses by the owner will go through</span> |
| <span class="doccomment">/// a special fast path which is much faster than the normal `ThreadLocal` path.</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> { |
| <span class="ident">owner</span>: <span class="ident">AtomicUsize</span>, |
| <span class="ident">local</span>: <span class="ident">UnsafeCell</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span><span class="op">></span>, |
| <span class="ident">global</span>: <span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, |
| } |
| |
| <span class="comment">// CachedThreadLocal is always Sync, even if T isn't</span> |
| <span class="kw">unsafe</span> <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">Sync</span> <span class="kw">for</span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {} |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="ident">CachedThreadLocal</span>::<span class="ident">new</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="doccomment">/// Creates a new empty `CachedThreadLocal`.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="ident">CachedThreadLocal</span> { |
| <span class="ident">owner</span>: <span class="ident">AtomicUsize</span>::<span class="ident">new</span>(<span class="number">0</span>), |
| <span class="ident">local</span>: <span class="ident">UnsafeCell</span>::<span class="ident">new</span>(<span class="prelude-val">None</span>), |
| <span class="ident">global</span>: <span class="ident">ThreadLocal</span>::<span class="ident">new</span>(), |
| } |
| } |
| |
| <span class="doccomment">/// Returns the element for the current thread, if it exists.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">id</span> <span class="op">=</span> <span class="ident">thread_id</span>::<span class="ident">get</span>(); |
| <span class="kw">let</span> <span class="ident">owner</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">owner</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>); |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="ident">id</span> { |
| <span class="kw">return</span> <span class="kw">unsafe</span> { <span class="prelude-val">Some</span>((<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">local</span>.<span class="ident">get</span>()).<span class="ident">as_ref</span>().<span class="ident">unchecked_unwrap</span>()) }; |
| } |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="self">self</span>.<span class="ident">global</span>.<span class="ident">get_fast</span>(<span class="ident">id</span>) |
| } |
| |
| <span class="doccomment">/// Returns the element for the current thread, or creates it if it doesn't</span> |
| <span class="doccomment">/// exist.</span> |
| <span class="attribute">#[<span class="ident">inline</span>(<span class="ident">always</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_or</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">create</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">T</span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> |
| { |
| <span class="kw">unsafe</span> { <span class="self">self</span>.<span class="ident">get_or_try</span>(<span class="op">||</span> <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, ()<span class="op">></span>(<span class="ident">create</span>())).<span class="ident">unchecked_unwrap</span>() } |
| } |
| |
| <span class="doccomment">/// Returns the element for the current thread, or creates it if it doesn't</span> |
| <span class="doccomment">/// exist. If `create` fails, that error is returned and no element is</span> |
| <span class="doccomment">/// added.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_or_try</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">E</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">create</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, <span class="ident">E</span><span class="op">></span> |
| { |
| <span class="kw">let</span> <span class="ident">id</span> <span class="op">=</span> <span class="ident">thread_id</span>::<span class="ident">get</span>(); |
| <span class="kw">let</span> <span class="ident">owner</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">owner</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>); |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="ident">id</span> { |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="kw">unsafe</span> { (<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">local</span>.<span class="ident">get</span>()).<span class="ident">as_ref</span>().<span class="ident">unchecked_unwrap</span>() }); |
| } |
| <span class="self">self</span>.<span class="ident">get_or_try_slow</span>(<span class="ident">id</span>, <span class="ident">owner</span>, <span class="ident">create</span>) |
| } |
| |
| <span class="attribute">#[<span class="ident">cold</span>]</span> |
| <span class="attribute">#[<span class="ident">inline</span>(<span class="ident">never</span>)]</span> |
| <span class="kw">fn</span> <span class="ident">get_or_try_slow</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">E</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">id</span>: <span class="ident">usize</span>, <span class="ident">owner</span>: <span class="ident">usize</span>, <span class="ident">create</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, <span class="ident">E</span><span class="op">></span> |
| { |
| <span class="kw">if</span> <span class="ident">owner</span> <span class="op">==</span> <span class="number">0</span> <span class="op">&&</span> <span class="self">self</span>.<span class="ident">owner</span>.<span class="ident">compare_and_swap</span>(<span class="number">0</span>, <span class="ident">id</span>, <span class="ident">Ordering</span>::<span class="ident">Relaxed</span>) <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">unsafe</span> { |
| (<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">local</span>.<span class="ident">get</span>()) <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="ident">create</span>())); |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>((<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">local</span>.<span class="ident">get</span>()).<span class="ident">as_ref</span>().<span class="ident">unchecked_unwrap</span>()); |
| } |
| } |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">global</span>.<span class="ident">get_fast</span>(<span class="ident">id</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">x</span>), |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">global</span>.<span class="ident">insert</span>(<span class="ident">id</span>, <span class="macro">try</span><span class="macro">!</span>(<span class="ident">create</span>()), <span class="bool-val">true</span>)), |
| } |
| } |
| |
| <span class="doccomment">/// Returns a mutable iterator over the local values of all threads.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Since this call borrows the `ThreadLocal` mutably, this operation can</span> |
| <span class="doccomment">/// be done safely---the mutable borrow statically guarantees no other</span> |
| <span class="doccomment">/// threads are currently accessing their associated values.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">iter_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">CachedIterMut</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">unsafe</span> { (<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">local</span>.<span class="ident">get</span>()).<span class="ident">as_mut</span>().<span class="ident">into_iter</span>().<span class="ident">chain</span>(<span class="self">self</span>.<span class="ident">global</span>.<span class="ident">iter_mut</span>()) } |
| } |
| |
| <span class="doccomment">/// Removes all thread-specific values from the `ThreadLocal`, effectively</span> |
| <span class="doccomment">/// reseting it to its original state.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Since this call borrows the `ThreadLocal` mutably, this operation can</span> |
| <span class="doccomment">/// be done safely---the mutable borrow statically guarantees no other</span> |
| <span class="doccomment">/// threads are currently accessing their associated values.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { |
| <span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="ident">CachedThreadLocal</span>::<span class="ident">new</span>(); |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span><span class="op">></span> <span class="ident">IntoIterator</span> <span class="kw">for</span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| <span class="kw">type</span> <span class="ident">IntoIter</span> <span class="op">=</span> <span class="ident">CachedIntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| |
| <span class="kw">fn</span> <span class="ident">into_iter</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">CachedIntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">unsafe</span> { (<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">local</span>.<span class="ident">get</span>()).<span class="ident">take</span>().<span class="ident">into_iter</span>().<span class="ident">chain</span>(<span class="self">self</span>.<span class="ident">global</span>.<span class="ident">into_iter</span>()) } |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span> <span class="ident">IntoIterator</span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>; |
| <span class="kw">type</span> <span class="ident">IntoIter</span> <span class="op">=</span> <span class="ident">CachedIterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span>; |
| |
| <span class="kw">fn</span> <span class="ident">into_iter</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">CachedIterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">iter_mut</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Default</span><span class="op">></span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="doccomment">/// Returns the element for the current thread, or creates a default one if</span> |
| <span class="doccomment">/// it doesn't exist.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_default</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">T</span> { |
| <span class="self">self</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">T</span>::<span class="ident">default</span>())) |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="question-mark">?</span><span class="ident">Sized</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="ident">fmt</span>::<span class="ident">Debug</span><span class="op">></span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> { |
| <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">"ThreadLocal {{ local_data: {:?} }}"</span>, <span class="self">self</span>.<span class="ident">get</span>()) |
| } |
| } |
| |
| <span class="doccomment">/// Mutable iterator over the contents of a `CachedThreadLocal`.</span> |
| <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">CachedIterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">></span> <span class="op">=</span> <span class="ident">Chain</span><span class="op"><</span><span class="ident">OptionIter</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="kw-2">mut</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span>, <span class="ident">IterMut</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="ident">T</span><span class="op">>></span>; |
| |
| <span class="doccomment">/// An iterator that moves out of a `CachedThreadLocal`.</span> |
| <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">CachedIntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="op">=</span> <span class="ident">Chain</span><span class="op"><</span><span class="ident">OptionIter</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span>, <span class="ident">IntoIter</span><span class="op"><</span><span class="ident">T</span><span class="op">>></span>; |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="kw">mod</span> <span class="ident">tests</span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cell</span>::<span class="ident">RefCell</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Arc</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">atomic</span>::<span class="ident">AtomicUsize</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">atomic</span>::<span class="ident">Ordering</span>::<span class="ident">Relaxed</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">thread</span>; |
| <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">ThreadLocal</span>, <span class="ident">CachedThreadLocal</span>}; |
| |
| <span class="kw">fn</span> <span class="ident">make_create</span>() <span class="op">-></span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Fn</span>() <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Sync</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">count</span> <span class="op">=</span> <span class="ident">AtomicUsize</span>::<span class="ident">new</span>(<span class="number">0</span>); |
| <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="kw">move</span> <span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">count</span>.<span class="ident">fetch_add</span>(<span class="number">1</span>, <span class="ident">Relaxed</span>))) |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">same_thread</span>() { |
| <span class="kw">let</span> <span class="ident">create</span> <span class="op">=</span> <span class="ident">make_create</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">ThreadLocal</span>::<span class="ident">new</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"ThreadLocal { local_data: None }"</span>, <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="kw-2">&</span><span class="ident">tls</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"ThreadLocal { local_data: Some(0) }"</span>, <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="kw-2">&</span><span class="ident">tls</span>)); |
| <span class="ident">tls</span>.<span class="ident">clear</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls</span>.<span class="ident">get</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">same_thread_cached</span>() { |
| <span class="kw">let</span> <span class="ident">create</span> <span class="op">=</span> <span class="ident">make_create</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">CachedThreadLocal</span>::<span class="ident">new</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"ThreadLocal { local_data: None }"</span>, <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="kw-2">&</span><span class="ident">tls</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"ThreadLocal { local_data: Some(0) }"</span>, <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="kw-2">&</span><span class="ident">tls</span>)); |
| <span class="ident">tls</span>.<span class="ident">clear</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls</span>.<span class="ident">get</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">different_thread</span>() { |
| <span class="kw">let</span> <span class="ident">create</span> <span class="op">=</span> <span class="ident">make_create</span>(); |
| <span class="kw">let</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">ThreadLocal</span>::<span class="ident">new</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| |
| <span class="kw">let</span> <span class="ident">tls2</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">clone</span>(); |
| <span class="kw">let</span> <span class="ident">create2</span> <span class="op">=</span> <span class="ident">create</span>.<span class="ident">clone</span>(); |
| <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls2</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">1</span>, <span class="kw-2">*</span><span class="ident">tls2</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create2</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">1</span>), <span class="ident">tls2</span>.<span class="ident">get</span>()); |
| }) |
| .<span class="ident">join</span>() |
| .<span class="ident">unwrap</span>(); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">different_thread_cached</span>() { |
| <span class="kw">let</span> <span class="ident">create</span> <span class="op">=</span> <span class="ident">make_create</span>(); |
| <span class="kw">let</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">CachedThreadLocal</span>::<span class="ident">new</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| |
| <span class="kw">let</span> <span class="ident">tls2</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">clone</span>(); |
| <span class="kw">let</span> <span class="ident">create2</span> <span class="op">=</span> <span class="ident">create</span>.<span class="ident">clone</span>(); |
| <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">tls2</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">1</span>, <span class="kw-2">*</span><span class="ident">tls2</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create2</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">1</span>), <span class="ident">tls2</span>.<span class="ident">get</span>()); |
| }) |
| .<span class="ident">join</span>() |
| .<span class="ident">unwrap</span>(); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>), <span class="ident">tls</span>.<span class="ident">get</span>()); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="kw-2">*</span><span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">create</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">iter</span>() { |
| <span class="kw">let</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">ThreadLocal</span>::<span class="ident">new</span>()); |
| <span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="number">1</span>)); |
| |
| <span class="kw">let</span> <span class="ident">tls2</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">clone</span>(); |
| <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> { |
| <span class="ident">tls2</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="number">2</span>)); |
| <span class="kw">let</span> <span class="ident">tls3</span> <span class="op">=</span> <span class="ident">tls2</span>.<span class="ident">clone</span>(); |
| <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> { |
| <span class="ident">tls3</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="number">3</span>)); |
| }) |
| .<span class="ident">join</span>() |
| .<span class="ident">unwrap</span>(); |
| }) |
| .<span class="ident">join</span>() |
| .<span class="ident">unwrap</span>(); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">try_unwrap</span>(<span class="ident">tls</span>).<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">iter_mut</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">x</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">i32</span><span class="op">>></span>(); |
| <span class="ident">v</span>.<span class="ident">sort</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], <span class="ident">v</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">into_iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">x</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">i32</span><span class="op">>></span>(); |
| <span class="ident">v</span>.<span class="ident">sort</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], <span class="ident">v</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">iter_cached</span>() { |
| <span class="kw">let</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">CachedThreadLocal</span>::<span class="ident">new</span>()); |
| <span class="ident">tls</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="number">1</span>)); |
| |
| <span class="kw">let</span> <span class="ident">tls2</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">clone</span>(); |
| <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> { |
| <span class="ident">tls2</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="number">2</span>)); |
| <span class="kw">let</span> <span class="ident">tls3</span> <span class="op">=</span> <span class="ident">tls2</span>.<span class="ident">clone</span>(); |
| <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span> <span class="op">||</span> { |
| <span class="ident">tls3</span>.<span class="ident">get_or</span>(<span class="op">||</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="number">3</span>)); |
| }) |
| .<span class="ident">join</span>() |
| .<span class="ident">unwrap</span>(); |
| }) |
| .<span class="ident">join</span>() |
| .<span class="ident">unwrap</span>(); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">tls</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">try_unwrap</span>(<span class="ident">tls</span>).<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">iter_mut</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="kw-2">*</span><span class="kw-2">*</span><span class="ident">x</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">i32</span><span class="op">>></span>(); |
| <span class="ident">v</span>.<span class="ident">sort</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], <span class="ident">v</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">tls</span>.<span class="ident">into_iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">x</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">i32</span><span class="op">>></span>(); |
| <span class="ident">v</span>.<span class="ident">sort</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], <span class="ident">v</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">is_sync</span>() { |
| <span class="kw">fn</span> <span class="ident">foo</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Sync</span><span class="op">></span>() {} |
| <span class="ident">foo</span>::<span class="op"><</span><span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">String</span><span class="op">>></span>(); |
| <span class="ident">foo</span>::<span class="op"><</span><span class="ident">ThreadLocal</span><span class="op"><</span><span class="ident">RefCell</span><span class="op"><</span><span class="ident">String</span><span class="op">>></span><span class="op">></span>(); |
| <span class="ident">foo</span>::<span class="op"><</span><span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">String</span><span class="op">>></span>(); |
| <span class="ident">foo</span>::<span class="op"><</span><span class="ident">CachedThreadLocal</span><span class="op"><</span><span class="ident">RefCell</span><span class="op"><</span><span class="ident">String</span><span class="op">>></span><span class="op">></span>(); |
| } |
| } |
| </pre> |
| </section> |
| <section id='search' class="content hidden"></section> |
| |
| <section class="footer"></section> |
| |
| <aside id="help" class="hidden"> |
| <div> |
| <h1 class="hidden">Help</h1> |
| |
| <div class="shortcuts"> |
| <h2>Keyboard Shortcuts</h2> |
| |
| <dl> |
| <dt>?</dt> |
| <dd>Show this help dialog</dd> |
| <dt>S</dt> |
| <dd>Focus the search field</dd> |
| <dt>⇤</dt> |
| <dd>Move up in search results</dd> |
| <dt>⇥</dt> |
| <dd>Move down in search results</dd> |
| <dt>⏎</dt> |
| <dd>Go to active search result</dd> |
| <dt>+</dt> |
| <dd>Collapse/expand all sections</dd> |
| </dl> |
| </div> |
| |
| <div class="infos"> |
| <h2>Search Tricks</h2> |
| |
| <p> |
| Prefix searches with a type followed by a colon (e.g. |
| <code>fn:</code>) to restrict the search to a given type. |
| </p> |
| |
| <p> |
| Accepted types are: <code>fn</code>, <code>mod</code>, |
| <code>struct</code>, <code>enum</code>, |
| <code>trait</code>, <code>type</code>, <code>macro</code>, |
| and <code>const</code>. |
| </p> |
| |
| <p> |
| Search functions by type signature (e.g. |
| <code>vec -> usize</code> or <code>* -> vec</code>) |
| </p> |
| </div> |
| </div> |
| </aside> |
| |
| |
| |
| <script> |
| window.rootPath = "../../"; |
| window.currentCrate = "thread_local"; |
| </script> |
| <script src="../../main.js"></script> |
| <script defer src="../../search-index.js"></script> |
| </body> |
| </html> |