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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> </pre><div class="example-wrap"><pre class="rust "> <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>::<span class="ident">File</span>; <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::{<span class="ident">stdout</span>, <span class="ident">BufReader</span>, <span class="ident">ErrorKind</span>, <span class="ident">Read</span>, <span class="ident">Write</span>}; <span class="kw">use</span> <span class="ident">anyhow</span>::<span class="prelude-ty">Result</span>; <span class="kw">use</span> <span class="ident">instant</span>::<span class="ident">Instant</span>; <span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">prettyprint_usize</span>, <span class="ident">PROGRESS_FREQUENCY_SECONDS</span>}; <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">elapsed_seconds</span>(<span class="ident">since</span>: <span class="ident">Instant</span>) <span class="op">-</span><span class="op">></span> <span class="ident">f64</span> { <span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">since</span>.<span class="ident">elapsed</span>(); (<span class="ident">dt</span>.<span class="ident">as_secs</span>() <span class="kw">as</span> <span class="ident">f64</span>) <span class="op">+</span> (<span class="ident">f64</span>::<span class="ident">from</span>(<span class="ident">dt</span>.<span class="ident">subsec_nanos</span>()) <span class="op">*</span> <span class="number">1e-9</span>) } <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span> <span class="kw">struct</span> <span class="ident">Progress</span> { <span class="ident">label</span>: <span class="ident">String</span>, <span class="ident">processed_items</span>: <span class="ident">usize</span>, <span class="ident">total_items</span>: <span class="ident">usize</span>, <span class="ident">started_at</span>: <span class="ident">Instant</span>, <span class="ident">last_printed_at</span>: <span class="ident">Instant</span>, <span class="ident">first_update</span>: <span class="ident">bool</span>, } <span class="kw">impl</span> <span class="ident">Progress</span> { <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">label</span>: <span class="ident">String</span>, <span class="ident">total_items</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Progress</span> { <span class="ident">Progress</span> { <span class="ident">label</span>, <span class="ident">processed_items</span>: <span class="number">0</span>, <span class="ident">total_items</span>, <span class="ident">started_at</span>: <span class="ident">Instant</span>::<span class="ident">now</span>(), <span class="ident">last_printed_at</span>: <span class="ident">Instant</span>::<span class="ident">now</span>(), <span class="ident">first_update</span>: <span class="bool-val">true</span>, } } <span class="comment">// Returns when done</span> <span class="kw">fn</span> <span class="ident">next</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>( <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">maybe_sink</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">dyn</span> <span class="ident">TimerSink</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span><span class="op">></span>, ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span>(<span class="ident">f64</span>, <span class="ident">String</span>)<span class="op">></span> { <span class="self">self</span>.<span class="ident">processed_items</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>; <span class="kw">if</span> <span class="self">self</span>.<span class="ident">processed_items</span> <span class="op">></span> <span class="self">self</span>.<span class="ident">total_items</span> { <span class="macro">panic</span><span class="macro">!</span>( <span class="string">"{} is too few items for {} progress"</span>, <span class="ident">prettyprint_usize</span>(<span class="self">self</span>.<span class="ident">total_items</span>), <span class="self">self</span>.<span class="ident">label</span> ); } <span class="kw">if</span> <span class="self">self</span>.<span class="ident">processed_items</span> <span class="op">=</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">total_items</span> { <span class="kw">let</span> <span class="ident">elapsed</span> <span class="op">=</span> <span class="ident">elapsed_seconds</span>(<span class="self">self</span>.<span class="ident">started_at</span>); <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="macro">format</span><span class="macro">!</span>( <span class="string">"{} ({})... {}"</span>, <span class="self">self</span>.<span class="ident">label</span>, <span class="ident">prettyprint_usize</span>(<span class="self">self</span>.<span class="ident">total_items</span>), <span class="ident">prettyprint_time</span>(<span class="ident">elapsed</span>) ); <span class="kw">if</span> <span class="self">self</span>.<span class="ident">total_items</span> <span class="op">=</span><span class="op">=</span> <span class="number">1</span> { <span class="ident">Timer</span>::<span class="ident">selfless_println</span>(<span class="ident">maybe_sink</span>, <span class="ident">line</span>.<span class="ident">clone</span>()); } <span class="kw">else</span> { <span class="ident">clear_current_line</span>(); <span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">line</span>); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">sink</span>) <span class="op">=</span> <span class="ident">maybe_sink</span> { <span class="ident">sink</span>.<span class="ident">reprintln</span>(<span class="ident">line</span>.<span class="ident">clone</span>()); } } <span class="kw">return</span> <span class="prelude-val">Some</span>((<span class="ident">elapsed</span>, <span class="ident">line</span>)); } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">elapsed_seconds</span>(<span class="self">self</span>.<span class="ident">last_printed_at</span>) <span class="op">></span><span class="op">=</span> <span class="ident">PROGRESS_FREQUENCY_SECONDS</span> { <span class="self">self</span>.<span class="ident">last_printed_at</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>(); <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="macro">format</span><span class="macro">!</span>( <span class="string">"{}: {}/{}... {}"</span>, <span class="self">self</span>.<span class="ident">label</span>, <span class="ident">prettyprint_usize</span>(<span class="self">self</span>.<span class="ident">processed_items</span>), <span class="ident">prettyprint_usize</span>(<span class="self">self</span>.<span class="ident">total_items</span>), <span class="ident">prettyprint_time</span>(<span class="ident">elapsed_seconds</span>(<span class="self">self</span>.<span class="ident">started_at</span>)) ); <span class="ident">clear_current_line</span>(); <span class="macro">print</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">line</span>); <span class="ident">stdout</span>().<span class="ident">flush</span>().<span class="ident">unwrap</span>(); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">sink</span>) <span class="op">=</span> <span class="ident">maybe_sink</span> { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">first_update</span> { <span class="ident">sink</span>.<span class="ident">println</span>(<span class="ident">line</span>); <span class="self">self</span>.<span class="ident">first_update</span> <span class="op">=</span> <span class="bool-val">false</span>; } <span class="kw">else</span> { <span class="ident">sink</span>.<span class="ident">reprintln</span>(<span class="ident">line</span>); } } } <span class="prelude-val">None</span> } <span class="kw">fn</span> <span class="ident">cancel_iter_early</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">f64</span> { <span class="ident">elapsed_seconds</span>(<span class="self">self</span>.<span class="ident">started_at</span>) } } <span class="kw">enum</span> <span class="ident">StackEntry</span> { <span class="ident">TimerSpan</span>(<span class="ident">TimerSpan</span>), <span class="ident">Progress</span>(<span class="ident">Progress</span>), <span class="ident">File</span>(<span class="ident">TimedFileReader</span>), } <span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">TimerSink</span> { <span class="kw">fn</span> <span class="ident">println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">line</span>: <span class="ident">String</span>); <span class="kw">fn</span> <span class="ident">reprintln</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">line</span>: <span class="ident">String</span>); } <span class="doccomment">/// Hierarchial magic</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Timer</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { <span class="ident">results</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="ident">stack</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">StackEntry</span><span class="op">></span>, <span class="ident">outermost_name</span>: <span class="ident">String</span>, <span class="ident">notes</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">warnings</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">errors</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="ident">sink</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">dyn</span> <span class="ident">TimerSink</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span><span class="op">></span>, } <span class="kw">struct</span> <span class="ident">TimerSpan</span> { <span class="ident">name</span>: <span class="ident">String</span>, <span class="ident">started_at</span>: <span class="ident">Instant</span>, <span class="ident">nested_results</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="ident">nested_time</span>: <span class="ident">f64</span>, } <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Parallelism</span> { <span class="doccomment">/// Use all CPUs</span> <span class="ident">Fastest</span>, <span class="doccomment">/// Use half of CPUs</span> <span class="ident">Polite</span>, } <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Timer</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span><span class="op">></span>(<span class="ident">raw_name</span>: <span class="ident">S</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Timer</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">raw_name</span>.<span class="ident">into</span>(); <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">t</span> <span class="op">=</span> <span class="ident">Timer</span> { <span class="ident">results</span>: <span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">stack</span>: <span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">outermost_name</span>: <span class="ident">name</span>.<span class="ident">clone</span>(), <span class="ident">notes</span>: <span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">warnings</span>: <span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">errors</span>: <span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">sink</span>: <span class="prelude-val">None</span>, }; <span class="ident">t</span>.<span class="ident">start</span>(<span class="ident">name</span>); <span class="ident">t</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new_with_sink</span>(<span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">sink</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">dyn</span> <span class="ident">TimerSink</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Timer</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">t</span> <span class="op">=</span> <span class="ident">Timer</span>::<span class="ident">new</span>(<span class="ident">name</span>); <span class="ident">t</span>.<span class="ident">sink</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">sink</span>); <span class="ident">t</span> } <span class="comment">// TODO Shouldn't use this much.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">throwaway</span>() <span class="op">-</span><span class="op">></span> <span class="ident">Timer</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { <span class="ident">Timer</span>::<span class="ident">new</span>(<span class="string">"throwaway"</span>) } <span class="kw">fn</span> <span class="ident">println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">line</span>: <span class="ident">String</span>) { <span class="ident">Timer</span>::<span class="ident">selfless_println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>, <span class="ident">line</span>); } <span class="comment">// Workaround for borrow checker</span> <span class="kw">fn</span> <span class="ident">selfless_println</span>(<span class="ident">maybe_sink</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">dyn</span> <span class="ident">TimerSink</span> <span class="op">+</span> <span class="lifetime">'a</span><span class="op">></span><span class="op">></span>, <span class="ident">line</span>: <span class="ident">String</span>) { <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"wasm32"</span>))]</span> { <span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">line</span>); } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"wasm32"</span>)]</span> { <span class="ident">log</span>::<span class="macro">debug</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">line</span>); } <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">sink</span>) <span class="op">=</span> <span class="ident">maybe_sink</span> { <span class="ident">sink</span>.<span class="ident">println</span>(<span class="ident">line</span>); } } <span class="doccomment">/// Log immediately, but also repeat at the end, to avoid having to scroll up and find</span> <span class="doccomment">/// interesting debug stuff.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">note</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">line</span>: <span class="ident">String</span>) { <span class="comment">// Interrupt the start_iter with a newline.</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">Progress</span>(<span class="kw">_</span>)) <span class="op">=</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last</span>() { <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); } <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">line</span>.<span class="ident">clone</span>()); <span class="self">self</span>.<span class="ident">notes</span>.<span class="ident">push</span>(<span class="ident">line</span>); } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">warn</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">line</span>: <span class="ident">String</span>) { <span class="self">self</span>.<span class="ident">warnings</span>.<span class="ident">push</span>(<span class="ident">line</span>); } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">error</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">line</span>: <span class="ident">String</span>) { <span class="self">self</span>.<span class="ident">errors</span>.<span class="ident">push</span>(<span class="ident">line</span>); } <span class="doccomment">/// Used to end the scope of a timer early.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">done</span>(<span class="self">self</span>) {} <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">start</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">raw_name</span>: <span class="ident">S</span>) { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">return</span>; } <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">raw_name</span>.<span class="ident">into</span>(); <span class="self">self</span>.<span class="ident">println</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}..."</span>, <span class="ident">name</span>)); <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">push</span>(<span class="ident">StackEntry</span>::<span class="ident">TimerSpan</span>(<span class="ident">TimerSpan</span> { <span class="ident">name</span>, <span class="ident">started_at</span>: <span class="ident">Instant</span>::<span class="ident">now</span>(), <span class="ident">nested_results</span>: <span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">nested_time</span>: <span class="number">0.0</span>, })); } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">stop</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">raw_name</span>: <span class="ident">S</span>) { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">return</span>; } <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">raw_name</span>.<span class="ident">into</span>(); <span class="kw">let</span> <span class="ident">span</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>().<span class="ident">unwrap</span>() { <span class="ident">StackEntry</span>::<span class="ident">TimerSpan</span>(<span class="ident">s</span>) <span class="op">=</span><span class="op">></span> <span class="ident">s</span>, <span class="ident">StackEntry</span>::<span class="ident">Progress</span>(<span class="ident">p</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"stop() during unfinished start_iter(): {:?}"</span>, <span class="ident">p</span>), <span class="ident">StackEntry</span>::<span class="ident">File</span>(<span class="ident">f</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"stop() while reading file {}"</span>, <span class="ident">f</span>.<span class="ident">path</span>), }; <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">span</span>.<span class="ident">name</span>, <span class="ident">name</span>); <span class="kw">let</span> <span class="ident">elapsed</span> <span class="op">=</span> <span class="ident">elapsed_seconds</span>(<span class="ident">span</span>.<span class="ident">started_at</span>); <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{} took {}"</span>, <span class="ident">name</span>, <span class="ident">prettyprint_time</span>(<span class="ident">elapsed</span>)); <span class="kw">let</span> <span class="ident">padding</span> <span class="op">=</span> <span class="string">" "</span>.<span class="ident">repeat</span>(<span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">len</span>()); <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last_mut</span>() { <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">TimerSpan</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">s</span>)) <span class="op">=</span><span class="op">></span> { <span class="ident">s</span>.<span class="ident">nested_results</span>.<span class="ident">push</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}- {}"</span>, <span class="ident">padding</span>, <span class="ident">line</span>)); <span class="ident">s</span>.<span class="ident">nested_results</span>.<span class="ident">extend</span>(<span class="ident">span</span>.<span class="ident">nested_results</span>); <span class="kw">if</span> <span class="ident">span</span>.<span class="ident">nested_time</span> <span class="op">!</span><span class="op">=</span> <span class="number">0.0</span> { <span class="ident">Timer</span>::<span class="ident">selfless_println</span>( <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>, <span class="macro">format</span><span class="macro">!</span>( <span class="string">"{}... plus {}"</span>, <span class="ident">name</span>, <span class="ident">prettyprint_time</span>(<span class="ident">elapsed</span> <span class="op">-</span> <span class="ident">span</span>.<span class="ident">nested_time</span>) ), ); <span class="ident">s</span>.<span class="ident">nested_results</span>.<span class="ident">push</span>(<span class="macro">format</span><span class="macro">!</span>( <span class="string">" {}- ... plus {}"</span>, <span class="ident">padding</span>, <span class="ident">prettyprint_time</span>(<span class="ident">elapsed</span> <span class="op">-</span> <span class="ident">span</span>.<span class="ident">nested_time</span>) )); } <span class="ident">s</span>.<span class="ident">nested_time</span> <span class="op">+</span><span class="op">=</span> <span class="ident">elapsed</span>; } <span class="prelude-val">Some</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(), <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> { <span class="self">self</span>.<span class="ident">results</span>.<span class="ident">push</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}- {}"</span>, <span class="ident">padding</span>, <span class="ident">line</span>)); <span class="self">self</span>.<span class="ident">results</span>.<span class="ident">extend</span>(<span class="ident">span</span>.<span class="ident">nested_results</span>); <span class="kw">if</span> <span class="ident">span</span>.<span class="ident">nested_time</span> <span class="op">!</span><span class="op">=</span> <span class="number">0.0</span> { <span class="self">self</span>.<span class="ident">println</span>(<span class="macro">format</span><span class="macro">!</span>( <span class="string">"{}... plus {}"</span>, <span class="ident">name</span>, <span class="ident">prettyprint_time</span>(<span class="ident">elapsed</span> <span class="op">-</span> <span class="ident">span</span>.<span class="ident">nested_time</span>) )); <span class="self">self</span>.<span class="ident">results</span>.<span class="ident">push</span>(<span class="macro">format</span><span class="macro">!</span>( <span class="string">" - ... plus {}"</span>, <span class="ident">prettyprint_time</span>(<span class="ident">elapsed</span> <span class="op">-</span> <span class="ident">span</span>.<span class="ident">nested_time</span>) )); } <span class="comment">// Don't bother tracking excess time that the Timer has existed but had no spans</span> } } <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">line</span>); } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">start_iter</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">raw_name</span>: <span class="ident">S</span>, <span class="ident">total_items</span>: <span class="ident">usize</span>) { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">return</span>; } <span class="kw">if</span> <span class="ident">total_items</span> <span class="op">=</span><span class="op">=</span> <span class="number">0</span> { <span class="kw">return</span>; } <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">raw_name</span>.<span class="ident">into</span>(); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">Progress</span>(<span class="ident">p</span>)) <span class="op">=</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last</span>() { <span class="macro">panic</span><span class="macro">!</span>( <span class="string">"Can't start_iter({}) while Progress({}) is top of the stack"</span>, <span class="ident">name</span>, <span class="ident">p</span>.<span class="ident">label</span> ); } <span class="self">self</span>.<span class="ident">stack</span> .<span class="ident">push</span>(<span class="ident">StackEntry</span>::<span class="ident">Progress</span>(<span class="ident">Progress</span>::<span class="ident">new</span>(<span class="ident">name</span>, <span class="ident">total_items</span>))); } <span class="kw">pub</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="kw">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">return</span>; } <span class="kw">let</span> <span class="ident">maybe_result</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">Progress</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">progress</span>)) <span class="op">=</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last_mut</span>() { <span class="ident">progress</span>.<span class="ident">next</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>) } <span class="kw">else</span> { <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"Can't next() while a TimerSpan is top of the stack"</span>); }; <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="ident">elapsed</span>, <span class="ident">result</span>)) <span class="op">=</span> <span class="ident">maybe_result</span> { <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>(); <span class="self">self</span>.<span class="ident">add_result</span>(<span class="ident">elapsed</span>, <span class="ident">result</span>); } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">cancel_iter_early</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">return</span>; } <span class="kw">let</span> <span class="ident">elapsed</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">Progress</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">progress</span>)) <span class="op">=</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last_mut</span>() { <span class="ident">progress</span>.<span class="ident">cancel_iter_early</span>() } <span class="kw">else</span> { <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"Can't cancel_iter_early() while a TimerSpan is top of the stack"</span>); }; <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>(); <span class="self">self</span>.<span class="ident">add_result</span>(<span class="ident">elapsed</span>, <span class="macro">format</span><span class="macro">!</span>(<span class="string">"cancelled early"</span>)); } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_result</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">elapsed</span>: <span class="ident">f64</span>, <span class="ident">line</span>: <span class="ident">String</span>) { <span class="kw">let</span> <span class="ident">padding</span> <span class="op">=</span> <span class="string">" "</span>.<span class="ident">repeat</span>(<span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">len</span>()); <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last_mut</span>() { <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">TimerSpan</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">s</span>)) <span class="op">=</span><span class="op">></span> { <span class="ident">s</span>.<span class="ident">nested_results</span>.<span class="ident">push</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}- {}"</span>, <span class="ident">padding</span>, <span class="ident">line</span>)); <span class="ident">s</span>.<span class="ident">nested_time</span> <span class="op">+</span><span class="op">=</span> <span class="ident">elapsed</span>; } <span class="prelude-val">Some</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(), <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> { <span class="self">self</span>.<span class="ident">results</span>.<span class="ident">push</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}- {}"</span>, <span class="ident">padding</span>, <span class="ident">line</span>)); <span class="comment">// Don't bother tracking excess time that the Timer has existed but had no spans</span> } } } <span class="doccomment">/// The order of the result is deterministic / matches the input.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parallelize</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">O</span>, <span class="ident">F</span>: <span class="ident">Fn</span>(<span class="ident">I</span>) <span class="op">-</span><span class="op">></span> <span class="ident">O</span><span class="op">></span>( <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">timer_name</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">parallelism</span>: <span class="ident">Parallelism</span>, <span class="ident">requests</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">I</span><span class="op">></span>, <span class="ident">cb</span>: <span class="ident">F</span>, ) <span class="op">-</span><span class="op">></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">O</span><span class="op">></span> <span class="kw">where</span> <span class="ident">I</span>: <span class="ident">Send</span>, <span class="ident">O</span>: <span class="ident">Send</span>, <span class="ident">F</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Clone</span> <span class="op">+</span> <span class="ident">Copy</span>, { <span class="comment">// Here's the sequential equivalent, to conveniently compare times. Also gotta use this in</span> <span class="comment">// wasm; no threads.</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"wasm32"</span>)]</span> { <span class="comment">// Silence an unused warning</span> <span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">parallelism</span>; <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">results</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">O</span><span class="op">></span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>(); <span class="self">self</span>.<span class="ident">start_iter</span>(<span class="ident">timer_name</span>, <span class="ident">requests</span>.<span class="ident">len</span>()); <span class="kw">for</span> <span class="ident">req</span> <span class="kw">in</span> <span class="ident">requests</span> { <span class="self">self</span>.<span class="ident">next</span>(); <span class="ident">results</span>.<span class="ident">push</span>(<span class="ident">cb</span>(<span class="ident">req</span>)); } <span class="kw">return</span> <span class="ident">results</span>; } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"wasm32"</span>))]</span> { <span class="kw">let</span> <span class="ident">cpus</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">parallelism</span> { <span class="ident">Parallelism</span>::<span class="ident">Fastest</span> <span class="op">=</span><span class="op">></span> <span class="ident">num_cpus</span>::<span class="ident">get</span>(), <span class="ident">Parallelism</span>::<span class="ident">Polite</span> <span class="op">=</span><span class="op">></span> <span class="ident">num_cpus</span>::<span class="ident">get</span>() <span class="op">/</span> <span class="number">2</span>, } .<span class="ident">max</span>(<span class="number">1</span>) <span class="kw">as</span> <span class="ident">u32</span>; <span class="ident">scoped_threadpool</span>::<span class="ident">Pool</span>::<span class="ident">new</span>(<span class="ident">cpus</span>).<span class="ident">scoped</span>(<span class="op">|</span><span class="ident">scope</span><span class="op">|</span> { <span class="kw">let</span> (<span class="ident">tx</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">mpsc</span>::<span class="ident">channel</span>(); <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">results</span>: <span class="ident">Vec</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">O</span><span class="op">></span><span class="op">></span> <span class="op">=</span> <span class="ident">std</span>::<span class="ident">iter</span>::<span class="ident">repeat_with</span>(<span class="op">|</span><span class="op">|</span> <span class="prelude-val">None</span>) .<span class="ident">take</span>(<span class="ident">requests</span>.<span class="ident">len</span>()) .<span class="ident">collect</span>(); <span class="kw">for</span> (<span class="ident">idx</span>, <span class="ident">req</span>) <span class="kw">in</span> <span class="ident">requests</span>.<span class="ident">into_iter</span>().<span class="ident">enumerate</span>() { <span class="kw">let</span> <span class="ident">tx</span> <span class="op">=</span> <span class="ident">tx</span>.<span class="ident">clone</span>(); <span class="ident">scope</span>.<span class="ident">execute</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> { <span class="comment">// TODO Can we catch panics here, dump a better stacktrace? widgetry runner</span> <span class="comment">// does this</span> <span class="ident">tx</span>.<span class="ident">send</span>((<span class="ident">idx</span>, <span class="ident">cb</span>(<span class="ident">req</span>))).<span class="ident">unwrap</span>(); }); } <span class="ident">drop</span>(<span class="ident">tx</span>); <span class="self">self</span>.<span class="ident">start_iter</span>(<span class="ident">timer_name</span>, <span class="ident">results</span>.<span class="ident">len</span>()); <span class="kw">for</span> (<span class="ident">idx</span>, <span class="ident">result</span>) <span class="kw">in</span> <span class="ident">rx</span>.<span class="ident">iter</span>() { <span class="self">self</span>.<span class="ident">next</span>(); <span class="ident">results</span>[<span class="ident">idx</span>] <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">result</span>); } <span class="ident">results</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="ident">x</span>.<span class="ident">unwrap</span>()).<span class="ident">collect</span>() }) } } <span class="doccomment">/// Then the caller passes this in as a reader</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">read_file</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">path</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { <span class="self">self</span>.<span class="ident">stack</span> .<span class="ident">push</span>(<span class="ident">StackEntry</span>::<span class="ident">File</span>(<span class="ident">TimedFileReader</span>::<span class="ident">new</span>(<span class="ident">path</span>)<span class="question-mark">?</span>)); <span class="prelude-val">Ok</span>(()) } } <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">std</span>::<span class="ident">ops</span>::<span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">Timer</span><span class="op"><</span><span class="lifetime">'a</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">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">=</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">return</span>; } <span class="kw">let</span> <span class="ident">stop_name</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">outermost_name</span>.<span class="ident">clone</span>(); <span class="comment">// If we're in the middle of unwinding a panic, don't further blow up.</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last</span>() { <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">TimerSpan</span>(<span class="kw-2">ref</span> <span class="ident">s</span>)) <span class="op">=</span><span class="op">></span> { <span class="kw">if</span> <span class="ident">s</span>.<span class="ident">name</span> <span class="op">!</span><span class="op">=</span> <span class="ident">stop_name</span> { <span class="macro">println</span><span class="macro">!</span>(<span class="string">"dropping Timer during {}, due to panic?"</span>, <span class="ident">s</span>.<span class="ident">name</span>); <span class="kw">return</span>; } } <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">File</span>(<span class="kw-2">ref</span> <span class="ident">r</span>)) <span class="op">=</span><span class="op">></span> { <span class="macro">println</span><span class="macro">!</span>(<span class="string">"dropping Timer while reading {}, due to panic?"</span>, <span class="ident">r</span>.<span class="ident">path</span>); <span class="kw">return</span>; } <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">Progress</span>(<span class="kw-2">ref</span> <span class="ident">p</span>)) <span class="op">=</span><span class="op">></span> { <span class="macro">println</span><span class="macro">!</span>( <span class="string">"dropping Timer while doing progress {}, due to panic?"</span>, <span class="ident">p</span>.<span class="ident">label</span> ); <span class="kw">return</span>; } <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(), } <span class="self">self</span>.<span class="ident">stop</span>(<span class="kw-2">&</span><span class="ident">stop_name</span>); <span class="macro">assert</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">is_empty</span>()); <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); <span class="kw">for</span> <span class="ident">line</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">results</span> { <span class="ident">Timer</span>::<span class="ident">selfless_println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>, <span class="ident">line</span>.<span class="ident">to_string</span>()); } <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">notes</span>.<span class="ident">is_empty</span>() { <span class="self">self</span>.<span class="ident">println</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{} notes:"</span>, <span class="self">self</span>.<span class="ident">notes</span>.<span class="ident">len</span>())); <span class="kw">for</span> <span class="ident">line</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">notes</span> { <span class="ident">Timer</span>::<span class="ident">selfless_println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>, <span class="ident">line</span>.<span class="ident">to_string</span>()); } <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); } <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">warnings</span>.<span class="ident">is_empty</span>() { <span class="self">self</span>.<span class="ident">println</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{} warnings:"</span>, <span class="self">self</span>.<span class="ident">warnings</span>.<span class="ident">len</span>())); <span class="kw">for</span> <span class="ident">line</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">warnings</span> { <span class="ident">Timer</span>::<span class="ident">selfless_println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>, <span class="ident">line</span>.<span class="ident">to_string</span>()); } <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); } <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">errors</span>.<span class="ident">is_empty</span>() { <span class="self">self</span>.<span class="ident">println</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"***** {} errors: *****"</span>, <span class="self">self</span>.<span class="ident">errors</span>.<span class="ident">len</span>())); <span class="kw">for</span> <span class="ident">line</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">errors</span> { <span class="ident">Timer</span>::<span class="ident">selfless_println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>, <span class="ident">line</span>.<span class="ident">to_string</span>()); } <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); } <span class="comment">// In case of lots of notes and warnings, repeat the overall timing.</span> <span class="ident">Timer</span>::<span class="ident">selfless_println</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">sink</span>, <span class="self">self</span>.<span class="ident">results</span>[<span class="number">0</span>].<span class="ident">clone</span>()); <span class="kw">if</span> <span class="ident">std</span>::<span class="ident">thread</span>::<span class="ident">panicking</span>() { <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">String</span>::<span class="ident">new</span>()); <span class="self">self</span>.<span class="ident">println</span>( <span class="string">"!!! The program panicked, look above for the stack trace !!!"</span>.<span class="ident">to_string</span>(), ); } } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">prettyprint_time</span>(<span class="ident">seconds</span>: <span class="ident">f64</span>) <span class="op">-</span><span class="op">></span> <span class="ident">String</span> { <span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:.4}s"</span>, <span class="ident">seconds</span>) } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear_current_line</span>() { <span class="comment">// Fails in the test runner.</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>((<span class="ident">terminal_width</span>, <span class="kw">_</span>)) <span class="op">=</span> <span class="ident">termion</span>::<span class="ident">terminal_size</span>() { <span class="macro">print</span><span class="macro">!</span>( <span class="string">"{}{}"</span>, <span class="ident">termion</span>::<span class="ident">clear</span>::<span class="ident">CurrentLine</span>, <span class="ident">termion</span>::<span class="ident">cursor</span>::<span class="ident">Left</span>(<span class="ident">terminal_width</span>) ); } <span class="kw">else</span> { <span class="macro">print</span><span class="macro">!</span>(<span class="string">"\r"</span>); } } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">unix</span>))]</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear_current_line</span>() { <span class="macro">print</span><span class="macro">!</span>(<span class="string">"\r"</span>); } <span class="kw">struct</span> <span class="ident">TimedFileReader</span> { <span class="ident">inner</span>: <span class="ident">BufReader</span><span class="op"><</span><span class="ident">File</span><span class="op">></span>, <span class="ident">path</span>: <span class="ident">String</span>, <span class="ident">processed_bytes</span>: <span class="ident">usize</span>, <span class="ident">total_bytes</span>: <span class="ident">usize</span>, <span class="ident">started_at</span>: <span class="ident">Instant</span>, <span class="ident">last_printed_at</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Instant</span><span class="op">></span>, } <span class="kw">impl</span> <span class="ident">TimedFileReader</span> { <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">path</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">TimedFileReader</span><span class="op">></span> { <span class="kw">let</span> <span class="ident">file</span> <span class="op">=</span> <span class="ident">File</span>::<span class="ident">open</span>(<span class="ident">path</span>)<span class="question-mark">?</span>; <span class="kw">let</span> <span class="ident">total_bytes</span> <span class="op">=</span> <span class="ident">file</span>.<span class="ident">metadata</span>()<span class="question-mark">?</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">usize</span>; <span class="prelude-val">Ok</span>(<span class="ident">TimedFileReader</span> { <span class="ident">inner</span>: <span class="ident">BufReader</span>::<span class="ident">new</span>(<span class="ident">file</span>), <span class="ident">path</span>: <span class="ident">path</span>.<span class="ident">to_string</span>(), <span class="ident">processed_bytes</span>: <span class="number">0</span>, <span class="ident">total_bytes</span>, <span class="ident">started_at</span>: <span class="ident">Instant</span>::<span class="ident">now</span>(), <span class="ident">last_printed_at</span>: <span class="prelude-val">None</span>, }) } } <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Read</span> <span class="kw">for</span> <span class="ident">Timer</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { <span class="kw">fn</span> <span class="ident">read</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span>, <span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">Error</span><span class="op">></span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">file</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">last_mut</span>() { <span class="prelude-val">Some</span>(<span class="ident">StackEntry</span>::<span class="ident">File</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">f</span>)) <span class="op">=</span><span class="op">></span> <span class="ident">f</span>, <span class="kw">_</span> <span class="op">=</span><span class="op">></span> { <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">Error</span>::<span class="ident">new</span>( <span class="ident">ErrorKind</span>::<span class="ident">Other</span>, <span class="string">"trying to read when Timer doesn't have file on the stack?!"</span>, )); } }; <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">file</span>.<span class="ident">inner</span>.<span class="ident">read</span>(<span class="ident">buf</span>)<span class="question-mark">?</span>; <span class="ident">file</span>.<span class="ident">processed_bytes</span> <span class="op">+</span><span class="op">=</span> <span class="ident">bytes</span>; <span class="kw">if</span> <span class="ident">file</span>.<span class="ident">processed_bytes</span> <span class="op">></span> <span class="ident">file</span>.<span class="ident">total_bytes</span> { <span class="macro">panic</span><span class="macro">!</span>( <span class="string">"{} is too many bytes read from {}"</span>, <span class="ident">prettyprint_usize</span>(<span class="ident">file</span>.<span class="ident">processed_bytes</span>), <span class="ident">file</span>.<span class="ident">path</span> ); } <span class="kw">if</span> <span class="ident">file</span>.<span class="ident">processed_bytes</span> <span class="op">=</span><span class="op">=</span> <span class="ident">file</span>.<span class="ident">total_bytes</span> { <span class="kw">let</span> <span class="ident">elapsed</span> <span class="op">=</span> <span class="ident">elapsed_seconds</span>(<span class="ident">file</span>.<span class="ident">started_at</span>); <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="macro">format</span><span class="macro">!</span>( <span class="string">"Read {} ({})... {}"</span>, <span class="ident">file</span>.<span class="ident">path</span>, <span class="ident">prettyprint_usize</span>(<span class="ident">file</span>.<span class="ident">total_bytes</span> <span class="op">/</span> <span class="number">1024</span> <span class="op">/</span> <span class="number">1024</span>), <span class="ident">prettyprint_time</span>(<span class="ident">elapsed</span>) ); <span class="kw">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">!</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">if</span> <span class="ident">file</span>.<span class="ident">last_printed_at</span>.<span class="ident">is_none</span>() { <span class="self">self</span>.<span class="ident">println</span>(<span class="ident">line</span>.<span class="ident">clone</span>()); } <span class="kw">else</span> { <span class="ident">clear_current_line</span>(); <span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">line</span>); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">sink</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">sink</span> { <span class="ident">sink</span>.<span class="ident">reprintln</span>(<span class="ident">line</span>.<span class="ident">clone</span>()); } } } <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>(); <span class="self">self</span>.<span class="ident">add_result</span>(<span class="ident">elapsed</span>, <span class="ident">line</span>); } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">file</span>.<span class="ident">last_printed_at</span>.<span class="ident">is_none</span>() <span class="op">|</span><span class="op">|</span> <span class="ident">elapsed_seconds</span>(<span class="ident">file</span>.<span class="ident">last_printed_at</span>.<span class="ident">unwrap</span>()) <span class="op">></span><span class="op">=</span> <span class="ident">PROGRESS_FREQUENCY_SECONDS</span> { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">outermost_name</span> <span class="op">!</span><span class="op">=</span> <span class="string">"throwaway"</span> { <span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="macro">format</span><span class="macro">!</span>( <span class="string">"Reading {}: {}/{} MB... {}"</span>, <span class="ident">file</span>.<span class="ident">path</span>, <span class="ident">prettyprint_usize</span>(<span class="ident">file</span>.<span class="ident">processed_bytes</span> <span class="op">/</span> <span class="number">1024</span> <span class="op">/</span> <span class="number">1024</span>), <span class="ident">prettyprint_usize</span>(<span class="ident">file</span>.<span class="ident">total_bytes</span> <span class="op">/</span> <span class="number">1024</span> <span class="op">/</span> <span class="number">1024</span>), <span class="ident">prettyprint_time</span>(<span class="ident">elapsed_seconds</span>(<span class="ident">file</span>.<span class="ident">started_at</span>)) ); <span class="comment">// TODO Refactor this pattern...</span> <span class="ident">clear_current_line</span>(); <span class="macro">print</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">line</span>); <span class="ident">stdout</span>().<span class="ident">flush</span>().<span class="ident">unwrap</span>(); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">sink</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">sink</span> { <span class="kw">if</span> <span class="ident">file</span>.<span class="ident">last_printed_at</span>.<span class="ident">is_none</span>() { <span class="ident">sink</span>.<span class="ident">println</span>(<span class="ident">line</span>); } <span class="kw">else</span> { <span class="ident">sink</span>.<span class="ident">reprintln</span>(<span class="ident">line</span>); } } } <span class="ident">file</span>.<span class="ident">last_printed_at</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">Instant</span>::<span class="ident">now</span>()); } <span class="prelude-val">Ok</span>(<span class="ident">bytes</span>) } } </pre></div> </section><section id="search" class="content hidden"></section><section class="footer"></section><script>window.rootPath = "../../";window.currentCrate = "abstutil";</script><script src="../../main.js"></script><script src="../../source-script.js"></script><script src="../../source-files.js"></script><script defer src="../../search-index.js"></script></body></html>