17 lines
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17 lines
5.5 KiB
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<!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="Stop signalling for in-flight downloads."><title>jellytau_lib::download::stop - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="jellytau_lib" data-themes="" data-resource-suffix="" data-rustdoc-version="1.97.1 (8bab26f4f 2026-07-14)" data-channel="1.97.1" data-search-js="search-fd9372ac.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../../../static.files/storage-41dd4d93.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../../static.files/main-fcd733ba.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Module stop</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../jellytau_lib/index.html">jellytau_<wbr>lib</a><span class="version">0.11.2</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module stop</a></h2><h3><a href="#functions">Module Items</a></h3><ul class="block"><li><a href="#functions" title="Functions">Functions</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In jellytau_<wbr>lib::<wbr>download</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../index.html">jellytau_lib</a>::<wbr><a href="../index.html">download</a></div><h1>Module <span>stop</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../../src/jellytau_lib/download/stop.rs.html#1-150">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Stop signalling for in-flight downloads.</p>
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<p>TRACES: UR-055 | DR-168</p>
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<p>Pausing and cancelling used to be database-only: <code>pause_download</code> wrote
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<code>status = 'paused'</code> and nothing else. No cancellation existed anywhere in the
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download stack — no token, no flag, no abort — so the streaming task kept
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running, kept writing bytes, and on finishing overwrote the row with
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<code>completed</code> or <code>failed</code>. The row flicked to “paused” and then undid itself,
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which is precisely the reported “pause does not work”.</p>
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<p>This is the missing half: a flag per in-flight download that the worker reads
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between chunks. Setting it makes the worker return <a href="../worker/enum.DownloadError.html#variant.Stopped" title="variant jellytau_lib::download::worker::DownloadError::Stopped"><code>Stopped</code></a> promptly and
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leave the <code>.part</code> file <strong>intact</strong>, which is what lets a resume pick up from
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where it stopped via the existing HTTP Range request.</p>
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<p>Kept as a module-level registry rather than on <code>DownloadManager</code> because the
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two sides never meet: the command handler holds the manager’s lock, while the
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worker runs detached inside <code>tauri::async_runtime::spawn</code> with no access to
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Tauri state. A registry both can reach is the smallest thing that works.</p>
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</div></details><h2 id="functions" class="section-header">Functions<a href="#functions" class="anchor">§</a></h2><dl class="item-table"><dt><a class="fn" href="fn.clear.html" title="fn jellytau_lib::download::stop::clear">clear</a></dt><dd>Forget a download’s flag. Called when its task finishes, however it ended.</dd><dt><a class="fn" href="fn.register.html" title="fn jellytau_lib::download::stop::register">register</a></dt><dd>Register <code>download_id</code> as in-flight and hand back its stop flag.</dd><dt><a class="fn" href="fn.registry.html" title="fn jellytau_lib::download::stop::registry">registry</a><span title="Restricted Visibility"> 🔒</span> </dt><dd>download id → its stop flag, for downloads currently in flight.</dd><dt><a class="fn" href="fn.signal.html" title="fn jellytau_lib::download::stop::signal">signal</a></dt><dd>Ask an in-flight download to stop.</dd></dl></section></div></main></body></html> |