236 lines
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HTML
236 lines
10 KiB
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<!DOCTYPE html>
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<html lang="en">
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<meta name="generator" content="rustdoc">
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<meta name="description" content="API documentation for the Rust `tokio_executor` crate.">
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<meta name="keywords" content="rust, rustlang, rust-lang, tokio_executor">
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<title>tokio_executor - Rust</title>
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<link rel="stylesheet" type="text/css" href="../normalize.css">
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<link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle">
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<body class="rustdoc mod">
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<nav class="sidebar">
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<div class="sidebar-menu">☰</div>
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<p class='location'>Crate tokio_executor</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#modules">Modules</a></li><li><a href="#structs">Structs</a></li><li><a href="#traits">Traits</a></li><li><a href="#functions">Functions</a></li></ul></div><p class='location'></p><script>window.sidebarCurrent = {name: 'tokio_executor', ty: 'mod', relpath: '../'};</script></div>
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<div class="search-container">
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<input class="search-input" name="search"
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autocomplete="off"
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placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
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type="search">
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</div>
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</form>
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</nav>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Crate <a class="mod" href=''>tokio_executor</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../src/tokio_executor/lib.rs.html#1-240' title='goto source code'>[src]</a></span></h1>
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<div class='docblock'><p>Task execution related traits and utilities.</p>
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<p>In the Tokio execution model, futures are lazy. When a future is created, no
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work is performed. In order for the work defined by the future to happen,
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the future must be submitted to an executor. A future that is submitted to
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an executor is called a "task".</p>
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<p>The executor is responsible for ensuring that <a href="https://docs.rs/futures/0.1/futures/future/trait.Future.html#tymethod.poll"><code>Future::poll</code></a> is called
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whenever the task is notified. Notification happens when the internal
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state of a task transitions from <em>not ready</em> to <em>ready</em>. For example, a
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socket might have received data and a call to <code>read</code> will now be able to
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succeed.</p>
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<p>This crate provides traits and utilities that are necessary for building an
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executor, including:</p>
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<ul>
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<li>
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<p>The <a href="trait.Executor.html"><code>Executor</code></a> trait describes the API for spawning a future onto an
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executor.</p>
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</li>
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<li>
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<p><a href="fn.enter.html"><code>enter</code></a> marks that the the current thread is entering an execution
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context. This prevents a second executor from accidentally starting from
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within the context of one that is already running.</p>
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</li>
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<li>
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<p><a href="struct.DefaultExecutor.html"><code>DefaultExecutor</code></a> spawns tasks onto the default executor for the current
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context.</p>
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</li>
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<li>
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<p><a href="park/index.html"><code>Park</code></a> abstracts over blocking and unblocking the current thread.</p>
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</li>
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</ul>
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</div><h2 id='modules' class='section-header'><a href="#modules">Modules</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="mod" href="park/index.html"
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title='mod tokio_executor::park'>park</a></td>
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<td class='docblock-short'>
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<p>Abstraction over blocking and unblocking the current thread.</p>
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</td>
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</tr></table><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.DefaultExecutor.html"
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title='struct tokio_executor::DefaultExecutor'>DefaultExecutor</a></td>
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<td class='docblock-short'>
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<p>Executes futures on the default executor for the current execution context.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.Enter.html"
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title='struct tokio_executor::Enter'>Enter</a></td>
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<td class='docblock-short'>
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<p>Represents an executor context.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.EnterError.html"
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title='struct tokio_executor::EnterError'>EnterError</a></td>
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<td class='docblock-short'>
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<p>An error returned by <code>enter</code> if an execution scope has already been
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entered.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.SpawnError.html"
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title='struct tokio_executor::SpawnError'>SpawnError</a></td>
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<td class='docblock-short'>
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<p>Errors returned by <code>Executor::spawn</code>.</p>
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</td>
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</tr></table><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="trait" href="trait.Executor.html"
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title='trait tokio_executor::Executor'>Executor</a></td>
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<td class='docblock-short'>
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<p>A value that executes futures.</p>
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</td>
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</tr></table><h2 id='functions' class='section-header'><a href="#functions">Functions</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="fn" href="fn.enter.html"
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title='fn tokio_executor::enter'>enter</a></td>
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<td class='docblock-short'>
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<p>Marks the current thread as being within the dynamic extent of an
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executor.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="fn" href="fn.spawn.html"
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title='fn tokio_executor::spawn'>spawn</a></td>
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<td class='docblock-short'>
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<p>Submits a future for execution on the default executor -- usually a
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threadpool.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="fn" href="fn.with_default.html"
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title='fn tokio_executor::with_default'>with_default</a></td>
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<td class='docblock-short'>
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<p>Set the default executor for the duration of the closure</p>
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</td>
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</tr></table></section>
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<h1 class="hidden">Help</h1>
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<h2>Keyboard Shortcuts</h2>
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Accepted types are: <code>fn</code>, <code>mod</code>,
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and <code>const</code>.
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