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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="API documentation for the Rust `Library` struct in crate `libloading`."><meta name="keywords" content="rust, rustlang, rust-lang, Library"><title>libloading::os::unix::Library - Rust</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script></head><body class="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><p class='location'>Struct Library</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.new">new</a><a href="#method.this">this</a><a href="#method.open">open</a><a href="#method.get">get</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Drop">Drop</a><a href="#impl-Debug">Debug</a><a href="#impl-From%3CLibrary%3E">From&lt;Library&gt;</a></div></div><p class='location'><a href='../../index.html'>libloading</a>::<wbr><a href='../index.html'>os</a>::<wbr><a href='index.html'>unix</a></p><script>window.sidebarCurrent = {name: 'Library', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><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"><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='in-band'>Struct <a href='../../index.html'>libloading</a>::<wbr><a href='../index.html'>os</a>::<wbr><a href='index.html'>unix</a>::<wbr><a class="struct" href=''>Library</a></span><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>&#x2212;</span>]</a></span><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#70-72' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct Library { /* fields omitted */ }</pre></div><div class='docblock'><p>A platform-specific equivalent of the cross-platform <code>Library</code>.</p>
</div><h2 id='methods' class='small-section-header'>Methods<a href='#methods' class='anchor'></a></h2><h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code><a href='#impl' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#92-197' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.new' class='fnname'>new</a>&lt;P:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/std/ffi/os_str/struct.OsStr.html" title="struct std::ffi::os_str::OsStr">OsStr</a>&gt;&gt;(filename: P) -&gt; <a class="type" href="../../../libloading/type.Result.html" title="type libloading::Result">Result</a>&lt;<a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a>&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#100-102' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Find and load a shared library (module).</p>
<p>Locations where library is searched for is platform specific and cant be adjusted
portably.</p>
<p>Corresponds to <code>dlopen(filename, RTLD_NOW)</code>.</p>
</div><h4 id='method.this' class="method"><span id='this.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.this' class='fnname'>this</a>() -&gt; <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#111-113' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Load the dynamic libraries linked into main program.</p>
<p>This allows retrieving symbols from any <strong>dynamic</strong> library linked into the program,
without specifying the exact library.</p>
<p>Corresponds to <code>dlopen(NULL, RTLD_NOW)</code>.</p>
</div><h4 id='method.open' class="method"><span id='open.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.open' class='fnname'>open</a>&lt;P&gt;(filename: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;P&gt;, flags: <a class="type" href="https://doc.rust-lang.org/nightly/std/os/raw/type.c_int.html" title="type std::os::raw::c_int">c_int</a>) -&gt; <a class="type" href="../../../libloading/type.Result.html" title="type libloading::Result">Result</a>&lt;<a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;P: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/std/ffi/os_str/struct.OsStr.html" title="struct std::ffi::os_str::OsStr">OsStr</a>&gt;,&nbsp;</span></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#123-149' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Find and load a shared library (module).</p>
<p>Locations where library is searched for is platform specific and cant be adjusted
portably.</p>
<p>If the <code>filename</code> is None, null pointer is passed to <code>dlopen</code>.</p>
<p>Corresponds to <code>dlopen(filename, flags)</code>.</p>
</div><h4 id='method.get' class="method"><span id='get.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub unsafe fn <a href='#method.get' class='fnname'>get</a>&lt;T&gt;(&amp;self, symbol: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -&gt; <a class="type" href="../../../libloading/type.Result.html" title="type libloading::Result">Result</a>&lt;<a class="struct" href="../../../libloading/os/unix/struct.Symbol.html" title="struct libloading::os::unix::Symbol">Symbol</a>&lt;T&gt;&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#168-196' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Get a pointer to function or static variable by symbol name.</p>
<p>The <code>symbol</code> may not contain any null bytes, with an exception of last byte. A null
terminated <code>symbol</code> may avoid a string allocation in some cases.</p>
<p>Symbol is interpreted as-is; no mangling is done. This means that symbols like <code>x::y</code> are
most likely invalid.</p>
<h2 id="unsafety" class="section-header"><a href="#unsafety">Unsafety</a></h2>
<p>Pointer to a value of arbitrary type is returned. Using a value with wrong type is
undefined.</p>
<h2 id="platform-specific-behaviour" class="section-header"><a href="#platform-specific-behaviour">Platform-specific behaviour</a></h2>
<p>OS X uses some sort of lazy initialization scheme, which makes loading TLS variables
impossible. Using a TLS variable loaded this way on OS X is undefined behaviour.</p>
</div></div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-Send' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code><a href='#impl-Send' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#74' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code><a href='#impl-Sync' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#90' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'></div><h3 id='impl-Drop' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code><a href='#impl-Drop' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#199-207' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.drop' class="method"><span id='drop.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop' class='fnname'>drop</a>(&amp;mut self)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#200-206' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Executes the destructor for this type. <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code><a href='#impl-Debug' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#209-213' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/os/unix/mod.rs.html#210-212' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-From%3CLibrary%3E' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a>&gt; for <a class="struct" href="../../../libloading/struct.Library.html" title="struct libloading::Library">Library</a></code><a href='#impl-From%3CLibrary%3E' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/lib.rs.html#182-186' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.from' class="method"><span id='from.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(lib: <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a>) -&gt; <a class="struct" href="../../../libloading/struct.Library.html" title="struct libloading::Library">Library</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/lib.rs.html#183-185' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Performs the conversion.</p>
</div></div><h3 id='impl-From%3CLibrary%3E-1' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="struct" href="../../../libloading/struct.Library.html" title="struct libloading::Library">Library</a>&gt; for <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code><a href='#impl-From%3CLibrary%3E-1' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/lib.rs.html#188-192' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.from-1' class="method"><span id='from.v-1' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(lib: <a class="struct" href="../../../libloading/struct.Library.html" title="struct libloading::Library">Library</a>) -&gt; <a class="struct" href="../../../libloading/os/unix/struct.Library.html" title="struct libloading::os::unix::Library">Library</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/libloading/lib.rs.html#189-191' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Performs the conversion.</p>
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