struct.Backtrace.html 18 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193
  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="utf-8">
  5. <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6. <meta name="generator" content="rustdoc">
  7. <meta name="description" content="API documentation for the Rust `Backtrace` struct in crate `backtrace`.">
  8. <meta name="keywords" content="rust, rustlang, rust-lang, Backtrace">
  9. <title>backtrace::Backtrace - Rust</title>
  10. <link rel="stylesheet" type="text/css" href="../normalize.css">
  11. <link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle">
  12. <link rel="stylesheet" type="text/css" href="../dark.css">
  13. <link rel="stylesheet" type="text/css" href="../main.css" id="themeStyle">
  14. <script src="../storage.js"></script>
  15. </head>
  16. <body class="rustdoc struct">
  17. <!--[if lte IE 8]>
  18. <div class="warning">
  19. This old browser is unsupported and will most likely display funky
  20. things.
  21. </div>
  22. <![endif]-->
  23. <nav class="sidebar">
  24. <div class="sidebar-menu">&#9776;</div>
  25. <p class='location'>Struct Backtrace</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.new_unresolved">new_unresolved</a><a href="#method.frames">frames</a><a href="#method.resolve">resolve</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-From%3CVec%3CBacktraceFrame%3E%3E">From&lt;Vec&lt;BacktraceFrame&gt;&gt;</a><a href="#impl-Into%3CVec%3CBacktraceFrame%3E%3E">Into&lt;Vec&lt;BacktraceFrame&gt;&gt;</a><a href="#impl-Debug">Debug</a><a href="#impl-Default">Default</a></div></div><p class='location'><a href='index.html'>backtrace</a></p><script>window.sidebarCurrent = {name: 'Backtrace', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
  26. </nav>
  27. <div class="theme-picker">
  28. <button id="theme-picker" aria-label="Pick another theme!">
  29. <img src="../brush.svg" width="18" alt="Pick another theme!">
  30. </button>
  31. <div id="theme-choices"></div>
  32. </div>
  33. <script src="../theme.js"></script>
  34. <nav class="sub">
  35. <form class="search-form js-only">
  36. <div class="search-container">
  37. <input class="search-input" name="search"
  38. autocomplete="off"
  39. placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
  40. type="search">
  41. </div>
  42. </form>
  43. </nav>
  44. <section id='main' class="content">
  45. <h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>backtrace</a>::<wbr><a class="struct" href=''>Backtrace</a></span><span class='out-of-band'><span id='render-detail'>
  46. <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
  47. [<span class='inner'>&#x2212;</span>]
  48. </a>
  49. </span><a class='srclink' href='../src/backtrace/capture.rs.html#15-17' title='goto source code'>[src]</a></span></h1>
  50. <pre class='rust struct'>pub struct Backtrace { /* fields omitted */ }</pre><div class='docblock'><p>Representation of an owned and self-contained backtrace.</p>
  51. <p>This structure can be used to capture a backtrace at various points in a
  52. program and later used to inspect what the backtrace was at that time.</p>
  53. </div>
  54. <h2 id='methods' class='small-section-header'>
  55. Methods<a href='#methods' class='anchor'></a>
  56. </h2>
  57. <h3 id='impl' class='impl'><span class='in-band'><code>impl <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#46-128' title='goto source code'>[src]</a></span></h3>
  58. <div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><code>pub fn <a href='#method.new' class='fnname'>new</a>() -&gt; <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#62-66' title='goto source code'>[src]</a></span></h4>
  59. <div class='docblock'><p>Captures a backtrace at the callsite of this function, returning an
  60. owned representation.</p>
  61. <p>This function is useful for representing a backtrace as an object in
  62. Rust. This returned value can be sent across threads and printed
  63. elsewhere, and the purpose of this value is to be entirely self
  64. contained.</p>
  65. <h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
  66. <pre class="rust rust-example-rendered">
  67. <span class="kw">use</span> <span class="ident">backtrace</span>::<span class="ident">Backtrace</span>;
  68. <span class="kw">let</span> <span class="ident">current_backtrace</span> <span class="op">=</span> <span class="ident">Backtrace</span>::<span class="ident">new</span>();</pre>
  69. </div><h4 id='method.new_unresolved' class="method"><span id='new_unresolved.v' class='invisible'><code>pub fn <a href='#method.new_unresolved' class='fnname'>new_unresolved</a>() -&gt; <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#86-98' title='goto source code'>[src]</a></span></h4>
  70. <div class='docblock'><p>Similar to <code>new</code> except that this does not resolve any symbols, this
  71. simply captures the backtrace as a list of addresses.</p>
  72. <p>At a later time the <code>resolve</code> function can be called to resolve this
  73. backtrace's symbols into readable names. This function exists because
  74. the resolution process can sometimes take a significant amount of time
  75. whereas any one backtrace may only be rarely printed.</p>
  76. <h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1>
  77. <pre class="rust rust-example-rendered">
  78. <span class="kw">use</span> <span class="ident">backtrace</span>::<span class="ident">Backtrace</span>;
  79. <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">current_backtrace</span> <span class="op">=</span> <span class="ident">Backtrace</span>::<span class="ident">new_unresolved</span>();
  80. <span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;{:?}&quot;</span>, <span class="ident">current_backtrace</span>); <span class="comment">// no symbol names</span>
  81. <span class="ident">current_backtrace</span>.<span class="ident">resolve</span>();
  82. <span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;{:?}&quot;</span>, <span class="ident">current_backtrace</span>); <span class="comment">// symbol names now present</span></pre>
  83. </div><h4 id='method.frames' class="method"><span id='frames.v' class='invisible'><code>pub fn <a href='#method.frames' class='fnname'>frames</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="struct" href="../backtrace/struct.BacktraceFrame.html" title="struct backtrace::BacktraceFrame">BacktraceFrame</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#105-107' title='goto source code'>[src]</a></span></h4>
  84. <div class='docblock'><p>Returns the frames from when this backtrace was captured.</p>
  85. <p>The first entry of this slice is likely the function <code>Backtrace::new</code>,
  86. and the last frame is likely something about how this thread or the main
  87. function started.</p>
  88. </div><h4 id='method.resolve' class="method"><span id='resolve.v' class='invisible'><code>pub fn <a href='#method.resolve' class='fnname'>resolve</a>(&amp;mut self)</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#114-127' title='goto source code'>[src]</a></span></h4>
  89. <div class='docblock'><p>If this backtrace was created from <code>new_unresolved</code> then this function
  90. will resolve all addresses in the backtrace to their symbolic names.</p>
  91. <p>If this backtrace has been previously resolved or was created through
  92. <code>new</code>, this function does nothing.</p>
  93. </div></div>
  94. <h2 id='implementations' class='small-section-header'>
  95. Trait Implementations<a href='#implementations' class='anchor'></a>
  96. </h2>
  97. <h3 id='impl-Clone' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code><a href='#impl-Clone' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#12' title='goto source code'>[src]</a></span></h3>
  98. <div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#12' title='goto source code'>[src]</a></span></h4>
  99. <div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
  100. </div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>Self)</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#112-114' title='goto source code'>[src]</a></span></h4>
  101. <div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
  102. </div></div><h3 id='impl-From%3CVec%3CBacktraceFrame%3E%3E' class='impl'><span class='in-band'><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="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="../backtrace/struct.BacktraceFrame.html" title="struct backtrace::BacktraceFrame">BacktraceFrame</a>&gt;&gt; for <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code><a href='#impl-From%3CVec%3CBacktraceFrame%3E%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#130-136' title='goto source code'>[src]</a></span></h3>
  103. <div class='impl-items'><h4 id='method.from' class="method"><span id='from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(frames: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="../backtrace/struct.BacktraceFrame.html" title="struct backtrace::BacktraceFrame">BacktraceFrame</a>&gt;) -&gt; Self</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#131-135' title='goto source code'>[src]</a></span></h4>
  104. <div class='docblock'><p>Performs the conversion.</p>
  105. </div></div><h3 id='impl-Into%3CVec%3CBacktraceFrame%3E%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="../backtrace/struct.BacktraceFrame.html" title="struct backtrace::BacktraceFrame">BacktraceFrame</a>&gt;&gt; for <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code><a href='#impl-Into%3CVec%3CBacktraceFrame%3E%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#138-142' title='goto source code'>[src]</a></span></h3>
  106. <div class='impl-items'><h4 id='method.into' class="method"><span id='into.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="../backtrace/struct.BacktraceFrame.html" title="struct backtrace::BacktraceFrame">BacktraceFrame</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#139-141' title='goto source code'>[src]</a></span></h4>
  107. <div class='docblock'><p>Performs the conversion.</p>
  108. </div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><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="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#191-231' title='goto source code'>[src]</a></span></h3>
  109. <div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, fmt: &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><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#192-230' title='goto source code'>[src]</a></span></h4>
  110. <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>
  111. </div></div><h3 id='impl-Default' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code><a href='#impl-Default' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#233-237' title='goto source code'>[src]</a></span></h3>
  112. <div class='impl-items'><h4 id='method.default' class="method"><span id='default.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default' class='fnname'>default</a>() -&gt; <a class="struct" href="../backtrace/struct.Backtrace.html" title="struct backtrace::Backtrace">Backtrace</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/backtrace/capture.rs.html#234-236' title='goto source code'>[src]</a></span></h4>
  113. <div class='docblock'><p>Returns the &quot;default value&quot; for a type. <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default">Read more</a></p>
  114. </div></div></section>
  115. <section id='search' class="content hidden"></section>
  116. <section class="footer"></section>
  117. <aside id="help" class="hidden">
  118. <div>
  119. <h1 class="hidden">Help</h1>
  120. <div class="shortcuts">
  121. <h2>Keyboard Shortcuts</h2>
  122. <dl>
  123. <dt><kbd>?</kbd></dt>
  124. <dd>Show this help dialog</dd>
  125. <dt><kbd>S</kbd></dt>
  126. <dd>Focus the search field</dd>
  127. <dt><kbd>↑</kbd></dt>
  128. <dd>Move up in search results</dd>
  129. <dt><kbd>↓</kbd></dt>
  130. <dd>Move down in search results</dd>
  131. <dt><kbd>↹</kbd></dt>
  132. <dd>Switch tab</dd>
  133. <dt><kbd>&#9166;</kbd></dt>
  134. <dd>Go to active search result</dd>
  135. <dt><kbd>+</kbd></dt>
  136. <dd>Expand all sections</dd>
  137. <dt><kbd>-</kbd></dt>
  138. <dd>Collapse all sections</dd>
  139. </dl>
  140. </div>
  141. <div class="infos">
  142. <h2>Search Tricks</h2>
  143. <p>
  144. Prefix searches with a type followed by a colon (e.g.
  145. <code>fn:</code>) to restrict the search to a given type.
  146. </p>
  147. <p>
  148. Accepted types are: <code>fn</code>, <code>mod</code>,
  149. <code>struct</code>, <code>enum</code>,
  150. <code>trait</code>, <code>type</code>, <code>macro</code>,
  151. and <code>const</code>.
  152. </p>
  153. <p>
  154. Search functions by type signature (e.g.
  155. <code>vec -> usize</code> or <code>* -> vec</code>)
  156. </p>
  157. </div>
  158. </div>
  159. </aside>
  160. <script>
  161. window.rootPath = "../";
  162. window.currentCrate = "backtrace";
  163. </script>
  164. <script src="../main.js"></script>
  165. <script defer src="../search-index.js"></script>
  166. </body>
  167. </html>