22 lines
6.6 KiB
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22 lines
6.6 KiB
HTML
<!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 `malloc_stats_print` fn in crate `jemalloc_sys`."><meta name="keywords" content="rust, rustlang, rust-lang, malloc_stats_print"><title>jemalloc_sys::malloc_stats_print - 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><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="shortcut icon" href="../favicon.ico"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc fn"><!--[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">☰</div><a href='../jemalloc_sys/index.html'><div class='logo-container'><img src='../rust-logo.png' alt='logo'></div></a><div class="sidebar-elems"><p class='location'><a href='index.html'>jemalloc_sys</a></p><script>window.sidebarCurrent = {name: 'malloc_stats_print', ty: 'fn', 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"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><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='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../src/jemalloc_sys/lib.rs.html#535-539' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='index.html'>jemalloc_sys</a>::<wbr><a class="fn" href=''>malloc_stats_print</a></span></h1><pre class='rust fn'>pub unsafe extern "C" fn malloc_stats_print(<br> write_cb: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><unsafe extern "C" fn(_: *mut <a class="enum" href="https://doc.rust-lang.org/nightly/core/ffi/enum.c_void.html" title="enum core::ffi::c_void">c_void</a>, _: *const <a class="type" href="../libc/unix/linux_like/linux/gnu/b64/x86_64/type.c_char.html" title="type libc::unix::linux_like::linux::gnu::b64::x86_64::c_char">c_char</a>)>, <br> cbopaque: *mut <a class="enum" href="https://doc.rust-lang.org/nightly/core/ffi/enum.c_void.html" title="enum core::ffi::c_void">c_void</a>, <br> opts: *const <a class="type" href="../libc/unix/linux_like/linux/gnu/b64/x86_64/type.c_char.html" title="type libc::unix::linux_like::linux::gnu::b64::x86_64::c_char">c_char</a><br>)</pre><div class='docblock'><p>Writes summary statistics via the <code>write_cb</code> callback function pointer
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and <code>cbopaque</code> data passed to <code>write_cb</code>, or <a href="../jemalloc_sys/static.malloc_message.html" title="`malloc_message`"><code>malloc_message</code></a> if <code>write_cb</code>
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is null.</p>
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<p>The statistics are presented in human-readable form unless “J”
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is specified as a character within the opts string, in which case the
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statistics are presented in JSON format.</p>
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<p>This function can be called repeatedly.</p>
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<p>General information that never changes during execution can be omitted
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by specifying <code>g</code> as a character within the opts string.</p>
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<p>Note that <a href="../jemalloc_sys/static.malloc_message.html" title="`malloc_message`"><code>malloc_message</code></a> uses the <code>mallctl*</code> functions internally,
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so inconsistent statistics can be reported if multiple threads use these
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functions simultaneously.</p>
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<p>If the Cargo feature <code>stats</code> is enabled, <code>m</code>, <code>d</code>, and <code>a</code> can be
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specified to omit merged arena, destroyed merged arena, and per arena
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statistics, respectively; <code>b</code> and <code>l</code> can be specified to omit per size
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class statistics for bins and large objects, respectively; <code>x</code> can be
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specified to omit all mutex statistics. Unrecognized characters are
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silently ignored.</p>
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<p>Note that thread caching may prevent some statistics from being
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completely up to date, since extra locking would be required to merge
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counters that track thread cache operations.</p>
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