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130 lines
5.3 KiB
HTML
130 lines
5.3 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the gprof profiler of the GNU system.
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Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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-->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Subroutines (GNU gprof)</title>
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<meta name="description" content="Subroutines (GNU gprof)">
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<meta name="keywords" content="Subroutines (GNU gprof)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Call-Graph.html#Call-Graph" rel="up" title="Call Graph">
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<link href="Cycles.html#Cycles" rel="next" title="Cycles">
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<link href="Callers.html#Callers" rel="prev" title="Callers">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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div.example {margin-left: 3.2em}
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kbd {font-style: oblique}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Subroutines"></a>
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<div class="header">
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<p>
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Next: <a href="Cycles.html#Cycles" accesskey="n" rel="next">Cycles</a>, Previous: <a href="Callers.html#Callers" accesskey="p" rel="prev">Callers</a>, Up: <a href="Call-Graph.html#Call-Graph" accesskey="u" rel="up">Call Graph</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p>
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</div>
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<hr>
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<a name="Lines-for-a-Function_0027s-Subroutines"></a>
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<h4 class="subsection">5.2.3 Lines for a Function’s Subroutines</h4>
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<p>A function’s entry has a line for each of its subroutines—in other
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words, a line for each other function that it called. These lines’
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fields correspond to the fields of the primary line, but their meanings
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are different because of the difference in context.
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</p>
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<p>For reference, we repeat two lines from the entry for the function
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<code>main</code>, the primary line and a line for a subroutine, together
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with the heading line that shows the names of the fields:
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</p>
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<div class="smallexample">
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<pre class="smallexample">index % time self children called name
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…
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[2] 100.0 0.00 0.05 1 main [2]
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0.00 0.05 1/1 report [3]
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</pre></div>
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<p>Here are the meanings of the fields in the subroutine-line for <code>main</code>
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calling <code>report</code>:
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</p>
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<dl compact="compact">
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<dt><code>self</code></dt>
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<dd><p>An estimate of the amount of time spent directly within <code>report</code>
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when <code>report</code> was called from <code>main</code>.
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</p>
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</dd>
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<dt><code>children</code></dt>
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<dd><p>An estimate of the amount of time spent in subroutines of <code>report</code>
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when <code>report</code> was called from <code>main</code>.
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</p>
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<p>The sum of the <code>self</code> and <code>children</code> fields is an estimate
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of the total time spent in calls to <code>report</code> from <code>main</code>.
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</p>
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</dd>
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<dt><code>called</code></dt>
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<dd><p>Two numbers, the number of calls to <code>report</code> from <code>main</code>
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followed by the total number of non-recursive calls to <code>report</code>.
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This ratio is used to determine how much of <code>report</code>’s <code>self</code>
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and <code>children</code> time gets credited to <code>main</code>.
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See <a href="Assumptions.html#Assumptions">Estimating <code>children</code> Times</a>.
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</p>
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</dd>
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<dt><code>name</code></dt>
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<dd><p>The name of the subroutine of <code>main</code> to which this line applies,
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followed by the subroutine’s index number.
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</p>
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<p>If the caller is part of a recursion cycle, the cycle number is
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printed between the name and the index number.
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</p></dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Cycles.html#Cycles" accesskey="n" rel="next">Cycles</a>, Previous: <a href="Callers.html#Callers" accesskey="p" rel="prev">Callers</a>, Up: <a href="Call-Graph.html#Call-Graph" accesskey="u" rel="up">Call Graph</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p>
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</div>
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</body>
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</html>
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