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107 lines
4.5 KiB
HTML
107 lines
4.5 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>Incompatibilities (GNU gprof)</title>
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<meta name="description" content="Incompatibilities (GNU gprof)">
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<meta name="keywords" content="Incompatibilities (GNU gprof)">
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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="index.html#Top" rel="up" title="Top">
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<link href="Details.html#Details" rel="next" title="Details">
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<link href="How-do-I_003f.html#How-do-I_003f" rel="prev" title="How do I?">
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</style>
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</head>
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<body lang="en">
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<a name="Incompatibilities"></a>
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<div class="header">
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<p>
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Next: <a href="Details.html#Details" accesskey="n" rel="next">Details</a>, Previous: <a href="How-do-I_003f.html#How-do-I_003f" accesskey="p" rel="prev">How do I?</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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="Incompatibilities-with-Unix-gprof"></a>
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<h2 class="chapter">8 Incompatibilities with Unix <code>gprof</code></h2>
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<p><small>GNU</small> <code>gprof</code> and Berkeley Unix <code>gprof</code> use the same data
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file <samp>gmon.out</samp>, and provide essentially the same information. But
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there are a few differences.
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</p>
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<ul>
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<li> <small>GNU</small> <code>gprof</code> uses a new, generalized file format with support
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for basic-block execution counts and non-realtime histograms. A magic
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cookie and version number allows <code>gprof</code> to easily identify
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new style files. Old BSD-style files can still be read.
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See <a href="File-Format.html#File-Format">Profiling Data File Format</a>.
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</li><li> For a recursive function, Unix <code>gprof</code> lists the function as a
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parent and as a child, with a <code>calls</code> field that lists the number
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of recursive calls. <small>GNU</small> <code>gprof</code> omits these lines and puts
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the number of recursive calls in the primary line.
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</li><li> When a function is suppressed from the call graph with ‘<samp>-e</samp>’, <small>GNU</small>
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<code>gprof</code> still lists it as a subroutine of functions that call it.
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</li><li> <small>GNU</small> <code>gprof</code> accepts the ‘<samp>-k</samp>’ with its argument
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in the form ‘<samp>from/to</samp>’, instead of ‘<samp>from to</samp>’.
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</li><li> In the annotated source listing,
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if there are multiple basic blocks on the same line,
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<small>GNU</small> <code>gprof</code> prints all of their counts, separated by commas.
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</li><li> The blurbs, field widths, and output formats are different. <small>GNU</small>
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<code>gprof</code> prints blurbs after the tables, so that you can see the
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tables without skipping the blurbs.
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</li></ul>
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</body>
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</html>
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