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| <title>GNU gprof: Output Options</title> |
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| <a name="Output-Options"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="Analysis-Options.html#Analysis-Options" accesskey="n" rel="next">Analysis Options</a>, Up: <a href="Invoking.html#Invoking" accesskey="u" rel="up">Invoking</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> |
| </div> |
| <hr> |
| <a name="Output-Options-1"></a> |
| <h3 class="section">4.1 Output Options</h3> |
| |
| <p>These options specify which of several output formats |
| <code>gprof</code> should produce. |
| </p> |
| <p>Many of these options take an optional <em>symspec</em> to specify |
| functions to be included or excluded. These options can be |
| specified multiple times, with different symspecs, to include |
| or exclude sets of symbols. See <a href="Symspecs.html#Symspecs">Symspecs</a>. |
| </p> |
| <p>Specifying any of these options overrides the default (‘<samp>-p -q</samp>’), |
| which prints a flat profile and call graph analysis |
| for all functions. |
| </p> |
| <dl compact="compact"> |
| <dt><code>-A[<var>symspec</var>]</code></dt> |
| <dt><code>--annotated-source[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-A</samp>’ option causes <code>gprof</code> to print annotated source code. |
| If <var>symspec</var> is specified, print output only for matching symbols. |
| See <a href="Annotated-Source.html#Annotated-Source">The Annotated Source Listing</a>. |
| </p> |
| </dd> |
| <dt><code>-b</code></dt> |
| <dt><code>--brief</code></dt> |
| <dd><p>If the ‘<samp>-b</samp>’ option is given, <code>gprof</code> doesn’t print the |
| verbose blurbs that try to explain the meaning of all of the fields in |
| the tables. This is useful if you intend to print out the output, or |
| are tired of seeing the blurbs. |
| </p> |
| </dd> |
| <dt><code>-C[<var>symspec</var>]</code></dt> |
| <dt><code>--exec-counts[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-C</samp>’ option causes <code>gprof</code> to |
| print a tally of functions and the number of times each was called. |
| If <var>symspec</var> is specified, print tally only for matching symbols. |
| </p> |
| <p>If the profile data file contains basic-block count records, specifying |
| the ‘<samp>-l</samp>’ option, along with ‘<samp>-C</samp>’, will cause basic-block |
| execution counts to be tallied and displayed. |
| </p> |
| </dd> |
| <dt><code>-i</code></dt> |
| <dt><code>--file-info</code></dt> |
| <dd><p>The ‘<samp>-i</samp>’ option causes <code>gprof</code> to display summary information |
| about the profile data file(s) and then exit. The number of histogram, |
| call graph, and basic-block count records is displayed. |
| </p> |
| </dd> |
| <dt><code>-I <var>dirs</var></code></dt> |
| <dt><code>--directory-path=<var>dirs</var></code></dt> |
| <dd><p>The ‘<samp>-I</samp>’ option specifies a list of search directories in |
| which to find source files. Environment variable <var>GPROF_PATH</var> |
| can also be used to convey this information. |
| Used mostly for annotated source output. |
| </p> |
| </dd> |
| <dt><code>-J[<var>symspec</var>]</code></dt> |
| <dt><code>--no-annotated-source[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-J</samp>’ option causes <code>gprof</code> not to |
| print annotated source code. |
| If <var>symspec</var> is specified, <code>gprof</code> prints annotated source, |
| but excludes matching symbols. |
| </p> |
| </dd> |
| <dt><code>-L</code></dt> |
| <dt><code>--print-path</code></dt> |
| <dd><p>Normally, source filenames are printed with the path |
| component suppressed. The ‘<samp>-L</samp>’ option causes <code>gprof</code> |
| to print the full pathname of |
| source filenames, which is determined |
| from symbolic debugging information in the image file |
| and is relative to the directory in which the compiler |
| was invoked. |
| </p> |
| </dd> |
| <dt><code>-p[<var>symspec</var>]</code></dt> |
| <dt><code>--flat-profile[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-p</samp>’ option causes <code>gprof</code> to print a flat profile. |
| If <var>symspec</var> is specified, print flat profile only for matching symbols. |
| See <a href="Flat-Profile.html#Flat-Profile">The Flat Profile</a>. |
| </p> |
| </dd> |
| <dt><code>-P[<var>symspec</var>]</code></dt> |
| <dt><code>--no-flat-profile[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-P</samp>’ option causes <code>gprof</code> to suppress printing a flat profile. |
| If <var>symspec</var> is specified, <code>gprof</code> prints a flat profile, |
| but excludes matching symbols. |
| </p> |
| </dd> |
| <dt><code>-q[<var>symspec</var>]</code></dt> |
| <dt><code>--graph[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-q</samp>’ option causes <code>gprof</code> to print the call graph analysis. |
| If <var>symspec</var> is specified, print call graph only for matching symbols |
| and their children. |
| See <a href="Call-Graph.html#Call-Graph">The Call Graph</a>. |
| </p> |
| </dd> |
| <dt><code>-Q[<var>symspec</var>]</code></dt> |
| <dt><code>--no-graph[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-Q</samp>’ option causes <code>gprof</code> to suppress printing the |
| call graph. |
| If <var>symspec</var> is specified, <code>gprof</code> prints a call graph, |
| but excludes matching symbols. |
| </p> |
| </dd> |
| <dt><code>-t</code></dt> |
| <dt><code>--table-length=<var>num</var></code></dt> |
| <dd><p>The ‘<samp>-t</samp>’ option causes the <var>num</var> most active source lines in |
| each source file to be listed when source annotation is enabled. The |
| default is 10. |
| </p> |
| </dd> |
| <dt><code>-y</code></dt> |
| <dt><code>--separate-files</code></dt> |
| <dd><p>This option affects annotated source output only. |
| Normally, <code>gprof</code> prints annotated source files |
| to standard-output. If this option is specified, |
| annotated source for a file named <samp>path/<var>filename</var></samp> |
| is generated in the file <samp><var>filename</var>-ann</samp>. If the underlying |
| file system would truncate <samp><var>filename</var>-ann</samp> so that it |
| overwrites the original <samp><var>filename</var></samp>, <code>gprof</code> generates |
| annotated source in the file <samp><var>filename</var>.ann</samp> instead (if the |
| original file name has an extension, that extension is <em>replaced</em> |
| with <samp>.ann</samp>). |
| </p> |
| </dd> |
| <dt><code>-Z[<var>symspec</var>]</code></dt> |
| <dt><code>--no-exec-counts[=<var>symspec</var>]</code></dt> |
| <dd><p>The ‘<samp>-Z</samp>’ option causes <code>gprof</code> not to |
| print a tally of functions and the number of times each was called. |
| If <var>symspec</var> is specified, print tally, but exclude matching symbols. |
| </p> |
| </dd> |
| <dt><code>-r</code></dt> |
| <dt><code>--function-ordering</code></dt> |
| <dd><p>The ‘<samp>--function-ordering</samp>’ option causes <code>gprof</code> to print a |
| suggested function ordering for the program based on profiling data. |
| This option suggests an ordering which may improve paging, tlb and |
| cache behavior for the program on systems which support arbitrary |
| ordering of functions in an executable. |
| </p> |
| <p>The exact details of how to force the linker to place functions |
| in a particular order is system dependent and out of the scope of this |
| manual. |
| </p> |
| </dd> |
| <dt><code>-R <var>map_file</var></code></dt> |
| <dt><code>--file-ordering <var>map_file</var></code></dt> |
| <dd><p>The ‘<samp>--file-ordering</samp>’ option causes <code>gprof</code> to print a |
| suggested .o link line ordering for the program based on profiling data. |
| This option suggests an ordering which may improve paging, tlb and |
| cache behavior for the program on systems which do not support arbitrary |
| ordering of functions in an executable. |
| </p> |
| <p>Use of the ‘<samp>-a</samp>’ argument is highly recommended with this option. |
| </p> |
| <p>The <var>map_file</var> argument is a pathname to a file which provides |
| function name to object file mappings. The format of the file is similar to |
| the output of the program <code>nm</code>. |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">c-parse.o:00000000 T yyparse |
| c-parse.o:00000004 C yyerrflag |
| c-lang.o:00000000 T maybe_objc_method_name |
| c-lang.o:00000000 T print_lang_statistics |
| c-lang.o:00000000 T recognize_objc_keyword |
| c-decl.o:00000000 T print_lang_identifier |
| c-decl.o:00000000 T print_lang_type |
| … |
| |
| </pre></div> |
| |
| <p>To create a <var>map_file</var> with <small>GNU</small> <code>nm</code>, type a command like |
| <kbd>nm --extern-only --defined-only -v --print-file-name program-name</kbd>. |
| </p> |
| </dd> |
| <dt><code>-T</code></dt> |
| <dt><code>--traditional</code></dt> |
| <dd><p>The ‘<samp>-T</samp>’ option causes <code>gprof</code> to print its output in |
| “traditional” BSD style. |
| </p> |
| </dd> |
| <dt><code>-w <var>width</var></code></dt> |
| <dt><code>--width=<var>width</var></code></dt> |
| <dd><p>Sets width of output lines to <var>width</var>. |
| Currently only used when printing the function index at the bottom |
| of the call graph. |
| </p> |
| </dd> |
| <dt><code>-x</code></dt> |
| <dt><code>--all-lines</code></dt> |
| <dd><p>This option affects annotated source output only. |
| By default, only the lines at the beginning of a basic-block |
| are annotated. If this option is specified, every line in |
| a basic-block is annotated by repeating the annotation for the |
| first line. This behavior is similar to <code>tcov</code>’s ‘<samp>-a</samp>’. |
| </p> |
| </dd> |
| <dt><code>--demangle[=<var>style</var>]</code></dt> |
| <dt><code>--no-demangle</code></dt> |
| <dd><p>These options control whether C++ symbol names should be demangled when |
| printing output. The default is to demangle symbols. The |
| <code>--no-demangle</code> option may be used to turn off demangling. Different |
| compilers have different mangling styles. The optional demangling style |
| argument can be used to choose an appropriate demangling style for your |
| compiler. |
| </p></dd> |
| </dl> |
| |
| <hr> |
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| Next: <a href="Analysis-Options.html#Analysis-Options" accesskey="n" rel="next">Analysis Options</a>, Up: <a href="Invoking.html#Invoking" accesskey="u" rel="up">Invoking</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> |
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