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<!DOCTYPE html>
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<title>class RubyProf::DotPrinter - ruby-prof</title>
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<h3>Parent</h3>
<p class="link"><a href="AbstractPrinter.html">RubyProf::AbstractPrinter</a>
</div>
<!-- Method Quickref -->
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<h3>Methods</h3>
<ul class="link-list" role="directory">
<li class="calls-super" ><a href="#method-c-new">::new</a>
<li ><a href="#method-i-print">#print</a>
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<main role="main" aria-labelledby="class-RubyProf::DotPrinter">
<h1 id="class-RubyProf::DotPrinter" class="class">
class RubyProf::DotPrinter
</h1>
<section class="description">
<p>Generates a graphviz graph in dot format. To use the dot printer:</p>
<pre>result = RubyProf.profile do
[code to profile]
end
printer = RubyProf::DotPrinter.new(result)
printer.print(STDOUT)</pre>
<p>You can use either dot viewer such as GraphViz, or the dot command line
tool to reformat the output into a wide variety of outputs:</p>
<pre>dot -Tpng graph.dot > graph.png</pre>
</section>
<section id="5Buntitled-5D" class="documentation-section">
<section class="constants-list">
<header>
<h3>Constants</h3>
</header>
<dl>
<dt id="CLASS_COLOR">CLASS_COLOR
<dd>
<dt id="EDGE_COLOR">EDGE_COLOR
<dd>
</dl>
</section>
<section id="public-class-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Class Methods</h3>
</header>
<div id="method-c-new" class="method-detail ">
<div class="method-heading">
<span class="method-name">new</span><span
class="method-args">(result)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Creates the <a href="DotPrinter.html">DotPrinter</a> using a
RubyProf::Proile.</p>
<div class="method-calls-super">
Calls superclass method
<a href="AbstractPrinter.html#method-c-new">RubyProf::AbstractPrinter.new</a>
</div>
<div class="method-source-code" id="new-source">
<pre><span class="ruby-comment"># File lib/ruby-prof/printers/dot_printer.rb, line 25</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">result</span>)
<span class="ruby-keyword">super</span>(<span class="ruby-identifier">result</span>)
<span class="ruby-ivar">@seen_methods</span> = <span class="ruby-constant">Set</span>.<span class="ruby-identifier">new</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
</section>
<section id="public-instance-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Instance Methods</h3>
</header>
<div id="method-i-print" class="method-detail ">
<div class="method-heading">
<span class="method-name">print</span><span
class="method-args">(output = STDOUT, options = {})</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Print a graph report to the provided output.</p>
<p>output - Any IO object, including STDOUT or a file. The default value is
STDOUT.</p>
<p>options - Hash of print options. See <a
href="AbstractPrinter.html#method-i-setup_options">setup_options</a> for
more information.</p>
<p>When profiling results that cover a large number of method calls it helps
to use the :min_percent option, for example:</p>
<pre class="ruby"><span class="ruby-constant">DotPrinter</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">result</span>).<span class="ruby-identifier">print</span>(<span class="ruby-constant">STDOUT</span>, :<span class="ruby-identifier">min_percent=</span><span class="ruby-operator">></span><span class="ruby-value">5</span>)
</pre>
<div class="method-source-code" id="print-source">
<pre><span class="ruby-comment"># File lib/ruby-prof/printers/dot_printer.rb, line 43</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">print</span>(<span class="ruby-identifier">output</span> = <span class="ruby-constant">STDOUT</span>, <span class="ruby-identifier">options</span> = {})
<span class="ruby-ivar">@output</span> = <span class="ruby-identifier">output</span>
<span class="ruby-identifier">setup_options</span>(<span class="ruby-identifier">options</span>)
<span class="ruby-identifier">puts</span> <span class="ruby-string">'digraph "Profile" {'</span>
<span class="ruby-comment">#puts "label=\"#{mode_name} >=#{min_percent}%\\nTotal: #{total_time}\";"</span>
<span class="ruby-identifier">puts</span> <span class="ruby-string">"labelloc=t;"</span>
<span class="ruby-identifier">puts</span> <span class="ruby-string">"labeljust=l;"</span>
<span class="ruby-identifier">print_threads</span>
<span class="ruby-identifier">puts</span> <span class="ruby-string">'}'</span>
<span class="ruby-keyword">end</span></pre>
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