14 lines
2.9 KiB
HTML
14 lines
2.9 KiB
HTML
<html><head>
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<title>Executable size</title><link rel="stylesheet" href="boostbook.css" type="text/css"><meta name="generator" content="DocBook XSL-NS Stylesheets V1.75.2"><link rel="home" href="index.html" title="Meta State Machine (MSM)"><link rel="up" href="ch04.html" title="Chapter 4. Performance / Compilers"><link rel="prev" href="ch04.html" title="Chapter 4. Performance / Compilers"><link rel="next" href="ch04s03.html" title="Supported compilers"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Executable size</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch04.html">Prev</a> </td><th width="60%" align="center">Chapter 4. Performance / Compilers</th><td width="20%" align="right"> <a accesskey="n" href="ch04s03.html">Next</a></td></tr></table><hr></div><div class="sect1" title="Executable size"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d0e2816"></a>Executable size</h2></div></div></div><p>There are some worries that MSM generates huge code. Is it true? The 2
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compilers I tested disagree with this claim. On VC9, the test state machines
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used in the performance section produce executables of 14kB (for simple and
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eUML) and 21kB (for the composite). This includes the test code and iostreams.
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By comparison, an empty executable with iostreams generated by VC9 has a size of
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7kB. Boost.Statechart generates executables of 43kB and 54kB. As a bonus, eUML
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comes for “free” in terms of executable size. You even get a speed gain. With
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g++ 4.3, it strongly depends on the compiler options (much more than VC). A good
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size state machine with –O3 can generate an executable of 600kB, and with eUML
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you can get to 1.5MB. Trying with –Os –s I come down to 18kB and 30kB for the
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test state machines, while eUML will go down to 1MB (which is still big), so in
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this case eUML does not come for free.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch04.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ch04s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 4. Performance / Compilers </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Supported compilers</td></tr></table></div></body></html> |