ceph/src/boost/libs/context/doc/html/context/econtext/rationale.html

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  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="context.econtext.rationale"></a><a class="link" href="rationale.html" title="Rationale">Rationale</a>
  28 </h3></div></div></div>
  29 <div class="toc"><dl>
  30 <dt><span class="section"><a href="rationale/other_apis_.html">Other APIs
  31         </a></span></dt>
  32 <dt><span class="section"><a href="rationale/x86_and_floating_point_env.html">x86
  33         and floating-point env</a></span></dt>
  34 </dl></div>
  35 <h5>
  36 <a name="context.econtext.rationale.h0"></a>
  37         <span><a name="context.econtext.rationale.no_inline_assembler"></a></span><a class="link" href="rationale.html#context.econtext.rationale.no_inline_assembler">No
  38         inline-assembler</a>
  39       </h5>
  40 <p>
  41         Some newer compiler (for instance MSVC 10 for x86_64 and itanium) do not
  42         support inline assembler. <sup>[<a name="context.econtext.rationale.f0" href="#ftn.context.econtext.rationale.f0" class="footnote">1</a>]</sup>. Inlined assembler generates code bloating which is not welcome
  43         on embedded systems.
  44       </p>
  45 <h5>
  46 <a name="context.econtext.rationale.h1"></a>
  47         <span><a name="context.econtext.rationale.fcontext_t"></a></span><a class="link" href="rationale.html#context.econtext.rationale.fcontext_t">fcontext_t</a>
  48       </h5>
  49 <p>
  50         <span class="bold"><strong>Boost.Context</strong></span> provides the low level API
  51         fcontext_t which is implemented in assembler to provide context swapping
  52         operations. fcontext_t is the part to port to new platforms.
  53       </p>
  54 <div class="note"><table border="0" summary="Note">
  55 <tr>
  56 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../doc/src/images/note.png"></td>
  57 <th align="left">Note</th>
  58 </tr>
  59 <tr><td align="left" valign="top"><p>
  60           Context switches do not preserve the signal mask on UNIX systems.
  61         </p></td></tr>
  62 </table></div>
  63 <p>
  64         <span class="emphasis"><em>fcontext_t</em></span> is an opaque pointer.
  65       </p>
  66 <div class="footnotes">
  67 <br><hr width="100" align="left">
  68 <div class="footnote"><p><sup>[<a name="ftn.context.econtext.rationale.f0" href="#context.econtext.rationale.f0" class="para">1</a>] </sup>
  69           <a href="http://msdn.microsoft.com/en-us/library/4ks26t93.aspx" target="_top">MSDN
  70           article 'Inline Assembler'</a>
  71         </p></div>
  72 </div>
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  75 <td align="left"></td>
  76 <td align="right"><div class="copyright-footer">Copyright &#169; 2014 Oliver Kowalke<p>
  77         Distributed under the Boost Software License, Version 1.0. (See accompanying
  78         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
  79       </p>
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