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

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  26 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
  27 <a name="context.rationale"></a><a class="link" href="rationale.html" title="Rationale">Rationale</a>
  28 </h2></div></div></div>
  29 <div class="toc"><dl>
  30 <dt><span class="section"><a href="rationale/other_apis_.html">Other APIs </a></span></dt>
  31 <dt><span class="section"><a href="rationale/x86_and_floating_point_env.html">x86 and
  32       floating-point env</a></span></dt>
  33 </dl></div>
  34 <h4>
  35 <a name="context.rationale.h0"></a>
  36       <span><a name="context.rationale.no_inline_assembler"></a></span><a class="link" href="rationale.html#context.rationale.no_inline_assembler">No
  37       inline-assembler</a>
  38     </h4>
  39 <p>
  40       Some newer compiler (for instance MSVC 10 for x86_64 and itanium) do not support
  41       inline assembler. <sup>[<a name="context.rationale.f0" href="#ftn.context.rationale.f0" class="footnote">1</a>]</sup>. Inlined assembler generates code bloating which is not welcome
  42       on embedded systems.
  43     </p>
  44 <h4>
  45 <a name="context.rationale.h1"></a>
  46       <span><a name="context.rationale.fcontext_t"></a></span><a class="link" href="rationale.html#context.rationale.fcontext_t">fcontext_t</a>
  47     </h4>
  48 <p>
  49       <span class="bold"><strong>Boost.Context</strong></span> provides the low level API fcontext_t
  50       which is implemented in assembler to provide context swapping operations. fcontext_t
  51       is the part to port to new platforms.
  52     </p>
  53 <div class="note"><table border="0" summary="Note">
  54 <tr>
  55 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../doc/src/images/note.png"></td>
  56 <th align="left">Note</th>
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  58 <tr><td align="left" valign="top"><p>
  59         Context switches do not preserve the signal mask on UNIX systems.
  60       </p></td></tr>
  61 </table></div>
  62 <p>
  63       <span class="emphasis"><em>fcontext_t</em></span> is an opaque pointer.
  64     </p>
  65 <div class="footnotes">
  66 <br><hr width="100" align="left">
  67 <div class="footnote"><p><sup>[<a name="ftn.context.rationale.f0" href="#context.rationale.f0" class="para">1</a>] </sup>
  68         <a href="http://msdn.microsoft.com/en-us/library/4ks26t93.aspx" target="_top">MSDN article
  69         'Inline Assembler'</a>
  70       </p></div>
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  74 <td align="left"></td>
  75 <td align="right"><div class="copyright-footer">Copyright &#169; 2014 Oliver Kowalke<p>
  76         Distributed under the Boost Software License, Version 1.0. (See accompanying
  77         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>)
  78       </p>
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