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12 lines
2.5 KiB
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12 lines
2.5 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Semantics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" C++ , library , parallel "/><meta name="keywords" content=" ISO C++ , library "/><meta name="keywords" content=" ISO C++ , runtime , library "/><link rel="home" href="../index.html" title="The GNU C++ Library"/><link rel="up" href="parallel_mode.html" title="Chapter 18. Parallel Mode"/><link rel="prev" href="parallel_mode.html" title="Chapter 18. Parallel Mode"/><link rel="next" href="bk01pt03ch18s03.html" title="Using"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 18. Parallel Mode</th><td align="right"> <a accesskey="n" href="bk01pt03ch18s03.html">Next</a></td></tr></table><hr/></div><div class="section" title="Semantics"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.parallel_mode.semantics"/>Semantics</h2></div></div></div><p> The parallel mode STL algorithms are currently not exception-safe,
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i.e. user-defined functors must not throw exceptions.
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Also, the order of execution is not guaranteed for some functions, of course.
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Therefore, user-defined functors should not have any concurrent side effects.
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</p><p> Since the current GCC OpenMP implementation does not support
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OpenMP parallel regions in concurrent threads,
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it is not possible to call parallel STL algorithm in
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concurrent threads, either.
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It might work with other compilers, though.</p></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><td align="center"><a accesskey="u" href="parallel_mode.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt03ch18s03.html">Next</a></td></tr><tr><td align="left" valign="top">Chapter 18. Parallel Mode </td><td align="center"><a accesskey="h" href="../index.html">Home</a></td><td align="right" valign="top"> Using</td></tr></table></div></body></html>
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