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Daniel Veillard8f40f1e2002-08-28 21:18:45 +000019<a href="http://www.gnome.org/"><img src="gnome2.png" alt="Gnome2 Logo"></a><a href="http://www.w3.org/Status"><img src="w3c.png" alt="W3C Logo"></a><a href="http://www.redhat.com/"><img src="redhat.gif" alt="Red Hat Logo"></a><div align="left"><a href="http://xmlsoft.org/"><img src="Libxml2-Logo-180x168.gif" alt="Made with Libxml2 Logo"></a></div>
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22<h1>The XML C library for Gnome</h1>
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Daniel Veillard63d83142002-05-20 06:51:05 +000096<p>Starting with 2.4.7, libxml makes provisions to ensure that concurrent
Daniel Veillard52dcab32001-10-30 12:51:17 +000097threads can safely work in parallel parsing different documents. There is
98however a couple of things to do to ensure it:</p>
99<ul>
100<li>configure the library accordingly using the --with-threads options</li>
Daniel Veillard0b28e882002-07-24 23:47:05 +0000101 <li>call xmlInitParser() in the &quot;main&quot; thread before using any of the
Daniel Veillard52dcab32001-10-30 12:51:17 +0000102 libxml API (except possibly selecting a different memory allocator)</li>
103</ul>
104<p>Note that the thread safety cannot be ensured for multiple threads sharing
105the same document, the locking must be done at the application level, libxml
106exports a basic mutex and reentrant mutexes API in &lt;libxml/threads.h&gt;.
107The parts of the library checked for thread safety are:</p>
108<ul>
109<li>concurrent loading</li>
Daniel Veillard0b28e882002-07-24 23:47:05 +0000110 <li>file access resolution</li>
111 <li>catalog access</li>
112 <li>catalog building</li>
113 <li>entities lookup/accesses</li>
114 <li>validation</li>
115 <li>global variables per-thread override</li>
116 <li>memory handling</li>
Daniel Veillard52dcab32001-10-30 12:51:17 +0000117</ul>
118<p>XPath is supposed to be thread safe now, but this wasn't tested
119seriously.</p>
Daniel Veillard3f4c40f2002-02-13 09:19:28 +0000120<p><a href="bugs.html">Daniel Veillard</a></p>
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