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< title > Thread safety< / title >
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< h1 > The XML C library for Gnome< / h1 >
< h2 > Thread safety< / h2 >
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< p > Starting with 2.4.7, libxml makes provisions to ensure that concurrent
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threads can safely work in parallel parsing different documents. There is
however a couple of things to do to ensure it:< / p >
< ul >
< li > configure the library accordingly using the --with-threads options< / li >
< li > call xmlInitParser() in the " main" thread before using any of the
libxml API (except possibly selecting a different memory allocator)< / li >
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< p > Note that the thread safety cannot be ensured for multiple threads sharing
the same document, the locking must be done at the application level, libxml
exports a basic mutex and reentrant mutexes API in < libxml/threads.h> .
The parts of the library checked for thread safety are:< / p >
< ul >
< li > concurrent loading< / li >
< li > file access resolution< / li >
< li > catalog access< / li >
< li > catalog building< / li >
< li > entities lookup/accesses< / li >
< li > validation< / li >
< li > global variables per-thread override< / li >
< li > memory handling< / li >
< / ul >
< p > XPath is supposed to be thread safe now, but this wasn't tested
seriously.< / p >
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< p > < a href = "bugs.html" > Daniel Veillard< / a > < / p >
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