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<para>Mutual exclusion object. </para>
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<para>Reentrant mutual exclusion object. </para>
        </briefdescription>
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        <name>xmlCheckThreadLocalStorage</name>
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          <type>void</type>
        </param>
        <briefdescription>
<para>Check whether thread-local storage could be allocated. </para>
        </briefdescription>
        <detaileddescription>
<para>In cross-platform code running in multithreaded environments, this function should be called once in each thread before calling other library functions to make sure that thread-local storage was allocated properly.</para>
<para><simplesect kind="since"><para>2.12.0 </para>
</simplesect>
<simplesect kind="return"><para>0 on success or -1 if a memory allocation failed. A failed allocation signals a typically fatal and irrecoverable out-of-memory situation. Don&apos;t call any library functions in this case. </para>
</simplesect>
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        <definition>xmlMutex * xmlNewMutex</definition>
        <argsstring>(void)</argsstring>
        <name>xmlNewMutex</name>
        <param>
          <type>void</type>
        </param>
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<para>xmlNewMutex is used to allocate a libxml2 token struct for use in synchronizing access to data. </para>
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<para><simplesect kind="return"><para>a new simple mutex pointer or NULL in case of error </para>
</simplesect>
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        <name>xmlMutexLock</name>
        <param>
          <type><ref refid="threads_8h_1a65cb9dc91b670770a3725773fd5a4df7" kindref="member">xmlMutex</ref> *</type>
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<para>xmlMutexLock is used to lock a libxml2 token. </para>
        </briefdescription>
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<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>tok</parametername>
</parameternamelist>
<parameterdescription>
<para>the simple mutex </para>
</parameterdescription>
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        <definition>void xmlMutexUnlock</definition>
        <argsstring>(xmlMutex *tok)</argsstring>
        <name>xmlMutexUnlock</name>
        <param>
          <type><ref refid="threads_8h_1a65cb9dc91b670770a3725773fd5a4df7" kindref="member">xmlMutex</ref> *</type>
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<para>xmlMutexUnlock is used to unlock a libxml2 token. </para>
        </briefdescription>
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<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>tok</parametername>
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<parameterdescription>
<para>the simple mutex </para>
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<para>Free a mutex. </para>
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<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>tok</parametername>
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<parameterdescription>
<para>the simple mutex </para>
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        <param>
          <type>void</type>
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<para>Used to allocate a reentrant mutex for use in synchronizing access to data. </para>
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<para>token_r is a re-entrant lock and thus useful for synchronizing access to data structures that may be manipulated in a recursive fashion.</para>
<para><simplesect kind="return"><para>the new reentrant mutex pointer or NULL in case of error </para>
</simplesect>
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<para>xmlRMutexLock is used to lock a libxml2 token_r. </para>
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<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>tok</parametername>
</parameternamelist>
<parameterdescription>
<para>the reentrant mutex </para>
</parameterdescription>
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        <name>xmlRMutexUnlock</name>
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<para>xmlRMutexUnlock is used to unlock a libxml2 token_r. </para>
        </briefdescription>
        <detaileddescription>
<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>tok</parametername>
</parameternamelist>
<parameterdescription>
<para>the reentrant mutex </para>
</parameterdescription>
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<para>Used to reclaim resources associated with a reentrant mutex. </para>
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<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>tok</parametername>
</parameternamelist>
<parameterdescription>
<para>the reentrant mutex </para>
</parameterdescription>
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<para><xrefsect id="deprecated_1_deprecated000298"><xreftitle>Deprecated</xreftitle><xrefdescription><para>Alias for xmlInitParser. </para>
</xrefdescription></xrefsect></para>
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        <definition>void xmlLockLibrary</definition>
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        <name>xmlLockLibrary</name>
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<para>xmlLockLibrary is used to take out a re-entrant lock on the libxml2 library. </para>
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        <definition>void xmlUnlockLibrary</definition>
        <argsstring>(void)</argsstring>
        <name>xmlUnlockLibrary</name>
        <param>
          <type>void</type>
        </param>
        <briefdescription>
<para>xmlUnlockLibrary is used to release a re-entrant lock on the libxml2 library. </para>
        </briefdescription>
        <detaileddescription>
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        <inbodydescription>
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        <type>void</type>
        <definition>void xmlCleanupThreads</definition>
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        <name>xmlCleanupThreads</name>
        <param>
          <type>void</type>
        </param>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
<para><xrefsect id="deprecated_1_deprecated000299"><xreftitle>Deprecated</xreftitle><xrefdescription><para>This function is a no-op. Call xmlCleanupParser to free global state but see the warnings there. xmlCleanupParser should be only called once at program exit. In most cases, you don&apos;t have call cleanup functions at all. </para>
</xrefdescription></xrefsect></para>
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<para>interfaces for thread handling </para>
    </briefdescription>
    <detaileddescription>
<para>set of generic threading related routines should work with pthreads, Windows native or TLS threads</para>
<para><simplesect kind="copyright"><para>See Copyright for the status of this software.</para>
</simplesect>
<simplesect kind="author"><para>Daniel Veillard </para>
</simplesect>
</para>
    </detaileddescription>
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