<HTML
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><H1
><A
NAME="LIBXML-THREADS"
>threads</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN19856"
></A
><H2
>Name</H2
>threads&nbsp;--&nbsp;</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN19859"
></A
><H2
>Synopsis</H2
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="SYNOPSIS"
>&#13;

struct      <A
HREF="libxml-threads.html#XMLMUTEX"
>xmlMutex</A
>;
typedef     <A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
>;
<A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> <A
HREF="libxml-threads.html#XMLNEWMUTEX"
>xmlNewMutex</A
>                     (void);
void        <A
HREF="libxml-threads.html#XMLMUTEXLOCK"
>xmlMutexLock</A
>                    (<A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> tok);
void        <A
HREF="libxml-threads.html#XMLMUTEXUNLOCK"
>xmlMutexUnlock</A
>                  (<A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> tok);
void        <A
HREF="libxml-threads.html#XMLFREEMUTEX"
>xmlFreeMutex</A
>                    (<A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> tok);
struct      <A
HREF="libxml-threads.html#XMLRMUTEX"
>xmlRMutex</A
>;
typedef     <A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
>;
<A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> <A
HREF="libxml-threads.html#XMLNEWRMUTEX"
>xmlNewRMutex</A
>                   (void);
void        <A
HREF="libxml-threads.html#XMLRMUTEXLOCK"
>xmlRMutexLock</A
>                   (<A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> tok);
void        <A
HREF="libxml-threads.html#XMLRMUTEXUNLOCK"
>xmlRMutexUnlock</A
>                 (<A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> tok);
void        <A
HREF="libxml-threads.html#XMLFREERMUTEX"
>xmlFreeRMutex</A
>                   (<A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> tok);
void        <A
HREF="libxml-threads.html#XMLINITTHREADS"
>xmlInitThreads</A
>                  (void);
void        <A
HREF="libxml-threads.html#XMLLOCKLIBRARY"
>xmlLockLibrary</A
>                  (void);
void        <A
HREF="libxml-threads.html#XMLUNLOCKLIBRARY"
>xmlUnlockLibrary</A
>                (void);
int         <A
HREF="libxml-threads.html#XMLGETTHREADID"
>xmlGetThreadId</A
>                  (void);
int         <A
HREF="libxml-threads.html#XMLISMAINTHREAD"
>xmlIsMainThread</A
>                 (void);
void        <A
HREF="libxml-threads.html#XMLCLEANUPTHREADS"
>xmlCleanupThreads</A
>               (void);
<A
HREF="libxml-globals.html#XMLGLOBALSTATEPTR"
>xmlGlobalStatePtr</A
> <A
HREF="libxml-threads.html#XMLGETGLOBALSTATE"
>xmlGetGlobalState</A
>         (void);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN19890"
></A
><H2
>Description</H2
><P
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN19893"
></A
><H2
>Details</H2
><DIV
CLASS="REFSECT2"
><A
NAME="AEN19895"
></A
><H3
><A
NAME="XMLMUTEX"
></A
>struct xmlMutex</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlMutex;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19900"
></A
><H3
><A
NAME="XMLMUTEXPTR"
></A
>xmlMutexPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlMutex *xmlMutexPtr;</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLNEWMUTEX"
>xmlNewMutex</A
>() is used to allocate a libxml2 token struct for use in
synchronizing access to data.</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19907"
></A
><H3
><A
NAME="XMLNEWMUTEX"
></A
>xmlNewMutex ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> xmlNewMutex                     (void);</PRE
></TD
></TR
></TABLE
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN19913"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>&nbsp;</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19922"
></A
><H3
><A
NAME="XMLMUTEXLOCK"
></A
>xmlMutexLock ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlMutexLock                    (<A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> tok);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLMUTEXLOCK"
>xmlMutexLock</A
>() is used to lock a libxml2 token.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN19930"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>tok</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the simple mutex</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19939"
></A
><H3
><A
NAME="XMLMUTEXUNLOCK"
></A
>xmlMutexUnlock ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlMutexUnlock                  (<A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> tok);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLMUTEXUNLOCK"
>xmlMutexUnlock</A
>() is used to unlock a libxml2 token.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN19947"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>tok</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the simple mutex</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19956"
></A
><H3
><A
NAME="XMLFREEMUTEX"
></A
>xmlFreeMutex ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlFreeMutex                    (<A
HREF="libxml-threads.html#XMLMUTEXPTR"
>xmlMutexPtr</A
> tok);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLFREEMUTEX"
>xmlFreeMutex</A
>() is used to reclaim resources associated with a libxml2 token
struct.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN19964"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>tok</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the simple mutex</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19973"
></A
><H3
><A
NAME="XMLRMUTEX"
></A
>struct xmlRMutex</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlRMutex;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19978"
></A
><H3
><A
NAME="XMLRMUTEXPTR"
></A
>xmlRMutexPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlRMutex *xmlRMutexPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19983"
></A
><H3
><A
NAME="XMLNEWRMUTEX"
></A
>xmlNewRMutex ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> xmlNewRMutex                   (void);</PRE
></TD
></TR
></TABLE
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN19989"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>&nbsp;</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN19998"
></A
><H3
><A
NAME="XMLRMUTEXLOCK"
></A
>xmlRMutexLock ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlRMutexLock                   (<A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> tok);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLRMUTEXLOCK"
>xmlRMutexLock</A
>() is used to lock a libxml2 token_r.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN20006"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>tok</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the reentrant mutex</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20015"
></A
><H3
><A
NAME="XMLRMUTEXUNLOCK"
></A
>xmlRMutexUnlock ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlRMutexUnlock                 (<A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> tok);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLRMUTEXUNLOCK"
>xmlRMutexUnlock</A
>() is used to unlock a libxml2 token_r.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN20023"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>tok</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the reentrant mutex</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20032"
></A
><H3
><A
NAME="XMLFREERMUTEX"
></A
>xmlFreeRMutex ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlFreeRMutex                   (<A
HREF="libxml-threads.html#XMLRMUTEXPTR"
>xmlRMutexPtr</A
> tok);</PRE
></TD
></TR
></TABLE
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN20038"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>tok</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>&nbsp;</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20047"
></A
><H3
><A
NAME="XMLINITTHREADS"
></A
>xmlInitThreads ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlInitThreads                  (void);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLINITTHREADS"
>xmlInitThreads</A
>() is used to to initialize all the thread related
data of the libxml2 library.</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20054"
></A
><H3
><A
NAME="XMLLOCKLIBRARY"
></A
>xmlLockLibrary ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlLockLibrary                  (void);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLLOCKLIBRARY"
>xmlLockLibrary</A
>() is used to take out a re-entrant lock on the libxml2
library.</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20061"
></A
><H3
><A
NAME="XMLUNLOCKLIBRARY"
></A
>xmlUnlockLibrary ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlUnlockLibrary                (void);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLUNLOCKLIBRARY"
>xmlUnlockLibrary</A
>() is used to release a re-entrant lock on the libxml2
library.</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20068"
></A
><H3
><A
NAME="XMLGETTHREADID"
></A
>xmlGetThreadId ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlGetThreadId                  (void);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLGETTHREADID"
>xmlGetThreadId</A
>() find the current thread ID number</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN20075"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the current thread ID number</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20084"
></A
><H3
><A
NAME="XMLISMAINTHREAD"
></A
>xmlIsMainThread ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlIsMainThread                 (void);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLISMAINTHREAD"
>xmlIsMainThread</A
>() check wether the current thread is the main thread.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN20091"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>1 if the current thread is the main thread, 0 otherwise</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20100"
></A
><H3
><A
NAME="XMLCLEANUPTHREADS"
></A
>xmlCleanupThreads ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlCleanupThreads               (void);</PRE
></TD
></TR
></TABLE
><P
><A
HREF="libxml-threads.html#XMLCLEANUPTHREADS"
>xmlCleanupThreads</A
>() is used to to cleanup all the thread related
data of the libxml2 library once processing has ended.</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN20107"
></A
><H3
><A
NAME="XMLGETGLOBALSTATE"
></A
>xmlGetGlobalState ()</H3
><TABLE
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>xmlGlobalStatePtr</A
> xmlGetGlobalState         (void);</PRE
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>xmlGetGlobalState</A
>() is called to retrieve the global state for a thread.
keyonce will only be set once during a library invocation and is used
to create globalkey, the key used to store each thread's TSD.</P
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>Note: it should not be called for the "main" thread as this thread uses
the existing global variables defined in the library.</P
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>Returns</I
> :</TD
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>the thread global state or NULL in case of error</TD
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