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  35         <th width="100%" align="center">libxml2 Reference Manual</th>
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  38     <h2>
  39       <span class="refentrytitle">xmlmemory</span>
  40     </h2>
  41     <p>xmlmemory - interface for the memory allocator</p>
  42     <p>provides interfaces for the memory allocator, including debugging capabilities. </p>
  43     <p>Author(s): Daniel Veillard </p>
  44     <div class="refsynopsisdiv">
  45       <h2>Synopsis</h2>
  46       <pre class="synopsis">#define <a href="#xmlRealloc">xmlRealloc</a>;
  47 #define <a href="#xmlMalloc">xmlMalloc</a>;
  48 #define <a href="#xmlMallocAtomic">xmlMallocAtomic</a>;
  49 #define <a href="#DEBUG_MEMORY">DEBUG_MEMORY</a>;
  50 #define <a href="#xmlMemStrdup">xmlMemStrdup</a>;
  51 void *  <a href="#xmlMemRealloc">xmlMemRealloc</a>                      (void * ptr, <br/>                                       size_t size);
  52 int     <a href="#xmlInitMemory">xmlInitMemory</a>                      (void);
  53 void    <a href="#xmlMemFree">xmlMemFree</a>                    (void * ptr);
  54 void *  <a href="#xmlMemMalloc">xmlMemMalloc</a>                        (size_t size);
  55 void    <a href="#xmlMemDisplayLast">xmlMemDisplayLast</a>              (FILE * fp, <br/>                                        long nbBytes);
  56 int     <a href="#xmlMemGet">xmlMemGet</a>                      (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> * freeFunc, <br/>                                  <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> * mallocFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> * reallocFunc, <br/>                                         <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> * strdupFunc);
  57 void    <a href="#xmlMemoryDump">xmlMemoryDump</a>                      (void);
  58 void *  <a href="#xmlMallocLoc">xmlMallocLoc</a>                        (size_t size, <br/>                                      const char * file, <br/>                                        int line);
  59 void    <a href="#xmlMemDisplay">xmlMemDisplay</a>                      (FILE * fp);
  60 int     <a href="#xmlMemBlocks">xmlMemBlocks</a>                        (void);
  61 int     <a href="#xmlGcMemGet">xmlGcMemGet</a>                  (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> * freeFunc, <br/>                                  <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> * mallocFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> * mallocAtomicFunc, <br/>                                      <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> * reallocFunc, <br/>                                         <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> * strdupFunc);
  62 typedef char * <a href="#xmlStrdupFunc">xmlStrdupFunc</a>                       (const char * str);
  63 typedef void <a href="#xmlFreeFunc">xmlFreeFunc</a>                     (void * mem);
  64 void    <a href="#xmlMemShow">xmlMemShow</a>                    (FILE * fp, <br/>                                        int nr);
  65 void *  <a href="#xmlMallocAtomicLoc">xmlMallocAtomicLoc</a>            (size_t size, <br/>                                      const char * file, <br/>                                        int line);
  66 void *  <a href="#xmlReallocLoc">xmlReallocLoc</a>                      (void * ptr, <br/>                                       size_t size, <br/>                                      const char * file, <br/>                                        int line);
  67 void    <a href="#xmlCleanupMemory">xmlCleanupMemory</a>                (void);
  68 int     <a href="#xmlMemUsed">xmlMemUsed</a>                    (void);
  69 int     <a href="#xmlMemSetup">xmlMemSetup</a>                  (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> freeFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> mallocFunc, <br/>                                      <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> reallocFunc, <br/>                                   <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> strdupFunc);
  70 typedef void * <a href="#xmlReallocFunc">xmlReallocFunc</a>                     (void * mem, <br/>                                       size_t size);
  71 typedef void * <a href="#xmlMallocFunc">xmlMallocFunc</a>                       (size_t size);
  72 int     <a href="#xmlGcMemSetup">xmlGcMemSetup</a>                      (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> freeFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> mallocFunc, <br/>                                      <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> mallocAtomicFunc, <br/>                                        <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> reallocFunc, <br/>                                   <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> strdupFunc);
  73 char *  <a href="#xmlMemoryStrdup">xmlMemoryStrdup</a>                  (const char * str);
  74 char *  <a href="#xmlMemStrdupLoc">xmlMemStrdupLoc</a>                  (const char * str, <br/>                                         const char * file, <br/>                                        int line);
  75 </pre>
  76     </div>
  77     <div class="refsect1" lang="en">
  78       <h2>Description</h2>
  79     </div>
  80     <div class="refsect1" lang="en">
  81       <h2>Details</h2>
  82       <div class="refsect2" lang="en">
  83         <div class="refsect2" lang="en"><h3><a name="DEBUG_MEMORY">Macro </a>DEBUG_MEMORY</h3><pre class="programlisting">#define <a href="#DEBUG_MEMORY">DEBUG_MEMORY</a>;
  84 </pre><p><a href="libxml2-xmlmemory.html#DEBUG_MEMORY">DEBUG_MEMORY</a> replaces the allocator with a collect and debug shell to the libc allocator. <a href="libxml2-xmlmemory.html#DEBUG_MEMORY">DEBUG_MEMORY</a> should only be activated when debugging libxml i.e. if libxml has been configured with --with-debug-mem too. #define DEBUG_MEMORY_FREED #define <a href="libxml2-xmlversion.html#DEBUG_MEMORY_LOCATION">DEBUG_MEMORY_LOCATION</a></p>
  85 </div>
  86         <hr/>
  87         <div class="refsect2" lang="en"><h3><a name="xmlFreeFunc"/>Function type xmlFreeFunc</h3><pre class="programlisting">void       xmlFreeFunc                     (void * mem)<br/>
  88 </pre><p>Signature for a free() implementation.</p>
  89 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>mem</tt></i>:</span></td><td>an already allocated block of memory</td></tr></tbody></table></div></div>
  90         <hr/>
  91         <div class="refsect2" lang="en"><h3><a name="xmlMallocFunc"/>Function type xmlMallocFunc</h3><pre class="programlisting">void * xmlMallocFunc                   (size_t size)<br/>
  92 </pre><p>Signature for a malloc() implementation.</p>
  93 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>the size requested in bytes</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the newly allocated block or NULL in case of error.</td></tr></tbody></table></div></div>
  94         <hr/>
  95         <div class="refsect2" lang="en"><h3><a name="xmlReallocFunc"/>Function type xmlReallocFunc</h3><pre class="programlisting">void *       xmlReallocFunc                  (void * mem, <br/>                                       size_t size)<br/>
  96 </pre><p>Signature for a realloc() implementation.</p>
  97 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>mem</tt></i>:</span></td><td>an already allocated block of memory</td></tr><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>the new size requested in bytes</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the newly reallocated block or NULL in case of error.</td></tr></tbody></table></div></div>
  98         <hr/>
  99         <div class="refsect2" lang="en"><h3><a name="xmlStrdupFunc"/>Function type xmlStrdupFunc</h3><pre class="programlisting">char * xmlStrdupFunc                   (const char * str)<br/>
 100 </pre><p>Signature for an strdup() implementation.</p>
 101 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>a zero terminated string</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the copy of the string or NULL in case of error.</td></tr></tbody></table></div></div>
 102         <hr/>
 103         <div class="refsect2" lang="en"><h3><a name="xmlCleanupMemory"/>xmlCleanupMemory ()</h3><pre class="programlisting">void        xmlCleanupMemory                (void)<br/>
 104 </pre><p>Free up all the memory allocated by the library for its own use. This should not be called by user level code.</p>
 105 </div>
 106         <hr/>
 107         <div class="refsect2" lang="en"><h3><a name="xmlGcMemGet"/>xmlGcMemGet ()</h3><pre class="programlisting">int   xmlGcMemGet                     (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> * freeFunc, <br/>                                  <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> * mallocFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> * mallocAtomicFunc, <br/>                                      <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> * reallocFunc, <br/>                                         <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> * strdupFunc)<br/>
 108 </pre><p>Provides the memory access functions set currently in use The mallocAtomicFunc is specialized for atomic block allocations (i.e. of areas useful for garbage collected memory allocators</p>
 109 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>freeFunc</tt></i>:</span></td><td>place to save the free() function in use</td></tr><tr><td><span class="term"><i><tt>mallocFunc</tt></i>:</span></td><td>place to save the malloc() function in use</td></tr><tr><td><span class="term"><i><tt>mallocAtomicFunc</tt></i>:</span></td><td>place to save the atomic malloc() function in use</td></tr><tr><td><span class="term"><i><tt>reallocFunc</tt></i>:</span></td><td>place to save the realloc() function in use</td></tr><tr><td><span class="term"><i><tt>strdupFunc</tt></i>:</span></td><td>place to save the strdup() function in use</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 on success</td></tr></tbody></table></div></div>
 110         <hr/>
 111         <div class="refsect2" lang="en"><h3><a name="xmlGcMemSetup"/>xmlGcMemSetup ()</h3><pre class="programlisting">int       xmlGcMemSetup                   (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> freeFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> mallocFunc, <br/>                                      <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> mallocAtomicFunc, <br/>                                        <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> reallocFunc, <br/>                                   <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> strdupFunc)<br/>
 112 </pre><p>Override the default memory access functions with a new set This has to be called before any other libxml routines ! The mallocAtomicFunc is specialized for atomic block allocations (i.e. of areas useful for garbage collected memory allocators Should this be blocked if there was already some allocations done ?</p>
 113 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>freeFunc</tt></i>:</span></td><td>the free() function to use</td></tr><tr><td><span class="term"><i><tt>mallocFunc</tt></i>:</span></td><td>the malloc() function to use</td></tr><tr><td><span class="term"><i><tt>mallocAtomicFunc</tt></i>:</span></td><td>the malloc() function to use for atomic allocations</td></tr><tr><td><span class="term"><i><tt>reallocFunc</tt></i>:</span></td><td>the realloc() function to use</td></tr><tr><td><span class="term"><i><tt>strdupFunc</tt></i>:</span></td><td>the strdup() function to use</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 on success</td></tr></tbody></table></div></div>
 114         <hr/>
 115         <div class="refsect2" lang="en"><h3><a name="xmlInitMemory"/>xmlInitMemory ()</h3><pre class="programlisting">int       xmlInitMemory                   (void)<br/>
 116 </pre><p>Initialize the memory layer.</p>
 117 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 on success</td></tr></tbody></table></div></div>
 118         <hr/>
 119         <div class="refsect2" lang="en"><h3><a name="xmlMallocAtomicLoc"/>xmlMallocAtomicLoc ()</h3><pre class="programlisting">void *  xmlMallocAtomicLoc              (size_t size, <br/>                                      const char * file, <br/>                                        int line)<br/>
 120 </pre><p>a malloc() equivalent, with logging of the allocation info.</p>
 121 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>an unsigned int specifying the size in byte to allocate.</td></tr><tr><td><span class="term"><i><tt>file</tt></i>:</span></td><td>the file name or NULL</td></tr><tr><td><span class="term"><i><tt>line</tt></i>:</span></td><td>the line number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the allocated area or NULL in case of lack of memory.</td></tr></tbody></table></div></div>
 122         <hr/>
 123         <div class="refsect2" lang="en"><h3><a name="xmlMallocLoc"/>xmlMallocLoc ()</h3><pre class="programlisting">void *      xmlMallocLoc                    (size_t size, <br/>                                      const char * file, <br/>                                        int line)<br/>
 124 </pre><p>a malloc() equivalent, with logging of the allocation info.</p>
 125 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>an int specifying the size in byte to allocate.</td></tr><tr><td><span class="term"><i><tt>file</tt></i>:</span></td><td>the file name or NULL</td></tr><tr><td><span class="term"><i><tt>line</tt></i>:</span></td><td>the line number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the allocated area or NULL in case of lack of memory.</td></tr></tbody></table></div></div>
 126         <hr/>
 127         <div class="refsect2" lang="en"><h3><a name="xmlMemBlocks"/>xmlMemBlocks ()</h3><pre class="programlisting">int xmlMemBlocks                    (void)<br/>
 128 </pre><p>Provides the number of memory areas currently allocated</p>
 129 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>an int representing the number of blocks</td></tr></tbody></table></div></div>
 130         <hr/>
 131         <div class="refsect2" lang="en"><h3><a name="xmlMemDisplay"/>xmlMemDisplay ()</h3><pre class="programlisting">void      xmlMemDisplay                   (FILE * fp)<br/>
 132 </pre><p>show in-extenso the memory blocks allocated</p>
 133 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>fp</tt></i>:</span></td><td>a FILE descriptor used as the output file, if NULL, the result is written to the file .memorylist</td></tr></tbody></table></div></div>
 134         <hr/>
 135         <div class="refsect2" lang="en"><h3><a name="xmlMemDisplayLast"/>xmlMemDisplayLast ()</h3><pre class="programlisting">void      xmlMemDisplayLast               (FILE * fp, <br/>                                        long nbBytes)<br/>
 136 </pre><p>the last nbBytes of memory allocated and not freed, useful for dumping the memory left allocated between two places at runtime.</p>
 137 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>fp</tt></i>:</span></td><td>a FILE descriptor used as the output file, if NULL, the result is written to the file .memorylist</td></tr><tr><td><span class="term"><i><tt>nbBytes</tt></i>:</span></td><td>the amount of memory to dump</td></tr></tbody></table></div></div>
 138         <hr/>
 139         <div class="refsect2" lang="en"><h3><a name="xmlMemFree"/>xmlMemFree ()</h3><pre class="programlisting">void    xmlMemFree                      (void * ptr)<br/>
 140 </pre><p>a free() equivalent, with error checking.</p>
 141 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ptr</tt></i>:</span></td><td>the memory block pointer</td></tr></tbody></table></div></div>
 142         <hr/>
 143         <div class="refsect2" lang="en"><h3><a name="xmlMemGet"/>xmlMemGet ()</h3><pre class="programlisting">int       xmlMemGet                       (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> * freeFunc, <br/>                                  <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> * mallocFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> * reallocFunc, <br/>                                         <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> * strdupFunc)<br/>
 144 </pre><p>Provides the memory access functions set currently in use</p>
 145 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>freeFunc</tt></i>:</span></td><td>place to save the free() function in use</td></tr><tr><td><span class="term"><i><tt>mallocFunc</tt></i>:</span></td><td>place to save the malloc() function in use</td></tr><tr><td><span class="term"><i><tt>reallocFunc</tt></i>:</span></td><td>place to save the realloc() function in use</td></tr><tr><td><span class="term"><i><tt>strdupFunc</tt></i>:</span></td><td>place to save the strdup() function in use</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 on success</td></tr></tbody></table></div></div>
 146         <hr/>
 147         <div class="refsect2" lang="en"><h3><a name="xmlMemMalloc"/>xmlMemMalloc ()</h3><pre class="programlisting">void *      xmlMemMalloc                    (size_t size)<br/>
 148 </pre><p>a malloc() equivalent, with logging of the allocation info.</p>
 149 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>an int specifying the size in byte to allocate.</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the allocated area or NULL in case of lack of memory.</td></tr></tbody></table></div></div>
 150         <hr/>
 151         <div class="refsect2" lang="en"><h3><a name="xmlMemRealloc"/>xmlMemRealloc ()</h3><pre class="programlisting">void *    xmlMemRealloc                   (void * ptr, <br/>                                       size_t size)<br/>
 152 </pre><p>a realloc() equivalent, with logging of the allocation info.</p>
 153 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ptr</tt></i>:</span></td><td>the initial memory block pointer</td></tr><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>an int specifying the size in byte to allocate.</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the allocated area or NULL in case of lack of memory.</td></tr></tbody></table></div></div>
 154         <hr/>
 155         <div class="refsect2" lang="en"><h3><a name="xmlMemSetup"/>xmlMemSetup ()</h3><pre class="programlisting">int   xmlMemSetup                     (<a href="libxml2-xmlmemory.html#xmlFreeFunc">xmlFreeFunc</a> freeFunc, <br/>                                    <a href="libxml2-xmlmemory.html#xmlMallocFunc">xmlMallocFunc</a> mallocFunc, <br/>                                      <a href="libxml2-xmlmemory.html#xmlReallocFunc">xmlReallocFunc</a> reallocFunc, <br/>                                   <a href="libxml2-xmlmemory.html#xmlStrdupFunc">xmlStrdupFunc</a> strdupFunc)<br/>
 156 </pre><p>Override the default memory access functions with a new set This has to be called before any other libxml routines ! Should this be blocked if there was already some allocations done ?</p>
 157 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>freeFunc</tt></i>:</span></td><td>the free() function to use</td></tr><tr><td><span class="term"><i><tt>mallocFunc</tt></i>:</span></td><td>the malloc() function to use</td></tr><tr><td><span class="term"><i><tt>reallocFunc</tt></i>:</span></td><td>the realloc() function to use</td></tr><tr><td><span class="term"><i><tt>strdupFunc</tt></i>:</span></td><td>the strdup() function to use</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 on success</td></tr></tbody></table></div></div>
 158         <hr/>
 159         <div class="refsect2" lang="en"><h3><a name="xmlMemShow"/>xmlMemShow ()</h3><pre class="programlisting">void    xmlMemShow                      (FILE * fp, <br/>                                        int nr)<br/>
 160 </pre><p>show a show display of the memory allocated, and dump the @nr last allocated areas which were not freed</p>
 161 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>fp</tt></i>:</span></td><td>a FILE descriptor used as the output file</td></tr><tr><td><span class="term"><i><tt>nr</tt></i>:</span></td><td>number of entries to dump</td></tr></tbody></table></div></div>
 162         <hr/>
 163         <div class="refsect2" lang="en"><h3><a name="xmlMemStrdupLoc"/>xmlMemStrdupLoc ()</h3><pre class="programlisting">char *        xmlMemStrdupLoc                 (const char * str, <br/>                                         const char * file, <br/>                                        int line)<br/>
 164 </pre><p>a strdup() equivalent, with logging of the allocation info.</p>
 165 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the initial string pointer</td></tr><tr><td><span class="term"><i><tt>file</tt></i>:</span></td><td>the file name or NULL</td></tr><tr><td><span class="term"><i><tt>line</tt></i>:</span></td><td>the line number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the new string or NULL if allocation error occurred.</td></tr></tbody></table></div></div>
 166         <hr/>
 167         <div class="refsect2" lang="en"><h3><a name="xmlMemUsed"/>xmlMemUsed ()</h3><pre class="programlisting">int     xmlMemUsed                      (void)<br/>
 168 </pre><p>Provides the amount of memory currently allocated</p>
 169 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>an int representing the amount of memory allocated.</td></tr></tbody></table></div></div>
 170         <hr/>
 171         <div class="refsect2" lang="en"><h3><a name="xmlMemoryDump"/>xmlMemoryDump ()</h3><pre class="programlisting">void      xmlMemoryDump                   (void)<br/>
 172 </pre><p>Dump in-extenso the memory blocks allocated to the file .memorylist</p>
 173 </div>
 174         <hr/>
 175         <div class="refsect2" lang="en"><h3><a name="xmlMemoryStrdup"/>xmlMemoryStrdup ()</h3><pre class="programlisting">char *        xmlMemoryStrdup                 (const char * str)<br/>
 176 </pre><p>a strdup() equivalent, with logging of the allocation info.</p>
 177 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the initial string pointer</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the new string or NULL if allocation error occurred.</td></tr></tbody></table></div></div>
 178         <hr/>
 179         <div class="refsect2" lang="en"><h3><a name="xmlReallocLoc"/>xmlReallocLoc ()</h3><pre class="programlisting">void *    xmlReallocLoc                   (void * ptr, <br/>                                       size_t size, <br/>                                      const char * file, <br/>                                        int line)<br/>
 180 </pre><p>a realloc() equivalent, with logging of the allocation info.</p>
 181 <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ptr</tt></i>:</span></td><td>the initial memory block pointer</td></tr><tr><td><span class="term"><i><tt>size</tt></i>:</span></td><td>an int specifying the size in byte to allocate.</td></tr><tr><td><span class="term"><i><tt>file</tt></i>:</span></td><td>the file name or NULL</td></tr><tr><td><span class="term"><i><tt>line</tt></i>:</span></td><td>the line number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a pointer to the allocated area or NULL in case of lack of memory.</td></tr></tbody></table></div></div>
 182         <hr/>
 183       </div>
 184     </div>
 185   </body>
 186 </html>