libxml2-xmlmemory.html

xml开源解析代码.版本为libxml2-2.6.29,可支持GB3212.网络消息发送XML时很有用.

<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>
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        <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/>
</pre><p>Signature for a realloc() implementation.</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlStrdupFunc"/>Function type xmlStrdupFunc</h3><pre class="programlisting">char *	xmlStrdupFunc			(const char * str)<br/>
</pre><p>Signature for an strdup() implementation.</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlCleanupMemory"/>xmlCleanupMemory ()</h3><pre class="programlisting">void	xmlCleanupMemory		(void)<br/>
</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>
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        <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/>
</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>
<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>
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        <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/>
</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>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlInitMemory"/>xmlInitMemory ()</h3><pre class="programlisting">int	xmlInitMemory			(void)<br/>
</pre><p>Initialize the memory layer.</p>
<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>
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        <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/>
</pre><p>a malloc() equivalent, with logging of the allocation info.</p>
<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>
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        <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/>
</pre><p>a malloc() equivalent, with logging of the allocation info.</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemBlocks"/>xmlMemBlocks ()</h3><pre class="programlisting">int	xmlMemBlocks			(void)<br/>
</pre><p>Provides the number of memory areas currently allocated</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemDisplay"/>xmlMemDisplay ()</h3><pre class="programlisting">void	xmlMemDisplay			(FILE * fp)<br/>
</pre><p>show in-extenso the memory blocks allocated</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemFree"/>xmlMemFree ()</h3><pre class="programlisting">void	xmlMemFree			(void * ptr)<br/>
</pre><p>a free() equivalent, with error checking.</p>
<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>
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        <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/>
</pre><p>Provides the memory access functions set currently in use</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemMalloc"/>xmlMemMalloc ()</h3><pre class="programlisting">void *	xmlMemMalloc			(size_t size)<br/>
</pre><p>a malloc() equivalent, with logging of the allocation info.</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemRealloc"/>xmlMemRealloc ()</h3><pre class="programlisting">void *	xmlMemRealloc			(void * ptr, <br/>					 size_t size)<br/>
</pre><p>a realloc() equivalent, with logging of the allocation info.</p>
<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>
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        <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/>
</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>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemShow"/>xmlMemShow ()</h3><pre class="programlisting">void	xmlMemShow			(FILE * fp, <br/>					 int nr)<br/>
</pre><p>show a show display of the memory allocated, and dump the @nr last allocated areas which were not freed</p>
<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>
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        <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/>
</pre><p>a strdup() equivalent, with logging of the allocation info.</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemUsed"/>xmlMemUsed ()</h3><pre class="programlisting">int	xmlMemUsed			(void)<br/>
</pre><p>Provides the amount of memory currently allocated</p>
<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>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemoryDump"/>xmlMemoryDump ()</h3><pre class="programlisting">void	xmlMemoryDump			(void)<br/>
</pre><p>Dump in-extenso the memory blocks allocated to the file .memorylist</p>
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        <div class="refsect2" lang="en"><h3><a name="xmlMemoryStrdup"/>xmlMemoryStrdup ()</h3><pre class="programlisting">char *	xmlMemoryStrdup			(const char * str)<br/>
</pre><p>a strdup() equivalent, with logging of the allocation info.</p>
<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>
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        <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/>
</pre><p>a realloc() equivalent, with logging of the allocation info.</p>
<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>
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