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<a href="#nested-classes">Data Structures</a> |
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<h1>Internal Memory Allocation</h1> </div>
<div class="ingroups"><a class="el" href="group___a_p_r.html">Apache Portability Runtime library</a></div></div>
<div class="contents">
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structapr__memnode__t.html">apr_memnode_t</a></td></tr>
<tr><td colspan="2"><h2><a name="define-members"></a>
Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#gaf382851817012929f4e2458b43f4482c">APR_MEMNODE_T_SIZE</a>   APR_ALIGN_DEFAULT(sizeof(<a class="el" href="structapr__memnode__t.html">apr_memnode_t</a>))</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga54f32b19d8dad59bc6364a7a6b8ebec9">APR_ALLOCATOR_MAX_FREE_UNLIMITED</a>   0</td></tr>
<tr><td colspan="2"><h2><a name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="structapr__memnode__t.html">apr_memnode_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga3b6437036dfcdffbf87ad4677c818211">apr_memnode_t</a></td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#gaf834f409a34b7f8656c045cff02fd953">apr_allocator_create</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> **allocator)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga704529f6b26279ad1c48d5e8372d859c">apr_allocator_destroy</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structapr__memnode__t.html">apr_memnode_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga7452b0837c2148bd63109f89bbc0c3db">apr_allocator_alloc</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator, apr_size_t size)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga124e48339838213fd5e160a4125cb7e8">apr_allocator_free</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator, <a class="el" href="structapr__memnode__t.html">apr_memnode_t</a> *memnode)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#gadf38bbec37c29c24388e95b1c9acad28">apr_allocator_owner_set</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator, <a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *pool)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga3cfe48c8717de6495480ce1479d262f1">apr_allocator_owner_get</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga1d45cb6dbe69ba25dee0ec5f4e031d60">apr_allocator_max_free_set</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator, apr_size_t size)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#gab803d74f56683004f7ec384ced210dd5">apr_allocator_mutex_set</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator, <a class="el" href="group__apr__thread__mutex.html#ga95712060ba3a192036416e1ccef1db75">apr_thread_mutex_t</a> *mutex)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__thread__mutex.html#ga95712060ba3a192036416e1ccef1db75">apr_thread_mutex_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__allocator.html#ga38599aa9f1330846a2d2b25ec5c8d9c9">apr_allocator_mutex_get</a> (<a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> *allocator)</td></tr>
</table>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="ga54f32b19d8dad59bc6364a7a6b8ebec9"></a><!-- doxytag: member="apr_allocator.h::APR_ALLOCATOR_MAX_FREE_UNLIMITED" ref="ga54f32b19d8dad59bc6364a7a6b8ebec9" args="" -->
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<td class="memname">#define APR_ALLOCATOR_MAX_FREE_UNLIMITED   0</td>
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<div class="memdoc">
<p>Symbolic constants </p>
</div>
</div>
<a class="anchor" id="gaf382851817012929f4e2458b43f4482c"></a><!-- doxytag: member="apr_allocator.h::APR_MEMNODE_T_SIZE" ref="gaf382851817012929f4e2458b43f4482c" args="" -->
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<td class="memname">#define APR_MEMNODE_T_SIZE   APR_ALIGN_DEFAULT(sizeof(<a class="el" href="structapr__memnode__t.html">apr_memnode_t</a>))</td>
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<div class="memdoc">
<p>The base size of a memory node - aligned. </p>
</div>
</div>
<hr/><h2>Typedef Documentation</h2>
<a class="anchor" id="ga1ceabfd30fcfc455e47d052d2a24244b"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_t" ref="ga1ceabfd30fcfc455e47d052d2a24244b" args="" -->
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<td class="memname">typedef struct <a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> <a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a></td>
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<div class="memdoc">
<p>the allocator structure </p>
</div>
</div>
<a class="anchor" id="ga3b6437036dfcdffbf87ad4677c818211"></a><!-- doxytag: member="apr_allocator.h::apr_memnode_t" ref="ga3b6437036dfcdffbf87ad4677c818211" args="" -->
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<td class="memname">typedef struct <a class="el" href="structapr__memnode__t.html">apr_memnode_t</a> <a class="el" href="structapr__memnode__t.html">apr_memnode_t</a></td>
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<div class="memdoc">
<p>the structure which holds information about the allocation </p>
</div>
</div>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="ga7452b0837c2148bd63109f89bbc0c3db"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_alloc" ref="ga7452b0837c2148bd63109f89bbc0c3db" args="(apr_allocator_t *allocator, apr_size_t size)" -->
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<td class="memname"><a class="el" href="structapr__memnode__t.html">apr_memnode_t</a>* apr_allocator_alloc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_size_t </td>
<td class="paramname"><em>size</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<div class="memdoc">
<p>Allocate a block of mem from the allocator </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator to allocate from </td></tr>
<tr><td class="paramname">size</td><td>The size of the mem to allocate (excluding the memnode structure) </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gaf834f409a34b7f8656c045cff02fd953"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_create" ref="gaf834f409a34b7f8656c045cff02fd953" args="(apr_allocator_t **allocator)" -->
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<td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_allocator_create </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> ** </td>
<td class="paramname"><em>allocator</em></td><td>)</td>
<td></td>
</tr>
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<div class="memdoc">
<p>Create a new allocator </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator we have just created. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga704529f6b26279ad1c48d5e8372d859c"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_destroy" ref="ga704529f6b26279ad1c48d5e8372d859c" args="(apr_allocator_t *allocator)" -->
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<td class="memname">void apr_allocator_destroy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em></td><td>)</td>
<td></td>
</tr>
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<div class="memdoc">
<p>Destroy an allocator </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator to be destroyed </td></tr>
</table>
</dd>
</dl>
<dl class="remark"><dt><b>Remarks:</b></dt><dd>Any memnodes not given back to the allocator prior to destroying will _not_ be free()d. </dd></dl>
</div>
</div>
<a class="anchor" id="ga124e48339838213fd5e160a4125cb7e8"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_free" ref="ga124e48339838213fd5e160a4125cb7e8" args="(apr_allocator_t *allocator, apr_memnode_t *memnode)" -->
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<td class="memname">void apr_allocator_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structapr__memnode__t.html">apr_memnode_t</a> * </td>
<td class="paramname"><em>memnode</em> </td>
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<td></td>
<td>)</td>
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<p>Free a list of blocks of mem, giving them back to the allocator. The list is typically terminated by a memnode with its next field set to NULL. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator to give the mem back to </td></tr>
<tr><td class="paramname">memnode</td><td>The memory node to return </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga1d45cb6dbe69ba25dee0ec5f4e031d60"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_max_free_set" ref="ga1d45cb6dbe69ba25dee0ec5f4e031d60" args="(apr_allocator_t *allocator, apr_size_t size)" -->
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<td class="memname">void apr_allocator_max_free_set </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_size_t </td>
<td class="paramname"><em>size</em> </td>
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<td></td>
<td>)</td>
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<p>Set the current threshold at which the allocator should start giving blocks back to the system. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator the set the threshold on </td></tr>
<tr><td class="paramname">size</td><td>The threshold. 0 == unlimited. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga38599aa9f1330846a2d2b25ec5c8d9c9"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_mutex_get" ref="ga38599aa9f1330846a2d2b25ec5c8d9c9" args="(apr_allocator_t *allocator)" -->
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<td class="memname"><a class="el" href="group__apr__thread__mutex.html#ga95712060ba3a192036416e1ccef1db75">apr_thread_mutex_t</a>* apr_allocator_mutex_get </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em></td><td>)</td>
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<p>Get the mutex currently set for the allocator </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gab803d74f56683004f7ec384ced210dd5"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_mutex_set" ref="gab803d74f56683004f7ec384ced210dd5" args="(apr_allocator_t *allocator, apr_thread_mutex_t *mutex)" -->
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<td class="memname">void apr_allocator_mutex_set </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="group__apr__thread__mutex.html#ga95712060ba3a192036416e1ccef1db75">apr_thread_mutex_t</a> * </td>
<td class="paramname"><em>mutex</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Set a mutex for the allocator to use </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator to set the mutex for </td></tr>
<tr><td class="paramname">mutex</td><td>The mutex </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga3cfe48c8717de6495480ce1479d262f1"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_owner_get" ref="ga3cfe48c8717de6495480ce1479d262f1" args="(apr_allocator_t *allocator)" -->
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<td class="memname"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a>* apr_allocator_owner_get </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em></td><td>)</td>
<td></td>
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<p>Get the current owner of the allocator </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator to get the owner from </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gadf38bbec37c29c24388e95b1c9acad28"></a><!-- doxytag: member="apr_allocator.h::apr_allocator_owner_set" ref="gadf38bbec37c29c24388e95b1c9acad28" args="(apr_allocator_t *allocator, apr_pool_t *pool)" -->
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<td class="memname">void apr_allocator_owner_set </td>
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<td class="paramtype"><a class="el" href="group__apr__allocator.html#ga1ceabfd30fcfc455e47d052d2a24244b">apr_allocator_t</a> * </td>
<td class="paramname"><em>allocator</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>pool</em> </td>
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<td>)</td>
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<p>Set the owner of the allocator </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">allocator</td><td>The allocator to set the owner for </td></tr>
<tr><td class="paramname">pool</td><td>The pool that is to own the allocator </td></tr>
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<dl class="remark"><dt><b>Remarks:</b></dt><dd>Typically pool is the highest level pool using the allocator </dd></dl>
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