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282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.3</a> > <a href="./">Modules</a></div>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<div id="preamble"><h1>Apache Module mod_slotmem_plain</h1>
f086b4b402fa9a2fefc7dda85de2a3cc1cd0a654rjung<p><span>Available Languages: </span><a href="/en/mod/mod_slotmem_plain.html" title="English"> en </a></p>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Slot-based shared memory provider.</td></tr>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<tr><th><a href="module-dict.html#ModuleIdentifier">Module�Identifier:</a></th><td>mod_slotmem_plain</td></tr>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<tr><th><a href="module-dict.html#SourceFile">Source�File:</a></th><td>mod_slotmem_plain.c</td></tr></table>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <p><code>mod_slotmem_plain</code> is a memory provider which
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd provides for creation and access to a plain memory segment
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd in which the datasets are organized in "slots."
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <p>If the memory needs to be shared between threads and
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd processes, a better provider would be
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <code class="module"><a href="/mod/mod_slotmem_shm.html">mod_slotmem_shm</a></code>.
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <p><code>mod_slotmem_plain</code> provides the following API functions:
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t doall(ap_slotmem_instance_t *s, ap_slotmem_callback_fn_t *func, void *data, apr_pool_t *pool)</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t create(ap_slotmem_instance_t **new, const char *name, apr_size_t item_size, unsigned int item_num, ap_slotmem_type_t type, apr_pool_t *pool)</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dd>create a new slotmem with each item size is item_size.</dd>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t attach(ap_slotmem_instance_t **new, const char *name, apr_size_t *item_size, unsigned int *item_num, apr_pool_t *pool)</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t dptr(ap_slotmem_instance_t *s, unsigned int item_id, void**mem)</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dd>get the direct pointer to the memory associated with this worker slot.</dd>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t get(ap_slotmem_instance_t *s, unsigned int item_id, unsigned char *dest, apr_size_t dest_len)</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t put(ap_slotmem_instance_t *slot, unsigned int item_id, unsigned char *src, apr_size_t src_len)</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>unsigned int num_slots(ap_slotmem_instance_t *s)</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dd>return the total data size, in bytes, of a slot in the segment</dd>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t grab(ap_slotmem_instance_t *s, unsigned int item_id);</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dd>grab or allocate a slot and mark as in-use (does not do any data copying)</dd>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dt>apr_status_t release(ap_slotmem_instance_t *s, unsigned int item_id);</dt>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd <dd>release or free a slot and mark as not in-use (does not do any data copying)</dd>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<div id="quickview"><h3 class="directives">Directives</h3>
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd<p>This module provides no
282b62d8e9a4edbc2da22ba2d876ec94afc48084nd directives.</p>
f086b4b402fa9a2fefc7dda85de2a3cc1cd0a654rjung<p><span>Available Languages: </span><a href="/en/mod/mod_slotmem_plain.html" title="English"> en </a></p>
9c1260efa52c82c2a58e5b5f20cd6902563d95f5rbowen<p class="apache">Copyright 2011 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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