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 129 <li class="toctree-l2"><a class="reference internal" href="../bin/memcapable.html">memcapable - Checking a Memcached server capabilities and compatibility</a></li>
 130 <li class="toctree-l2"><a class="reference internal" href="../bin/memcat.html">memcat - “cat” data from a server</a></li>
 131 <li class="toctree-l2"><a class="reference internal" href="../bin/memcp.html">memcp - Copy data to a server</a></li>
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 136 <li class="toctree-l2"><a class="reference internal" href="../bin/memslap.html">memslap - Load testing  and benchmarking a server</a></li>
 137 <li class="toctree-l2"><a class="reference internal" href="../bin/memaslap.html">memaslap - Load testing  and benchmarking a server</a></li>
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 139 <li class="toctree-l2"><a class="reference internal" href="../bin/memexist.html">memexist - Check for the existence of a key</a></li>
 140 <li class="toctree-l2"><a class="reference internal" href="../bin/memparse.html">memparse - Parse an option string</a></li>
 141 <li class="toctree-l2"><a class="reference internal" href="../bin/memping.html">memping - Test to see if a server is available.</a></li>
 142 <li class="toctree-l2"><a class="reference internal" href="../bin/memtouch.html">memtouch - Touches a key.</a></li>
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 213   <div class="section" id="manipulate-the-server-information-stored-in-memcached-st">
 214 <h1>Manipulate the server information stored in memcached_st<a class="headerlink" href="#manipulate-the-server-information-stored-in-memcached-st" title="Permalink to this headline">¶</a></h1>
 215 <div class="section" id="synopsis">
 216 <h2>SYNOPSIS<a class="headerlink" href="#synopsis" title="Permalink to this headline">¶</a></h2>
 217 <p>#include &lt;libmemcached/memcached.h&gt;</p>
 218 <dl class="type">
 219 <dt id="_CPPv419memcached_server_fn">
 220 <span id="_CPPv319memcached_server_fn"></span><span id="_CPPv219memcached_server_fn"></span><span id="memcached_server_fn"></span><em class="property">type </em><code class="sig-name descname">memcached_server_fn</code><a class="headerlink" href="#_CPPv419memcached_server_fn" title="Permalink to this definition">¶</a><br /></dt>
 221 <dd></dd></dl>
 222
 223 <dl class="function">
 224 <dt id="_CPPv422memcached_server_countP12memcached_st">
 225 <span id="_CPPv322memcached_server_countP12memcached_st"></span><span id="_CPPv222memcached_server_countP12memcached_st"></span><span id="memcached_server_count__memcached_stP"></span>uint32_t <code class="sig-name descname">memcached_server_count</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv422memcached_server_countP12memcached_st" title="Permalink to this definition">¶</a><br /></dt>
 226 <dd></dd></dl>
 227
 228 <dl class="function">
 229 <dt id="_CPPv420memcached_server_addP12memcached_stPKc9in_port_t">
 230 <span id="_CPPv320memcached_server_addP12memcached_stPKc9in_port_t"></span><span id="_CPPv220memcached_server_addP12memcached_stPKc9in_port_t"></span><span id="memcached_server_add__memcached_stP.cCP.in_port_t"></span><a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_server_add</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em>, <em class="property">const</em> char *<em>hostname</em>, in_port_t <em>port</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv420memcached_server_addP12memcached_stPKc9in_port_t" title="Permalink to this definition">¶</a><br /></dt>
 231 <dd></dd></dl>
 232
 233 <dl class="function">
 234 <dt id="_CPPv424memcached_server_add_udpP12memcached_stPKc9in_port_t">
 235 <span id="_CPPv324memcached_server_add_udpP12memcached_stPKc9in_port_t"></span><span id="_CPPv224memcached_server_add_udpP12memcached_stPKc9in_port_t"></span><span id="memcached_server_add_udp__memcached_stP.cCP.in_port_t"></span><a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_server_add_udp</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em>, <em class="property">const</em> char *<em>hostname</em>, in_port_t <em>port</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv424memcached_server_add_udpP12memcached_stPKc9in_port_t" title="Permalink to this definition">¶</a><br /></dt>
 236 <dd></dd></dl>
 237
 238 <dl class="function">
 239 <dt id="_CPPv432memcached_server_add_unix_socketP12memcached_stPKc">
 240 <span id="_CPPv332memcached_server_add_unix_socketP12memcached_stPKc"></span><span id="_CPPv232memcached_server_add_unix_socketP12memcached_stPKc"></span><span id="memcached_server_add_unix_socket__memcached_stP.cCP"></span><a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_server_add_unix_socket</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em>, <em class="property">const</em> char *<em>socket</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv432memcached_server_add_unix_socketP12memcached_stPKc" title="Permalink to this definition">¶</a><br /></dt>
 241 <dd></dd></dl>
 242
 243 <dl class="function">
 244 <dt id="_CPPv421memcached_server_pushP12memcached_stPK19memcached_server_st">
 245 <span id="_CPPv321memcached_server_pushP12memcached_stPK19memcached_server_st"></span><span id="_CPPv221memcached_server_pushP12memcached_stPK19memcached_server_st"></span><span id="memcached_server_push__memcached_stP.memcached_server_stCP"></span><a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_server_push</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em>, <em class="property">const</em> memcached_server_st *<em>list</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv421memcached_server_pushP12memcached_stPK19memcached_server_st" title="Permalink to this definition">¶</a><br /></dt>
 246 <dd></dd></dl>
 247
 248 <dl class="function">
 249 <dt id="_CPPv423memcached_server_by_keyP12memcached_stPKc6size_tP18memcached_return_t">
 250 <span id="_CPPv323memcached_server_by_keyP12memcached_stPKc6size_tP18memcached_return_t"></span><span id="_CPPv223memcached_server_by_keyP12memcached_stPKc6size_tP18memcached_return_t"></span><span id="memcached_server_by_key__memcached_stP.cCP.s.memcached_return_tP"></span><em class="property">const</em> memcached_instance_st *<code class="sig-name descname">memcached_server_by_key</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em>, <em class="property">const</em> char *<em>key</em>, size_t <em>key_length</em>, <a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t">memcached_return_t</a> *<em>error</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv423memcached_server_by_keyP12memcached_stPKc6size_tP18memcached_return_t" title="Permalink to this definition">¶</a><br /></dt>
 251 <dd></dd></dl>
 252
 253 <dl class="function">
 254 <dt id="_CPPv436memcached_server_get_last_disconnectPK12memcached_st">
 255 <span id="_CPPv336memcached_server_get_last_disconnectPK12memcached_st"></span><span id="_CPPv236memcached_server_get_last_disconnectPK12memcached_st"></span><span id="memcached_server_get_last_disconnect__memcached_stCP"></span><em class="property">const</em> memcached_instance_st *<code class="sig-name descname">memcached_server_get_last_disconnect</code><span class="sig-paren">(</span><em class="property">const</em> <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv436memcached_server_get_last_disconnectPK12memcached_st" title="Permalink to this definition">¶</a><br /></dt>
 256 <dd></dd></dl>
 257
 258 <dl class="function">
 259 <dt id="_CPPv423memcached_server_cursorPK12memcached_stPK19memcached_server_fnPv8uint32_t">
 260 <span id="_CPPv323memcached_server_cursorPK12memcached_stPK19memcached_server_fnPv8uint32_t"></span><span id="_CPPv223memcached_server_cursorPK12memcached_stPK19memcached_server_fnPv8uint32_t"></span><span id="memcached_server_cursor__memcached_stCP.memcached_server_fnCP.voidP.uint32_t"></span><a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_server_cursor</code><span class="sig-paren">(</span><em class="property">const</em> <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st">memcached_st</a> *<em>ptr</em>, <em class="property">const</em> <a class="reference internal" href="#_CPPv419memcached_server_fn" title="memcached_server_fn">memcached_server_fn</a> *<em>callback</em>, void *<em>context</em>, uint32_t <em>number_of_callbacks</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv423memcached_server_cursorPK12memcached_stPK19memcached_server_fnPv8uint32_t" title="Permalink to this definition">¶</a><br /></dt>
 261 <dd></dd></dl>
 262
 263 <p>compile and link with -lmemcached</p>
 264 </div>
 265 <div class="section" id="description">
 266 <h2>DESCRIPTION<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
 267 <p><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">libmemcached</span></code> performs operations on a list of hosts. The order of
 268 these hosts determine routing to keys. Functions are provided to add keys to
 269 memcached_st structures. To manipulate lists of servers see
 270 memcached_server_st(3).</p>
 271 <p><a class="reference internal" href="#_CPPv422memcached_server_countP12memcached_st" title="memcached_server_count"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_count()</span></code></a> provides you a count of the current number of
 272 servers being used by a <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st"><code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_st</span></code></a> structure.</p>
 273 <dl class="simple">
 274 <dt><a class="reference internal" href="#_CPPv420memcached_server_addP12memcached_stPKc9in_port_t" title="memcached_server_add"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_add()</span></code></a> pushes a single TCP server into the <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st"><code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_st</span></code></a> structure. This server will be placed at the end. Duplicate servers</dt><dd><p>are allowed, so duplication is not checked. Executing this function with the <a class="reference internal" href="memcached_behavior.html#_CPPv4N20memcached_behavior_t26MEMCACHED_BEHAVIOR_USE_UDPE" title="MEMCACHED_BEHAVIOR_USE_UDP"><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">MEMCACHED_BEHAVIOR_USE_UDP</span></code></a> behavior set will result in a <a class="reference internal" href="memcached_return_t.html#_CPPv4N18memcached_return_t31MEMCACHED_INVALID_HOST_PROTOCOLE" title="MEMCACHED_INVALID_HOST_PROTOCOL"><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">MEMCACHED_INVALID_HOST_PROTOCOL</span></code></a>.</p>
 275 </dd>
 276 </dl>
 277 <p><a class="reference internal" href="#_CPPv424memcached_server_add_udpP12memcached_stPKc9in_port_t" title="memcached_server_add_udp"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_add_udp()</span></code></a> pushes a single UDP server into the <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st"><code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_st</span></code></a> structure. This server will be placed at the end. Duplicate
 278 servers are allowed, so duplication is not checked. Executing this function with out setting the <a class="reference internal" href="memcached_behavior.html#_CPPv4N20memcached_behavior_t26MEMCACHED_BEHAVIOR_USE_UDPE" title="MEMCACHED_BEHAVIOR_USE_UDP"><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">MEMCACHED_BEHAVIOR_USE_UDP</span></code></a> behavior will result in a
 279 <a class="reference internal" href="memcached_return_t.html#_CPPv4N18memcached_return_t31MEMCACHED_INVALID_HOST_PROTOCOLE" title="MEMCACHED_INVALID_HOST_PROTOCOL"><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">MEMCACHED_INVALID_HOST_PROTOCOL</span></code></a>.</p>
 280 <p><a class="reference internal" href="#_CPPv432memcached_server_add_unix_socketP12memcached_stPKc" title="memcached_server_add_unix_socket"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_add_unix_socket()</span></code></a> pushes a single UNIX socket into the <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st"><code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_st</span></code></a> structure. This UNIX socket will be placed at the end.
 281 Duplicate servers are allowed, so duplication is not checked. The length
 282 of the filename must be one character less than <code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">MEMCACHED_MAX_HOST_LENGTH</span></code>.</p>
 283 <p><a class="reference internal" href="#_CPPv421memcached_server_pushP12memcached_stPK19memcached_server_st" title="memcached_server_push"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_push()</span></code></a> pushes an array of <code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_server_st</span></code> into the <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st"><code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_st</span></code></a> structure. These servers will be placed at
 284 the end. Duplicate servers are allowed, so duplication is not checked. A
 285 copy is made of structure so the list provided (and any operations on
 286 the list) are not saved.</p>
 287 <p><a class="reference internal" href="#_CPPv423memcached_server_by_keyP12memcached_stPKc6size_tP18memcached_return_t" title="memcached_server_by_key"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_by_key()</span></code></a> allows you to provide a key and retrieve the
 288 server which would be used for assignment.</p>
 289 <p><a class="reference internal" href="#_CPPv436memcached_server_get_last_disconnectPK12memcached_st" title="memcached_server_get_last_disconnect"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_get_last_disconnect()</span></code></a> returns a pointer to the last
 290 server for which there was a connection problem. It does not mean this
 291 particular server is currently dead but if the library is reporting a server
 292 is, the returned server is a very good candidate.</p>
 293 <p><a class="reference internal" href="#_CPPv423memcached_server_cursorPK12memcached_stPK19memcached_server_fnPv8uint32_t" title="memcached_server_cursor"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_cursor()</span></code></a> takes a memcached_st and loops through the
 294 list of hosts currently in the cursor calling the list of callback
 295 functions provided. You can optionally pass in a value via
 296 context which will be provided to each callback function. An error
 297 return from any callback will terminate the loop. <a class="reference internal" href="#_CPPv423memcached_server_cursorPK12memcached_stPK19memcached_server_fnPv8uint32_t" title="memcached_server_cursor"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_cursor()</span></code></a> is passed the original caller <a class="reference internal" href="memcached_create.html#_CPPv412memcached_st" title="memcached_st"><code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_st</span></code></a> in its current state.</p>
 298 </div>
 299 <div class="section" id="return">
 300 <h2>RETURN<a class="headerlink" href="#return" title="Permalink to this headline">¶</a></h2>
 301 <p>Varies, see particular functions.</p>
 302 </div>
 303 <div class="section" id="see-also">
 304 <h2>SEE ALSO<a class="headerlink" href="#see-also" title="Permalink to this headline">¶</a></h2>
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