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197 <div class=
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198 <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>
199 <div class=
"section" id=
"synopsis">
200 <h2>SYNOPSIS
<a class=
"headerlink" href=
"#synopsis" title=
"Permalink to this headline">¶
</a></h2>
201 <p>#include
<libmemcached/memcached.h
></p>
202 <dl class=
"cpp type">
203 <dt id=
"_CPPv419memcached_server_fn">
204 <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>
207 <dl class=
"cpp function">
208 <dt id=
"_CPPv422memcached_server_countP12memcached_st">
209 <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>
212 <dl class=
"cpp function">
213 <dt id=
"_CPPv420memcached_server_addP12memcached_stPKc9in_port_t">
214 <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>
217 <dl class=
"cpp function">
218 <dt id=
"_CPPv424memcached_server_add_udpP12memcached_stPKc9in_port_t">
219 <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>
222 <dl class=
"cpp function">
223 <dt id=
"_CPPv432memcached_server_add_unix_socketP12memcached_stPKc">
224 <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>
227 <dl class=
"cpp function">
228 <dt id=
"_CPPv421memcached_server_pushP12memcached_stPK19memcached_server_st">
229 <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>
232 <dl class=
"cpp function">
233 <dt id=
"_CPPv423memcached_server_by_keyP12memcached_stPKc6size_tP18memcached_return_t">
234 <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>
237 <dl class=
"cpp function">
238 <dt id=
"_CPPv436memcached_server_get_last_disconnectPK12memcached_st">
239 <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>
242 <dl class=
"cpp function">
243 <dt id=
"_CPPv423memcached_server_cursorPK12memcached_stPK19memcached_server_fnPv8uint32_t">
244 <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>
247 <p>compile and link with -lmemcached
</p>
249 <div class=
"section" id=
"description">
250 <h2>DESCRIPTION
<a class=
"headerlink" href=
"#description" title=
"Permalink to this headline">¶
</a></h2>
251 <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
252 these hosts determine routing to keys. Functions are provided to add keys to
253 memcached_st structures. To manipulate lists of servers see
254 memcached_server_st(
3).
</p>
255 <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
256 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>
258 <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
<code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">MEMCACHED_BEHAVIOR_USE_UDP
</span></code> 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>
261 <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
262 servers are allowed, so duplication is not checked. Executing this function with out setting the
<code class=
"xref cpp cpp-any docutils literal notranslate"><span class=
"pre">MEMCACHED_BEHAVIOR_USE_UDP
</span></code> behavior will result in a
263 <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>
264 <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.
265 Duplicate servers are allowed, so duplication is not checked. The length
266 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>
267 <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
268 the end. Duplicate servers are allowed, so duplication is not checked. A
269 copy is made of structure so the list provided (and any operations on
270 the list) are not saved.
</p>
271 <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
272 server which would be used for assignment.
</p>
273 <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
274 server for which there was a connection problem. It does not mean this
275 particular server is currently dead but if the library is reporting a server
276 is, the returned server is a very good candidate.
</p>
277 <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
278 list of hosts currently in the cursor calling the list of callback
279 functions provided. You can optionally pass in a value via
280 context which will be provided to each callback function. An error
281 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>
283 <div class=
"section" id=
"return-value">
284 <h2>RETURN VALUE
<a class=
"headerlink" href=
"#return-value" title=
"Permalink to this headline">¶
</a></h2>
285 <p>Varies, see particular functions.
</p>
287 <div class=
"section" id=
"see-also">
288 <h2>SEE ALSO
<a class=
"headerlink" href=
"#see-also" title=
"Permalink to this headline">¶
</a></h2>
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