git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/memcached_server_st.html

   1
   2
   3 <!DOCTYPE html>
   4 <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
   5 <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
   6 <head>
   7   <meta charset="utf-8">
   8
   9   <meta name="viewport" content="width=device-width, initial-scale=1.0">
  10
  11   <title>Managing lists of servers &mdash; libmemcached 1.0.99 documentation</title>
  12
  13
  14
  15
  16
  17
  18
  19
  20   <script type="text/javascript" src="../_static/js/modernizr.min.js"></script>
  21
  22
  23       <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
  24         <script type="text/javascript" src="../_static/jquery.js"></script>
  25         <script type="text/javascript" src="../_static/underscore.js"></script>
  26         <script type="text/javascript" src="../_static/doctools.js"></script>
  27         <script type="text/javascript" src="../_static/language_data.js"></script>
  28
  29     <script type="text/javascript" src="../_static/js/theme.js"></script>
  30
  31
  32
  33
  34   <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
  35   <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
  36     <link rel="index" title="Index" href="../genindex.html" />
  37     <link rel="search" title="Search" href="../search.html" />
  38     <link rel="copyright" title="Copyright" href="../copyright.html" />
  39     <link rel="next" title="Managing the servers used by memcached_st" href="memcached_servers.html" />
  40     <link rel="prev" title="Servers and Server Lists" href="index_advanced_servers.html" />
  41 </head>
  42
  43 <body class="wy-body-for-nav">
  44
  45
  46   <div class="wy-grid-for-nav">
  47
  48     <nav data-toggle="wy-nav-shift" class="wy-nav-side">
  49       <div class="wy-side-scroll">
  50         <div class="wy-side-nav-search" >
  51
  52
  53
  54             <a href="../index.html" class="icon icon-home"> libmemcached
  55
  56
  57
  58           </a>
  59
  60
  61
  62
  63               <div class="version">
  64                 1.0
  65               </div>
  66
  67
  68
  69
  70 <div role="search">
  71   <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
  72     <input type="text" name="q" placeholder="Search docs" />
  73     <input type="hidden" name="check_keywords" value="yes" />
  74     <input type="hidden" name="area" value="default" />
  75   </form>
  76 </div>
  77
  78
  79         </div>
  80
  81         <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
  82
  83
  84
  85
  86
  87
  88               <p class="caption"><span class="caption-text">libmemcached</span></p>
  89 <ul class="current">
  90 <li class="toctree-l1"><a class="reference internal" href="../libmemcached.html">Introduction</a></li>
  91 <li class="toctree-l1 current"><a class="reference internal" href="index.html">libmemcached API</a><ul class="current">
  92 <li class="toctree-l2"><a class="reference internal" href="index_basics.html">Basics</a></li>
  93 <li class="toctree-l2"><a class="reference internal" href="index_data.html">Working with Data</a></li>
  94 <li class="toctree-l2"><a class="reference internal" href="index_errors.html">Messages and Errors</a></li>
  95 <li class="toctree-l2 current"><a class="reference internal" href="index_advanced.html">Advanced Topics</a><ul class="current">
  96 <li class="toctree-l3"><a class="reference internal" href="index_advanced_internals.html">Internal Behavior</a></li>
  97 <li class="toctree-l3"><a class="reference internal" href="index_advanced_aeh.html">Authentication, Encryption &amp; Hashing</a></li>
  98 <li class="toctree-l3 current"><a class="reference internal" href="index_advanced_servers.html">Servers and Server Lists</a><ul class="current">
  99 <li class="toctree-l4 current"><a class="current reference internal" href="#">Managing lists of servers</a></li>
 100 <li class="toctree-l4"><a class="reference internal" href="memcached_servers.html">Managing the servers used by memcached_st</a></li>
 101 </ul>
 102 </li>
 103 <li class="toctree-l3"><a class="reference internal" href="index_advanced_daemon.html">Affecting the memcached Daemon</a></li>
 104 <li class="toctree-l3"><a class="reference internal" href="index_advanced_stats.html">Statistics</a></li>
 105 </ul>
 106 </li>
 107 <li class="toctree-l2"><a class="reference internal" href="index_deprecated.html">Deprecated Functionality</a></li>
 108 </ul>
 109 </li>
 110 <li class="toctree-l1"><a class="reference internal" href="index_misc.html">Misc</a></li>
 111 </ul>
 112 <p class="caption"><span class="caption-text">libmemcachedutil</span></p>
 113 <ul>
 114 <li class="toctree-l1"><a class="reference internal" href="../libmemcachedutil.html">Introduction</a></li>
 115 <li class="toctree-l1"><a class="reference internal" href="../libmemcachedutil/index.html">libmemcachedutil API</a></li>
 116 </ul>
 117 <p class="caption"><span class="caption-text">libhashkit</span></p>
 118 <ul>
 119 <li class="toctree-l1"><a class="reference internal" href="../libhashkit.html">Introduction</a></li>
 120 <li class="toctree-l1"><a class="reference internal" href="../libhashkit/index.html">libhashkit API</a></li>
 121 </ul>
 122 <p class="caption"><span class="caption-text">Client Applications</span></p>
 123 <ul>
 124 <li class="toctree-l1"><a class="reference internal" href="../bin/index.html">Client Applications</a></li>
 125 </ul>
 126 <p class="caption"><span class="caption-text">Copyright</span></p>
 127 <ul>
 128 <li class="toctree-l1"><a class="reference internal" href="../copyright.html">Copyright</a></li>
 129 </ul>
 130
 131
 132
 133         </div>
 134       </div>
 135     </nav>
 136
 137     <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
 138
 139
 140       <nav class="wy-nav-top" aria-label="top navigation">
 141
 142           <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
 143           <a href="../index.html">libmemcached</a>
 144
 145       </nav>
 146
 147
 148       <div class="wy-nav-content">
 149
 150         <div class="rst-content">
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168 <div role="navigation" aria-label="breadcrumbs navigation">
 169
 170   <ul class="wy-breadcrumbs">
 171
 172       <li><a href="../index.html">Docs</a> &raquo;</li>
 173
 174           <li><a href="index.html">libmemcached API</a> &raquo;</li>
 175
 176           <li><a href="index_advanced.html">Advanced Topics</a> &raquo;</li>
 177
 178           <li><a href="index_advanced_servers.html">Servers and Server Lists</a> &raquo;</li>
 179
 180       <li>Managing lists of servers</li>
 181
 182
 183       <li class="wy-breadcrumbs-aside">
 184
 185
 186
 187       </li>
 188
 189   </ul>
 190
 191
 192   <hr/>
 193 </div>
 194           <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
 195            <div itemprop="articleBody">
 196
 197   <div class="section" id="managing-lists-of-servers">
 198 <h1>Managing lists of servers<a class="headerlink" href="#managing-lists-of-servers" 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 <dl class="docutils">
 202 <dt>#include &lt;libmemcached/memcached.h&gt;</dt>
 203 <dd>Compile and link with -lmemcached</dd>
 204 </dl>
 205 <dl class="type">
 206 <dt id="c.memcached_instance_st">
 207 struct <a class="reference internal" href="#c.memcached_instance_st" title="memcached_instance_st">memcached_instance_st</a> <code class="descname">memcached_instance_st</code><a class="headerlink" href="#c.memcached_instance_st" title="Permalink to this definition">¶</a></dt>
 208 <dd></dd></dl>
 209
 210 <dl class="type">
 211 <dt id="c.memcached_server_st">
 212 struct <a class="reference internal" href="#c.memcached_server_st" title="memcached_server_st">memcached_server_st</a> <code class="descname">memcached_server_st</code><a class="headerlink" href="#c.memcached_server_st" title="Permalink to this definition">¶</a></dt>
 213 <dd></dd></dl>
 214
 215 <dl class="type">
 216 <dt id="c.memcached_server_list_st">
 217 struct <a class="reference internal" href="#c.memcached_server_st" title="memcached_server_st">memcached_server_st</a> *<code class="descname">memcached_server_list_st</code><a class="headerlink" href="#c.memcached_server_list_st" title="Permalink to this definition">¶</a></dt>
 218 <dd></dd></dl>
 219
 220 <dl class="function">
 221 <dt id="_CPPv426memcached_server_list_free24memcached_server_list_st">
 222 <span id="_CPPv326memcached_server_list_free24memcached_server_list_st"></span><span id="_CPPv226memcached_server_list_free24memcached_server_list_st"></span><span id="memcached_server_list_free__memcached_server_list_st"></span>void <code class="descname">memcached_server_list_free</code><span class="sig-paren">(</span>memcached_server_list_st <em>list</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv426memcached_server_list_free24memcached_server_list_st" title="Permalink to this definition">¶</a><br /></dt>
 223 <dd><table class="docutils field-list" frame="void" rules="none">
 224 <col class="field-name" />
 225 <col class="field-body" />
 226 <tbody valign="top">
 227 <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>list</strong> -- instance of initialized <code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached_server_list_st</span></code> object</td>
 228 </tr>
 229 </tbody>
 230 </table>
 231 </dd></dl>
 232
 233 <dl class="function">
 234 <dt id="_CPPv428memcached_server_list_append24memcached_server_list_stPKc9in_port_tP18memcached_return_t">
 235 <span id="_CPPv328memcached_server_list_append24memcached_server_list_stPKc9in_port_tP18memcached_return_t"></span><span id="_CPPv228memcached_server_list_append24memcached_server_list_stPKc9in_port_tP18memcached_return_t"></span><span id="memcached_server_list_append__memcached_server_list_st.cCP.in_port_t.memcached_return_tP"></span>memcached_server_list_st <code class="descname">memcached_server_list_append</code><span class="sig-paren">(</span>memcached_server_list_st <em>list</em>, <em class="property">const</em> char *<em>hostname</em>, in_port_t <em>port</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="#_CPPv428memcached_server_list_append24memcached_server_list_stPKc9in_port_tP18memcached_return_t" title="Permalink to this definition">¶</a><br /></dt>
 236 <dd><table class="docutils field-list" frame="void" rules="none">
 237 <col class="field-name" />
 238 <col class="field-body" />
 239 <tbody valign="top">
 240 <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
 241 <li><strong>list</strong> -- instance of an existing <code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached_server_list_st</span></code> or nullptr to create one</li>
 242 <li><strong>hostname</strong> -- the hostname or path to the socket, defaults to localhost if null</li>
 243 <li><strong>port</strong> -- the port to use, defaults to 11211 if 0</li>
 244 <li><strong>error</strong> -- pointer to store any <a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t"><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached_return_t</span></code></a> error indicating success</li>
 245 </ul>
 246 </td>
 247 </tr>
 248 <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">new instance of <code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached_server_list_st</span></code> on success or nullptr on failure</p>
 249 </td>
 250 </tr>
 251 </tbody>
 252 </table>
 253 </dd></dl>
 254
 255 <dl class="function">
 256 <dt id="_CPPv427memcached_server_list_count24memcached_server_list_st">
 257 <span id="_CPPv327memcached_server_list_count24memcached_server_list_st"></span><span id="_CPPv227memcached_server_list_count24memcached_server_list_st"></span><span id="memcached_server_list_count__memcached_server_list_st"></span>uint32_t <code class="descname">memcached_server_list_count</code><span class="sig-paren">(</span>memcached_server_list_st <em>list</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv427memcached_server_list_count24memcached_server_list_st" title="Permalink to this definition">¶</a><br /></dt>
 258 <dd><table class="docutils field-list" frame="void" rules="none">
 259 <col class="field-name" />
 260 <col class="field-body" />
 261 <tbody valign="top">
 262 <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>list</strong> -- instance of <code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached_server_list_st</span></code></td>
 263 </tr>
 264 <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">count of servers in the list</td>
 265 </tr>
 266 </tbody>
 267 </table>
 268 </dd></dl>
 269
 270 <dl class="function">
 271 <dt id="_CPPv422memcached_server_errorPK21memcached_instance_st">
 272 <span id="_CPPv322memcached_server_errorPK21memcached_instance_st"></span><span id="_CPPv222memcached_server_errorPK21memcached_instance_st"></span><span id="memcached_server_error__memcached_instance_stCP"></span><em class="property">const</em> char *<code class="descname">memcached_server_error</code><span class="sig-paren">(</span><em class="property">const</em> memcached_instance_st *<em>instance</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv422memcached_server_errorPK21memcached_instance_st" title="Permalink to this definition">¶</a><br /></dt>
 273 <dd><table class="docutils field-list" frame="void" rules="none">
 274 <col class="field-name" />
 275 <col class="field-body" />
 276 <tbody valign="top">
 277 <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>instance</strong> -- pointer to an initialized <code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached_instance_st</span></code> object</td>
 278 </tr>
 279 <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">last error message sent from the server to the client</td>
 280 </tr>
 281 </tbody>
 282 </table>
 283 </dd></dl>
 284
 285 <dl class="function">
 286 <dt id="_CPPv428memcached_server_error_resetPK21memcached_instance_st">
 287 <span id="_CPPv328memcached_server_error_resetPK21memcached_instance_st"></span><span id="_CPPv228memcached_server_error_resetPK21memcached_instance_st"></span><span id="memcached_server_error_reset__memcached_instance_stCP"></span>void <code class="descname">memcached_server_error_reset</code><span class="sig-paren">(</span><em class="property">const</em> memcached_instance_st *<em>list</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv428memcached_server_error_resetPK21memcached_instance_st" title="Permalink to this definition">¶</a><br /></dt>
 288 <dd><div class="deprecated">
 289 <p><span class="versionmodified">Deprecated since version 0.39.</span></p>
 290 </div>
 291 </dd></dl>
 292
 293 <dl class="function">
 294 <dt id="_CPPv423memcached_servers_parsev">
 295 <span id="_CPPv323memcached_servers_parsev"></span><span id="_CPPv223memcached_servers_parsev"></span><span id="memcached_servers_parse"></span>void <code class="descname">memcached_servers_parse</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv423memcached_servers_parsev" title="Permalink to this definition">¶</a><br /></dt>
 296 <dd><div class="deprecated">
 297 <p><span class="versionmodified">Deprecated since version 0.39.</span></p>
 298 </div>
 299 <p>See <a class="reference internal" href="configuration.html#_CPPv49memcachedPKc6size_t" title="memcached"><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached()</span></code></a>.</p>
 300 </dd></dl>
 301
 302 </div>
 303 <div class="section" id="description">
 304 <h2>DESCRIPTION<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
 305 <p><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">libmemcached</span></code> operates on a list of hosts which are stored in
 306 <code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_server_st</span></code> structures. You should not modify these structures
 307 directly. Functions are provided to modify these structures.</p>
 308 <p><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_list()</span></code> is used to provide an array of all defined hosts.
 309 This was incorrectly documented as &quot;requiring free&quot; up till version 0.39.</p>
 310 <p><a class="reference internal" href="#_CPPv426memcached_server_list_free24memcached_server_list_st" title="memcached_server_list_free"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_list_free()</span></code></a> deallocates all memory associated with the
 311 array of <code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_server_st</span></code> that you passed to it.</p>
 312 <p><a class="reference internal" href="#_CPPv428memcached_server_list_append24memcached_server_list_stPKc9in_port_tP18memcached_return_t" title="memcached_server_list_append"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_list_append()</span></code></a> adds a server to the end of a
 313 <code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_server_st</span></code> array. On error null will be returned and the
 314 <a class="reference internal" href="memcached_return_t.html#_CPPv418memcached_return_t" title="memcached_return_t"><code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_return_t</span></code></a> pointer you passed into the function will be set with the appropriate error. If the value of port is zero, it is set to the default
 315 port of a memcached server.</p>
 316 <p>DEPRECATED <a class="reference internal" href="#_CPPv423memcached_servers_parsev" title="memcached_servers_parse"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_servers_parse()</span></code></a>, please see <a class="reference internal" href="configuration.html#_CPPv49memcachedPKc6size_t" title="memcached"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached()</span></code></a></p>
 317 <p><a class="reference internal" href="#_CPPv422memcached_server_errorPK21memcached_instance_st" title="memcached_server_error"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">memcached_server_error()</span></code></a> can be used to look at the text of the last
 318 error message sent by the server to to the client.</p>
 319 <p>Before version 0.39 theses functions used a memcached_server_st *. In 0.39
 320 memcached_server_st * was aliased to <code class="xref cpp cpp-type docutils literal notranslate"><span class="pre">memcached_server_list_st</span></code>.
 321 This was done for a style reason to help clean up some concepts in the code.</p>
 322 </div>
 323 <div class="section" id="return-value">
 324 <h2>RETURN VALUE<a class="headerlink" href="#return-value" title="Permalink to this headline">¶</a></h2>
 325 <p>Varies, see particular functions.</p>
 326 </div>
 327 <div class="section" id="see-also">
 328 <h2>SEE ALSO<a class="headerlink" href="#see-also" title="Permalink to this headline">¶</a></h2>
 329 <ul class="simple">
 330 <li><em class="manpage"><a class="manpage reference external" href="https://linux.die.net/man/1/memcached">memcached(1)</a></em></li>
 331 <li><a class="reference internal" href="../libmemcached.html"><span class="doc">C/C++ Client Library for memcached</span></a></li>
 332 <li><a class="reference internal" href="memcached_servers.html"><span class="doc">Managing the servers used by memcached_st</span></a></li>
 333 <li><a class="reference internal" href="memcached_strerror.html"><span class="doc">Converting Error Codes to Messages</span></a></li>
 334 </ul>
 335 </div>
 336 </div>
 337
 338
 339            </div>
 340
 341           </div>
 342           <footer>
 343
 344     <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
 345
 346         <a href="memcached_servers.html" class="btn btn-neutral float-right" title="Managing the servers used by memcached_st" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
 347
 348
 349         <a href="index_advanced_servers.html" class="btn btn-neutral float-left" title="Servers and Server Lists" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
 350
 351     </div>
 352
 353
 354   <hr/>
 355
 356   <div role="contentinfo">
 357     <p>
 358         &copy; <a href="../copyright.html">Copyright</a>
 359
 360     </p>
 361   </div>
 362   Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
 363
 364 </footer>
 365
 366         </div>
 367       </div>
 368
 369     </section>
 370
 371   </div>
 372
 373
 374
 375   <script type="text/javascript">
 376       jQuery(function () {
 377           SphinxRtdTheme.Navigation.enable(true);
 378       });
 379   </script>
 380
 381
 382
 383
 384
 385
 386 </body>
 387 </html>