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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>server.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> </center><hr><h1>server.h</h1><div class="fragment"><pre>00001 <span class="comment">//-< SERVER.CPP >----------------------------------------------------*--------*</span>00002 <span class="comment">// FastDB Version 1.0 (c) 1999 GARRET * ? *</span>00003 <span class="comment">// (Main Memory Database Management System) * /\| *</span>00004 <span class="comment">// * / \ *</span>00005 <span class="comment">// Created: 13-Jan-2000 K.A. Knizhnik * / [] \ *</span>00006 <span class="comment">// Last update: 13-Jan-2000 K.A. Knizhnik * GARRET *</span>00007 <span class="comment">//-------------------------------------------------------------------*--------*</span>00008 <span class="comment">// CLI multithreaded server class</span>00009 <span class="comment">//-------------------------------------------------------------------*--------*</span>00010 00011 <span class="preprocessor">#ifndef __SERVER_H__</span>00012 <span class="preprocessor"></span><span class="preprocessor">#define __SERVER_H__</span>00013 <span class="preprocessor"></span>00014 <span class="preprocessor">#include "sockio.h"</span>00015 00016 BEGIN_FASTDB_NAMESPACE00017 00018 <span class="keyword">class </span>dbColumnBinding { 00019 <span class="keyword">public</span>:00020 dbColumnBinding* next;00021 <a class="code" href="classdbFieldDescriptor.html">dbFieldDescriptor</a>* fd;00022 <span class="keywordtype">int</span> cliType;00023 <span class="keywordtype">int</span> len;00024 <span class="keywordtype">char</span>* ptr;00025 00026 <span class="keywordtype">int</span> unpackArray(<span class="keywordtype">char</span>* dst, size_t offs);00027 <span class="keywordtype">void</span> unpackScalar(<span class="keywordtype">char</span>* dst);00028 00029 dbColumnBinding(<a class="code" href="classdbFieldDescriptor.html">dbFieldDescriptor</a>* field, <span class="keywordtype">int</span> type) { 00030 fd = field;00031 cliType = type;00032 next = NULL;00033 }00034 };00035 00036 <span class="keyword">struct </span>dbParameterBinding { 00037 <span class="keyword">union </span>{ 00038 int1 i1;00039 int2 i2;00040 int4 i4;00041 db_int8 i8;00042 real4 r4;00043 real8 r8;00044 oid_t oid;00045 <span class="keywordtype">bool</span> b;00046 <span class="keywordtype">char</span>* str;00047 <a class="code" href="classrectangle.html">rectangle</a> rect;00048 } u;00049 <span class="keywordtype">int</span> type;00050 };00051 00052 <span class="keyword">const</span> <span class="keywordtype">int</span> dbQueryMaxIdLength = 256;00053 00054 <span class="keyword">class </span>dbQueryScanner { 00055 <span class="keyword">public</span>:00056 <span class="keywordtype">char</span>* p;00057 db_int8 ival;00058 real8 fval;00059 <span class="keywordtype">char</span> buf[dbQueryMaxIdLength];00060 <span class="keywordtype">char</span>* ident;00061 00062 <span class="keywordtype">int</span> get();00063 00064 <span class="keywordtype">void</span> reset(<span class="keywordtype">char</span>* stmt) { 00065 p = stmt;00066 }00067 };00068 00069 <span class="keyword">class </span>dbStatement { 00070 <span class="keyword">public</span>:00071 <span class="keywordtype">int</span> id;00072 <span class="keywordtype">bool</span> firstFetch;00073 dbStatement* next;00074 <a class="code" href="classdbAnyCursor.html">dbAnyCursor</a>* cursor; 00075 <a class="code" href="classdbQuery.html">dbQuery</a> query;00076 dbColumnBinding* columns;00077 <span class="keywordtype">char</span>* buf;00078 <span class="keywordtype">int</span> buf_size;00079 <span class="keywordtype">int</span> n_params;00080 <span class="keywordtype">int</span> n_columns;00081 dbParameterBinding* params;00082 <a class="code" href="classdbTableDescriptor.html">dbTableDescriptor</a>* table;00083 00084 <span class="keywordtype">void</span> reset();00085 00086 dbStatement(<span class="keywordtype">int</span> stmt_id) { 00087 id = stmt_id;00088 columns = NULL;00089 params = NULL;00090 buf = NULL;00091 buf_size = 0;00092 table = NULL;00093 cursor = NULL;00094 }00095 ~dbStatement() { 00096 reset(); 00097 <span class="keyword">delete</span>[] buf;00098 }00099 };00100 00101 <span class="keyword">class </span>dbSession { 00102 <span class="keyword">public</span>:00103 dbSession* next; 00104 dbStatement* stmts;00105 dbQueryScanner scanner;00106 socket_t* sock;00107 <span class="keywordtype">bool</span> in_transaction;00108 <a class="code" href="classdbTableDescriptor.html">dbTableDescriptor</a>* dropped_tables;00109 <a class="code" href="classdbTableDescriptor.html">dbTableDescriptor</a>* existed_tables;00110 };00111 00112 <span class="keyword">class </span>dbServer { 00113 <span class="keyword">protected</span>:00114 <span class="keyword">static</span> dbServer* chain;00115 dbServer* next;00116 <span class="keywordtype">char</span>* URL;00117 dbSession* freeList;00118 dbSession* waitList;00119 dbSession* activeList;00120 <span class="keywordtype">int</span> optimalNumberOfThreads;00121 <span class="keywordtype">int</span> nActiveThreads;00122 <span class="keywordtype">int</span> nIdleThreads;00123 <span class="keywordtype">int</span> waitListLength;00124 <span class="keywordtype">bool</span> cancelWait;00125 <span class="keywordtype">bool</span> cancelAccept;00126 <span class="keywordtype">bool</span> cancelSession;00127 dbMutex mutex;00128 dbLocalSemaphore go;00129 dbLocalSemaphore done;00130 socket_t* globalAcceptSock;00131 socket_t* localAcceptSock;00132 dbThread localAcceptThread;00133 dbThread globalAcceptThread;00134 <a class="code" href="classdbDatabase.html">dbDatabase</a>* db;00135 00136 <span class="keyword">static</span> <span class="keywordtype">void</span> thread_proc serverThread(<span class="keywordtype">void</span>* arg);00137 <span class="keyword">static</span> <span class="keywordtype">void</span> thread_proc acceptLocalThread(<span class="keywordtype">void</span>* arg);00138 <span class="keyword">static</span> <span class="keywordtype">void</span> thread_proc acceptGlobalThread(<span class="keywordtype">void</span>* arg);00139 00140 <span class="keywordtype">void</span> serveClient();00141 <span class="keywordtype">void</span> acceptConnection(socket_t* sock);00142 00143 00144 <span class="keywordtype">bool</span> freeze(dbSession* session, <span class="keywordtype">int</span> stmt_id);00145 <span class="keywordtype">bool</span> unfreeze(dbSession* session, <span class="keywordtype">int</span> stmt_id);00146 <span class="keywordtype">bool</span> get_first(dbSession* session, <span class="keywordtype">int</span> stmt_id);00147 <span class="keywordtype">bool</span> get_last(dbSession* session, <span class="keywordtype">int</span> stmt_id);00148 <span class="keywordtype">bool</span> get_next(dbSession* session, <span class="keywordtype">int</span> stmt_id);00149 <span class="keywordtype">bool</span> get_prev(dbSession* session, <span class="keywordtype">int</span> stmt_id);00150 <span class="keywordtype">bool</span> seek(dbSession* session, <span class="keywordtype">int</span> stmt_id, <span class="keywordtype">char</span>* buf);00151 <span class="keywordtype">bool</span> skip(dbSession* session, <span class="keywordtype">int</span> stmt_id, <span class="keywordtype">char</span>* buf);00152 <span class="keywordtype">bool</span> fetch(dbSession* session, dbStatement* stmt, oid_t result);00153 <span class="keywordtype">bool</span> fetch(dbSession* session, dbStatement* stmt) { 00154 <span class="keywordflow">return</span> fetch(session, stmt, stmt->cursor->currId);00155 }00156 <span class="keywordtype">bool</span> remove(dbSession* session, <span class="keywordtype">int</span> stmt_id);00157 <span class="keywordtype">bool</span> remove_current(dbSession* session, <span class="keywordtype">int</span> stmt_id);00158 <span class="keywordtype">bool</span> update(dbSession* session, <span class="keywordtype">int</span> stmt_id, <span class="keywordtype">char</span>* new_data);00159 <span class="keywordtype">bool</span> insert(dbSession* session, <span class="keywordtype">int</span> stmt_id, <span class="keywordtype">char</span>* data, <span class="keywordtype">bool</span> prepare);00160 <span class="keywordtype">bool</span> select(dbSession* session, <span class="keywordtype">int</span> stmt_id, <span class="keywordtype">char</span>* data, <span class="keywordtype">bool</span> prepare);00161 <span class="keywordtype">bool</span> show_tables(dbSession* session); 00162 <span class="keywordtype">bool</span> describe_table(dbSession* session, <span class="keywordtype">char</span> <span class="keyword">const</span>* table);00163 <span class="keywordtype">bool</span> create_table(dbSession* session, <span class="keywordtype">char</span>* data, <span class="keywordtype">bool</span> create);00164 <span class="keywordtype">bool</span> drop_table(dbSession* session, <span class="keywordtype">char</span>* data);00165 <span class="keywordtype">bool</span> alter_index(dbSession* session, <span class="keywordtype">char</span>* data);00166 00167 <span class="keywordtype">char</span>* checkColumns(dbStatement* stmt, <span class="keywordtype">int</span> n_columns, 00168 <a class="code" href="classdbTableDescriptor.html">dbTableDescriptor</a>* desc, <span class="keywordtype">char</span>* data, 00169 int4& reponse);00170 00171 dbStatement* findStatement(dbSession* stmt, <span class="keywordtype">int</span> stmt_id);00172 00173 <span class="keyword">public</span>:00174 <span class="keyword">static</span> dbServer* find(<span class="keywordtype">char</span> <span class="keyword">const</span>* serverURL);00175 <span class="keyword">static</span> <span class="keywordtype">void</span> cleanup();00176 00177 <span class="keywordtype">void</span> stop();00178 <span class="keywordtype">void</span> start();00179 00180 dbServer(<a class="code" href="classdbDatabase.html">dbDatabase</a>* db,00181 <span class="keywordtype">char</span> <span class="keyword">const</span>* serverURL, 00182 <span class="keywordtype">int</span> optimalNumberOfThreads = 8, 00183 <span class="keywordtype">int</span> connectionQueueLen = 64);00184 ~dbServer();00185 };00186 00187 END_FASTDB_NAMESPACE00188 00189 <span class="preprocessor">#endif</span></pre></div><hr><address style="align: right;"><small>Generated on Mon Oct 23 13:23:58 2006 for FastDB by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.18 </small></address></body></html>⌨️ 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