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authordeva <deva>2009-12-17 12:45:20 +0000
committerdeva <deva>2009-12-17 12:45:20 +0000
commitf74d220ba0723b38faeef5aeca39cd627dc3340d (patch)
treef9723da4d337c1d8fa8302be2bd6e825f8eddd56 /server/src/connectionpool.h
parentbe4fc7990b91e1fb053df4a1388f13aaad9772f8 (diff)
Added connection pool class. Using semaphores (also added)
Diffstat (limited to 'server/src/connectionpool.h')
-rw-r--r--server/src/connectionpool.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/server/src/connectionpool.h b/server/src/connectionpool.h
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+++ b/server/src/connectionpool.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ * connectionpool.h
+ *
+ * Wed Dec 16 12:20:44 CET 2009
+ * Copyright 2009 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of Pracro.
+ *
+ * Pracro is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Pracro is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pracro; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#ifndef __PRACRO_CONNECTIONPOOL_H__
+#define __PRACRO_CONNECTIONPOOL_H__
+
+#include <list>
+
+#include "mutex.h"
+#include "semaphore.h"
+
+class Database;
+
+class ConnectionPool {
+public:
+ ConnectionPool();
+
+ void addDatabase(Database *db);
+ void removeDatabase(Database *db);
+
+ bool testFree(Database *db);
+ int numFreeDatabases();
+
+ Database *borrowDatabase();
+ void returnDatabase(Database *db);
+
+private:
+ Semaphore semaphore;
+ Mutex mutex;
+ std::list<Database *> activedbs;
+ std::list<Database *> passivedbs;
+};
+
+class AutoBorrower {
+public:
+ AutoBorrower(ConnectionPool &pool);
+ ~AutoBorrower();
+
+ Database *db();
+
+private:
+ ConnectionPool &pool;
+ Database *_db;
+};
+
+#endif/*__PRACRO_CONNECTIONPOOL_H__*/