1 files changed, 92 insertions, 0 deletions
diff --git a/storage/ndb/src/ndbapi/DictCache.hpp b/storage/ndb/src/ndbapi/DictCache.hpp
new file mode 100644
index 00000000000..58c08a93e61
--- /dev/null
+++ b/storage/ndb/src/ndbapi/DictCache.hpp
@@ -0,0 +1,92 @@
+/* Copyright (C) 2003 MySQL AB
+
+   This program 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.
+
+   This program 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 this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#ifndef DictCache_H
+#define DictCache_H
+
+#include <ndb_types.h>
+#include <kernel_types.h>
+#include <NdbError.hpp>
+#include <BaseString.hpp>
+#include <Vector.hpp>
+#include <UtilBuffer.hpp>
+#include <NdbDictionary.hpp>
+#include <Ndb.hpp>
+#include <NdbCondition.h>
+#include "NdbLinHash.hpp"
+
+class Ndb_local_table_info {
+public:
+  static Ndb_local_table_info *create(NdbTableImpl *table_impl, Uint32 sz=0);
+  static void destroy(Ndb_local_table_info *);
+  NdbTableImpl *m_table_impl;
+  Uint64 m_local_data[1];
+private:
+  Ndb_local_table_info(NdbTableImpl *table_impl);
+  ~Ndb_local_table_info();
+};
+
+/**
+ * A non thread safe dict cache
+ */
+class LocalDictCache {
+public:
+  LocalDictCache();
+  ~LocalDictCache();
+  
+  Ndb_local_table_info * get(const char * name);
+  
+  void put(const char * name, Ndb_local_table_info *);
+  void drop(const char * name);
+  
+  NdbLinHash<Ndb_local_table_info> m_tableHash; // On name
+};
+
+/**
+ * A thread safe dict cache
+ */
+class GlobalDictCache : public NdbLockable {
+public:
+  GlobalDictCache();
+  ~GlobalDictCache();
+  
+  NdbTableImpl * get(const char * name);
+  
+  NdbTableImpl* put(const char * name, NdbTableImpl *);
+  void drop(NdbTableImpl *);
+  void release(NdbTableImpl *);
+public:
+  enum Status {
+    OK = 0,
+    DROPPED = 1,
+    RETREIVING = 2
+  };
+  
+private:
+  struct TableVersion {
+    Uint32 m_version;
+    Uint32 m_refCount;
+    NdbTableImpl * m_impl;
+    Status m_status;
+  };
+  
+  NdbLinHash<Vector<TableVersion> > m_tableHash;
+  NdbCondition * m_waitForTableCondition;
+};
+
+#endif
+
+