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diff --git a/sql/sp_cache.h b/sql/sp_cache.h
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+/* -*- C++ -*- */
+/* Copyright (C) 2002 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 _SP_CACHE_H_
+#define _SP_CACHE_H_
+
+#ifdef __GNUC__
+#pragma interface			/* gcc class implementation */
+#endif
+
+class sp_head;
+class sp_cache;
+
+/* Initialize the SP caching once at startup */
+void sp_cache_init();
+
+/* Clear the cache *cp and set *cp to NULL */
+void sp_cache_clear(sp_cache **cp);
+
+/* Insert an SP to cache. If 'cp' points to NULL, it's set to a new cache */
+void sp_cache_insert(sp_cache **cp, sp_head *sp);
+
+/* Lookup an SP in cache */
+sp_head *sp_cache_lookup(sp_cache **cp, char *name, uint namelen);
+
+/* Remove an SP from cache */
+sp_head *sp_cache_remove(sp_cache **cp, char *name, uint namelen);
+
+
+/*
+ *
+ * The cache class. Don't use this directly, use the C API above
+ *
+ */
+
+class sp_cache
+{
+public:
+
+  ulong version;
+
+  sp_cache();
+
+  ~sp_cache();
+
+  void
+  init();
+
+  void
+  cleanup();
+
+  inline void
+  insert(sp_head *sp)
+  {
+    my_hash_insert(&m_hashtable, (const byte *)sp);
+  }
+
+  inline sp_head *
+  lookup(char *name, uint namelen)
+  {
+    return (sp_head *)hash_search(&m_hashtable, (const byte *)name, namelen);
+  }
+
+  inline sp_head *
+  remove(char *name, uint namelen)
+  {
+    sp_head *sp= lookup(name, namelen);
+
+    if (sp)
+      hash_delete(&m_hashtable, (byte *)sp);
+    return sp;
+  }
+
+  inline void
+  remove_all()
+  {
+    cleanup();
+    init();
+  }
+
+private:
+
+  HASH m_hashtable;
+
+}; // class sp_cache
+
+#endif /* _SP_CACHE_H_ */