1 files changed, 65 insertions, 0 deletions
diff --git a/sql/cache_manager.h b/sql/cache_manager.h
new file mode 100644
index 00000000000..fc3b8f7016a
--- /dev/null
+++ b/sql/cache_manager.h
@@ -0,0 +1,65 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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 */
+
+#ifdef __GNUC__
+#pragma interface			/* gcc class implementation */
+#endif
+
+#ifndef _CACHE_MANAGER_H_
+#define _CACHE_MANAGER_H_
+#endif
+
+/*
+  cache_manager.h
+  -----------------------------------------------------------------------
+  The cache_manager class manages a number of blocks (which are allocatable
+  units of memory).
+  -----------------------------------------------------------------------
+*/
+
+
+
+class cache_manager {
+  void **abs_list;                /* List holding block abstraction ptrs */
+
+  typedef struct free_blks {
+    struct free_blks *next, **prev;
+    uint Size;
+  } FREE_BLKS;
+  FREE_BLKS *base_ptr;            /* Pointer to newly allocated sys mem  */
+
+
+  /* list manipulation methods */
+  void *link_into_abs(void *);    /* Return an abstract pointer to blk   */
+  bool *unlink_from_abs(void *);  /* Used to dealloc a blk               */
+  void *find_in_fblist(uint);     /*   */
+
+  /* memory allocation methods */
+  void defrag(void);              /* Defragment the cache                */
+  bool *init_blk(void *);         /* Return a pointer to new list        */
+
+ public:
+  cache_manager(uint);            /* Get allocation of size from system  */
+  ~cache_manager(void);           /* Destructor; return the cache        */
+
+  void *alloc(uint);              /* Alloc size bytes from the cache     */
+  bool *dealloc(void *);          /* Deallocate blocks (with *ptr_arg)   */
+  void clear(void);               /* Clear the cache                     */
+};
+
+
+
+