1 files changed, 96 insertions, 0 deletions
diff --git a/sql/handler.cc b/sql/handler.cc
index b290c5acaa7..d768ad4dc5d 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -30,6 +30,10 @@
 #include <myisampack.h>
 #include <errno.h>
 
+#ifdef WITH_MARIA_STORAGE_ENGINE
+#include <maria.h>
+#endif
+
 #ifdef WITH_PARTITION_STORAGE_ENGINE
 #include "ha_partition.h"
 #endif
@@ -2789,6 +2793,98 @@ int ha_change_key_cache(KEY_CACHE *old_key_cache,
 }
 
 
+/*****************************************************************************
+  pagecache handling.
+
+  This code is only relevant for maria tables
+
+  pagecache->cache may be 0 only in the case where a key cache is not
+  initialized or when we where not able to init the key cache in a previous
+  call to ha_init_pagecache() (probably out of memory)
+*****************************************************************************/
+
+
+#ifdef WITH_MARIA_STORAGE_ENGINE
+
+/* Init a pagecache if it has not been initied before */
+
+int ha_init_pagecache(const char *name, PAGECACHE *pagecache)
+{
+  DBUG_ENTER("ha_init_key_cache");
+
+  if (!pagecache->inited)
+  {
+    pthread_mutex_lock(&LOCK_global_system_variables);
+    long tmp_buff_size= (long) pagecache->param_buff_size;
+    uint division_limit= pagecache->param_division_limit;
+    uint age_threshold=  pagecache->param_age_threshold;
+    pthread_mutex_unlock(&LOCK_global_system_variables);
+    DBUG_RETURN(!init_pagecache(pagecache,
+				tmp_buff_size, division_limit, age_threshold,
+				MARIA_KEY_BLOCK_LENGTH));
+  }
+  DBUG_RETURN(0);
+}
+
+
+/* Resize key cache */
+/*
+TODO: uncomment when resize will be implemented
+int ha_resize_pagecache(PAGECACHE *pagecache)
+{
+  DBUG_ENTER("ha_resize_pagecache");
+
+  if (pagecache->inited)
+  {
+    pthread_mutex_lock(&LOCK_global_system_variables);
+    long tmp_buff_size= (long) pagecache->param_buff_size;
+    long tmp_block_size= (long) pagecache->param_block_size;
+    uint division_limit= pagecache->param_division_limit;
+    uint age_threshold=  pagecache->param_age_threshold;
+    pthread_mutex_unlock(&LOCK_global_system_variables);
+    DBUG_RETURN(!resize_pagecache(pagecache, tmp_block_size,
+				  tmp_buff_size,
+				  division_limit, age_threshold));
+  }
+  DBUG_RETURN(0);
+}
+*/
+
+
+/* Change parameters for key cache (like size) */
+
+int ha_change_pagecache_param(PAGECACHE *pagecache)
+{
+  if (pagecache->inited)
+  {
+    pthread_mutex_lock(&LOCK_global_system_variables);
+    uint division_limit= pagecache->param_division_limit;
+    uint age_threshold=  pagecache->param_age_threshold;
+    pthread_mutex_unlock(&LOCK_global_system_variables);
+    change_pagecache_param(pagecache, division_limit, age_threshold);
+  }
+  return 0;
+}
+
+/* Free memory allocated by a key cache */
+
+int ha_end_pagecache(PAGECACHE *pagecache)
+{
+  end_pagecache(pagecache, 1);		// Can never fail
+  return 0;
+}
+
+/* Move all tables from one key cache to another one */
+
+int ha_change_pagecache(PAGECACHE *old_pagecache,
+			PAGECACHE *new_pagecache)
+{
+  maria_change_pagecache(old_pagecache, new_pagecache);
+  return 0;
+}
+
+#endif /* WITH_MARIA_STORAGE_ENGINE */
+
 /** @brief
   Try to discover one table from handler(s)