Bug#10932 - Building server with key limit of 128, makes test cases fail

This patch allows to configure MyISAM for 128 indexes per table.
The main problem is the key_map, wich is implemented as an ulonglong.
To get rid of the limit and keep the efficient and flexible
implementation, the highest bit is now used for all upper keys.
This means that the lower keys can be disabled and enabled 
individually as usual and the high keys can only be disabled and
enabled as a block. That way the existing test suite is still
applicable, while more keys work, though slightly less efficient.
To really get more than 64 keys, some defines need to be changed.
Another patch will address this.

1 files changed, 8 insertions, 8 deletions

diff --git a/myisam/mi_open.c b/myisam/mi_open.c
index 74b97a65609..82663e0c318 100644
--- a/myisam/mi_open.c
+++ b/myisam/mi_open.c
@@ -192,14 +192,14 @@ MI_INFO *mi_open(const char *name, int mode, uint open_flags)
     }
     share->state_diff_length=len-MI_STATE_INFO_SIZE;
 
-    mi_state_info_read(disk_cache, &share->state);
+    mi_state_info_read((uchar*) disk_cache, &share->state);
     len= mi_uint2korr(share->state.header.base_info_length);
     if (len != MI_BASE_INFO_SIZE)
     {
       DBUG_PRINT("warning",("saved_base_info_length: %d  base_info_length: %d",
 			    len,MI_BASE_INFO_SIZE))
     }
-    disk_pos=my_n_base_info_read(disk_cache+base_pos, &share->base);
+    disk_pos=my_n_base_info_read((uchar*) disk_cache + base_pos, &share->base);
     share->state.state_length=base_pos;
 
     if (!(open_flags & HA_OPEN_FOR_REPAIR) &&
@@ -863,7 +863,7 @@ uint mi_state_info_write(File file, MI_STATE_INFO *state, uint pWrite)
 }
 
 
-char *mi_state_info_read(char *ptr, MI_STATE_INFO *state)
+char *mi_state_info_read(uchar *ptr, MI_STATE_INFO *state)
 {
   uint i,keys,key_parts,key_blocks;
   memcpy_fixed(&state->header,ptr, sizeof(state->header));
@@ -929,7 +929,7 @@ uint mi_state_info_read_dsk(File file, MI_STATE_INFO *state, my_bool pRead)
     }
     else if (my_read(file, buff, state->state_length,MYF(MY_NABP)))
       return (MY_FILE_ERROR);
-    mi_state_info_read(buff, state);
+    mi_state_info_read((uchar*) buff, state);
   }
   return 0;
 }
@@ -974,7 +974,7 @@ uint mi_base_info_write(File file, MI_BASE_INFO *base)
 }
 
 
-char *my_n_base_info_read(char *ptr, MI_BASE_INFO *base)
+char *my_n_base_info_read(uchar *ptr, MI_BASE_INFO *base)
 {
   base->keystart = mi_sizekorr(ptr);			ptr +=8;
   base->max_data_file_length = mi_sizekorr(ptr);	ptr +=8;
@@ -1204,7 +1204,7 @@ int mi_disable_indexes(MI_INFO *info)
 {
   MYISAM_SHARE *share= info->s;
 
-  share->state.key_map= 0;
+  mi_clear_all_keys_active(share->state.key_map);
   return 0;
 }
 
@@ -1240,7 +1240,7 @@ int mi_enable_indexes(MI_INFO *info)
     error= HA_ERR_CRASHED;
   }
   else
-    share->state.key_map= ((ulonglong) 1L << share->base.keys) - 1;
+    mi_set_all_keys_active(share->state.key_map, share->base.keys);
   return error;
 }
 
@@ -1265,6 +1265,6 @@ int mi_indexes_are_disabled(MI_INFO *info)
 {
   MYISAM_SHARE *share= info->s;
 
-  return (! share->state.key_map && share->base.keys);
+  return (! mi_is_any_key_active(share->state.key_map) && share->base.keys);
 }