CHECKSUM TABLE now allows concurrent inserts

myisam/mi_check.c:
  info->s->state.checksum moved to info->state->checksum
myisam/mi_delete.c:
  info->s->state.checksum moved to info->state->checksum
myisam/mi_delete_all.c:
  info->s->state.checksum moved to info->state->checksum
myisam/mi_open.c:
  info->s->state.checksum moved to info->state->checksum
myisam/mi_update.c:
  info->s->state.checksum moved to info->state->checksum
myisam/mi_write.c:
  info->s->state.checksum moved to info->state->checksum
myisam/myisamchk.c:
  info->s->state.checksum moved to info->state->checksum
myisam/myisamdef.h:
  info->s->state.checksum moved to info->state->checksum
myisam/myisampack.c:
  info->s->state.checksum moved to info->state->checksum
mysql-test/r/system_mysql_db.result:
  result fixed
sql/ha_myisam.cc:
  info->s->state.checksum moved to info->state->checksum

myisam/mi_check.c

@@ -1092,7 +1092,7 @@ int chk_data_link(MI_CHECK *param, MI_INFO *info,int extend)
 			 "Keypointers and record positions doesn't match");
     error=1;
   }
-  else if (param->glob_crc != info->s->state.checksum &&
+  else if (param->glob_crc != info->state->checksum &&
 	   (info->s->options &
 	    (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD)))
   {
@@ -1388,7 +1388,7 @@ int mi_repair(MI_CHECK *param, register MI_INFO *info,
     info->state->data_file_length=sort_param.max_pos;
   }
   if (param->testflag & T_CALC_CHECKSUM)
-    share->state.checksum=param->glob_crc;
+    info->state->checksum=param->glob_crc;
 
   if (!(param->testflag & T_SILENT))
   {
@@ -2156,7 +2156,7 @@ int mi_repair_by_sort(MI_CHECK *param, register MI_INFO *info,
 			       my_errno);
   }
   if (param->testflag & T_CALC_CHECKSUM)
-    share->state.checksum=param->glob_crc;
+    info->state->checksum=param->glob_crc;
 
   if (my_chsize(share->kfile,info->state->key_file_length,0,MYF(0)))
     mi_check_print_warning(param,
@@ -2577,7 +2577,7 @@ int mi_repair_parallel(MI_CHECK *param, register MI_INFO *info,
 			       my_errno);
   }
   if (param->testflag & T_CALC_CHECKSUM)
-    share->state.checksum=param->glob_crc;
+    info->state->checksum=param->glob_crc;
 
   if (my_chsize(share->kfile,info->state->key_file_length,0,MYF(0)))
     mi_check_print_warning(param,
@@ -3808,7 +3808,7 @@ int recreate_table(MI_CHECK *param, MI_INFO **org_info, char *filename)
     (*org_info)->s->state.create_time=share.state.create_time;
   (*org_info)->s->state.unique=(*org_info)->this_unique=
     share.state.unique;
-  (*org_info)->s->state.checksum=share.state.checksum;
+  (*org_info)->state->checksum=info.state->checksum;
   (*org_info)->state->del=info.state->del;
   (*org_info)->s->state.dellink=share.state.dellink;
   (*org_info)->state->empty=info.state->empty;

myisam/mi_delete.c

@@ -93,7 +93,7 @@ int mi_delete(MI_INFO *info,const byte *record)
 
   if ((*share->delete_record)(info))
     goto err;				/* Remove record from database */
-  info->s->state.checksum-=info->checksum;
+  info->state->checksum-=info->checksum;
 
   info->update= HA_STATE_CHANGED+HA_STATE_DELETED+HA_STATE_ROW_CHANGED;
   info->state->records--;

myisam/mi_delete_all.c

@@ -41,7 +41,7 @@ int mi_delete_all_rows(MI_INFO *info)
   info->state->key_file_length=share->base.keystart;
   info->state->data_file_length=0;
   info->state->empty=info->state->key_empty=0;
-  state->checksum=0;
+  info->state->checksum=0;
 
   for (i=share->base.max_key_block_length/MI_MIN_KEY_BLOCK_LENGTH ; i-- ; )
     state->key_del[i]= HA_OFFSET_ERROR;

myisam/mi_open.c

@@ -822,7 +822,7 @@ uint mi_state_info_write(File file, MI_STATE_INFO *state, uint pWrite)
   mi_sizestore(ptr,state->state.empty);		ptr +=8;
   mi_sizestore(ptr,state->state.key_empty);	ptr +=8;
   mi_int8store(ptr,state->auto_increment);	ptr +=8;
-  mi_int8store(ptr,(ulonglong) state->checksum);ptr +=8;
+  mi_int8store(ptr,(ulonglong) state->state.checksum);ptr +=8;
   mi_int4store(ptr,state->process);		ptr +=4;
   mi_int4store(ptr,state->unique);		ptr +=4;
   mi_int4store(ptr,state->status);		ptr +=4;
@@ -884,7 +884,7 @@ char *mi_state_info_read(uchar *ptr, MI_STATE_INFO *state)
   state->state.empty	= mi_sizekorr(ptr);	ptr +=8;
   state->state.key_empty= mi_sizekorr(ptr);	ptr +=8;
   state->auto_increment=mi_uint8korr(ptr);	ptr +=8;
-  state->checksum=(ha_checksum) mi_uint8korr(ptr);	ptr +=8;
+  state->state.checksum=(ha_checksum) mi_uint8korr(ptr);	ptr +=8;
   state->process= mi_uint4korr(ptr);		ptr +=4;
   state->unique = mi_uint4korr(ptr);		ptr +=4;
   state->status = mi_uint4korr(ptr);		ptr +=4;

myisam/mi_update.c

@@ -162,7 +162,7 @@ int mi_update(register MI_INFO *info, const byte *oldrec, byte *newrec)
   if (auto_key_changed)
     update_auto_increment(info,newrec);
   if (share->calc_checksum)
-    share->state.checksum+=(info->checksum - old_checksum);
+    info->state->checksum+=(info->checksum - old_checksum);
 
   info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | HA_STATE_AKTIV |
 		 key_changed);

myisam/mi_write.c

@@ -142,7 +142,7 @@ int mi_write(MI_INFO *info, byte *record)
   {
     if ((*share->write_record)(info,record))
       goto err;
-    share->state.checksum+=info->checksum;
+    info->state->checksum+=info->checksum;
   }
   if (share->base.auto_key)
     update_auto_increment(info,record);

myisam/myisamchk.c

@@ -1261,7 +1261,7 @@ static void descript(MI_CHECK *param, register MI_INFO *info, my_string name)
 	     share->base.raid_chunksize);
     }
     if (share->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD))
-      printf("Checksum:  %23s\n",llstr(info->s->state.checksum,llbuff));
+      printf("Checksum:  %23s\n",llstr(info->state->checksum,llbuff));
 ;
     if (share->options & HA_OPTION_DELAY_KEY_WRITE)
       printf("Keys are only flushed at close\n");
@@ -1576,7 +1576,7 @@ static int mi_sort_records(MI_CHECK *param,
   old_record_count=info->state->records;
   info->state->records=0;
   if (sort_info.new_data_file_type != COMPRESSED_RECORD)
-    share->state.checksum=0;
+    info->state->checksum=0;
 
   if (sort_record_index(&sort_param,info,keyinfo,share->state.key_root[sort_key],
 			temp_buff, sort_key,new_file,update_index) ||

myisam/myisamdef.h

@@ -38,6 +38,7 @@ typedef struct st_mi_status_info
   my_off_t key_empty;			/* lost space in indexfile */
   my_off_t key_file_length;
   my_off_t data_file_length;
+  ha_checksum checksum;
 } MI_STATUS_INFO;
 
 typedef struct st_mi_state_info
@@ -75,7 +76,6 @@ typedef struct st_mi_state_info
   ulong sec_index_changed;		/* Updated when new sec_index */
   ulong sec_index_used;			/* which extra index are in use */
   ulonglong key_map;			/* Which keys are in use */
-  ha_checksum checksum;
   ulong version;			/* timestamp of create */
   time_t create_time;			/* Time when created database */
   time_t recover_time;			/* Time for last recover */

myisam/myisampack.c

@@ -2965,7 +2965,7 @@ static int save_state(MI_INFO *isam_file,PACK_MRG_INFO *mrg,my_off_t new_length,
     share->state.key_root[key]= HA_OFFSET_ERROR;
   for (key=0 ; key < share->state.header.max_block_size ; key++)
     share->state.key_del[key]= HA_OFFSET_ERROR;
-  share->state.checksum=crc;		/* Save crc here */
+  isam_file->state->checksum=crc;       /* Save crc here */
   share->changed=1;			/* Force write of header */
   share->state.open_count=0;
   share->global_changed=0;
@@ -3001,7 +3001,7 @@ static int save_state_mrg(File file,PACK_MRG_INFO *mrg,my_off_t new_length,
   state.dellink= HA_OFFSET_ERROR;
   state.version=(ulong) time((time_t*) 0);
   mi_clear_all_keys_active(state.key_map);
-  state.checksum=crc;
+  state.state.checksum=crc;
   if (isam_file->s->base.keys)
     isamchk_neaded=1;
   state.changed=STATE_CHANGED | STATE_NOT_ANALYZED; /* Force check of table */

mysql-test/r/system_mysql_db.result

@@ -73,7 +73,7 @@ Table	Create Table
 user	CREATE TABLE `user` (
   `Host` char(60) collate utf8_bin NOT NULL default '',
   `User` char(16) collate utf8_bin NOT NULL default '',
-  `Password` char(41) collate utf8_bin NOT NULL default '',
+  `Password` binary(41) NOT NULL default '',
   `Select_priv` enum('N','Y') character set utf8 NOT NULL default 'N',
   `Insert_priv` enum('N','Y') character set utf8 NOT NULL default 'N',
   `Update_priv` enum('N','Y') character set utf8 NOT NULL default 'N',

sql/ha_myisam.cc

@@ -1703,6 +1703,6 @@ int ha_myisam::ft_read(byte * buf)
 
 uint ha_myisam::checksum() const
 {
-  return (uint)file->s->state.checksum;
+  return (uint)file->state->checksum;
 }
 

sql/sql_table.cc

@@ -4074,7 +4074,7 @@ bool mysql_checksum_table(THD *thd, TABLE_LIST *tables, HA_CHECK_OPT *check_opt)
 
     strxmov(table_name, table->db ,".", table->table_name, NullS);
 
-    t= table->table= open_ltable(thd, table, TL_READ_NO_INSERT);
+    t= table->table= open_ltable(thd, table, TL_READ);
     thd->clear_error();			// these errors shouldn't get client
 
     protocol->prepare_for_resend();