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Patch changing how ALTER TABLE implementation handles table locking

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and invalidation in the most general case (non-temporary table and
not simple RENAME or ENABLE/DISABLE KEYS or partitioning command).

See comment for sql/sql_table.cc for more information.

These changes are prerequisite for 5.1 version of fix for bug #23667
"CREATE TABLE LIKE is not isolated from alteration by other connections"
This commit is contained in:
dlenev@mockturtle.local
2007-05-19 10:49:56 +04:00
parent e4a3189c4f
commit b0dfdc2b83
9 changed files with 399 additions and 173 deletions
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5
sql/mysql_priv.h
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@ -1032,8 +1032,11 @@ TABLE *table_cache_insert_placeholder(THD *thd, const char *key,
bool lock_table_name_if_not_cached(THD *thd, const char *db,
const char *table_name, TABLE **table);
TABLE *find_locked_table(THD *thd, const char *db,const char *table_name);
bool reopen_table(TABLE *table);
bool reopen_tables(THD *thd,bool get_locks,bool in_refresh);
bool close_data_tables(THD *thd,const char *db, const char *table_name);
void close_data_files_and_morph_locks(THD *thd, const char *db,
const char *table_name);
void close_handle_and_leave_table_as_lock(TABLE *table);
bool wait_for_tables(THD *thd);
bool table_is_used(TABLE *table, bool wait_for_name_lock);
TABLE *drop_locked_tables(THD *thd,const char *db, const char *table_name);