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Fixed mutexes lock order in maria_close(): LOCK_trn_list -> MARIA_SHARE::intern_lock (then will be WL to revert the order).

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(BUG#40981 Maria: deadlock between checkpoint and maria_close() when freeing state info)

storage/maria/ma_checkpoint.c:
  The argument added to the function to use it in maria_close().
storage/maria/ma_close.c:
  Locking/unlocking MARIA_SHARE::intern_lock added to use correct order of the mutexes taking.
storage/maria/ma_state.c:
  Removed assert becase now we have externally locked mutex in maria_close().
  The argument added to the _ma_remove_not_visible_states_with_lock() to use it in maria_close().
  _ma_remove_not_visible_states_with_lock() fixed tio be usable from maria_chk where transaction manager is not initialized.
storage/maria/ma_state.h:
  The argument added to the function to use it in maria_close().
storage/maria/maria_def.h:
  Fixed comment to the variable.
storage/maria/trnman.c:
  The debugging assert added.
  New function to detect transaction manager initialization added (maria_chk do not initialize it).
storage/maria/trnman_public.h:
  New function to detect transaction manager initialization added (maria_chk do not initialize it).
This commit is contained in:
unknown 2008-12-08 22:09:59 +02:00
commit c9b0c5a15c
7 changed files with 49 additions and 18 deletions
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storage/maria/trnman_public.h
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@ -69,5 +69,6 @@ my_bool trnman_exists_active_transactions(TrID min_id, TrID max_id,
#define transid_korr(P) uint6korr(P)
void trnman_lock();
void trnman_unlock();
my_bool trman_is_inited();
C_MODE_END
#endif