diff options
Diffstat (limited to 'storage/innobase/include/trx0undo.h')
| -rw-r--r-- | storage/innobase/include/trx0undo.h | 46 |
1 files changed, 40 insertions, 6 deletions
diff --git a/storage/innobase/include/trx0undo.h b/storage/innobase/include/trx0undo.h index df16c939070..50aa6d0ac09 100644 --- a/storage/innobase/include/trx0undo.h +++ b/storage/innobase/include/trx0undo.h @@ -1,6 +1,6 @@ /***************************************************************************** -Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software @@ -204,17 +204,51 @@ trx_undo_add_page( mtr_t* mtr); /*!< in: mtr which does not have a latch to any undo log page; the caller must have reserved the rollback segment mutex */ +/********************************************************************//** +Frees the last undo log page. +The caller must hold the rollback segment mutex. */ +UNIV_INTERN +void +trx_undo_free_last_page_func( +/*==========================*/ +#ifdef UNIV_DEBUG + const trx_t* trx, /*!< in: transaction */ +#endif /* UNIV_DEBUG */ + trx_undo_t* undo, /*!< in/out: undo log memory copy */ + mtr_t* mtr) /*!< in/out: mini-transaction which does not + have a latch to any undo log page or which + has allocated the undo log page */ + __attribute__((nonnull)); +#ifdef UNIV_DEBUG +# define trx_undo_free_last_page(trx,undo,mtr) \ + trx_undo_free_last_page_func(trx,undo,mtr) +#else /* UNIV_DEBUG */ +# define trx_undo_free_last_page(trx,undo,mtr) \ + trx_undo_free_last_page_func(undo,mtr) +#endif /* UNIV_DEBUG */ + /***********************************************************************//** Truncates an undo log from the end. This function is used during a rollback to free space from an undo log. */ UNIV_INTERN void -trx_undo_truncate_end( -/*==================*/ - trx_t* trx, /*!< in: transaction whose undo log it is */ - trx_undo_t* undo, /*!< in: undo log */ - undo_no_t limit); /*!< in: all undo records with undo number +trx_undo_truncate_end_func( +/*=======================*/ +#ifdef UNIV_DEBUG + const trx_t* trx, /*!< in: transaction whose undo log it is */ +#endif /* UNIV_DEBUG */ + trx_undo_t* undo, /*!< in/out: undo log */ + undo_no_t limit) /*!< in: all undo records with undo number >= this value should be truncated */ + __attribute__((nonnull)); +#ifdef UNIV_DEBUG +# define trx_undo_truncate_end(trx,undo,limit) \ + trx_undo_truncate_end_func(trx,undo,limit) +#else /* UNIV_DEBUG */ +# define trx_undo_truncate_end(trx,undo,limit) \ + trx_undo_truncate_end_func(undo,limit) +#endif /* UNIV_DEBUG */ + /***********************************************************************//** Truncates an undo log from the start. This function is used during a purge operation. */ |