diff options
Diffstat (limited to 'innobase/trx/trx0undo.c')
| -rw-r--r-- | innobase/trx/trx0undo.c | 105 |
1 files changed, 64 insertions, 41 deletions
diff --git a/innobase/trx/trx0undo.c b/innobase/trx/trx0undo.c index 251cd355897..997f25a66d8 100644 --- a/innobase/trx/trx0undo.c +++ b/innobase/trx/trx0undo.c @@ -374,27 +374,32 @@ trx_undo_page_init( /******************************************************************* Creates a new undo log segment in file. */ static -page_t* +ulint trx_undo_seg_create( /*================*/ - /* out: segment header page x-latched, NULL - if no space left */ + /* out: DB_SUCCESS if page creation OK + possible error codes are: + DB_TOO_MANY_CONCURRENT_TRXS + DB_OUT_OF_FILE_SPACE */ trx_rseg_t* rseg __attribute__((unused)),/* in: rollback segment */ trx_rsegf_t* rseg_hdr,/* in: rollback segment header, page x-latched */ ulint type, /* in: type of the segment: TRX_UNDO_INSERT or TRX_UNDO_UPDATE */ ulint* id, /* out: slot index within rseg header */ + page_t** undo_page, + /* out: segment header page x-latched, NULL + if there was an error */ mtr_t* mtr) /* in: mtr */ { ulint slot_no; ulint space; - page_t* undo_page; trx_upagef_t* page_hdr; trx_usegf_t* seg_hdr; ulint n_reserved; ibool success; - + ulint err = DB_SUCCESS; + ut_ad(mtr && id && rseg_hdr); #ifdef UNIV_SYNC_DEBUG ut_ad(mutex_own(&(rseg->mutex))); @@ -411,7 +416,7 @@ trx_undo_seg_create( "InnoDB: Warning: cannot find a free slot for an undo log. Do you have too\n" "InnoDB: many active transactions running concurrently?\n"); - return(NULL); + return(DB_TOO_MANY_CONCURRENT_TRXS); } space = buf_frame_get_space_id(rseg_hdr); @@ -420,29 +425,29 @@ trx_undo_seg_create( mtr); if (!success) { - return(NULL); + return(DB_OUT_OF_FILE_SPACE); } /* Allocate a new file segment for the undo log */ - undo_page = fseg_create_general(space, 0, + *undo_page = fseg_create_general(space, 0, TRX_UNDO_SEG_HDR + TRX_UNDO_FSEG_HEADER, TRUE, mtr); fil_space_release_free_extents(space, n_reserved); - if (undo_page == NULL) { + if (*undo_page == NULL) { /* No space left */ - return(NULL); + return(DB_OUT_OF_FILE_SPACE); } #ifdef UNIV_SYNC_DEBUG - buf_page_dbg_add_level(undo_page, SYNC_TRX_UNDO_PAGE); + buf_page_dbg_add_level(*undo_page, SYNC_TRX_UNDO_PAGE); #endif /* UNIV_SYNC_DEBUG */ - page_hdr = undo_page + TRX_UNDO_PAGE_HDR; - seg_hdr = undo_page + TRX_UNDO_SEG_HDR; + page_hdr = *undo_page + TRX_UNDO_PAGE_HDR; + seg_hdr = *undo_page + TRX_UNDO_SEG_HDR; - trx_undo_page_init(undo_page, type, mtr); + trx_undo_page_init(*undo_page, type, mtr); mlog_write_ulint(page_hdr + TRX_UNDO_PAGE_FREE, TRX_UNDO_SEG_HDR + TRX_UNDO_SEG_HDR_SIZE, @@ -456,10 +461,11 @@ trx_undo_seg_create( page_hdr + TRX_UNDO_PAGE_NODE, mtr); trx_rsegf_set_nth_undo(rseg_hdr, slot_no, - buf_frame_get_page_no(undo_page), mtr); + buf_frame_get_page_no(*undo_page), mtr); + *id = slot_no; - return(undo_page); + return(err); } /************************************************************************** @@ -1400,6 +1406,11 @@ trx_undo_mem_create( undo = mem_alloc(sizeof(trx_undo_t)); + if (undo == NULL) { + + return NULL; + } + undo->id = id; undo->type = type; undo->state = TRX_UNDO_ACTIVE; @@ -1479,11 +1490,15 @@ trx_undo_mem_free( /************************************************************************** Creates a new undo log. */ static -trx_undo_t* +ulint trx_undo_create( /*============*/ - /* out: undo log object, NULL if did not - succeed: out of space */ + /* out: DB_SUCCESS if successful in creating + the new undo lob object, possible error + codes are: + DB_TOO_MANY_CONCURRENT_TRXS + DB_OUT_OF_FILE_SPACE + DB_OUT_OF_MEMORY*/ trx_t* trx, /* in: transaction */ trx_rseg_t* rseg, /* in: rollback segment memory copy */ ulint type, /* in: type of the log: TRX_UNDO_INSERT or @@ -1491,36 +1506,39 @@ trx_undo_create( dulint trx_id, /* in: id of the trx for which the undo log is created */ XID* xid, /* in: X/Open transaction identification*/ + trx_undo_t** undo, /* out: the new undo log object, undefined + * if did not succeed */ mtr_t* mtr) /* in: mtr */ { trx_rsegf_t* rseg_header; ulint page_no; ulint offset; ulint id; - trx_undo_t* undo; page_t* undo_page; - + ulint err; + #ifdef UNIV_SYNC_DEBUG ut_ad(mutex_own(&(rseg->mutex))); #endif /* UNIV_SYNC_DEBUG */ if (rseg->curr_size == rseg->max_size) { - return(NULL); + return(DB_OUT_OF_FILE_SPACE); } rseg->curr_size++; rseg_header = trx_rsegf_get(rseg->space, rseg->page_no, mtr); - undo_page = trx_undo_seg_create(rseg, rseg_header, type, &id, mtr); + err = trx_undo_seg_create(rseg, rseg_header, type, &id, + &undo_page, mtr); - if (undo_page == NULL) { + if (err != DB_SUCCESS) { /* Did not succeed */ rseg->curr_size--; - return(NULL); + return(err); } page_no = buf_frame_get_page_no(undo_page); @@ -1532,9 +1550,14 @@ trx_undo_create( undo_page + offset, mtr); } - undo = trx_undo_mem_create(rseg, id, type, trx_id, xid, + *undo = trx_undo_mem_create(rseg, id, type, trx_id, xid, page_no, offset); - return(undo); + if (*undo == NULL) { + + err = DB_OUT_OF_MEMORY; + } + + return(err); } /*================ UNDO LOG ASSIGNMENT AND CLEANUP =====================*/ @@ -1653,17 +1676,20 @@ trx_undo_mark_as_dict_operation( Assigns an undo log for a transaction. A new undo log is created or a cached undo log reused. */ -trx_undo_t* +ulint trx_undo_assign_undo( /*=================*/ - /* out: the undo log, NULL if did not succeed: out of - space */ - trx_t* trx, /* in: transaction */ - ulint type) /* in: TRX_UNDO_INSERT or TRX_UNDO_UPDATE */ + /* out: DB_SUCCESS if undo log assign + successful, possible error codes are: + DD_TOO_MANY_CONCURRENT_TRXS + DB_OUT_OF_FILE_SPACE DB_OUT_OF_MEMORY*/ + trx_t* trx, /* in: transaction */ + ulint type) /* in: TRX_UNDO_INSERT or TRX_UNDO_UPDATE */ { trx_rseg_t* rseg; trx_undo_t* undo; mtr_t mtr; + ulint err = DB_SUCCESS; ut_ad(trx); ut_ad(trx->rseg); @@ -1684,15 +1710,11 @@ trx_undo_assign_undo( undo = trx_undo_reuse_cached(trx, rseg, type, trx->id, &trx->xid, &mtr); if (undo == NULL) { - undo = trx_undo_create(trx, rseg, type, trx->id, &trx->xid, - &mtr); - if (undo == NULL) { - /* Did not succeed */ + err = trx_undo_create(trx, rseg, type, trx->id, &trx->xid, + &undo, &mtr); + if (err != DB_SUCCESS) { - mutex_exit(&(rseg->mutex)); - mtr_commit(&mtr); - - return(NULL); + goto func_exit; } } @@ -1710,10 +1732,11 @@ trx_undo_assign_undo( trx_undo_mark_as_dict_operation(trx, undo, &mtr); } +func_exit: mutex_exit(&(rseg->mutex)); mtr_commit(&mtr); - return(undo); + return err; } /********************************************************************** |