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Diffstat (limited to 'storage/innobase/include/trx0rseg.h')
| -rw-r--r-- | storage/innobase/include/trx0rseg.h | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/storage/innobase/include/trx0rseg.h b/storage/innobase/include/trx0rseg.h deleted file mode 100644 index 46ba010bd1d..00000000000 --- a/storage/innobase/include/trx0rseg.h +++ /dev/null @@ -1,193 +0,0 @@ -/****************************************************** -Rollback segment - -(c) 1996 Innobase Oy - -Created 3/26/1996 Heikki Tuuri -*******************************************************/ - -#ifndef trx0rseg_h -#define trx0rseg_h - -#include "univ.i" -#include "trx0types.h" -#include "trx0sys.h" - -/********************************************************************** -Gets a rollback segment header. */ -UNIV_INLINE -trx_rsegf_t* -trx_rsegf_get( -/*==========*/ - /* out: rollback segment header, page - x-latched */ - ulint space, /* in: space where placed */ - ulint page_no, /* in: page number of the header */ - mtr_t* mtr); /* in: mtr */ -/********************************************************************** -Gets a newly created rollback segment header. */ -UNIV_INLINE -trx_rsegf_t* -trx_rsegf_get_new( -/*==============*/ - /* out: rollback segment header, page - x-latched */ - ulint space, /* in: space where placed */ - ulint page_no, /* in: page number of the header */ - mtr_t* mtr); /* in: mtr */ -/******************************************************************* -Gets the file page number of the nth undo log slot. */ -UNIV_INLINE -ulint -trx_rsegf_get_nth_undo( -/*===================*/ - /* out: page number of the undo log segment */ - trx_rsegf_t* rsegf, /* in: rollback segment header */ - ulint n, /* in: index of slot */ - mtr_t* mtr); /* in: mtr */ -/******************************************************************* -Sets the file page number of the nth undo log slot. */ -UNIV_INLINE -void -trx_rsegf_set_nth_undo( -/*===================*/ - trx_rsegf_t* rsegf, /* in: rollback segment header */ - ulint n, /* in: index of slot */ - ulint page_no,/* in: page number of the undo log segment */ - mtr_t* mtr); /* in: mtr */ -/******************************************************************** -Looks for a free slot for an undo log segment. */ -UNIV_INLINE -ulint -trx_rsegf_undo_find_free( -/*=====================*/ - /* out: slot index or ULINT_UNDEFINED if not - found */ - trx_rsegf_t* rsegf, /* in: rollback segment header */ - mtr_t* mtr); /* in: mtr */ -/********************************************************************** -Looks for a rollback segment, based on the rollback segment id. */ - -trx_rseg_t* -trx_rseg_get_on_id( -/*===============*/ - /* out: rollback segment */ - ulint id); /* in: rollback segment id */ -/******************************************************************** -Creates a rollback segment header. This function is called only when -a new rollback segment is created in the database. */ - -ulint -trx_rseg_header_create( -/*===================*/ - /* out: page number of the created segment, - FIL_NULL if fail */ - ulint space, /* in: space id */ - ulint max_size, /* in: max size in pages */ - ulint* slot_no, /* out: rseg id == slot number in trx sys */ - mtr_t* mtr); /* in: mtr */ -/************************************************************************* -Creates the memory copies for rollback segments and initializes the -rseg list and array in trx_sys at a database startup. */ - -void -trx_rseg_list_and_array_init( -/*=========================*/ - trx_sysf_t* sys_header, /* in: trx system header */ - mtr_t* mtr); /* in: mtr */ -/******************************************************************** -Creates a new rollback segment to the database. */ - -trx_rseg_t* -trx_rseg_create( -/*============*/ - /* out: the created segment object, NULL if - fail */ - ulint space, /* in: space id */ - ulint max_size, /* in: max size in pages */ - ulint* id, /* out: rseg id */ - mtr_t* mtr); /* in: mtr */ - - -/* Number of undo log slots in a rollback segment file copy */ -#define TRX_RSEG_N_SLOTS 1024 - -/* Maximum number of transactions supported by a single rollback segment */ -#define TRX_RSEG_MAX_N_TRXS (TRX_RSEG_N_SLOTS / 2) - -/* The rollback segment memory object */ -struct trx_rseg_struct{ - /*--------------------------------------------------------*/ - ulint id; /* rollback segment id == the index of - its slot in the trx system file copy */ - mutex_t mutex; /* mutex protecting the fields in this - struct except id; NOTE that the latching - order must always be kernel mutex -> - rseg mutex */ - ulint space; /* space where the rollback segment is - header is placed */ - ulint page_no;/* page number of the rollback segment - header */ - ulint max_size;/* maximum allowed size in pages */ - ulint curr_size;/* current size in pages */ - /*--------------------------------------------------------*/ - /* Fields for update undo logs */ - UT_LIST_BASE_NODE_T(trx_undo_t) update_undo_list; - /* List of update undo logs */ - UT_LIST_BASE_NODE_T(trx_undo_t) update_undo_cached; - /* List of update undo log segments - cached for fast reuse */ - /*--------------------------------------------------------*/ - /* Fields for insert undo logs */ - UT_LIST_BASE_NODE_T(trx_undo_t) insert_undo_list; - /* List of insert undo logs */ - UT_LIST_BASE_NODE_T(trx_undo_t) insert_undo_cached; - /* List of insert undo log segments - cached for fast reuse */ - /*--------------------------------------------------------*/ - ulint last_page_no; /* Page number of the last not yet - purged log header in the history list; - FIL_NULL if all list purged */ - ulint last_offset; /* Byte offset of the last not yet - purged log header */ - dulint last_trx_no; /* Transaction number of the last not - yet purged log */ - ibool last_del_marks; /* TRUE if the last not yet purged log - needs purging */ - /*--------------------------------------------------------*/ - UT_LIST_NODE_T(trx_rseg_t) rseg_list; - /* the list of the rollback segment - memory objects */ -}; - -/* Undo log segment slot in a rollback segment header */ -/*-------------------------------------------------------------*/ -#define TRX_RSEG_SLOT_PAGE_NO 0 /* Page number of the header page of - an undo log segment */ -/*-------------------------------------------------------------*/ -/* Slot size */ -#define TRX_RSEG_SLOT_SIZE 4 - -/* The offset of the rollback segment header on its page */ -#define TRX_RSEG FSEG_PAGE_DATA - -/* Transaction rollback segment header */ -/*-------------------------------------------------------------*/ -#define TRX_RSEG_MAX_SIZE 0 /* Maximum allowed size for rollback - segment in pages */ -#define TRX_RSEG_HISTORY_SIZE 4 /* Number of file pages occupied - by the logs in the history list */ -#define TRX_RSEG_HISTORY 8 /* The update undo logs for committed - transactions */ -#define TRX_RSEG_FSEG_HEADER (8 + FLST_BASE_NODE_SIZE) - /* Header for the file segment where - this page is placed */ -#define TRX_RSEG_UNDO_SLOTS (8 + FLST_BASE_NODE_SIZE + FSEG_HEADER_SIZE) - /* Undo log segment slots */ -/*-------------------------------------------------------------*/ - -#ifndef UNIV_NONINL -#include "trx0rseg.ic" -#endif - -#endif |