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Docs/manual.texi: Added Innobase documentation configure.in: Incremented version include/my_base.h: Added option for Innobase myisam/mi_check.c: cleanup mysql-test/t/bdb.test: cleanup mysql-test/t/innobase.test: Extended with new tests from bdb.test mysql-test/t/merge.test: Added test of SHOW create mysys/my_init.c: Fix for UNIXWARE 7 scripts/mysql_install_db.sh: Always write how to start mysqld scripts/safe_mysqld.sh: Fixed type sql/ha_innobase.cc: Update to new version sql/ha_innobase.h: Update to new version sql/handler.h: Added 'update_table_comment()' and 'append_create_info()' sql/sql_delete.cc: Fixes for Innobase sql/sql_select.cc: Fixes for Innobase sql/sql_show.cc: Append create information (for MERGE tables) sql/sql_update.cc: Fixes for Innobase
95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
/******************************************************
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Row versions
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(c) 1997 Innobase Oy
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Created 2/6/1997 Heikki Tuuri
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*******************************************************/
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#ifndef row0vers_h
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#define row0vers_h
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#include "univ.i"
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#include "data0data.h"
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#include "dict0types.h"
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#include "trx0types.h"
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#include "que0types.h"
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#include "rem0types.h"
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#include "mtr0mtr.h"
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#include "read0types.h"
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/*********************************************************************
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Finds out if an active transaction has inserted or modified a secondary
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index record. NOTE: the kernel mutex is temporarily released in this
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function! */
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trx_t*
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row_vers_impl_x_locked_off_kernel(
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/*==============================*/
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/* out: NULL if committed, else the active
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transaction; NOTE that the kernel mutex is
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temporarily released! */
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rec_t* rec, /* in: record in a secondary index */
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dict_index_t* index); /* in: the secondary index */
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/*********************************************************************
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Finds out if we must preserve a delete marked earlier version of a clustered
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index record, because it is >= the purge view. */
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ibool
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row_vers_must_preserve_del_marked(
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/*==============================*/
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/* out: TRUE if earlier version should be preserved */
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dulint trx_id, /* in: transaction id in the version */
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mtr_t* mtr); /* in: mtr holding the latch on the clustered index
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record; it will also hold the latch on purge_view */
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/*********************************************************************
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Finds out if a version of the record, where the version >= the current
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purge view, should have ientry as its secondary index entry. We check
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if there is any not delete marked version of the record where the trx
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id >= purge view, and the secondary index entry == ientry; exactly in
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this case we return TRUE. */
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ibool
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row_vers_old_has_index_entry(
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/*=========================*/
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/* out: TRUE if earlier version should have */
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ibool also_curr,/* in: TRUE if also rec is included in the
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versions to search; otherwise only versions
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prior to it are searched */
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rec_t* rec, /* in: record in the clustered index; the
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caller must have a latch on the page */
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mtr_t* mtr, /* in: mtr holding the latch on rec; it will
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also hold the latch on purge_view */
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dict_index_t* index, /* in: the secondary index */
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dtuple_t* ientry); /* in: the secondary index entry */
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/*********************************************************************
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Constructs the version of a clustered index record which a consistent
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read should see. We assume that the trx id stored in rec is such that
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the consistent read should not see rec in its present version. */
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ulint
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row_vers_build_for_consistent_read(
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/*===============================*/
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/* out: DB_SUCCESS or DB_MISSING_HISTORY */
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rec_t* rec, /* in: record in a clustered index; the
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caller must have a latch on the page; this
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latch locks the top of the stack of versions
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of this records */
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mtr_t* mtr, /* in: mtr holding the latch on rec; it will
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also hold the latch on purge_view */
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dict_index_t* index, /* in: the clustered index */
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read_view_t* view, /* in: the consistent read view */
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mem_heap_t* in_heap,/* in: memory heap from which the memory for
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old_vers is allocated; memory for possible
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intermediate versions is allocated and freed
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locally within the function */
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rec_t** old_vers);/* out, own: old version, or NULL if the
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record does not exist in the view, that is,
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it was freshly inserted afterwards */
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#ifndef UNIV_NONINL
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#include "row0vers.ic"
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#endif
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#endif
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