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Diffstat (limited to 'storage/innobase/include/read0read.ic')
-rw-r--r-- | storage/innobase/include/read0read.ic | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/storage/innobase/include/read0read.ic b/storage/innobase/include/read0read.ic deleted file mode 100644 index 3aded1ca07c..00000000000 --- a/storage/innobase/include/read0read.ic +++ /dev/null @@ -1,81 +0,0 @@ -/****************************************************** -Cursor read - -(c) 1997 Innobase Oy - -Created 2/16/1997 Heikki Tuuri -*******************************************************/ - -/************************************************************************* -Gets the nth trx id in a read view. */ -UNIV_INLINE -dulint -read_view_get_nth_trx_id( -/*=====================*/ - /* out: trx id */ - read_view_t* view, /* in: read view */ - ulint n) /* in: position */ -{ - ut_ad(n < view->n_trx_ids); - - return(*(view->trx_ids + n)); -} - -/************************************************************************* -Sets the nth trx id in a read view. */ -UNIV_INLINE -void -read_view_set_nth_trx_id( -/*=====================*/ - read_view_t* view, /* in: read view */ - ulint n, /* in: position */ - dulint trx_id) /* in: trx id to set */ -{ - ut_ad(n < view->n_trx_ids); - - *(view->trx_ids + n) = trx_id; -} - -/************************************************************************* -Checks if a read view sees the specified transaction. */ -UNIV_INLINE -ibool -read_view_sees_trx_id( -/*==================*/ - /* out: TRUE if sees */ - read_view_t* view, /* in: read view */ - dulint trx_id) /* in: trx id */ -{ - ulint n_ids; - int cmp; - ulint i; - - if (ut_dulint_cmp(trx_id, view->up_limit_id) < 0) { - - return(TRUE); - } - - if (ut_dulint_cmp(trx_id, view->low_limit_id) >= 0) { - - return(FALSE); - } - - /* We go through the trx ids in the array smallest first: this order - may save CPU time, because if there was a very long running - transaction in the trx id array, its trx id is looked at first, and - the first two comparisons may well decide the visibility of trx_id. */ - - n_ids = view->n_trx_ids; - - for (i = 0; i < n_ids; i++) { - - cmp = ut_dulint_cmp( - trx_id, - read_view_get_nth_trx_id(view, n_ids - i - 1)); - if (cmp <= 0) { - return(cmp < 0); - } - } - - return(TRUE); -} |