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1601bdc38a
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r5092 | marko | 2009-05-25 09:54:17 +0300 (Mon, 25 May 2009) | 1 line
branches/zip: Adjust some function comments after r5091.
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r5100 | marko | 2009-05-25 12:09:45 +0300 (Mon, 25 May 2009) | 1 line
branches/zip: Split some long lines that were introduced in r5091.
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r5101 | marko | 2009-05-25 12:42:47 +0300 (Mon, 25 May 2009) | 2 lines
branches/zip: Introduce the macro TEMP_INDEX_PREFIX_STR.
This is to avoid triggering an error in Doxygen.
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r5102 | marko | 2009-05-25 13:47:14 +0300 (Mon, 25 May 2009) | 1 line
branches/zip: Add missing file comments.
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r5103 | marko | 2009-05-25 13:52:29 +0300 (Mon, 25 May 2009) | 10 lines
branches/zip: Add @file comments, and convert decorative
/*********************************
comments to Doxygen /** style like this:
/*****************************//**
This conversion was performed by the following command:
perl -i -e 'while(<ARGV>){if (m|^/\*{30}\**$|) {
s|\*{4}$|//**| if ++$com>1; $_ .= "\@file $ARGV\n" if $com==2}
print; if(eof){$.=0;undef $com}}' */*[ch] include/univ.i
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r5104 | marko | 2009-05-25 14:39:07 +0300 (Mon, 25 May 2009) | 2 lines
branches/zip: Revert ut0auxconf_* to r5102,
that is, make Doxygen ignore these test programs.
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r5105 | marko | 2009-05-25 14:52:20 +0300 (Mon, 25 May 2009) | 2 lines
branches/zip: Enclose some #error checks inside #ifndef DOXYGEN
to prevent bogus Doxygen errors.
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r5106 | marko | 2009-05-25 16:09:24 +0300 (Mon, 25 May 2009) | 2 lines
branches/zip: Add some Doxygen comments, mainly to structs, typedefs,
macros and global variables. Many more to go.
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r5108 | marko | 2009-05-26 00:32:35 +0300 (Tue, 26 May 2009) | 2 lines
branches/zip: lexyy.c: Remove the inadvertently added @file directive.
There is nothing for Doxygen to see in this file, move along.
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r5125 | marko | 2009-05-26 16:28:49 +0300 (Tue, 26 May 2009) | 3 lines
branches/zip: Add some Doxygen comments for many structs, typedefs,
#defines and global variables. Many are still missing.
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r5134 | marko | 2009-05-27 09:08:43 +0300 (Wed, 27 May 2009) | 1 line
branches/zip: Add some Doxygen @return comments.
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r5139 | marko | 2009-05-27 10:01:40 +0300 (Wed, 27 May 2009) | 1 line
branches/zip: Add Doxyfile.
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r5143 | marko | 2009-05-27 10:57:25 +0300 (Wed, 27 May 2009) | 3 lines
branches/zip: buf0buf.h, Doxyfile: Fix the Doxygen translation.
@defgroup is for source code modules, not for field groups.
Tell Doxygen to expand the UT_LIST declarations.
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/*****************************************************************************
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Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/read0read.ic
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Cursor read
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Created 2/16/1997 Heikki Tuuri
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*******************************************************/
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/*********************************************************************//**
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Gets the nth trx id in a read view.
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@return trx id */
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UNIV_INLINE
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trx_id_t
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read_view_get_nth_trx_id(
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/*=====================*/
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const read_view_t* view, /*!< in: read view */
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ulint n) /*!< in: position */
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{
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ut_ad(n < view->n_trx_ids);
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return(*(view->trx_ids + n));
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}
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/*********************************************************************//**
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Sets the nth trx id in a read view. */
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UNIV_INLINE
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void
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read_view_set_nth_trx_id(
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/*=====================*/
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read_view_t* view, /*!< in: read view */
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ulint n, /*!< in: position */
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trx_id_t trx_id) /*!< in: trx id to set */
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{
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ut_ad(n < view->n_trx_ids);
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*(view->trx_ids + n) = trx_id;
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}
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/*********************************************************************//**
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Checks if a read view sees the specified transaction.
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@return TRUE if sees */
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UNIV_INLINE
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ibool
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read_view_sees_trx_id(
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/*==================*/
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const read_view_t* view, /*!< in: read view */
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trx_id_t trx_id) /*!< in: trx id */
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{
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ulint n_ids;
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int cmp;
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ulint i;
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if (ut_dulint_cmp(trx_id, view->up_limit_id) < 0) {
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return(TRUE);
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}
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if (ut_dulint_cmp(trx_id, view->low_limit_id) >= 0) {
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return(FALSE);
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}
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/* We go through the trx ids in the array smallest first: this order
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may save CPU time, because if there was a very long running
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transaction in the trx id array, its trx id is looked at first, and
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the first two comparisons may well decide the visibility of trx_id. */
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n_ids = view->n_trx_ids;
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for (i = 0; i < n_ids; i++) {
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cmp = ut_dulint_cmp(
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trx_id,
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read_view_get_nth_trx_id(view, n_ids - i - 1));
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if (cmp <= 0) {
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return(cmp < 0);
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}
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}
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return(TRUE);
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}
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