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https://github.com/MariaDB/server.git
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113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
/*****************************************************************************
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Copyright (c) 2010, 2013, Oracle and/or its affiliates. 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.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/*******************************************************************//**
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@file include/srv0mon.ic
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Server monitoring system
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Created 1/20/2010 Jimmy Yang
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************************************************************************/
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/*************************************************************//**
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This function is used to calculate the maximum counter value
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since the start of monitor counter
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@return max counter value since start. */
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UNIV_INLINE
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mon_type_t
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srv_mon_calc_max_since_start(
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/*=========================*/
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monitor_id_t monitor) /*!< in: monitor id */
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{
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if (MONITOR_MAX_VALUE_START(monitor) == MAX_RESERVED) {
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/* MONITOR_MAX_VALUE_START has not yet been
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initialized, the max value since start is the
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max count in MONITOR_MAX_VALUE */
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MONITOR_MAX_VALUE_START(monitor) =
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MONITOR_MAX_VALUE(monitor);
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} else if (MONITOR_MAX_VALUE(monitor) != MAX_RESERVED
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&& (MONITOR_MAX_VALUE(monitor)
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+ MONITOR_VALUE_RESET(monitor)
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> MONITOR_MAX_VALUE_START(monitor))) {
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/* If the max value since reset (as specified
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in MONITOR_MAX_VALUE) plus the reset value is
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larger than MONITOR_MAX_VALUE_START, reset
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MONITOR_MAX_VALUE_START to this new max value */
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MONITOR_MAX_VALUE_START(monitor) =
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MONITOR_MAX_VALUE(monitor)
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+ MONITOR_VALUE_RESET(monitor);
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}
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return(MONITOR_MAX_VALUE_START(monitor));
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}
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/*************************************************************//**
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This function is used to calculate the minimum counter value
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since the start of monitor counter
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@return min counter value since start. */
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UNIV_INLINE
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mon_type_t
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srv_mon_calc_min_since_start(
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/*=========================*/
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monitor_id_t monitor) /*!< in: monitor id */
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{
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if (MONITOR_MIN_VALUE_START(monitor) == MIN_RESERVED) {
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/* MONITOR_MIN_VALUE_START has not yet been
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initialized, the min value since start is the
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min count in MONITOR_MIN_VALUE */
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MONITOR_MIN_VALUE_START(monitor) =
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MONITOR_MIN_VALUE(monitor);
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} else if (MONITOR_MIN_VALUE(monitor) != MIN_RESERVED
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&& (MONITOR_MIN_VALUE(monitor)
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+ MONITOR_VALUE_RESET(monitor)
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< MONITOR_MIN_VALUE_START(monitor))) {
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/* If the min value since reset (as specified
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in MONITOR_MIN_VALUE) plus the reset value is
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less than MONITOR_MIN_VALUE_START, reset
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MONITOR_MIN_VALUE_START to this new min value */
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MONITOR_MIN_VALUE_START(monitor) =
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MONITOR_MIN_VALUE(monitor)
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+ MONITOR_VALUE_RESET(monitor);
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}
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return(MONITOR_MIN_VALUE_START(monitor));
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}
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/*************************************************************//**
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This function resets all values of a monitor counter */
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UNIV_INLINE
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void
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srv_mon_reset_all(
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/*==============*/
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monitor_id_t monitor) /*!< in: monitor id */
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{
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/* Do not reset all counter values if monitor is still on. */
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if (MONITOR_IS_ON(monitor)) {
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fprintf(stderr, "InnoDB: Cannot reset all values for"
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" monitor counter %s while it is on. Please"
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" turn it off and retry.\n",
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srv_mon_get_name(monitor));
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} else {
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MONITOR_RESET_ALL(monitor);
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}
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}
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