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/*****************************************************************************
Copyright (c) 2010, 2013, Oracle and/or its affiliates. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/*******************************************************************//**
@file include/srv0mon.ic
Server monitoring system
Created 1/20/2010 Jimmy Yang
************************************************************************/
/*************************************************************//**
This function is used to calculate the maximum counter value
since the start of monitor counter
@return max counter value since start. */
UNIV_INLINE
mon_type_t
srv_mon_calc_max_since_start(
/*=========================*/
monitor_id_t monitor) /*!< in: monitor id */
{
if (MONITOR_MAX_VALUE_START(monitor) == MAX_RESERVED) {
/* MONITOR_MAX_VALUE_START has not yet been
initialized, the max value since start is the
max count in MONITOR_MAX_VALUE */
MONITOR_MAX_VALUE_START(monitor) =
MONITOR_MAX_VALUE(monitor);
} else if (MONITOR_MAX_VALUE(monitor) != MAX_RESERVED
&& (MONITOR_MAX_VALUE(monitor)
+ MONITOR_VALUE_RESET(monitor)
> MONITOR_MAX_VALUE_START(monitor))) {
/* If the max value since reset (as specified
in MONITOR_MAX_VALUE) plus the reset value is
larger than MONITOR_MAX_VALUE_START, reset
MONITOR_MAX_VALUE_START to this new max value */
MONITOR_MAX_VALUE_START(monitor) =
MONITOR_MAX_VALUE(monitor)
+ MONITOR_VALUE_RESET(monitor);
}
return(MONITOR_MAX_VALUE_START(monitor));
}
/*************************************************************//**
This function is used to calculate the minimum counter value
since the start of monitor counter
@return min counter value since start. */
UNIV_INLINE
mon_type_t
srv_mon_calc_min_since_start(
/*=========================*/
monitor_id_t monitor) /*!< in: monitor id */
{
if (MONITOR_MIN_VALUE_START(monitor) == MIN_RESERVED) {
/* MONITOR_MIN_VALUE_START has not yet been
initialized, the min value since start is the
min count in MONITOR_MIN_VALUE */
MONITOR_MIN_VALUE_START(monitor) =
MONITOR_MIN_VALUE(monitor);
} else if (MONITOR_MIN_VALUE(monitor) != MIN_RESERVED
&& (MONITOR_MIN_VALUE(monitor)
+ MONITOR_VALUE_RESET(monitor)
< MONITOR_MIN_VALUE_START(monitor))) {
/* If the min value since reset (as specified
in MONITOR_MIN_VALUE) plus the reset value is
less than MONITOR_MIN_VALUE_START, reset
MONITOR_MIN_VALUE_START to this new min value */
MONITOR_MIN_VALUE_START(monitor) =
MONITOR_MIN_VALUE(monitor)
+ MONITOR_VALUE_RESET(monitor);
}
return(MONITOR_MIN_VALUE_START(monitor));
}
/*************************************************************//**
This function resets all values of a monitor counter */
UNIV_INLINE
void
srv_mon_reset_all(
/*==============*/
monitor_id_t monitor) /*!< in: monitor id */
{
/* Do not reset all counter values if monitor is still on. */
if (MONITOR_IS_ON(monitor)) {
fprintf(stderr, "InnoDB: Cannot reset all values for"
" monitor counter %s while it is on. Please"
" turn it off and retry.\n",
srv_mon_get_name(monitor));
} else {
MONITOR_RESET_ALL(monitor);
}
}
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