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/*****************************************************************************
Copyright (c) 2010, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License, version 2.0, as published by the
Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
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, version 2.0,
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 St, Fifth Floor, Boston, MA 02110-1301 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. */
static 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. */
static 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 */
static 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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