1/*****************************************************************************
2
3Copyright (c) 2010, 2013, Oracle and/or its affiliates. All Rights Reserved.
4
5This program is free software; you can redistribute it and/or modify it under
6the terms of the GNU General Public License as published by the Free Software
7Foundation; version 2 of the License.
8
9This program is distributed in the hope that it will be useful, but WITHOUT
10ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12
13You should have received a copy of the GNU General Public License along with
14this program; if not, write to the Free Software Foundation, Inc.,
1551 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
16
17*****************************************************************************/
18
19/*******************************************************************//**
20@file include/srv0mon.ic
21Server monitoring system
22
23Created 1/20/2010 Jimmy Yang
24************************************************************************/
25
26/*************************************************************//**
27This function is used to calculate the maximum counter value
28since the start of monitor counter
29@return max counter value since start. */
30UNIV_INLINE
31mon_type_t
32srv_mon_calc_max_since_start(
33/*=========================*/
34 monitor_id_t monitor) /*!< in: monitor id */
35{
36 if (MONITOR_MAX_VALUE_START(monitor) == MAX_RESERVED) {
37
38 /* MONITOR_MAX_VALUE_START has not yet been
39 initialized, the max value since start is the
40 max count in MONITOR_MAX_VALUE */
41 MONITOR_MAX_VALUE_START(monitor) =
42 MONITOR_MAX_VALUE(monitor);
43
44 } else if (MONITOR_MAX_VALUE(monitor) != MAX_RESERVED
45 && (MONITOR_MAX_VALUE(monitor)
46 + MONITOR_VALUE_RESET(monitor)
47 > MONITOR_MAX_VALUE_START(monitor))) {
48
49 /* If the max value since reset (as specified
50 in MONITOR_MAX_VALUE) plus the reset value is
51 larger than MONITOR_MAX_VALUE_START, reset
52 MONITOR_MAX_VALUE_START to this new max value */
53 MONITOR_MAX_VALUE_START(monitor) =
54 MONITOR_MAX_VALUE(monitor)
55 + MONITOR_VALUE_RESET(monitor);
56 }
57
58 return(MONITOR_MAX_VALUE_START(monitor));
59}
60
61/*************************************************************//**
62This function is used to calculate the minimum counter value
63since the start of monitor counter
64@return min counter value since start. */
65UNIV_INLINE
66mon_type_t
67srv_mon_calc_min_since_start(
68/*=========================*/
69 monitor_id_t monitor) /*!< in: monitor id */
70{
71 if (MONITOR_MIN_VALUE_START(monitor) == MIN_RESERVED) {
72
73 /* MONITOR_MIN_VALUE_START has not yet been
74 initialized, the min value since start is the
75 min count in MONITOR_MIN_VALUE */
76 MONITOR_MIN_VALUE_START(monitor) =
77 MONITOR_MIN_VALUE(monitor);
78
79 } else if (MONITOR_MIN_VALUE(monitor) != MIN_RESERVED
80 && (MONITOR_MIN_VALUE(monitor)
81 + MONITOR_VALUE_RESET(monitor)
82 < MONITOR_MIN_VALUE_START(monitor))) {
83
84 /* If the min value since reset (as specified
85 in MONITOR_MIN_VALUE) plus the reset value is
86 less than MONITOR_MIN_VALUE_START, reset
87 MONITOR_MIN_VALUE_START to this new min value */
88 MONITOR_MIN_VALUE_START(monitor) =
89 MONITOR_MIN_VALUE(monitor)
90 + MONITOR_VALUE_RESET(monitor);
91 }
92
93 return(MONITOR_MIN_VALUE_START(monitor));
94}
95
96/*************************************************************//**
97This function resets all values of a monitor counter */
98UNIV_INLINE
99void
100srv_mon_reset_all(
101/*==============*/
102 monitor_id_t monitor) /*!< in: monitor id */
103{
104 /* Do not reset all counter values if monitor is still on. */
105 if (MONITOR_IS_ON(monitor)) {
106 fprintf(stderr, "InnoDB: Cannot reset all values for"
107 " monitor counter %s while it is on. Please"
108 " turn it off and retry.\n",
109 srv_mon_get_name(monitor));
110 } else {
111 MONITOR_RESET_ALL(monitor);
112 }
113}
114