/usr/share/systemtap/runtime/map-stat.c is in systemtap-common 2.6-0.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | /* -*- linux-c -*-
* map functions to handle statistics
* Copyright (C) 2005, 2012 Red Hat Inc.
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
*/
/** @file map-stat.c
* @brief Map functions to handle statistics.
*/
#include "stat-common.c"
static void _stp_map_print_histogram (MAP map, stat_data *sd)
{
_stp_stat_print_histogram (&map->hist, sd);
}
static MAP _stp_map_new_hstat (unsigned max_entries, int wrap, int node_size)
{
MAP m = _stp_map_new (max_entries, wrap, node_size, -1);
if (m) {
m->hist.type = HIST_NONE;
}
return m;
}
static MAP _stp_map_new_hstat_log (unsigned max_entries, int wrap, int node_size)
{
MAP m;
/* the node already has stat_data, just add size for buckets */
node_size += HIST_LOG_BUCKETS * sizeof(int64_t);
m = _stp_map_new (max_entries, wrap, node_size, -1);
if (m) {
m->hist.type = HIST_LOG;
m->hist.buckets = HIST_LOG_BUCKETS;
}
return m;
}
static MAP
_stp_map_new_hstat_linear (unsigned max_entries, int wrap, int node_size,
int start, int stop, int interval)
{
MAP m;
int buckets = _stp_stat_calc_buckets(stop, start, interval);
if (!buckets)
return NULL;
/* the node already has stat_data, just add size for buckets */
node_size += buckets * sizeof(int64_t);
m = _stp_map_new (max_entries, wrap, node_size, -1);
if (m) {
m->hist.type = HIST_LINEAR;
m->hist.start = start;
m->hist.stop = stop;
m->hist.interval = interval;
m->hist.buckets = buckets;
}
return m;
}
static PMAP
_stp_pmap_new_hstat_linear (unsigned max_entries, int wrap, int node_size,
int start, int stop, int interval)
{
PMAP pmap;
int buckets = _stp_stat_calc_buckets(stop, start, interval);
if (!buckets)
return NULL;
/* the node already has stat_data, just add size for buckets */
node_size += buckets * sizeof(int64_t);
pmap = _stp_pmap_new (max_entries, wrap, node_size);
if (pmap) {
int i;
MAP m;
for_each_possible_cpu(i) {
m = _stp_pmap_get_map (pmap, i);
MAP_LOCK(m);
m->hist.type = HIST_LINEAR;
m->hist.start = start;
m->hist.stop = stop;
m->hist.interval = interval;
m->hist.buckets = buckets;
MAP_UNLOCK(m);
}
/* now set agg map params */
m = _stp_pmap_get_agg(pmap);
MAP_LOCK(m);
m->hist.type = HIST_LINEAR;
m->hist.start = start;
m->hist.stop = stop;
m->hist.interval = interval;
m->hist.buckets = buckets;
MAP_UNLOCK(m);
}
return pmap;
}
static PMAP
_stp_pmap_new_hstat_log (unsigned max_entries, int wrap, int node_size)
{
PMAP pmap;
/* the node already has stat_data, just add size for buckets */
node_size += HIST_LOG_BUCKETS * sizeof(int64_t);
pmap = _stp_pmap_new (max_entries, wrap, node_size);
if (pmap) {
int i;
MAP m;
for_each_possible_cpu(i) {
m = _stp_pmap_get_map (pmap, i);
MAP_LOCK(m);
m->hist.type = HIST_LOG;
m->hist.buckets = HIST_LOG_BUCKETS;
MAP_UNLOCK(m);
}
/* now set agg map params */
m = _stp_pmap_get_agg(pmap);
MAP_LOCK(m);
m->hist.type = HIST_LOG;
m->hist.buckets = HIST_LOG_BUCKETS;
MAP_UNLOCK(m);
}
return pmap;
}
static PMAP
_stp_pmap_new_hstat (unsigned max_entries, int wrap, int node_size)
{
PMAP pmap = _stp_pmap_new (max_entries, wrap, node_size);
if (pmap) {
int i;
MAP m;
for_each_possible_cpu(i) {
m = _stp_pmap_get_map (pmap, i);
MAP_LOCK(m);
m->hist.type = HIST_NONE;
MAP_UNLOCK(m);
}
/* now set agg map params */
m = _stp_pmap_get_agg(pmap);
MAP_LOCK(m);
m->hist.type = HIST_NONE;
MAP_UNLOCK(m);
}
return pmap;
}
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