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/* -*- linux-c -*-
* map functions to handle statistics
* Copyright (C) 2005 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 *sd)
{
_stp_stat_print_histogram (&map->hist, sd);
}
static MAP _stp_map_new_hstat_log (unsigned max_entries, int key_size, int buckets)
{
/* add size for buckets */
int size = buckets * sizeof(int64_t) + sizeof(stat);
MAP m = _stp_map_new (max_entries, STAT, key_size, size);
if (m) {
m->hist.type = HIST_LOG;
m->hist.buckets = buckets;
if (buckets < 1 || buckets > 64) {
_stp_warn("histogram: Bad number of buckets. Must be between 1 and 64\n");
m->hist.type = HIST_NONE;
return m;
}
}
return m;
}
static MAP _stp_map_new_hstat_linear (unsigned max_entries, int ksize, int start, int stop, int interval)
{
MAP m;
int size;
int buckets = (stop - start) / interval;
if ((stop - start) % interval) buckets++;
/* add size for buckets */
size = buckets * sizeof(int64_t) + sizeof(stat);
m = _stp_map_new (max_entries, STAT, ksize, size);
if (m) {
m->hist.type = HIST_LINEAR;
m->hist.start = start;
m->hist.stop = stop;
m->hist.interval = interval;
m->hist.buckets = buckets;
if (m->hist.buckets <= 0) {
_stp_warn("histogram: bad stop, start and/or interval\n");
m->hist.type = HIST_NONE;
return m;
}
}
return m;
}
static PMAP _stp_pmap_new_hstat_linear (unsigned max_entries, int ksize, int start, int stop, int interval)
{
PMAP pmap;
int size;
int buckets = (stop - start) / interval;
if ((stop - start) % interval) buckets++;
/* add size for buckets */
size = buckets * sizeof(int64_t) + sizeof(stat);
pmap = _stp_pmap_new (max_entries, STAT, ksize, size);
if (pmap) {
int i;
MAP m;
for_each_cpu(i) {
m = (MAP)per_cpu_ptr (pmap->map, i);
m->hist.type = HIST_LINEAR;
m->hist.start = start;
m->hist.stop = stop;
m->hist.interval = interval;
m->hist.buckets = buckets;
}
/* now set agg map params */
m = &pmap->agg;
m->hist.type = HIST_LINEAR;
m->hist.start = start;
m->hist.stop = stop;
m->hist.interval = interval;
m->hist.buckets = buckets;
}
return pmap;
}
static PMAP _stp_pmap_new_hstat_log (unsigned max_entries, int key_size, int buckets)
{
/* add size for buckets */
int size = buckets * sizeof(int64_t) + sizeof(stat);
PMAP pmap = _stp_pmap_new (max_entries, STAT, key_size, size);
if (pmap) {
int i;
MAP m;
for_each_cpu(i) {
m = (MAP)per_cpu_ptr (pmap->map, i);
m->hist.type = HIST_LOG;
m->hist.buckets = buckets;
}
/* now set agg map params */
m = &pmap->agg;
m->hist.type = HIST_LOG;
m->hist.buckets = buckets;
}
return pmap;
}