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/*
ctdb statistics code
Copyright (C) Ronnie Sahlberg 2010
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; either version 3 of the License, or
(at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include <string.h>
#include "../include/ctdb_private.h"
static void ctdb_statistics_update(struct event_context *ev, struct timed_event *te,
struct timeval t, void *p)
{
struct ctdb_context *ctdb = talloc_get_type(p, struct ctdb_context);
memmove(&ctdb->statistics_history[1], &ctdb->statistics_history[0], (MAX_STAT_HISTORY-1)*sizeof(struct ctdb_statistics));
memcpy(&ctdb->statistics_history[0], &ctdb->statistics_current, sizeof(struct ctdb_statistics));
ctdb->statistics_history[0].statistics_current_time = timeval_current();
bzero(&ctdb->statistics_current, sizeof(struct ctdb_statistics));
ctdb->statistics_current.statistics_start_time = timeval_current();
event_add_timed(ctdb->ev, ctdb, timeval_current_ofs(ctdb->tunable.stat_history_interval, 0), ctdb_statistics_update, ctdb);
}
int ctdb_statistics_init(struct ctdb_context *ctdb)
{
bzero(&ctdb->statistics, sizeof(struct ctdb_statistics));
ctdb->statistics.statistics_start_time = timeval_current();
bzero(&ctdb->statistics_current, sizeof(struct ctdb_statistics));
ctdb->statistics_current.statistics_start_time = timeval_current();
bzero(ctdb->statistics_history, sizeof(ctdb->statistics_history));
event_add_timed(ctdb->ev, ctdb, timeval_current_ofs(ctdb->tunable.stat_history_interval, 0), ctdb_statistics_update, ctdb);
return 0;
}
int32_t ctdb_control_get_stat_history(struct ctdb_context *ctdb,
struct ctdb_req_control *c,
TDB_DATA *outdata)
{
int len;
struct ctdb_statistics_wire *s;
len = offsetof(struct ctdb_statistics_wire, stats) + MAX_STAT_HISTORY*sizeof(struct ctdb_statistics);
s = talloc_size(outdata, len);
if (s == NULL) {
DEBUG(DEBUG_ERR,(__location__ " Failed to allocate statistics history structure\n"));
return -1;
}
s->num = MAX_STAT_HISTORY;
memcpy(&s->stats[0], &ctdb->statistics_history[0], sizeof(ctdb->statistics_history));
outdata->dsize = len;
outdata->dptr = (uint8_t *)s;
return 0;
}
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