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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file */
#include <isc/magic.h>
#include <isc/mem.h>
#include <isc/refcount.h>
#include <isc/stats.h>
#include <isc/util.h>
#include <ns/stats.h>
#define NS_STATS_MAGIC ISC_MAGIC('N', 's', 't', 't')
#define NS_STATS_VALID(x) ISC_MAGIC_VALID(x, NS_STATS_MAGIC)
struct ns_stats {
/*% Unlocked */
unsigned int magic;
isc_mem_t *mctx;
isc_stats_t *counters;
isc_refcount_t references;
};
void
ns_stats_attach(ns_stats_t *stats, ns_stats_t **statsp) {
REQUIRE(NS_STATS_VALID(stats));
REQUIRE(statsp != NULL && *statsp == NULL);
isc_refcount_increment(&stats->references);
*statsp = stats;
}
void
ns_stats_detach(ns_stats_t **statsp) {
ns_stats_t *stats;
REQUIRE(statsp != NULL && NS_STATS_VALID(*statsp));
stats = *statsp;
*statsp = NULL;
if (isc_refcount_decrement(&stats->references) == 1) {
isc_stats_detach(&stats->counters);
isc_refcount_destroy(&stats->references);
isc_mem_putanddetach(&stats->mctx, stats, sizeof(*stats));
}
}
isc_result_t
ns_stats_create(isc_mem_t *mctx, int ncounters, ns_stats_t **statsp) {
ns_stats_t *stats;
isc_result_t result;
REQUIRE(statsp != NULL && *statsp == NULL);
stats = isc_mem_get(mctx, sizeof(*stats));
stats->counters = NULL;
isc_refcount_init(&stats->references, 1);
result = isc_stats_create(mctx, &stats->counters, ncounters);
if (result != ISC_R_SUCCESS) {
goto clean_mem;
}
stats->magic = NS_STATS_MAGIC;
stats->mctx = NULL;
isc_mem_attach(mctx, &stats->mctx);
*statsp = stats;
return (ISC_R_SUCCESS);
clean_mem:
isc_mem_put(mctx, stats, sizeof(*stats));
return (result);
}
/*%
* Increment/Decrement methods
*/
void
ns_stats_increment(ns_stats_t *stats, isc_statscounter_t counter) {
REQUIRE(NS_STATS_VALID(stats));
isc_stats_increment(stats->counters, counter);
}
void
ns_stats_decrement(ns_stats_t *stats, isc_statscounter_t counter) {
REQUIRE(NS_STATS_VALID(stats));
isc_stats_decrement(stats->counters, counter);
}
isc_stats_t *
ns_stats_get(ns_stats_t *stats) {
REQUIRE(NS_STATS_VALID(stats));
return (stats->counters);
}
void
ns_stats_update_if_greater(ns_stats_t *stats, isc_statscounter_t counter,
isc_statscounter_t value) {
REQUIRE(NS_STATS_VALID(stats));
isc_stats_update_if_greater(stats->counters, counter, value);
}
isc_statscounter_t
ns_stats_get_counter(ns_stats_t *stats, isc_statscounter_t counter) {
REQUIRE(NS_STATS_VALID(stats));
return (isc_stats_get_counter(stats->counters, counter));
}
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