diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 07:24:22 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 07:24:22 +0000 |
commit | 45d6379135504814ab723b57f0eb8be23393a51d (patch) | |
tree | d4f2ec4acca824a8446387a758b0ce4238a4dffa /lib/ns/stats.c | |
parent | Initial commit. (diff) | |
download | bind9-upstream/1%9.16.44.tar.xz bind9-upstream/1%9.16.44.zip |
Adding upstream version 1:9.16.44.upstream/1%9.16.44upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/ns/stats.c')
-rw-r--r-- | lib/ns/stats.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/lib/ns/stats.c b/lib/ns/stats.c new file mode 100644 index 0000000..de5b083 --- /dev/null +++ b/lib/ns/stats.c @@ -0,0 +1,128 @@ +/* + * 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)); +} |