mirror of
https://gitlab.isc.org/isc-projects/bind9
synced 2025-08-23 02:28:55 +00:00
cd632ad31d
This implements node reference tracing that passes all the internal
layers from dns_db API (and friends) to increment_reference() and
decrement_reference().
It can be enabled by #defining DNS_DB_NODETRACE in <dns/trace.h> header.
The output then looks like this:
incr:node:check_address_records:rootns.c:409:0x7f67f5a55a40->references = 1
decr:node:check_address_records:rootns.c:449:0x7f67f5a55a40->references = 0
incr:nodelock:check_address_records:rootns.c:409:0x7f67f5a55a40:0x7f68304d7040->references = 1
decr:nodelock:check_address_records:rootns.c:449:0x7f67f5a55a40:0x7f68304d7040->references = 0
There's associated python script to find the missing detach located at:
https://gitlab.isc.org/isc-projects/bind9/-/snippets/1038
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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/*! \file */
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#include <stddef.h>
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#include <isc/util.h>
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#include <dns/rdataset.h>
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#include <dns/rdatasetiter.h>
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void
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dns__rdatasetiter_destroy(dns_rdatasetiter_t **iteratorp DNS__DB_FLARG) {
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/*
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* Destroy '*iteratorp'.
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*/
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REQUIRE(iteratorp != NULL);
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REQUIRE(DNS_RDATASETITER_VALID(*iteratorp));
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(*iteratorp)->methods->destroy(iteratorp DNS__DB_FLARG_PASS);
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ENSURE(*iteratorp == NULL);
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}
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isc_result_t
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dns__rdatasetiter_first(dns_rdatasetiter_t *iterator DNS__DB_FLARG) {
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/*
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* Move the rdataset cursor to the first rdataset at the node (if any).
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*/
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REQUIRE(DNS_RDATASETITER_VALID(iterator));
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return (iterator->methods->first(iterator DNS__DB_FLARG_PASS));
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}
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isc_result_t
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dns__rdatasetiter_next(dns_rdatasetiter_t *iterator DNS__DB_FLARG) {
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/*
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* Move the rdataset cursor to the next rdataset at the node (if any).
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*/
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REQUIRE(DNS_RDATASETITER_VALID(iterator));
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return (iterator->methods->next(iterator DNS__DB_FLARG_PASS));
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}
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void
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dns__rdatasetiter_current(dns_rdatasetiter_t *iterator,
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dns_rdataset_t *rdataset DNS__DB_FLARG) {
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/*
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* Return the current rdataset.
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*/
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REQUIRE(DNS_RDATASETITER_VALID(iterator));
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REQUIRE(DNS_RDATASET_VALID(rdataset));
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REQUIRE(!dns_rdataset_isassociated(rdataset));
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iterator->methods->current(iterator, rdataset DNS__DB_FLARG_PASS);
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}
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