From 322345fdb9865ef2477fba8e4bdde0e1183ef505 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Thu, 17 Jul 2014 19:38:37 +0200 Subject: resolved: add DNS cache --- src/resolve/resolved-dns-cache.h | 57 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 src/resolve/resolved-dns-cache.h (limited to 'src/resolve/resolved-dns-cache.h') diff --git a/src/resolve/resolved-dns-cache.h b/src/resolve/resolved-dns-cache.h new file mode 100644 index 0000000000..8d1cf95342 --- /dev/null +++ b/src/resolve/resolved-dns-cache.h @@ -0,0 +1,57 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#pragma once + +/*** + This file is part of systemd. + + Copyright 2014 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include + +#include "hashmap.h" +#include "prioq.h" +#include "time-util.h" +#include "list.h" + +typedef struct DnsCacheItem DnsCacheItem; + +typedef struct DnsCache { + Hashmap *rrsets; + Prioq *expire; +} DnsCache; + +#include "resolved-dns-rr.h" + +typedef struct DnsCacheItem { + DnsResourceRecord *rr; + usec_t timestamp; + unsigned expire_prioq_idx; + LIST_FIELDS(DnsCacheItem, rrsets); +} DnsCacheItem; + +void dns_cache_flush(DnsCache *c); +void dns_cache_prune(DnsCache *c); + +void dns_cache_remove(DnsCache *c, DnsResourceKey *key); + +int dns_cache_put(DnsCache *c, DnsResourceRecord *rr, usec_t timestamp); +int dns_cache_put_rrs(DnsCache *c, DnsResourceRecord **rrs, unsigned n_rrs, usec_t timestamp); + +DnsCacheItem* dns_cache_lookup(DnsCache *c, DnsResourceKey *key); +DnsCacheItem* dns_cache_get(DnsCache *c, DnsResourceRecord *rr); +int dns_cache_lookup_many(DnsCache *c, DnsResourceKey *keys, unsigned n_keys, DnsResourceRecord ***rrs); -- cgit v1.2.3-54-g00ecf