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optimize prefetch feature

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This commit is contained in:
Nick Peng
2019-01-18 00:19:17 +08:00
parent dd4372a961
commit bb1c4d2bfa
3 changed files with 20 additions and 1 deletions
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10
src/dns_cache.c
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@@ -72,6 +72,10 @@ int dns_cache_replace(char *domain, char *cname, int cname_ttl, int ttl, dns_typ
return 0;
}
if (ttl < DNS_CACHE_TTL_MIN) {
ttl = DNS_CACHE_TTL_MIN;
}
dns_cache->ttl = ttl;
dns_cache->qtype = qtype;
dns_cache->ttl = ttl;
@@ -125,12 +129,17 @@ int dns_cache_insert(char *domain, char *cname, int cname_ttl, int ttl, dns_type
goto errout;
}
if (ttl < DNS_CACHE_TTL_MIN) {
ttl = DNS_CACHE_TTL_MIN;
}
key = hash_string(domain);
key = jhash(&qtype, sizeof(qtype), key);
strncpy(dns_cache->domain, domain, DNS_MAX_CNAME_LEN);
dns_cache->cname[0] = 0;
dns_cache->qtype = qtype;
dns_cache->ttl = ttl;
dns_cache->hitnum = 6;
atomic_set(&dns_cache->ref, 1);
time(&dns_cache->insert_time);
if (qtype == DNS_T_A) {
@@ -247,6 +256,7 @@ void dns_cache_update(struct dns_cache *dns_cache)
if (!list_empty(&dns_cache->list)) {
list_del_init(&dns_cache->list);
list_add_tail(&dns_cache->list, &dns_cache_head.cache_list);
dns_cache->hitnum++;
}
pthread_mutex_unlock(&dns_cache_head.lock);
}