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resolve: reuse timer event source for DnsQuery

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If the query get CNAME or DNAME, then the query will be restarted.
Even in that case, previously, the event source was freed and allocated
again. Let's slightly optimize it.
This commit is contained in:
Yu Watanabe 2022-02-05 22:31:06 +09:00
parent c704288c47
commit ecdfb9a1ae
1 changed files with 5 additions and 5 deletions
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10
src/resolve/resolved-dns-query.c
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@ -3,6 +3,7 @@
#include "alloc-util.h"
#include "dns-domain.h"
#include "dns-type.h"
#include "event-util.h"
#include "hostname-util.h"
#include "local-addresses.h"
#include "resolved-dns-query.h"
@ -348,7 +349,7 @@ static void dns_query_stop(DnsQuery *q) {
assert(q);
q->timeout_event_source = sd_event_source_disable_unref(q->timeout_event_source);
event_source_disable(q->timeout_event_source);
LIST_FOREACH(candidates_by_query, c, q->candidates)
dns_query_candidate_stop(c);
@ -794,17 +795,16 @@ int dns_query_go(DnsQuery *q) {
dns_query_reset_answer(q);
r = sd_event_add_time_relative(
r = event_reset_time_relative(
q->manager->event,
&q->timeout_event_source,
clock_boottime_or_monotonic(),
SD_RESOLVED_QUERY_TIMEOUT_USEC,
0, on_query_timeout, q);
0, on_query_timeout, q,
0, "query-timeout", true);
if (r < 0)
goto fail;
(void) sd_event_source_set_description(q->timeout_event_source, "query-timeout");
q->state = DNS_TRANSACTION_PENDING;
q->block_ready++;