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Merge branch '1206-tcp-high-water-stats-fix-type' into 'master'

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Avoid an extra atomic_load call when doing atomic_compare_exchange_loop

See merge request isc-projects/bind9!2531
This commit is contained in:
Ondřej Surý 2019-11-06 11:31:31 +00:00
commit 7c7f5884e5
1 changed files with 2 additions and 5 deletions
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7
lib/isc/stats.c
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@ -157,15 +157,12 @@ void isc_stats_update_if_greater(isc_stats_t *stats,
REQUIRE(ISC_STATS_VALID(stats));
REQUIRE(counter < stats->ncounters);
isc_statscounter_t curr_value;
isc_statscounter_t curr_value =
atomic_load_relaxed(&stats->counters[counter]);
do {
curr_value = atomic_load_explicit(&stats->counters[counter],
memory_order_relaxed);
if (curr_value >= value) {
break;
}
} while (!atomic_compare_exchange_strong(&stats->counters[counter],
&curr_value,
value));