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Code Issues Releases Wiki Activity

Avoid an extra atomic_load() call

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This commit is contained in:
Ondřej Surý
2019-11-06 10:49:28 +01:00
parent 3361247519
commit b4df5a6ecb
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));