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Fix returnTokensImpl in TokenBucket #2113

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Fix returnTokensImpl in TokenBucket #2113

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6 changes: 3 additions & 3 deletions folly/TokenBucket.h
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Original file line number Diff line number Diff line change
Expand Up @@ -193,14 +193,14 @@ class TokenBucketStorage {
* into the future.
*/
double returnTokensImpl(double tokenCount, double rate) {
auto zeroTimeOld = zeroTime_.load(std::memory_order_relaxed);

double zeroTimeOld;
double zeroTimeNew;
do {
zeroTimeOld = zeroTime();
zeroTimeNew = zeroTimeOld - tokenCount / rate;

} while (FOLLY_UNLIKELY(
!compare_exchange_weak_relaxed(zeroTime_, zeroTimeOld, zeroTimeNew)));

return zeroTimeNew;
}

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