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Use ConcurrentHashMap

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chimp1984 2020-12-15 09:05:33 -05:00
parent 5112b1a54b
commit 0f084d3aec
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1 changed files with 8 additions and 4 deletions
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core/src/main/java/bisq/core/locale/CurrencyUtil.java
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@ -37,12 +37,12 @@ import java.util.Arrays;
import java.util.Collection;
import java.util.Comparator;
import java.util.Currency;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collectors;
@ -62,9 +62,13 @@ public class CurrencyUtil {
private static String baseCurrencyCode = "BTC";
// Calls to isFiatCurrency and isCryptoCurrency are very frequent so we use a cache of the results
private static final Map<String, Boolean> isFiatCurrencyMap = new HashMap<>();
private static final Map<String, Boolean> isCryptoCurrencyMap = new HashMap<>();
// Calls to isFiatCurrency and isCryptoCurrency are very frequent so we use a cache of the results.
// The main improvement was already achieved with using memoize for the source maps, but
// the caching still improves performance by about 20% for isCryptoCurrency and about 100%
// for isFiatCurrency calls.
// See: https://github.com/bisq-network/bisq/pull/4955#issuecomment-745302802
private static final Map<String, Boolean> isFiatCurrencyMap = new ConcurrentHashMap<>();
private static final Map<String, Boolean> isCryptoCurrencyMap = new ConcurrentHashMap<>();
private static Supplier<Map<String, FiatCurrency>> fiatCurrencyMapSupplier = Suppliers.memoize(
CurrencyUtil::createFiatCurrencyMap)::get;