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8288723: Avoid redundant ConcurrentHashMap.get call in java.time

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Reviewed-by: attila, rriggs
This commit is contained in:
Andrey Turbanov 2022-07-21 10:22:58 +00:00
parent 3582fd9e93
commit 52cc6cd063
4 changed files with 14 additions and 28 deletions
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14
src/java.base/share/classes/java/time/ZoneOffset.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -424,15 +424,11 @@ public final class ZoneOffset
throw new DateTimeException("Zone offset not in valid range: -18:00 to +18:00");
}
if (totalSeconds % (15 * SECONDS_PER_MINUTE) == 0) {
Integer totalSecs = totalSeconds;
ZoneOffset result = SECONDS_CACHE.get(totalSecs);
if (result == null) {
result = new ZoneOffset(totalSeconds);
SECONDS_CACHE.putIfAbsent(totalSecs, result);
result = SECONDS_CACHE.get(totalSecs);
return SECONDS_CACHE.computeIfAbsent(totalSeconds, totalSecs -> {
ZoneOffset result = new ZoneOffset(totalSecs);
ID_CACHE.putIfAbsent(result.getId(), result);
}
return result;
return result;
});
} else {
return new ZoneOffset(totalSeconds);
}