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Java 8 uses the XADD instruction when incrementing atomic integers, instead of doing a loop with LOCK CMPXCHG. We can use it too in our implementation by means of Unsafe.getAndAddInt and getAndAddLong.
Java 8 uses the
XADD
instruction when incrementing atomic integers, instead of doing a loop withLOCK CMPXCHG
. We can use it too in our implementation by means ofUnsafe.getAndAddInt
andgetAndAddLong
.See for details:
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