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Diffstat (limited to 'kamon-core/src/main/scala/kamon/util/Sequencer.scala')
| -rw-r--r-- | kamon-core/src/main/scala/kamon/util/Sequencer.scala | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/kamon-core/src/main/scala/kamon/util/Sequencer.scala b/kamon-core/src/main/scala/kamon/util/Sequencer.scala deleted file mode 100644 index f368e54f..00000000 --- a/kamon-core/src/main/scala/kamon/util/Sequencer.scala +++ /dev/null @@ -1,40 +0,0 @@ -/* - * ========================================================================================= - * Copyright © 2013-2014 the kamon project <http://kamon.io/> - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software distributed under the - * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, - * either express or implied. See the License for the specific language governing permissions - * and limitations under the License. - * ========================================================================================= - */ - -package kamon.util - -/** - * This class implements an extremely efficient, thread-safe way to generate a - * incrementing sequence of Longs with a simple Long overflow protection. - */ -class Sequencer { - private val CloseToOverflow = Long.MaxValue - 1000000000 - private val sequenceNumber = new PaddedAtomicLong(1L) - - def next(): Long = { - val current = sequenceNumber.getAndIncrement - - // check if this value is getting close to overflow? - if (current > CloseToOverflow) { - sequenceNumber.set(current - CloseToOverflow) // we need maintain the order - } - current - } -} - -object Sequencer { - def apply(): Sequencer = new Sequencer() -}
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