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• InTxn.scala

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scala.concurrent.stm.InTxn.scala Maven / Gradle / Ivy

/* scala-stm - (c) 2009-2011, Stanford University, PPL */

package scala.concurrent.stm

/** The presence of an implicit `InTxn` instance grants the caller permission
 *  to perform transactional reads and writes on `Ref` instances, as well as
 *  permission to call `object Txn` methods that require an `InTxnEnd`.
 *  `InTxn` instances themselves might be reused by the STM, use
 *  `NestingLevel.current` or `NestingLevel.root` to get a `NestingLevel` if
 *  you need to track an individual execution attempt.
 *
 *  @author Nathan Bronson
 */
trait InTxn extends InTxnEnd