zio.internal.Blocking.scala Maven / Gradle / Ivy
/*
* Copyright 2017-2024 John A. De Goes and the ZIO Contributors
*
* 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 zio.internal
import zio.stacktracer.TracingImplicits.disableAutoTrace
import java.util.concurrent.{SynchronousQueue, ThreadPoolExecutor, TimeUnit}
object Blocking {
val blockingExecutor: zio.Executor =
zio.Executor.fromThreadPoolExecutor {
val corePoolSize = 0
val maxPoolSize = Int.MaxValue
val keepAliveTime = 60000L
val timeUnit = TimeUnit.MILLISECONDS
val workQueue = new SynchronousQueue[Runnable]()
val threadFactory = new NamedThreadFactory("zio-default-blocking", true)
val threadPool = new ThreadPoolExecutor(
corePoolSize,
maxPoolSize,
keepAliveTime,
timeUnit,
workQueue,
threadFactory
)
threadPool
}
/**
* Signals to the scheduler that the current thread is about to block. This
* method is a no-op except when the current thread is a ZScheduler.Worker. In
* that case, the worker is marked as "blocking" and a new worker is spawned
* to replace it.
*/
private[zio] final def signalBlocking(): Unit =
ZScheduler.markCurrentWorkerAsBlocking()
}