monix.execution.schedulers.TracingRunnable.scala Maven / Gradle / Ivy
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/*
* Copyright (c) 2014-2019 by The Monix Project Developers.
* See the project homepage at: https://monix.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 monix.execution.schedulers
import monix.execution.misc.Local
/** Wraps a `Runnable` into one that restores the given
* [[monix.execution.misc.Local.Context Local.Context]]
* upon execution of `run()`.
*
* Used by [[TracingScheduler]].
*/
final class TracingRunnable(r: Runnable, contextRef: Local.Context = Local.getContext()) extends Runnable {
override def run(): Unit = {
val prev = Local.getContext()
Local.setContext(contextRef)
try r.run()
finally Local.setContext(prev)
}
}