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benchmarks.scala
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benchmarks.scala
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package com.thoughtworks.dsl
import java.util.concurrent.{ExecutorService, Executors}
import com.thoughtworks.dsl.Dsl.!!
import com.thoughtworks.dsl.keywords.{Each, Shift}
import scala.util.{Failure, Success, Try, continuations}
import com.thoughtworks.dsl.keywords.Shift.implicitShift
import monix.execution.{Cancelable, Scheduler}
import org.openjdk.jmh.annotations.{Fork => JmhFork, _}
import scala.annotation.tailrec
import scala.concurrent.duration._
import scala.concurrent._
import scala.util.continuations._
import scala.util.control.{NoStackTrace, NonFatal}
import scala.async.Async._
object benchmarks {
private def blockingAwaitControlContext[A](task: ControlContext[A, Unit, Unit]): A = {
val syncVar = new SyncVar[Try[A]]
task.foreachFull({ a =>
syncVar.put(Success(a))
}, { e =>
syncVar.put(Failure(e))
})
syncVar.take(TimeOut.toMillis).get
}
private def blockingAwaitContinuations[A](task: => A @suspendable): A = {
blockingAwaitControlContext(reify(task))
}
private def blockingAwaitMonix[A](task: _root_.monix.eval.Task[A]): A = {
val syncVar = new SyncVar[Try[A]]
task.runOnComplete(syncVar.put)(Scheduler.trampoline())
syncVar.take(TimeOut.toMillis).get
}
final class IntException(val n: Int) extends Exception with NoStackTrace
@State(Scope.Benchmark)
abstract class BenchmarkState
final val ThreadPool = "thread-pool"
final val CurrentThread = "current-thread"
final val TimeOut = 5.seconds
abstract class SumState extends BenchmarkState {
var size: Int
@Param(Array(ThreadPool, CurrentThread))
var executedIn: String = _
protected def continuationTask: List[() => Int @suspendable] = {
executedIn match {
case ThreadPool =>
List.fill(size)(() =>
shift { (continue: Int => Unit) =>
threadPool.execute(new Runnable {
def run(): Unit = continue(1)
})
})
case CurrentThread =>
List.fill(size)(() => shiftUnit(1))
}
}
protected def inputDslTasks: List[task.Task[Int]] = {
import task.Task
{
executedIn match {
case ThreadPool =>
List.fill(size)(_ {
!Task.switchExecutionContext(threadPool)
1
})
case CurrentThread =>
List.fill(size)(_(1))
}
}
}
protected def inputMonixTasks = {
import _root_.monix.eval.Task
val scheduler = Scheduler(threadPool: ExecutorService)
executedIn match {
case ThreadPool =>
List.fill(size)(Task.fork(Task.eval(1), scheduler))
case CurrentThread =>
List.fill(size)(Task.now(1))
}
}
protected def inputCatsIOs = {
import _root_.cats.effect.IO
executedIn match {
case ThreadPool =>
List.fill(size) {
for {
_ <- IO.shift(threadPool)
} yield 1
}
case CurrentThread =>
List.fill(size)(IO.pure(1))
}
}
protected def inputScalazTasks = {
import _root_.scalaz.concurrent.Task
executedIn match {
case ThreadPool =>
List.fill(size)(Task(1)(threadPool))
case CurrentThread =>
List.fill(size)(Task.now(1))
}
}
protected def inputFutures = {
import _root_.scala.concurrent.Future
executedIn match {
case ThreadPool =>
List.fill(size)(Future(1)(threadPool))
case CurrentThread =>
List.fill(size)(Future.successful(1))
}
}
implicit protected lazy val threadPool = {
ExecutionContext.fromExecutorService(Executors.newWorkStealingPool())
}
@TearDown
def tearDown(): Unit = {
threadPool.shutdownNow()
}
}
class RawCartesianProduct extends SumState {
@Param(Array("50"))
var size: Int = _
@Benchmark
def dsl() = {
import com.thoughtworks.dsl.task._
def cellTask(taskX: Task[Int], taskY: Task[Int]): Task[List[Int]] = _ {
List(!taskX, !taskY)
}
def listTask: Task[List[Int]] = {
cellTask(!Each(inputDslTasks), !Each(inputDslTasks))
}
Task.blockingAwait(listTask, TimeOut)
}
@Benchmark
def monix() = {
import _root_.monix.eval.Task
import _root_.monix.scalaz._
import _root_.scalaz.std.list._
import _root_.scalaz.syntax.all._
def cellTask(taskX: Task[Int], taskY: Task[Int]): Task[List[Int]] =
for {
x <- taskX
y <- taskY
} yield List(x, y)
def listTask: Task[List[Int]] = {
inputMonixTasks.traverseM { taskX =>
inputMonixTasks.traverseM { taskY =>
cellTask(taskX, taskY)
}
}
}
blockingAwaitMonix(listTask)
}
@Benchmark
def cats() = {
import _root_.cats.syntax.all._
import _root_.cats.effect.IO
import _root_.cats.instances.list._
def cellTask(taskX: IO[Int], taskY: IO[Int]): IO[List[Int]] =
for {
x <- taskX
y <- taskY
} yield List(x, y)
def listTask: IO[List[Int]] = {
inputCatsIOs.flatTraverse { taskX =>
inputCatsIOs.flatTraverse { taskY =>
cellTask(taskX, taskY)
}
}
}
listTask.unsafeRunTimed(TimeOut).get
}
@Benchmark
def scalaz() = {
import _root_.scalaz.syntax.all._
import _root_.scalaz.concurrent.Task
import _root_.scalaz.std.list._
def cellTask(taskX: Task[Int], taskY: Task[Int]): Task[List[Int]] =
for {
x <- taskX
y <- taskY
} yield List(x, y)
def listTask: Task[List[Int]] = {
inputScalazTasks.traverseM { taskX =>
inputScalazTasks.traverseM { taskY =>
cellTask(taskX, taskY)
}
}
}
listTask.unsafePerformSyncFor(TimeOut)
}
@Benchmark
def future() = {
import _root_.scala.concurrent.Future
import _root_.scalaz.std.list._
import _root_.scalaz.std.scalaFuture._
import _root_.scalaz.syntax.all._
def cellTask(taskX: Future[Int], taskY: Future[Int]): Future[List[Int]] = async {
List(await(taskX), await(taskY))
}
def listTask: Future[List[Int]] = {
inputFutures.traverseM { taskX =>
inputFutures.traverseM { taskY =>
cellTask(taskX, taskY)
}
}
}
Await.result(listTask, TimeOut)
}
}
class CartesianProduct extends SumState {
@Param(Array("50"))
var size: Int = _
@Benchmark
def dsl() = {
import com.thoughtworks.dsl.task._
def listTask: Task[List[Int]] = Task.reset {
List(!(!Each(inputDslTasks)), !(!Each(inputDslTasks)))
}
Task.blockingAwait(listTask, TimeOut)
}
@Benchmark
def monix() = {
import _root_.monix.eval.Task
import _root_.monix.scalaz._
import _root_.scalaz.ListT
import _root_.scalaz.syntax.all._
def listTask: Task[List[Int]] = {
for {
taskX <- ListT(Task.now(inputMonixTasks))
taskY <- ListT(Task.now(inputMonixTasks))
x <- taskX.liftM[ListT]
y <- taskY.liftM[ListT]
r <- ListT(Task.now(List(x, y)))
} yield r
}.run
blockingAwaitMonix(listTask)
}
@Benchmark
def scalaz() = {
import _root_.scalaz.syntax.all._
import _root_.scalaz.concurrent.Task
import _root_.scalaz.ListT
def listTask: Task[List[Int]] = {
for {
taskX <- ListT(Task.now(inputScalazTasks))
taskY <- ListT(Task.now(inputScalazTasks))
x <- taskX.liftM[ListT]
y <- taskY.liftM[ListT]
r <- ListT(Task.now(List(x, y)))
} yield r
}.run
listTask.unsafePerformSyncFor(TimeOut)
}
@Benchmark
def future() = {
import _root_.scalaz.syntax.all._
import _root_.scalaz.ListT
import _root_.scalaz.std.scalaFuture._
def listTask: Future[List[Int]] = {
for {
taskX <- ListT(Future.successful(inputFutures))
taskY <- ListT(Future.successful(inputFutures))
x <- taskX.liftM[ListT]
y <- taskY.liftM[ListT]
r <- ListT(Future.successful(List(x, y)))
} yield r
}.run
Await.result(listTask, TimeOut)
}
}
class RawSum extends SumState {
@Param(Array("1000"))
var size: Int = _
@Benchmark
def scalaContinuation() = {
@inline def loop(tasks: List[() => Int @suspendable], accumulator: Int = 0): ControlContext[Int, Unit, Unit] = {
tasks match {
case head :: tail =>
reify(head()).flatMap { i: Int =>
loop(tail, i + accumulator)
}
case Nil =>
new ControlContext[Int, Unit, Unit](null, accumulator)
}
}
blockingAwaitControlContext(loop(continuationTask))
}
@Benchmark
def dsl() = {
import com.thoughtworks.dsl.task._
@inline def loop(tasks: List[Task[Int]], accumulator: Int = 0)(continue: Int => TaskDomain): TaskDomain = {
tasks match {
case head :: tail =>
// Expand to: head.cpsApply(i => loop(tail, i + accumulator)(continue))
loop(tail, !head + accumulator)(continue)
case Nil =>
continue(accumulator)
}
}
Task.blockingAwait(loop(inputDslTasks), TimeOut)
}
@Benchmark
def cats() = {
import _root_.cats.effect.IO
@inline def loop(tasks: List[IO[Int]], accumulator: Int = 0): IO[Int] = {
tasks match {
case head :: tail =>
head.flatMap { i =>
loop(tail, i + accumulator)
}
case Nil =>
IO.pure(accumulator)
}
}
loop(inputCatsIOs).unsafeRunTimed(TimeOut).get
}
@Benchmark
def monix() = {
import _root_.monix.eval.Task
@inline def loop(tasks: List[Task[Int]], accumulator: Int = 0): Task[Int] = {
tasks match {
case head :: tail =>
head.flatMap { i =>
loop(tail, i + accumulator)
}
case Nil =>
Task.now(accumulator)
}
}
blockingAwaitMonix(loop(inputMonixTasks))
}
@Benchmark
def scalaz() = {
import _root_.scalaz.concurrent.Task
@inline def loop(tasks: List[Task[Int]], accumulator: Int = 0): Task[Int] = {
tasks match {
case head :: tail =>
head.flatMap { i =>
loop(tail, i + accumulator)
}
case Nil =>
Task.now(accumulator)
}
}
loop(inputScalazTasks).unsafePerformSyncFor(TimeOut)
}
@Benchmark
def future() = {
import _root_.scala.concurrent.Future
@inline def loop(tasks: List[Future[Int]], accumulator: Int = 0): Future[Int] = {
tasks match {
case head :: tail =>
head.flatMap { i =>
loop(tail, i + accumulator)
}
case Nil =>
Future.successful(accumulator)
}
}
Await.result(loop(inputFutures), TimeOut)
}
}
class LeftAssociatedSum extends SumState {
@Param(Array("1000"))
var size: Int = _
@Benchmark
def scalaContinuation() = {
@inline def loop(tasks: List[() => Int @suspendable]): Int @suspendable = {
tasks match {
case head :: tail =>
head() + loop(tail)
case Nil =>
0
}
}
blockingAwaitContinuations(loop(continuationTask))
}
@Benchmark
def dsl() = {
import com.thoughtworks.dsl.task._
@inline def loop(tasks: List[Task[Int]]): Task[Int] = _ {
tasks match {
case head :: tail =>
!head + !loop(tail)
case Nil =>
0
}
}
Task.blockingAwait(loop(inputDslTasks), TimeOut)
}
@Benchmark
def future() = {
import _root_.scala.concurrent.Future
@inline def loop(tasks: List[Future[Int]]): Future[Int] = async {
tasks match {
case head :: tail =>
await(head) + await(loop(tail))
case Nil =>
0
}
}
Await.result(loop(inputFutures), TimeOut)
}
@Benchmark
def monix() = {
import _root_.monix.eval.Task
@inline def loop(tasks: List[Task[Int]]): Task[Int] = {
tasks match {
case head :: tail =>
for {
i <- head
accumulator <- loop(tail)
} yield i + accumulator
case Nil =>
Task(0)
}
}
blockingAwaitMonix(loop(inputMonixTasks))
}
@Benchmark
def scalaz() = {
import _root_.scalaz.concurrent.Task
@inline def loop(tasks: List[Task[Int]]): Task[Int] = {
tasks match {
case head :: tail =>
for {
i <- head
accumulator <- loop(tail)
} yield i + accumulator
case Nil =>
Task(0)
}
}
loop(inputScalazTasks).unsafePerformSyncFor(TimeOut)
}
@Benchmark
def cats() = {
import _root_.cats.effect.IO
@inline def loop(tasks: List[IO[Int]]): IO[Int] = {
tasks match {
case head :: tail =>
for {
i <- head
accumulator <- loop(tail)
} yield i + accumulator
case Nil =>
IO.pure(0)
}
}
loop(inputCatsIOs).unsafeRunTimed(TimeOut).get
}
}
class RightAssociatedSum extends SumState {
@Param(Array("1000"))
var size: Int = _
@Benchmark
def scalaContinuation() = {
@inline def loop(tasks: List[() => Int @suspendable], accumulator: Int = 0): Int @suspendable = {
tasks match {
case head :: tail =>
loop(tail, head() + accumulator)
case Nil =>
accumulator
}
}
blockingAwaitContinuations(loop(continuationTask))
}
@Benchmark
def dsl() = {
import com.thoughtworks.dsl.task._
@inline def loop(tasks: List[Task[Int]], accumulator: Int = 0): Task[Int] = _ {
tasks match {
case head :: tail =>
!loop(tail, !head + accumulator)
case Nil =>
accumulator
}
}
Task.blockingAwait(loop(inputDslTasks), TimeOut)
}
@Benchmark
def cats() = {
import _root_.cats.effect.IO
@inline def loop(tasks: List[IO[Int]], accumulator: Int = 0): IO[Int] = {
tasks match {
case head :: tail =>
for {
i <- head
r <- loop(tail, i + accumulator)
} yield r
case Nil =>
IO.pure(accumulator)
}
}
loop(inputCatsIOs).unsafeRunTimed(TimeOut).get
}
@Benchmark
def monix() = {
import _root_.monix.eval.Task
@inline def loop(tasks: List[Task[Int]], accumulator: Int = 0): Task[Int] = {
tasks match {
case head :: tail =>
for {
i <- head
r <- loop(tail, i + accumulator)
} yield r
case Nil =>
Task.now(accumulator)
}
}
blockingAwaitMonix(loop(inputMonixTasks))
}
@Benchmark
def scalaz() = {
import _root_.scalaz.concurrent.Task
@inline def loop(tasks: List[Task[Int]], accumulator: Int = 0): Task[Int] = {
tasks match {
case head :: tail =>
for {
i <- head
r <- loop(tail, i + accumulator)
} yield r
case Nil =>
Task.now(accumulator)
}
}
loop(inputScalazTasks).unsafePerformSyncFor(TimeOut)
}
@Benchmark
def future() = {
import _root_.scala.concurrent.Future
@inline def loop(tasks: List[Future[Int]], accumulator: Int = 0): Future[Int] = async {
tasks match {
case head :: tail =>
await(loop(tail, await(head) + accumulator))
case Nil =>
accumulator
}
}
Await.result(loop(inputFutures), TimeOut)
}
}
}