swift/test/Concurrency/Runtime/async_task_executor_structured_concurrency.swift at main · ian-twilightcoder/swift · GitHub

Name: swift/test/Concurrency/Runtime/async_task_executor_structured_concurrency.swift at main · ian-twilightcoder/swift · GitHub
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// RUN: %target-run-simple-swift( -Xfrontend -disable-availability-checking %import-libdispatch -parse-as-library )

// REQUIRES: executable_test
// REQUIRES: concurrency
// REQUIRES: libdispatch

// REQUIRES: concurrency_runtime
// UNSUPPORTED: back_deployment_runtime
// rdar://126118749
// UNSUPPORTED: CPU=arm64e

import Dispatch
import StdlibUnittest

import Dispatch

finalclassMyTaskExecutor:TaskExecutor,@uncheckedSendable{
letqueue:DispatchQueue

init(queue:DispatchQueue){
self.queue = queue
}

func enqueue(_ job:consumingExecutorJob){
letjob=UnownedJob(job)
 queue.async{
 job.runSynchronously(on:self.asUnownedTaskExecutor())
}
}
}

func testTaskGroup(_ firstExecutor:MyTaskExecutor,
 _ secondExecutor:MyTaskExecutor)async{
 // 1 level of child tasks
awaitwithTaskGroup(of:Int.self){ group in
 group.addTask(executorPreference: firstExecutor){
dispatchPrecondition(condition:.onQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
return1
}
}
awaitwithThrowingTaskGroup(of:Int.self){ group in
 group.addTask(executorPreference: firstExecutor){
dispatchPrecondition(condition:.onQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
return2
}
}
awaitwithDiscardingTaskGroup(){ group in
 group.addTask(executorPreference: firstExecutor){
dispatchPrecondition(condition:.onQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
}
}
try!awaitwithThrowingDiscardingTaskGroup(){ group in
 group.addTask(executorPreference: firstExecutor){
dispatchPrecondition(condition:.onQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
}
}

 // Multiple levels of child tasks
awaitwithTaskGroup(of:Int.self){ group in
 group.addTask(executorPreference: firstExecutor){
dispatchPrecondition(condition:.onQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))

returnawaitwithTaskGroup(of:Int.self){ group in
 group.addTask(executorPreference: secondExecutor){
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.onQueue(secondExecutor.queue))
return12
}
returnawait group.next()!
}
}
}

 // Disabling task preference, in task group child task
 _ =awaitwithTaskGroup(of:Int.self){ group in
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))

 group.addTask(executorPreference: secondExecutor){
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.onQueue(secondExecutor.queue))
returnawaitwithTaskGroup(of:Int.self){ inner in
 inner.addTask(executorPreference: globalConcurrentExecutor){
 // disabled the preference
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
return42
}
returnawait inner.next()!
}
}

 _ = group.addTaskUnlessCancelled(executorPreference: secondExecutor){
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.onQueue(secondExecutor.queue))
returnawaitwithTaskGroup(of:Int.self){ inner in
 inner.addTask(executorPreference: globalConcurrentExecutor){
 // disabled the preference
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
return42
}
returnawait inner.next()!
}
}

 group.addTask(executorPreference: secondExecutor){
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.onQueue(secondExecutor.queue))
awaitwithDiscardingTaskGroup{ inner in
 inner.addTask(executorPreference: globalConcurrentExecutor){
 // disabled the preference
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
}
 _ = inner.addTaskUnlessCancelled(executorPreference: globalConcurrentExecutor){
 // disabled the preference
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
}
}
return0
}

 group.addTask(executorPreference: secondExecutor){
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.onQueue(secondExecutor.queue))
try!awaitwithThrowingDiscardingTaskGroup{ inner in
 inner.addTask(executorPreference: globalConcurrentExecutor){
 // disabled the preference
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
}
 _ = inner.addTaskUnlessCancelled(executorPreference: globalConcurrentExecutor){
 // disabled the preference
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
}
}
return0
}

returnawait group.next()!
}
}

func testAsyncLet(_ firstExecutor:MyTaskExecutor,
 _ secondExecutor:MyTaskExecutor)async{
awaitwithTaskExecutorPreference(firstExecutor){
asyncletfirst:Int={
dispatchPrecondition(condition:.onQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))
return12
}()
 _ =await first
}
awaitwithTaskExecutorPreference(firstExecutor){
awaitwithTaskExecutorPreference(secondExecutor){
asyncletfirst:Int={
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.onQueue(secondExecutor.queue))
return12
}()
 _ =await first
}
}

awaitwithTaskExecutorPreference(firstExecutor){
awaitwithTaskExecutorPreference(secondExecutor){
asyncletfirst:Int={
asyncletfirstInside:Int={
dispatchPrecondition(condition:.notOnQueue(firstExecutor.queue))
dispatchPrecondition(condition:.onQueue(secondExecutor.queue))
return12
}()
returnawait firstInside
}()
 _ =await first
}
}
}

func testGroupAsyncLet(_ firstExecutor:MyTaskExecutor,
 _ secondExecutor:MyTaskExecutor)async{
awaitwithTaskGroup(of:Void.self){ group in
 group.addTask(executorPreference: firstExecutor){
dispatchPrecondition(condition:.onQueue(firstExecutor.queue))
dispatchPrecondition(condition:.notOnQueue(secondExecutor.queue))

asyncletfirst:()=expect(firstExecutor)
 _ =await first

awaitwithTaskExecutorPreference(secondExecutor){
asyncletsecond:()=expect(secondExecutor)
 _ =await second
}
}
}
}

func expect(_ expected:MyTaskExecutor){
dispatchPrecondition(condition:.onQueue(expected.queue))
}

@mainstructMain{

staticfunc main()async{
letfirstExecutor=MyTaskExecutor(queue:DispatchQueue(label:"first"))
letsecondExecutor=MyTaskExecutor(queue:DispatchQueue(label:"second"))

awaittestTaskGroup(firstExecutor, secondExecutor)

awaittestAsyncLet(firstExecutor, secondExecutor)

awaittestGroupAsyncLet(firstExecutor, secondExecutor)
}
}