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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Async Algorithms open source project
//
// Copyright (c) 2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
import _CAsyncSequenceValidationSupport
#if canImport(Darwin)
import Darwin
#elseif canImport(Glibc)
import Glibc
#elseif canImport(WinSDK)
#error("TODO: Port TaskDriver threading to windows")
#endif
#if canImport(Darwin)
func start_thread(_ raw: UnsafeMutableRawPointer) -> UnsafeMutableRawPointer? {
Unmanaged<TaskDriver>.fromOpaque(raw).takeRetainedValue().run()
return nil
}
#elseif canImport(Glibc)
func start_thread(_ raw: UnsafeMutableRawPointer?) -> UnsafeMutableRawPointer? {
Unmanaged<TaskDriver>.fromOpaque(raw!).takeRetainedValue().run()
return nil
}
#elseif canImport(WinSDK)
#error("TODO: Port TaskDriver threading to windows")
#endif
final class TaskDriver {
let work: (TaskDriver) -> Void
let queue: WorkQueue
#if canImport(Darwin)
var thread: pthread_t?
#elseif canImport(Glibc)
var thread = pthread_t()
#elseif canImport(WinSDK)
#error("TODO: Port TaskDriver threading to windows")
#endif
init(queue: WorkQueue, _ work: @escaping (TaskDriver) -> Void) {
self.queue = queue
self.work = work
}
func start() {
#if canImport(Darwin) || canImport(Glibc)
pthread_create(&thread, nil, start_thread,
Unmanaged.passRetained(self).toOpaque())
#elseif canImport(WinSDK)
#error("TODO: Port TaskDriver threading to windows")
#endif
}
func run() {
#if canImport(Darwin)
pthread_setname_np("Validation Diagram Clock Driver")
#endif
work(self)
}
func join() {
#if canImport(Darwin)
pthread_join(thread!, nil)
#elseif canImport(Glibc)
pthread_join(thread, nil)
#elseif canImport(WinSDK)
#error("TODO: Port TaskDriver threading to windows")
#endif
}
func enqueue(_ job: JobRef) {
let job = Job(job)
queue.enqueue(AsyncSequenceValidationDiagram.Context.currentJob) {
let previous = AsyncSequenceValidationDiagram.Context.currentJob
AsyncSequenceValidationDiagram.Context.currentJob = job
job.execute()
AsyncSequenceValidationDiagram.Context.currentJob = previous
}
}
}
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