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/*
This source file is part of the Swift.org open source project
Copyright (c) 2020 Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See http://swift.org/LICENSE.txt for license information
See http://swift.org/CONTRIBUTORS.txt for Swift project authors
*/
import Foundation
public enum TracingEventType: String, Codable, Sendable {
case asyncBegin
case asyncEnd
}
public protocol TracingEventProtocol {
/// The category of the event.
var cat: String { get }
/// The name of the event.
var name: String { get }
/// The free form id of the event.
var id: String { get }
/// The phase of the event.
var ph: TracingEventType { get }
/// The process id of the process where the event occured.
var pid: Int { get }
/// The thread id of the process where the event occured.
var tid: Int { get }
/// The timestamp of the event.
var ts: Int { get }
/// The start time of the process where the event occured.
var startTs: Int { get }
init(
cat: String,
name: String,
id: String,
ph: TracingEventType,
pid: Int,
tid: Int,
ts: Int,
startTs: Int
)
}
public protocol TracingCollectionProtocol: Sendable {
var events: [TracingEventProtocol] { get set }
init(_ events: [TracingEventProtocol])
}
extension TracingCollectionProtocol {
public mutating func append(_ tracingCollection: TracingCollectionProtocol) {
self.events.append(contentsOf: tracingCollection.events)
}
}
public struct TracingEvent: TracingEventProtocol, Codable, Sendable {
public let cat: String
public let name: String
public let id: String
public let ph: TracingEventType
public let pid: Int
public let tid: Int
public let ts: Int
public let startTs: Int
#if canImport(Darwin)
public init(
cat: String,
name: String,
id: String,
ph: TracingEventType,
pid: Int = Int(getpid()),
tid: Int = Int(pthread_mach_thread_np(pthread_self())),
ts: Int = Int(DispatchTime.now().uptimeNanoseconds),
startTs: Int = 0
) {
self.cat = cat
self.name = name
self.id = id
self.ph = ph
self.pid = pid
self.tid = tid
self.ts = ts
self.startTs = startTs
}
#elseif canImport(Glibc) || canImport(Android)
public init(
cat: String,
name: String,
id: String,
ph: TracingEventType,
pid: Int = Int(getpid()),
tid: Int = 1,
ts: Int = Int(DispatchTime.now().uptimeNanoseconds),
startTs: Int = 0
) {
self.cat = cat
self.name = name
self.id = id
self.ph = ph
self.pid = pid
self.tid = tid
self.ts = ts
self.startTs = startTs
}
#else
public init(
cat: String,
name: String,
id: String,
ph: TracingEventType,
pid: Int = 1,
tid: Int = 1,
ts: Int = Int(DispatchTime.now().uptimeNanoseconds),
startTs: Int = 0
) {
self.cat = cat
self.name = name
self.id = id
self.ph = ph
self.pid = pid
self.tid = tid
self.ts = ts
self.startTs = startTs
}
#endif
}
public final class TracingCollection {
private let lock = NSLock()
private var _events: [TracingEventProtocol] = []
public var events: [TracingEventProtocol] {
get {
return self.lock.withLock {
self._events
}
}
set {
self.lock.withLock {
self._events = newValue
}
}
}
public required init(_ events: [TracingEventProtocol] = []) {
self.events = events
}
}
#if compiler(>=5.7)
extension TracingCollection: @unchecked /* because self-locked */ Sendable {}
extension TracingCollection: TracingCollectionProtocol {}
#else
extension TracingCollection: UnsafeSendable {}
extension TracingCollection: TracingCollectionProtocol {}
#endif
extension Context {
public static func withTracing(_ collection: TracingCollectionProtocol) -> Context {
return Context(dictionaryLiteral: (ObjectIdentifier(TracingCollectionProtocol.self), collection as Any))
}
public mutating func enrichWithTracing(_ collection: TracingCollectionProtocol) -> Context {
self[ObjectIdentifier(TracingCollectionProtocol.self)] = collection
return self
}
public var tracing: TracingCollectionProtocol? {
get {
return self[ObjectIdentifier(TracingCollectionProtocol.self), as: TracingCollectionProtocol.self]
}
set {
self[ObjectIdentifier(TracingCollectionProtocol.self)] = newValue
}
}
}
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