-
Notifications
You must be signed in to change notification settings - Fork 2
/
Queue.swift
91 lines (76 loc) · 2.3 KB
/
Queue.swift
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
import Foundation
public struct Queue: Equatable {
public enum Attributes: Equatable {
case concurrent
case serial
}
public enum Flags: Equatable {
case absent
case barrier
}
private enum Kind: Equatable {
case main
case custom(label: String,
qos: DispatchQoS = .default,
attributes: Attributes = .concurrent)
case background
case utility
case `default`
case userInitiated
case userInteractive
}
public static var main: Self {
return Queue(kind: .main,
sdk: .main)
}
public static var background: Self {
return Queue(kind: .background,
sdk: .global(qos: .background))
}
public static var utility: Self {
return Queue(kind: .utility,
sdk: .global(qos: .utility))
}
public static var `default`: Self {
return Queue(kind: .default,
sdk: .global(qos: .default))
}
public static var userInitiated: Self {
return Queue(kind: .userInitiated,
sdk: .global(qos: .userInitiated))
}
public static var userInteractive: Self {
return Queue(kind: .userInteractive,
sdk: .global(qos: .userInteractive))
}
public static func custom(label: String,
qos: DispatchQoS = .default,
attributes: Attributes = .concurrent) -> Self {
return Queue(kind: .custom(label: label,
qos: qos,
attributes: attributes),
sdk: .init(label: label,
qos: qos,
attributes: attributes.toSDK()))
}
public let sdk: DispatchQueue
private let kind: Kind
internal var isMain: Bool {
return kind == .main
}
private init(kind: Kind,
sdk: DispatchQueue) {
self.kind = kind
self.sdk = sdk
}
}
private extension Queue.Attributes {
func toSDK() -> DispatchQueue.Attributes {
switch self {
case .concurrent:
return .concurrent
case .serial:
return []
}
}
}