libdispatch-703.1.4.tar.gz

[apple/libdispatch.git] / src / swift / Time.swift

diff --git a/src/swift/Time.swift b/src/swift/Time.swift
new file mode 100644 (file)
index 0000000..76a6979
--- /dev/null
+++ b/src/swift/Time.swift
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2016 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 the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+// dispatch/time.h
+// DISPATCH_TIME_NOW: ok
+// DISPATCH_TIME_FOREVER: ok
+
+import CDispatch
+
+public struct DispatchTime {
+       public let rawValue: dispatch_time_t
+
+       public static func now() -> DispatchTime {
+               let t = CDispatch.dispatch_time(0, 0)
+               return DispatchTime(rawValue: t)
+       }
+
+       public static let distantFuture = DispatchTime(rawValue: ~0)
+
+       private init(rawValue: dispatch_time_t) { 
+               self.rawValue = rawValue
+       }
+}
+
+public struct DispatchWallTime {
+       public let rawValue: dispatch_time_t
+
+       public static func now() -> DispatchWallTime {
+               return DispatchWallTime(rawValue: CDispatch.dispatch_walltime(nil, 0))
+       }
+
+       public static let distantFuture = DispatchWallTime(rawValue: ~0)
+
+       private init(rawValue: dispatch_time_t) {
+               self.rawValue = rawValue
+       }
+
+       public init(time: timespec) {
+               var t = time
+               self.rawValue = CDispatch.dispatch_walltime(&t, 0)
+       }
+}
+
+@available(*, deprecated, renamed: "DispatchWallTime")
+public typealias DispatchWalltime = DispatchWallTime
+
+public enum DispatchTimeInterval {
+       case seconds(Int)
+       case milliseconds(Int)
+       case microseconds(Int)
+       case nanoseconds(Int)
+
+       internal var rawValue: UInt64 {
+               switch self {
+               case .seconds(let s): return UInt64(s) * NSEC_PER_SEC
+               case .milliseconds(let ms): return UInt64(ms) * NSEC_PER_MSEC
+               case .microseconds(let us): return UInt64(us) * NSEC_PER_USEC
+               case .nanoseconds(let ns): return UInt64(ns)
+               }
+       }
+}
+
+public func +(time: DispatchTime, interval: DispatchTimeInterval) -> DispatchTime {
+       let t = CDispatch.dispatch_time(time.rawValue, Int64(interval.rawValue))
+       return DispatchTime(rawValue: t)
+}
+
+public func -(time: DispatchTime, interval: DispatchTimeInterval) -> DispatchTime {
+       let t = CDispatch.dispatch_time(time.rawValue, -Int64(interval.rawValue))
+       return DispatchTime(rawValue: t)
+}
+
+public func +(time: DispatchTime, seconds: Double) -> DispatchTime {
+       let t = CDispatch.dispatch_time(time.rawValue, Int64(seconds * Double(NSEC_PER_SEC)))
+       return DispatchTime(rawValue: t)
+}
+
+public func -(time: DispatchTime, seconds: Double) -> DispatchTime {
+       let t = CDispatch.dispatch_time(time.rawValue, Int64(-seconds * Double(NSEC_PER_SEC)))
+       return DispatchTime(rawValue: t)
+}
+
+public func +(time: DispatchWallTime, interval: DispatchTimeInterval) -> DispatchWallTime {
+       let t = CDispatch.dispatch_time(time.rawValue, Int64(interval.rawValue))
+       return DispatchWallTime(rawValue: t)
+}
+
+public func -(time: DispatchWallTime, interval: DispatchTimeInterval) -> DispatchWallTime {
+       let t = CDispatch.dispatch_time(time.rawValue, -Int64(interval.rawValue))
+       return DispatchWallTime(rawValue: t)
+}
+
+public func +(time: DispatchWallTime, seconds: Double) -> DispatchWallTime {
+       let t = CDispatch.dispatch_time(time.rawValue, Int64(seconds * Double(NSEC_PER_SEC)))
+       return DispatchWallTime(rawValue: t)
+}
+
+public func -(time: DispatchWallTime, seconds: Double) -> DispatchWallTime {
+       let t = CDispatch.dispatch_time(time.rawValue, Int64(-seconds * Double(NSEC_PER_SEC)))
+       return DispatchWallTime(rawValue: t)
+}