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#if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
import Darwin
#elseif os(Linux) || os(FreeBSD) || os(Android)
import CSystem
import Glibc
#elseif os(Windows)
import CSystem
import ucrt
#else
#error("Unsupported Platform")
#endif
import SystemPackage
@frozen
public struct Clock: RawRepresentable {
@_alwaysEmitIntoClient
public var rawValue: CInterop.ClockId
@_alwaysEmitIntoClient
public init(rawValue: CInterop.ClockId) { self.rawValue = rawValue }
}
extension Clock {
#if os(Linux)
@_alwaysEmitIntoClient
public static var boottime: Clock { Clock(rawValue: CLOCK_BOOTTIME) }
#endif
#if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
@_alwaysEmitIntoClient
public static var rawMonotonic: Clock { Clock(rawValue: _CLOCK_MONOTONIC_RAW) }
#endif
#if os(macOS) || os(iOS) || os(watchOS) || os(tvOS) || os(Linux) || os(OpenBSD) || os(FreeBSD) || os(WASI)
@_alwaysEmitIntoClient
public static var monotonic: Clock { Clock(rawValue: _CLOCK_MONOTONIC) }
#endif
#if os(OpenBSD) || os(FreeBSD) || os(WASI)
@_alwaysEmitIntoClient
public static var uptime: Clock { Clock(rawValue: _CLOCK_UPTIME) }
#endif
#if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
@_alwaysEmitIntoClient
public static var rawUptime: Clock { Clock(rawValue: _CLOCK_UPTIME_RAW) }
#endif
@_alwaysEmitIntoClient
public func currentTime() throws -> Clock.TimeSpec {
try _currentTime().get()
}
@usableFromInline
internal func _currentTime() -> Result<Clock.TimeSpec, Errno> {
var timeSpec = CInterop.TimeSpec()
return nothingOrErrno(retryOnInterrupt: false) {
system_clock_gettime(self.rawValue, &timeSpec)
}
.map { Clock.TimeSpec(rawValue: timeSpec) }
}
@_alwaysEmitIntoClient
public func resolution() throws -> Clock.TimeSpec {
try _currentTime().get()
}
@usableFromInline
internal func _resolution() -> Result<Clock.TimeSpec, Errno> {
var timeSpec = CInterop.TimeSpec()
return nothingOrErrno(retryOnInterrupt: false) {
system_clock_getres(self.rawValue, &timeSpec)
}
.map { Clock.TimeSpec(rawValue: timeSpec) }
}
}
extension Clock {
@frozen
public struct TimeSpec: RawRepresentable {
@_alwaysEmitIntoClient
public var rawValue: CInterop.TimeSpec
@_alwaysEmitIntoClient
public var seconds: Int { rawValue.tv_sec }
@_alwaysEmitIntoClient
public var nanoseconds: Int { rawValue.tv_nsec }
@_alwaysEmitIntoClient
public init(rawValue: CInterop.TimeSpec) {
self.rawValue = rawValue
}
@_alwaysEmitIntoClient
public init(seconds: Int, nanoseconds: Int) {
self.init(rawValue: CInterop.TimeSpec(tv_sec: seconds, tv_nsec: nanoseconds))
}
@_alwaysEmitIntoClient
public static var now: TimeSpec {
return TimeSpec(rawValue: CInterop.TimeSpec(tv_sec: 0, tv_nsec: Int(_UTIME_NOW)))
}
@_alwaysEmitIntoClient
public static var omit: TimeSpec {
return TimeSpec(rawValue: CInterop.TimeSpec(tv_sec: 0, tv_nsec: Int(_UTIME_OMIT)))
}
}
}
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