142 lines
5.7 KiB
Swift
142 lines
5.7 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the SwiftNIO open source project
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//
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// Copyright (c) 2017-2021 Apple Inc. and the SwiftNIO project authors
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// Licensed under Apache License v2.0
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//
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// See LICENSE.txt for license information
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// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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//===----------------------------------------------------------------------===//
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// This is a companion to System.swift that provides only Linux specials: either things that exist
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// only on Linux, or things that have Linux-specific extensions.
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#if os(Linux) || os(Android)
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import CNIOLinux
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internal enum TimerFd {
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internal static let TFD_CLOEXEC = CNIOLinux.TFD_CLOEXEC
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internal static let TFD_NONBLOCK = CNIOLinux.TFD_NONBLOCK
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@inline(never)
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internal static func timerfd_settime(fd: CInt, flags: CInt, newValue: UnsafePointer<itimerspec>, oldValue: UnsafeMutablePointer<itimerspec>?) throws {
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_ = try syscall(blocking: false) {
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CNIOLinux.timerfd_settime(fd, flags, newValue, oldValue)
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}
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}
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@inline(never)
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internal static func timerfd_create(clockId: CInt, flags: CInt) throws -> CInt {
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return try syscall(blocking: false) {
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CNIOLinux.timerfd_create(clockId, flags)
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}.result
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}
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}
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internal enum EventFd {
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internal static let EFD_CLOEXEC = CNIOLinux.EFD_CLOEXEC
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internal static let EFD_NONBLOCK = CNIOLinux.EFD_NONBLOCK
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internal typealias eventfd_t = CNIOLinux.eventfd_t
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@inline(never)
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internal static func eventfd_write(fd: CInt, value: UInt64) throws -> CInt {
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return try syscall(blocking: false) {
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CNIOLinux.eventfd_write(fd, value)
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}.result
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}
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@inline(never)
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internal static func eventfd_read(fd: CInt, value: UnsafeMutablePointer<UInt64>) throws -> CInt {
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return try syscall(blocking: false) {
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CNIOLinux.eventfd_read(fd, value)
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}.result
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}
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@inline(never)
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internal static func eventfd(initval: CUnsignedInt, flags: CInt) throws -> CInt {
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return try syscall(blocking: false) {
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// Note: Please do _not_ remove the `numericCast`, this is to allow compilation in Ubuntu 14.04 and
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// other Linux distros which ship a glibc from before this commit:
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// https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=69eb9a183c19e8739065e430758e4d3a2c5e4f1a
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// which changes the first argument from `CInt` to `CUnsignedInt` (from Sat, 20 Sep 2014).
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CNIOLinux.eventfd(numericCast(initval), flags)
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}.result
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}
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}
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internal enum Epoll {
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internal typealias epoll_event = CNIOLinux.epoll_event
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internal static let EPOLL_CTL_ADD: CInt = numericCast(CNIOLinux.EPOLL_CTL_ADD)
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internal static let EPOLL_CTL_MOD: CInt = numericCast(CNIOLinux.EPOLL_CTL_MOD)
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internal static let EPOLL_CTL_DEL: CInt = numericCast(CNIOLinux.EPOLL_CTL_DEL)
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#if os(Android)
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internal static let EPOLLIN: CUnsignedInt = 1 //numericCast(CNIOLinux.EPOLLIN)
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internal static let EPOLLOUT: CUnsignedInt = 4 //numericCast(CNIOLinux.EPOLLOUT)
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internal static let EPOLLERR: CUnsignedInt = 8 // numericCast(CNIOLinux.EPOLLERR)
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internal static let EPOLLRDHUP: CUnsignedInt = 8192 //numericCast(CNIOLinux.EPOLLRDHUP)
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internal static let EPOLLHUP: CUnsignedInt = 16 //numericCast(CNIOLinux.EPOLLHUP)
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internal static let EPOLLET: CUnsignedInt = 2147483648 //numericCast(CNIOLinux.EPOLLET)
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#else
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internal static let EPOLLIN: CUnsignedInt = numericCast(CNIOLinux.EPOLLIN.rawValue)
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internal static let EPOLLOUT: CUnsignedInt = numericCast(CNIOLinux.EPOLLOUT.rawValue)
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internal static let EPOLLERR: CUnsignedInt = numericCast(CNIOLinux.EPOLLERR.rawValue)
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internal static let EPOLLRDHUP: CUnsignedInt = numericCast(CNIOLinux.EPOLLRDHUP.rawValue)
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internal static let EPOLLHUP: CUnsignedInt = numericCast(CNIOLinux.EPOLLHUP.rawValue)
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internal static let EPOLLET: CUnsignedInt = numericCast(CNIOLinux.EPOLLET.rawValue)
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#endif
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internal static let ENOENT: CUnsignedInt = numericCast(CNIOLinux.ENOENT)
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@inline(never)
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internal static func epoll_create(size: CInt) throws -> CInt {
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return try syscall(blocking: false) {
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CNIOLinux.epoll_create(size)
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}.result
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}
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@inline(never)
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@discardableResult
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internal static func epoll_ctl(epfd: CInt, op: CInt, fd: CInt, event: UnsafeMutablePointer<epoll_event>) throws -> CInt {
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return try syscall(blocking: false) {
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CNIOLinux.epoll_ctl(epfd, op, fd, event)
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}.result
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}
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@inline(never)
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internal static func epoll_wait(epfd: CInt, events: UnsafeMutablePointer<epoll_event>, maxevents: CInt, timeout: CInt) throws -> CInt {
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return try syscall(blocking: false) {
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CNIOLinux.epoll_wait(epfd, events, maxevents, timeout)
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}.result
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}
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}
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internal enum Linux {
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#if os(Android)
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static let SOCK_CLOEXEC = Glibc.SOCK_CLOEXEC
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static let SOCK_NONBLOCK = Glibc.SOCK_NONBLOCK
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#else
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static let SOCK_CLOEXEC = CInt(bitPattern: Glibc.SOCK_CLOEXEC.rawValue)
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static let SOCK_NONBLOCK = CInt(bitPattern: Glibc.SOCK_NONBLOCK.rawValue)
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#endif
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@inline(never)
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internal static func accept4(descriptor: CInt,
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addr: UnsafeMutablePointer<sockaddr>?,
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len: UnsafeMutablePointer<socklen_t>?,
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flags: CInt) throws -> CInt? {
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guard case let .processed(fd) = try syscall(blocking: true, {
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CNIOLinux.CNIOLinux_accept4(descriptor, addr, len, flags)
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}) else {
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return nil
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}
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return fd
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}
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}
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#endif
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