31 lines
1.2 KiB
Swift
31 lines
1.2 KiB
Swift
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This source file is part of the SwiftNIO open source project
|
|
//
|
|
// Copyright (c) 2017-2021 Apple Inc. and the SwiftNIO project authors
|
|
// Licensed under Apache License v2.0
|
|
//
|
|
// See LICENSE.txt for license information
|
|
// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
import NIOCore
|
|
|
|
extension FileDescriptor {
|
|
internal static func setNonBlocking(fileDescriptor: CInt) throws {
|
|
let flags = try Posix.fcntl(descriptor: fileDescriptor, command: F_GETFL, value: 0)
|
|
do {
|
|
let ret = try Posix.fcntl(descriptor: fileDescriptor, command: F_SETFL, value: flags | O_NONBLOCK)
|
|
assert(ret == 0, "unexpectedly, fcntl(\(fileDescriptor), F_SETFL, \(flags) | O_NONBLOCK) returned \(ret)")
|
|
} catch let error as IOError {
|
|
if error.errnoCode == EINVAL {
|
|
// Darwin seems to sometimes do this despite the docs claiming it can't happen
|
|
throw NIOFcntlFailedError()
|
|
}
|
|
throw error
|
|
}
|
|
}
|
|
}
|