Files
container/Sources/ContainerizationOS/Syscall.swift
T
Danny Canter 6bc4bf5124 Source code documentation updates (#9)
This change adds documentation to quite a few existing public types that
didn't have a blurb before.

Additionally, this fixes a couple things that I think either didn't make
sense when going to document them:
- Rename ConnectionStream to VsockConnectionStream. This type only
functions for vsock connections.
- Deletes NsLock+Closure. This was not used anywhere.
- Rename ContainerizationOCI/Config.swift to ImageConfig.swift.

Signed-off-by: Danny Canter <danny_canter@apple.com>
2025-06-05 16:16:18 -07:00

40 lines
1.3 KiB
Swift

//===----------------------------------------------------------------------===//
// Copyright © 2025 Apple Inc. and the containerization project authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//===----------------------------------------------------------------------===//
#if canImport(Musl)
import Musl
#elseif canImport(Glibc)
import Glibc
#elseif canImport(Darwin)
import Darwin
#else
#error("retryingSyscall not supported on this platform.")
#endif
/// Helper type to deal with running system calls.
public struct Syscall {
/// Retry a syscall on EINTR.
public static func retrying<T: FixedWidthInteger>(_ closure: () -> T) -> T {
while true {
let res = closure()
if res == -1 && errno == EINTR {
continue
}
return res
}
}
}