mirror of
https://github.com/apple/container.git
synced 2026-09-12 10:45:42 +00:00
Dmitry Kovba
41d41e4ffe
- The `@SendableProperty` macro now checks for supported types to prevent a misuse with unsupported types like structs, dictionaries, and arrays - The new `@SendablePropertyUnchecked` can be used with classes and enums
42 lines
1.6 KiB
Swift
42 lines
1.6 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025 Apple Inc. and the Containerization project authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//===----------------------------------------------------------------------===//
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// `Synchronization` will be automatically imported with `SendableProperty`.
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@_exported import Synchronization
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/// A synchronization primitive that protects shared mutable state via mutual exclusion.
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public final class Synchronized<T>: Sendable {
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private let lock: Mutex<State>
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private struct State: @unchecked Sendable {
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var value: T
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}
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/// Creates a new instance.
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/// - Parameter value: The initial value.
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public init(_ value: T) {
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self.lock = Mutex(State(value: value))
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}
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/// Calls the given closure after acquiring the lock and returns its value.
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/// - Parameter body: The body of code to execute while the lock is held.
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public func withLock<R>(_ body: (inout T) throws -> R) rethrows -> R {
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try lock.withLock { state in
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try body(&state.value)
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}
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}
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}
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