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Merge pull request #1429 from ahoppen/atomics_on_heap
Heap allocate our atomics
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Original file line number | Diff line number | Diff line change |
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//===----------------------------------------------------------------------===// | ||
// | ||
// This source file is part of the Swift.org open source project | ||
// | ||
// Copyright (c) 2014 - 2024 Apple Inc. and the Swift project authors | ||
// Licensed under Apache License v2.0 with Runtime Library Exception | ||
// | ||
// See https://swift.org/LICENSE.txt for license information | ||
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors | ||
// | ||
//===----------------------------------------------------------------------===// | ||
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import CAtomics | ||
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#if compiler(>=6.2) | ||
#warning("We should be able to use atomics in the stdlib when we raise the deployment target to require Swift 6") | ||
#endif | ||
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public class AtomicBool { | ||
private let atomic: UnsafeMutablePointer<CAtomicUInt32> | ||
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public init(initialValue: Bool) { | ||
self.atomic = atomic_uint32_create(initialValue ? 1 : 0) | ||
} | ||
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deinit { | ||
atomic_uint32_destroy(atomic) | ||
} | ||
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public var value: Bool { | ||
get { | ||
atomic_uint32_get(atomic) != 0 | ||
} | ||
set { | ||
atomic_uint32_set(atomic, newValue ? 1 : 0) | ||
} | ||
} | ||
} | ||
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public class AtomicUInt8 { | ||
private let atomic: UnsafeMutablePointer<CAtomicUInt32> | ||
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public init(initialValue: UInt8) { | ||
self.atomic = atomic_uint32_create(UInt32(initialValue)) | ||
} | ||
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deinit { | ||
atomic_uint32_destroy(atomic) | ||
} | ||
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public var value: UInt8 { | ||
get { | ||
UInt8(atomic_uint32_get(atomic)) | ||
} | ||
set { | ||
atomic_uint32_set(atomic, UInt32(newValue)) | ||
} | ||
} | ||
} | ||
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public class AtomicUInt32 { | ||
private let atomic: UnsafeMutablePointer<CAtomicUInt32> | ||
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public init(initialValue: UInt32) { | ||
self.atomic = atomic_uint32_create(initialValue) | ||
} | ||
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public var value: UInt32 { | ||
get { | ||
atomic_uint32_get(atomic) | ||
} | ||
set { | ||
atomic_uint32_set(atomic, newValue) | ||
} | ||
} | ||
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deinit { | ||
atomic_uint32_destroy(atomic) | ||
} | ||
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public func fetchAndIncrement() -> UInt32 { | ||
return atomic_uint32_fetch_and_increment(atomic) | ||
} | ||
} |
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