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|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Atomics open source project
//
// Copyright (c) 2020 - 2023 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
//
//===----------------------------------------------------------------------===//
%{
from gyb_utils import autogenerated_warning
atomicTypes = [
"UnsafeRawPointer",
"UnsafeMutableRawPointer",
"UnsafePointer",
"UnsafeMutablePointer",
"Unmanaged",
]
}%
${autogenerated_warning()}
#if !ATOMICS_NATIVE_BUILTINS
import _AtomicsShims
#endif
% for swiftType in atomicTypes:
extension ${swiftType}: AtomicValue {
@frozen
public struct AtomicRepresentation {
public typealias Value = ${swiftType}
@usableFromInline
internal typealias _Storage = _AtomicIntStorage
@usableFromInline
internal let _storage: _Storage
@_transparent @_alwaysEmitIntoClient
public init(_ value: Value) {
#if ATOMICS_NATIVE_BUILTINS
_storage = Self._encode(value)
#else
_storage = _sa_prepare_Int(Self._encode(value))
#endif
}
@_transparent @_alwaysEmitIntoClient
public func dispose() -> Value {
#if ATOMICS_NATIVE_BUILTINS
return Self._decode(_storage)
#else
return Self._decode(_sa_dispose_Int(_storage))
#endif
}
}
}
extension ${swiftType}.AtomicRepresentation {
@_transparent @_alwaysEmitIntoClient
@usableFromInline
internal static func _extract(
_ ptr: UnsafeMutablePointer<Self>
) -> UnsafeMutablePointer<_Storage> {
// `Self` is layout-compatible with its only stored property.
return UnsafeMutableRawPointer(ptr)
.assumingMemoryBound(to: _Storage.self)
}
}
#if ATOMICS_NATIVE_BUILTINS
extension ${swiftType}.AtomicRepresentation {
@_transparent @_alwaysEmitIntoClient
internal static func _decode(_ storage: _Storage) -> Value {
let bits = Int(storage._value)
% if swiftType == "Unmanaged":
return Unmanaged.fromOpaque(UnsafeRawPointer(bitPattern: bits)!)
% else:
return ${swiftType}(bitPattern: bits)!
% end
}
@_transparent @_alwaysEmitIntoClient
internal static func _encode(_ value: Value) -> _Storage {
% if swiftType == "Unmanaged":
let bits = Int(bitPattern: value.toOpaque())
% else:
let bits = Int(bitPattern: value)
% end
return _Storage(bits._value)
}
}
#else
extension ${swiftType}.AtomicRepresentation {
@_transparent @_alwaysEmitIntoClient
internal static func _decode(_ bits: Int) -> Value {
% if swiftType == "Unmanaged":
return Unmanaged.fromOpaque(UnsafeRawPointer(bitPattern: bits)!)
% else:
return ${swiftType}(bitPattern: bits)!
% end
}
@_transparent @_alwaysEmitIntoClient
internal static func _encode(_ value: Value) -> Int {
% if swiftType == "Unmanaged":
return Int(bitPattern: value.toOpaque())
% else:
return Int(bitPattern: value)
% end
}
}
#endif
extension ${swiftType}.AtomicRepresentation: AtomicStorage {
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicLoad(
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicLoadOrdering
) -> Value {
_decode(_extract(pointer)._atomicLoad(ordering: ordering))
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicStore(
_ desired: Value,
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicStoreOrdering
) {
_extract(pointer)._atomicStore(_encode(desired), ordering: ordering)
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicExchange(
_ desired: Value,
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicUpdateOrdering
) -> Value {
let v = _extract(pointer)._atomicExchange(
_encode(desired), ordering: ordering)
return _decode(v)
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicCompareExchange(
expected: Value,
desired: Value,
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicUpdateOrdering
) -> (exchanged: Bool, original: Value) {
let (exchanged, original) = _extract(pointer)._atomicCompareExchange(
expected: _encode(expected),
desired: _encode(desired),
ordering: ordering)
return (exchanged, _decode(original))
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicCompareExchange(
expected: Value,
desired: Value,
at pointer: UnsafeMutablePointer<Self>,
successOrdering: AtomicUpdateOrdering,
failureOrdering: AtomicLoadOrdering
) -> (exchanged: Bool, original: Value) {
let (exchanged, original) = _extract(pointer)._atomicCompareExchange(
expected: _encode(expected),
desired: _encode(desired),
successOrdering: successOrdering,
failureOrdering: failureOrdering)
return (exchanged, _decode(original))
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicWeakCompareExchange(
expected: Value,
desired: Value,
at pointer: UnsafeMutablePointer<Self>,
successOrdering: AtomicUpdateOrdering,
failureOrdering: AtomicLoadOrdering
) -> (exchanged: Bool, original: Value) {
let (exchanged, original) = _extract(pointer)._atomicWeakCompareExchange(
expected: _encode(expected),
desired: _encode(desired),
successOrdering: successOrdering,
failureOrdering: failureOrdering)
return (exchanged, _decode(original))
}
}
% end
% for swiftType in atomicTypes:
extension ${swiftType}: AtomicOptionalWrappable {
@frozen
public struct AtomicOptionalRepresentation {
public typealias Value = ${swiftType}?
@usableFromInline
internal typealias _Storage = _AtomicIntStorage
@usableFromInline
internal let _storage: _Storage
@inline(__always) @_alwaysEmitIntoClient
public init(_ value: Value) {
#if ATOMICS_NATIVE_BUILTINS
_storage = Self._encode(value)
#else
_storage = _sa_prepare_Int(Self._encode(value))
#endif
}
@inline(__always) @_alwaysEmitIntoClient
public func dispose() -> Value {
#if ATOMICS_NATIVE_BUILTINS
Self._decode(_storage)
#else
return Self._decode(_sa_dispose_Int(_storage))
#endif
}
}
}
extension ${swiftType}.AtomicOptionalRepresentation {
@_transparent @_alwaysEmitIntoClient
@usableFromInline
internal static func _extract(
_ ptr: UnsafeMutablePointer<Self>
) -> UnsafeMutablePointer<_Storage> {
// `Self` is layout-compatible with its only stored property.
return UnsafeMutableRawPointer(ptr)
.assumingMemoryBound(to: _Storage.self)
}
}
#if ATOMICS_NATIVE_BUILTINS
extension ${swiftType}.AtomicOptionalRepresentation {
@_transparent @_alwaysEmitIntoClient
internal static func _decode(_ storage: _Storage) -> Value {
let bits = Int(storage._value)
% if swiftType == "Unmanaged":
guard let opaque = UnsafeRawPointer(bitPattern: bits) else {
return nil
}
return Unmanaged.fromOpaque(opaque)
% else:
return ${swiftType}(bitPattern: bits)
% end
}
@_transparent @_alwaysEmitIntoClient
internal static func _encode(_ value: Value) -> _Storage {
% if swiftType == "Unmanaged":
let bits = value.map { Int(bitPattern: $0.toOpaque())} ?? 0
% else:
let bits = value.map { Int(bitPattern: $0) } ?? 0
% end
return _Storage(bits._value)
}
}
#else
extension ${swiftType}.AtomicOptionalRepresentation {
@_transparent @_alwaysEmitIntoClient
internal static func _decode(_ bits: Int) -> Value {
% if swiftType == "Unmanaged":
guard let opaque = UnsafeRawPointer(bitPattern: bits) else {
return nil
}
return Unmanaged.fromOpaque(opaque)
% else:
return ${swiftType}(bitPattern: bits)
% end
}
@_transparent @_alwaysEmitIntoClient
internal static func _encode(_ value: Value) -> Int {
% if swiftType == "Unmanaged":
return value.map { Int(bitPattern: $0.toOpaque())} ?? 0
% else:
return value.map { Int(bitPattern: $0) } ?? 0
% end
}
}
#endif
extension ${swiftType}.AtomicOptionalRepresentation: AtomicStorage {
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicLoad(
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicLoadOrdering
) -> Value {
_decode(_extract(pointer)._atomicLoad(ordering: ordering))
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicStore(
_ desired: Value,
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicStoreOrdering
) {
_extract(pointer)._atomicStore(_encode(desired), ordering: ordering)
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicExchange(
_ desired: Value,
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicUpdateOrdering
) -> Value {
_decode(_extract(pointer)._atomicExchange(_encode(desired), ordering: ordering))
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicCompareExchange(
expected: Value,
desired: Value,
at pointer: UnsafeMutablePointer<Self>,
ordering: AtomicUpdateOrdering
) -> (exchanged: Bool, original: Value) {
let (exchanged, original) = _extract(pointer)._atomicCompareExchange(
expected: _encode(expected),
desired: _encode(desired),
ordering: ordering)
return (exchanged, _decode(original))
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicCompareExchange(
expected: Value,
desired: Value,
at pointer: UnsafeMutablePointer<Self>,
successOrdering: AtomicUpdateOrdering,
failureOrdering: AtomicLoadOrdering
) -> (exchanged: Bool, original: Value) {
let (exchanged, original) = _extract(pointer)._atomicCompareExchange(
expected: _encode(expected),
desired: _encode(desired),
successOrdering: successOrdering,
failureOrdering: failureOrdering)
return (exchanged, _decode(original))
}
@_semantics("atomics.requires_constant_orderings")
@_transparent @_alwaysEmitIntoClient
public static func atomicWeakCompareExchange(
expected: Value,
desired: Value,
at pointer: UnsafeMutablePointer<Self>,
successOrdering: AtomicUpdateOrdering,
failureOrdering: AtomicLoadOrdering
) -> (exchanged: Bool, original: Value) {
let (exchanged, original) = _extract(pointer)._atomicWeakCompareExchange(
expected: _encode(expected),
desired: _encode(desired),
successOrdering: successOrdering,
failureOrdering: failureOrdering)
return (exchanged, _decode(original))
}
}
% end
|
