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Merge pull request #880 from aivcec/fix/subscriptions-data-races
Fixing data races in subscriptions
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,36 @@ | ||
import Foundation | ||
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class Atomic<T> { | ||
private let lock = NSLock() | ||
private var _value: T | ||
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init(_ value: T) { | ||
_value = value | ||
} | ||
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var value: T { | ||
get { | ||
lock.lock() | ||
defer { lock.unlock() } | ||
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return _value | ||
} | ||
set { | ||
lock.lock() | ||
defer { lock.unlock() } | ||
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_value = newValue | ||
} | ||
} | ||
} | ||
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extension Atomic where T == Int { | ||
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func increment() -> T { | ||
lock.lock() | ||
defer { lock.unlock() } | ||
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_value += 1 | ||
return _value | ||
} | ||
} |
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