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| | | // |
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| | | // YYSentinel.h |
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| | | // YYKit <https://github.com/ibireme/YYKit> |
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| | | // |
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| | | // Created by ibireme on 15/4/13. |
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| | | // Copyright (c) 2015 ibireme. |
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| | | // |
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| | | // This source code is licensed under the MIT-style license found in the |
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| | | // LICENSE file in the root directory of this source tree. |
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| | | // |
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| | | |
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| | | #import <Foundation/Foundation.h> |
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| | | |
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| | | NS_ASSUME_NONNULL_BEGIN |
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| | | |
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| | | /** |
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| | | YYSentinel is a thread safe incrementing counter. |
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| | | It may be used in some multi-threaded situation. |
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| | | */ |
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| | | @interface YYSentinel : NSObject |
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| | | /// Returns the current value of the counter. |
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| | | @property (readonly) int32_t value; |
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| | | |
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| | | /// Increase the value atomically. |
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| | | /// @return The new value. |
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| | | - (int32_t)increase; |
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| | | |
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| | | @end |
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| | | NS_ASSUME_NONNULL_END |
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