From 21d3023a9b7b6aff68c1170e345951396b1c6cfd Mon Sep 17 00:00:00 2001
From: 单军华
Date: Tue, 31 Jul 2018 13:35:21 +0800
Subject: [PATCH] no message

---
 screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYSentinel.h |   31 +++++++++++++++++++++++++++++++
 1 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYSentinel.h b/screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYSentinel.h
new file mode 100755
index 0000000..c81e6a7
--- /dev/null
+++ b/screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYSentinel.h
@@ -0,0 +1,31 @@
+//
+//  YYSentinel.h
+//  YYKit <https://github.com/ibireme/YYKit>
+//
+//  Created by ibireme on 15/4/13.
+//  Copyright (c) 2015 ibireme.
+//
+//  This source code is licensed under the MIT-style license found in the
+//  LICENSE file in the root directory of this source tree.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ YYSentinel is a thread safe incrementing counter. 
+ It may be used in some multi-threaded situation.
+ */
+@interface YYSentinel : NSObject
+
+/// Returns the current value of the counter.
+@property (readonly) int32_t value;
+
+/// Increase the value atomically.
+/// @return The new value.
+- (int32_t)increase;
+
+@end
+
+NS_ASSUME_NONNULL_END

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