//
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// GCDSemaphore.h
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// GCD
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//
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// 用法
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// http://www.cnblogs.com/YouXianMing/p/3659204.html
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//
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// Created by XianMingYou on 15/3/15.
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// Copyright (c) 2015年 XianMingYou. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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@interface GCDSemaphore : NSObject
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@property (strong, readonly, nonatomic) dispatch_semaphore_t dispatchSemaphore;
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#pragma 初始化
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- (instancetype)init;
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- (instancetype)initWithValue:(long)value;
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#pragma mark - 用法
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- (BOOL)signal;
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- (void)wait;
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- (BOOL)wait:(int64_t)delta;
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@end
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