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/*
* Copyright (c) 2014, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. * */
#import <Foundation/Foundation.h>
#import "OSSCancellationTokenRegistration.h"
NS_ASSUME_NONNULL_BEGIN
/*!
A block that will be called when a token is cancelled. */typedef void(^OSSCancellationBlock)(void);
/*!
The consumer view of a CancellationToken. Propagates notification that operations should be canceled. A OSSCancellationToken has methods to inspect whether the token has been cancelled. */@interface OSSCancellationToken : NSObject
/*!
Whether cancellation has been requested for this token source. */@property (nonatomic, assign, readonly, getter=isCancellationRequested) BOOL cancellationRequested;
/*!
Register a block to be notified when the token is cancelled. If the token is already cancelled the delegate will be notified immediately. */- (OSSCancellationTokenRegistration *)registerCancellationObserverWithBlock:(OSSCancellationBlock)block;
@end
NS_ASSUME_NONNULL_END
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