//
//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//

NS_ASSUME_NONNULL_BEGIN

@interface OWSDispatch : NSObject

/**
 * Attachment downloading
 */
+ (dispatch_queue_t)attachmentsQueue;

/**
 * Signal protocol session state must be coordinated on a serial queue. This is sometimes used synchronously,
 * so never dispatching sync *from* this queue to avoid deadlock.
 */
+ (dispatch_queue_t)sessionCipher;

/**
 * Serial message sending queue
 */
+ (dispatch_queue_t)sendingQueue;

@end

void AssertIsOnMainThread();

NS_ASSUME_NONNULL_END