@class NSString, PBCodable, NSObject, NSMutableArray; @protocol OS_dispatch_queue; @interface _SYMultiSuspendableQueue : NSObject <SYStateLoggable> { NSObject<OS_dispatch_queue> *_queue; NSObject<OS_dispatch_queue> *_targetQueue; unsigned long long _stateHandle; _Atomic int _resumeCount; NSString *_logDescriptor; NSMutableArray *_latestSuspendBacktraces; NSMutableArray *_latestResumeBacktraces; } @property (readonly, nonatomic) NSString *name; @property (readonly, nonatomic) NSObject<OS_dispatch_queue> *dispatchQueue; @property (readonly, nonatomic) NSObject<OS_dispatch_queue> *targetQueue; @property (readonly, nonatomic) unsigned int qosClass; @property (readonly, nonatomic, getter=isSuspended) BOOL suspended; @property (readonly, nonatomic) PBCodable *stateForLogging; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)async:(id /* block */)a0; - (id)init; - (void)dealloc; - (void)suspend; - (void)barrierSync:(id /* block */)a0; - (id)initWithName:(id)a0 qosClass:(unsigned int)a1 serial:(BOOL)a2; - (void)resume; - (void).cxx_destruct; - (void)barrierAsync:(id /* block */)a0; - (id)initWithName:(id)a0 qosClass:(unsigned int)a1 serial:(BOOL)a2 target:(id)a3; - (void)sync:(id /* block */)a0; @end