Flags to pass to the dispatch and dispatch functions.
SDKs
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
Framework
- Dispatch
Declaration
typedef enum : unsigned long {
...
} dispatch_block_flags_t;
Enumerationdispatch
dispatch
Topics
Flags
DISPATCHSet the attributes of the work item to match the attributes of the current execution context.
DISPATCHCause the work item to act as a barrier block when submitted to a concurrent queue.
DISPATCHDisassociate the work item's attributes from the current execution context.
DISPATCHPrefer the quality-of-service class associated with the block.
DISPATCHPrefer the quality-of-service class associated with the current execution context.
DISPATCHExecute the work item without assigning a quality-of-service class.
See Also
Creating a Work Item
dispatchCreates a new dispatch block on the heap using an existing block and the given flags.
dispatchCreates a new dispatch block from an existing block and the given flags, and assigns it the specified quality-of-service class and relative priority.
dispatchThe prototype of blocks submitted to dispatch queues, which take no arguments and have no return value.
Beta Software
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