Structure_Concurrency5.9.0
UnsafeCurrentTask
An unsafe reference to the current task.
- iOS
- 13.0+
- macOS
- 10.15+
- tvOS
- 13.0+
- watchOS
- 6.0+
struct UnsafeCurrentTaskTo get an instance of UnsafeCurrentTask for the current task, call the withUnsafeCurrentTask(body:) method. Don’t store an unsafe task reference for use outside that method’s closure. Storing an unsafe reference doesn’t affect the task’s actual life cycle, and the behavior of accessing an unsafe task reference outside of the withUnsafeCurrentTask(body:) method’s closure isn’t defined.
Only APIs on UnsafeCurrentTask that are also part of Task are safe to invoke from a task other than the task that this UnsafeCurrentTask instance refers to. Calling other APIs from another task is undefined behavior, breaks invariants in other parts of the program running on this task, and may lead to crashes or data loss.
For information about the language-level concurrency model that UnsafeCurrentTask is part of, see Concurrency in The Swift Programming Language.
Citizens in _Concurrency
Conformances
protocol EquatableA type that can be compared for value equality.
protocol HashableA type that can be hashed into a
Hasherto produce an integer hash value.
Members
var basePriority: TaskPriorityThe current task’s base priority.
var isCancelled: BoolA Boolean value that indicates whether the current task was canceled.
var priority: TaskPriorityThe current task’s priority.
static func == (UnsafeCurrentTask, UnsafeCurrentTask) -> Bool func cancel() Cancel the current task.
func hash(into: inout Hasher)