What generated this task.
Buffer where data was read/written.
Number of bytes the task was to read/write.
Actual number of bytes that were read/written.
Offset in the SDL_AsyncIO where data was read/written.
The result of the work (success, failure, cancellation).
What sort of task was this? Read, write, etc?
Pointer provided by the app when starting the task
Information about a completed asynchronous I/O request.