Applies dg to each element in cyclic fashion until it returns true or the
MergeArray is disrupted by a merge.
dg is applied to each element in turn, such that once dg is applied to an
element, it is not reapplied to the same element until width-1 other
applications of dg finished and all returned false.
If this is merged with another MergeArray with a lower Handle id, such that
the Objs in this are mergeSteal'd from, then the further applications of dg
will stop.
Warning: The applications of dg are NOT collectively atomic, only
individually atomic.
Progress: Deadlock-free if dg returns true after a finite number of
applications.
Applies dg to each element in cyclic fashion until it returns true or the MergeArray is disrupted by a merge.
dg is applied to each element in turn, such that once dg is applied to an element, it is not reapplied to the same element until width-1 other applications of dg finished and all returned false.
If this is merged with another MergeArray with a lower Handle id, such that the Objs in this are mergeSteal'd from, then the further applications of dg will stop.
Warning: The applications of dg are NOT collectively atomic, only individually atomic.
Progress: Deadlock-free if dg returns true after a finite number of applications.