Nat Goodspeed 402a4353f7 Define sched_algorithm methods on fiber_base*, not worker_fiber*. ...

Some reviewers disliked that to build a custom sched_algorithm subclass, you
must necessarily manipulate pointers to classes in the boost::fibers::detail
namespace. Redefine all such methods to use fiber_base* rather than
detail::worker_fiber*.

Hoist fiber_base* into boost::fibers namespace. We considered an opaque
typedef rather than fiber_base*, but in fact a sched_algorithm subclass may
need is_ready().

Moreover, a sched_algorithm subclass may well want to use an intrusive linked
list to queue fibers. Hoist worker_fiber::nxt_ pointer into fiber_base, and
remove worker_fiber::next() and next_reset() methods. This allows recasting
detail::fifo in terms of fiber_base*, therefore round_robin can be stated
almost entirely in terms of fiber_base* rather than worker_fiber*.

Recast fiber constructor taking worker_fiber* to take fiber_base* instead.
This constructor is used solely for fiber migration; with relevant functions
now returning fiber_base*, we think we no longer need fiber(worker_fiber*).

2014-11-10 21:19:28 -05:00

1.4 KiB

Raw Blame History

View Raw