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mail is a three-dimensional-grid-abstraction
class. A grid naming abstraction is attached to the
process list, analogously to the G2-Class two-dimensional-grid
primitives. This class is interesting for problems where there are
three logical ``axes'' of concurrency. Children of a G3 mailer are G2
mailers representing planes within the three-dimensional grid.
Operations analogous to the two-dimensional case have been extended to
the three-dimensional grid case and are not detailed here (see
[Skjellum:92b;c]).
Shorthands provide access to the PQ-plane, QR-plane, and PR-plane
children to which G2 grid operations may be applied, as above.

ZIP_MAILER *mailer; /* 3D grid mailer */
ZIP_MAILER *PQ_plane_mailer, QR_plane_mailer, PR_plane_mailer;
PQ_plane_mailer = g3_PQ_plane(mailer);
QR_plane_mailer = g3_QR_plane(mailer);
PR_plane_mailer = g3_PR_plane(mailer);

* Guy Robinson *

Wed Mar 1 10:19:35 EST 1995