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NeXtMidas Training
Primitives
Primitive Restarts
Control Flow (Restart)
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- Control flow during a restart:
- When the a primitive restarts, it closes any pipes it has open (this
is done in the
close() method).
- As the pipes are closed, they get marked as needing a restart (this
is done automatically).
- As subsequent primitives reach the point in the pipe where the
restart was called, the
read(..) method returns
end-of-file (EOF), numRead<0, and marks the primitive
for a restart.
- These primitives restart and trigger any additional restarts "down
the line." The result is like a waterfall with subsequent primitives
restarting as needed.
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