at.dms.kjc.cell
Class GetOrMakeCellChannel

java.lang.Object
  at.dms.kjc.backendSupport.GetOrMakeChannel
      at.dms.kjc.cell.GetOrMakeCellChannel

public class GetOrMakeCellChannel
extends GetOrMakeChannel

Field Summary

Fields inherited from class at.dms.kjc.backendSupport.GetOrMakeChannel

backEndBits

Constructor Summary

GetOrMakeCellChannel(CellBackendFactory backEndBits)

Method Summary

Channel	makeInterSliceChannel(InterSliceEdge e) Create channel between slices.
Channel	makeIntraSliceChannel(Edge e) For an edge within a slice, create a channel that implements that edge.

Methods inherited from class at.dms.kjc.backendSupport.GetOrMakeChannel

getOrMakeChannel

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GetOrMakeCellChannel

public GetOrMakeCellChannel(CellBackendFactory backEndBits)

Method Detail

makeInterSliceChannel

public Channel makeInterSliceChannel(InterSliceEdge e)

Description copied from class: GetOrMakeChannel

Create channel between slices. The default version here assumes shared memory, and implements a channel as an array.

A subclass may call super.makeInterSliceChannel(e) if both ends of the channel are laid out on the same ComputeNode and if using an array in the ComputeNode's memory is an appropriate way of communicating. Otherwise a subclass will make a channel of the appropriate type.

Overrides:

makeInterSliceChannel in class GetOrMakeChannel

makeIntraSliceChannel

public Channel makeIntraSliceChannel(Edge e)

Description copied from class: GetOrMakeChannel

For an edge within a slice, create a channel that implements that edge. The provided code assumes that (1) there are no filter->filter edges. (2) That there is never a need to buffer data between a filter and a following splitter (i.e. the inter-slice channels connected to by the splitter will provide any necessary bufferring). If this assumption changes then update this code to handle the case.

This routine may need to be overridden in the case where it is necessary to buffer data off chip between a joiner and a filter or between a filter and a splitter, or in the case where we are not using simple slices and there are filter->filter edges.

Overrides:

makeIntraSliceChannel in class GetOrMakeChannel

Parameters:

e - an Edge

Returns:

a channel that implements the edge or null if no data passes over the edge.