at.dms.kjc.spacetime
Class CommunicateAddrs

java.lang.Object
  at.dms.kjc.spacetime.CommunicateAddrs

public class CommunicateAddrs
extends Object

This class will generate code to allocate the off chip buffers on the necessary tiles and then communicate each buffer's global address to the tiles that need to know the address. It will also generate the typedefs for the rotating buffers and the functions that will set up the structs for rotation (a circular linked list of buffers). The structure is a circular linked list that has length equal to the rotation length of the buffer, where each entry in the list points to a component (buffer) of the rotated buffer.

It also sets the rotation length for the buffers based on the primepump schedule.

Author:

mgordon

Field Summary

static String	freeFunctName name of the function that de-allocates the rotation buffers
static String	functName name of the function that communicates the addresses on each tile
static String	rotationSetupFunction name of the function that initializes the rotation structures
static String	rotTypeDefPrefix prefix of the variable name for hte rotating buffers

Method Summary

static void	doit(RawChip chip, SpaceTimeSchedule stSchedule) Generate code to allocate the off chip buffers on the necessary tiles and then communicate each buffer's global address to the tiles that need to know the address.
static String	getFields(ComputeNode tile) Return a string of C variable declarations that we create for the given tile.
static String	getFreeFunction(ComputeNode tile) Return for
static String	getFunction(ComputeNode tile) For
static String	getRotationTypes() Generate a string that has c code for the type defs for the rotating buffer types.
static String	getRotSetupFunct(ComputeNode tile) Given a tile return C function declaration for the function that will setup the rotation structure for the buffers mapped to this tile.

Methods inherited from class java.lang.Object

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

Field Detail

rotationSetupFunction

public static String rotationSetupFunction

name of the function that initializes the rotation structures

functName

public static String functName

name of the function that communicates the addresses on each tile

freeFunctName

public static String freeFunctName

name of the function that de-allocates the rotation buffers

rotTypeDefPrefix

public static String rotTypeDefPrefix

prefix of the variable name for hte rotating buffers

Method Detail

getFields

public static String getFields(ComputeNode tile)

Return a string of C variable declarations that we create for the given tile.

Parameters:

tile - The raw tile.

Returns:

For

tile

return the fields that represent the buffers as C variable declarations.

getRotSetupFunct

public static String getRotSetupFunct(ComputeNode tile)

Given a tile return C function declaration for the function that will setup the rotation structure for the buffers mapped to this tile.

Parameters:

tile - The tile

Returns:

The c function.

getFreeFunction

public static String getFreeFunction(ComputeNode tile)

Return for

tile

return a function that will free the buffer memory.

Parameters:

tile - The tile.

Returns:

For

tile

return a function that will free the buffer memory.

getFunction

public static String getFunction(ComputeNode tile)

For

tile

return the function that will allocate the buffers or get the addresses from the static network, this function will not perform the setup of the rotation structures.

Parameters:

tile - The tile.

Returns:

For

tile

return the function that will allocate the buffers or get the addresses from the static network.

getRotationTypes

public static String getRotationTypes()

Generate a string that has c code for the type defs for the rotating buffer types.

Returns:

A string that has c code for the type defs for the rotating buffer types.

doit

public static void doit(RawChip chip,
                        SpaceTimeSchedule stSchedule)

Generate code to allocate the off chip buffers on the necessary tiles and then communicate each buffer's global address to the tiles that need to know the address. It will also generate the typedefs for the rotating buffers and the functions that will set up the structs for rotation (a circular linked list of buffers). It also sets the rotation length for the buffers based on the primepump schedule.

Parameters:

chip - The raw chip.

stSchedule - The space time schedule for the app.