Package uk.ac.manchester.spinnaker.messages.scp

Class SDRAMAlloc

java.lang.Object

uk.ac.manchester.spinnaker.messages.sdp.SpinnakerRequest

uk.ac.manchester.spinnaker.messages.scp.SCPRequest<SDRAMAlloc.Response>

uk.ac.manchester.spinnaker.messages.scp.SDRAMAlloc

All Implemented Interfaces:

SerializableMessage

public class SDRAMAlloc
extends SCPRequest<SDRAMAlloc.Response>

A request to allocate space in the SDRAM space. The response payload is the location of the block of allocated memory.

Calls cmd_alloc() (and hence sark_xalloc()) in scamp-cmd.c.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected final class	SDRAMAlloc.Response	An SCP response to a request to allocate space in SDRAM.

Field Summary

Fields inherited from class uk.ac.manchester.spinnaker.messages.scp.SCPRequest

argument1, argument2, argument3, BOOT_CHIP, BOOT_MONITOR_CORE, data, NO_DATA, scpRequestHeader

Fields inherited from class uk.ac.manchester.spinnaker.messages.sdp.SpinnakerRequest

sdpHeader

Constructor Summary

Constructors

Constructor	Description
SDRAMAlloc(HasChipLocation chip, AppID appID, int size)
SDRAMAlloc(HasChipLocation chip, AppID appID, int size, int tag)

Method Summary

Modifier and Type	Method	Description
SDRAMAlloc.Response	getSCPResponse(ByteBuffer buffer)	Parse the response to this message.

Methods inherited from class uk.ac.manchester.spinnaker.messages.scp.SCPRequest

addToBuffer

Methods inherited from class uk.ac.manchester.spinnaker.messages.sdp.SpinnakerRequest

getMessageData

Methods inherited from class java.lang.Object

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

Constructor Details

SDRAMAlloc

public SDRAMAlloc(HasChipLocation chip,
 AppID appID,
 int size)

Parameters:

chip - the chip to allocate on

appID - The ID of the application

size - The size in bytes of memory to be allocated

SDRAMAlloc

public SDRAMAlloc(HasChipLocation chip,
 AppID appID,
 int size,
 int tag)

Parameters:

chip - the chip to allocate on

appID - The ID of the application

size - The size in bytes of memory to be allocated

tag - the tag for the SDRAM, a 8-bit (chip-wide) tag that can be looked up by a SpiNNaker application to discover the address of the allocated block

Throws:

IllegalArgumentException - If a bad tag is given.

Method Details

getSCPResponse

public SDRAMAlloc.Response getSCPResponse(ByteBuffer buffer)
                                   throws UnexpectedResponseCodeException,
MemoryAllocationFailedException

Description copied from class: SCPRequest

Parse the response to this message.

Specified by:

getSCPResponse in class SCPRequest<SDRAMAlloc.Response>

Parameters:

buffer - The buffer to parse.

Returns:

The message response.

Throws:

UnexpectedResponseCodeException

MemoryAllocationFailedException