# Copyright (c) 2016 The University of Manchester
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .core_subset import CoreSubset
[docs]class CoreSubsets(object):
"""
Represents a group of CoreSubsets, with a maximum of one per
SpiNNaker chip.
"""
__slots__ = ("_core_subsets", )
def __init__(self, core_subsets=None):
"""
:param iterable(CoreSubset) core_subsets:
The cores for each desired chip
"""
self._core_subsets = dict()
if core_subsets is not None:
for core_subset in core_subsets:
self.add_core_subset(core_subset)
[docs] def add_core_subset(self, core_subset):
"""
Add a core subset to the set
:param CoreSubset core_subset: The core subset to add
"""
x = core_subset.x
y = core_subset.y
for processor_id in core_subset.processor_ids:
self.add_processor(x, y, processor_id)
[docs] def add_core_subsets(self, core_subsets):
"""
Merges a core subsets into this one.
:param iterable(CoreSubset) core_subsets: the core subsets to add
"""
for core_subset in core_subsets:
self.add_core_subset(core_subset)
[docs] def add_processor(self, x, y, processor_id):
"""
Add a processor on a given chip to the set.
:param int x: The x-coordinate of the chip
:param int y: The y-coordinate of the chip
:param int processor_id: A processor ID
"""
xy = (x, y)
if xy not in self._core_subsets:
self._core_subsets[xy] = CoreSubset(x, y, [processor_id])
else:
self._core_subsets[xy].add_processor(processor_id)
[docs] def is_chip(self, x, y):
"""
Determine if the chip with coordinates (x, y) is in the subset
:param int x: The x-coordinate of a chip
:param int y: The y-coordinate of a chip
:return: True if the chip with coordinates (x, y) is in the subset
:rtype: bool
"""
return (x, y) in self._core_subsets
[docs] def is_core(self, x, y, processor_id):
"""
Determine if there is a chip with coordinates (x, y) in the
subset, which has a core with the given ID in the subset
:param int x: The x-coordinate of a chip
:param int y: The y-coordinate of a chip
:param int processor_id: The ID of a core
:return: Whether there is a chip with coordinates (x, y) in the
subset, which has a core with the given ID in the subset
:rtype: bool
"""
xy = (x, y)
if xy not in self._core_subsets:
return False
return processor_id in self._core_subsets[xy]
@property
def core_subsets(self):
"""
The one-per-chip subsets.
:return: Iterable of core subsets
:rtype: iterable(CoreSubset)
"""
return iter(self._core_subsets.values())
[docs] def get_core_subset_for_chip(self, x, y):
"""
Get the core subset for a chip.
:param int x: The x-coordinate of a chip
:param int y: The y-coordinate of a chip
:return: The core subset of a chip, which will be empty if not added
:rtype: CoreSubset
"""
xy = (x, y)
if xy not in self._core_subsets:
return CoreSubset(x, y, [])
return self._core_subsets[xy]
def __iter__(self):
"""
Iterable of core_subsets.
:rtype: iterable(CoreSubset)
"""
return iter(self._core_subsets.values())
def __len__(self):
"""
The total number of processors that are in these core subsets.
:rtype: int
"""
return sum(len(subset) for subset in self._core_subsets.values())
def __contains__(self, x_y_tuple):
"""
True if the given coordinates are in the set.
:param x_y_tuple:
Either a 2-tuple of x, y coordinates or a 3-tuple or x, y,
processor_id coordinates
:type x_y_tuple: tuple(int,int) or tuple(int,int,int)
:rtype: bool
"""
if len(x_y_tuple) == 2:
return self.is_chip(*x_y_tuple)
return self.is_core(*x_y_tuple)
def __getitem__(self, x_y_tuple):
"""
The core subset for the given x, y tuple.
:param tuple(int,int) x_y_tuple:
:rtype: CoreSubset
"""
return self._core_subsets[x_y_tuple]
def __repr__(self):
"""
Human-readable version of the object.
:return: string representation of the CoreSubsets
"""
output = ""
for xy in self._core_subsets:
output += str(xy)
return output
[docs] def intersect(self, other):
"""
Returns a new CoreSubsets which is an intersect of this and the other.
:param other: A second CoreSubsets with possibly overlapping cores
:type other: CoreSubsets
:return: A new CoreSubsets with any overlap
:rtype: CoreSubsets
"""
result = CoreSubsets()
for xy in self._core_subsets:
if xy in other:
subset = self._core_subsets[xy].intersect(other[xy])
if subset:
result.add_core_subset(subset)
return result
[docs] def values(self):
"""
:rtype: iterable(CoreSubset)
"""
return self._core_subsets.values()