Source code for spinnman.messages.scp.impl.count_state_response
# Copyright (c) 2014 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.
import struct
from spinn_utilities.overrides import overrides
from spinnman.messages.scp.abstract_messages import AbstractSCPResponse
from spinnman.messages.scp.enums import SCPResult
from spinnman.exceptions import SpinnmanUnexpectedResponseCodeException
_ONE_WORD = struct.Struct("<I")
[docs]
class CountStateResponse(AbstractSCPResponse):
"""
An SCP response to a request for the number of cores in a given state.
"""
__slots__ = "_count",
def __init__(self):
super().__init__()
self._count = None
[docs]
@overrides(AbstractSCPResponse.read_data_bytestring)
def read_data_bytestring(self, data: bytes, offset: int):
result = self.scp_response_header.result
# We can accept a no-reply response here; that could just mean
# that the count wasn't complete (but might be enough anyway)
if result != SCPResult.RC_OK and result != SCPResult.RC_P2P_NOREPLY:
raise SpinnmanUnexpectedResponseCodeException(
"CountState", "CMD_COUNT", result.name)
self._count = _ONE_WORD.unpack_from(data, offset)[0]
@property
def count(self) -> int:
"""
The count of the number of cores with the requested state.
:rtype: int
"""
return self._count