Source code for spinnman.processes.malloc_sdram_process
# Copyright (c) 2015 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 spinnman.messages.scp.impl.sdram_alloc import SDRAMAlloc, _AllocResponse
from .abstract_multi_connection_process import AbstractMultiConnectionProcess
from .abstract_multi_connection_process_connection_selector import (
ConnectionSelector)
class MallocSDRAMProcess(AbstractMultiConnectionProcess[_AllocResponse]):
"""
A process for allocating a block of SDRAM on a SpiNNaker chip.
"""
__slots__ = ("_base_address", )
def __init__(self, connection_selector: ConnectionSelector):
"""
:param ConnectionSelector connection_selector:
"""
super().__init__(connection_selector)
self._base_address = 0
def __handle_sdram_alloc_response(self, response: _AllocResponse):
self._base_address = response.base_address
[docs]
def malloc_sdram(self, x: int, y: int, size: int, app_id: int, tag: int):
"""
Allocate space in the SDRAM space.
:param int x:
:param int y:
:param int size:
:param int app_id:
:param int tag:
"""
# pylint: disable=too-many-arguments
with self._collect_responses():
self._send_request(SDRAMAlloc(x, y, app_id, size, tag),
self.__handle_sdram_alloc_response)
@property
def base_address(self) -> int:
"""
The address of the allocated memory block.
:rtype: int
"""
return self._base_address