Source code for secretflow.device.device.register
# Copyright 2022 Ant Group Co., Ltd.
#
# 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 enum import IntEnum
from typing import Callable
# NOTE: Device Conversion Table
# +-------------------+---------------+---------+-------------+
# | | PYU | SPU | TEE | HEU |
# +-----+-------------+---------------+---------+-------------+
# | PYU | | share | encrypt | encrypt |
# +-----+-------------+---------------+---------+-------------+
# | SPU | reconstruct | | x | encrypt+add |
# +-----+-------------+---------------+---------+-------------+
# | TEE | decrypt | x | | x |
# +-----+-------------+---------------+---------+-------------+
# | HEU | decrypt | minus+decrypt | x | |
# +-----+-------------+---------------+---------+-------------+
[docs]class DeviceType(IntEnum):
PYU = 0 # Python Unit
SPU = 1 # Privacy Preserving Processing Unit
TEE = 2 # Trusted Execution Environment
HEU = 3 # Homomorphic Encryption Unit
NUM = 4 # Number of device type
[docs]class Registrar:
"""Device kernel registry"""
[docs] def __init__(self) -> None:
self._ops = [{} for _ in range(DeviceType.NUM)]
[docs] def register(self, device_type: DeviceType, name: str, op: Callable):
"""Register device kernel.
Args:
device_type (DeviceType): Device type.
name (str): Op kernel name.
op (Callable): Op kernel implementaion.
Raises:
KeyError: Duplicate device kernel registered.
"""
if name is None:
name = op.__name__
if name in self._ops[device_type]:
raise KeyError(
f'device: {device_type}, op: {name} has already been registered'
)
self._ops[device_type][name] = op
[docs] def dispatch(self, device_type: DeviceType, name: str, *args, **kwargs):
"""Dispatch device kernel.
Args:
device_type (DeviceType): Device type.
name (str): Op kernel name.
Raises:
KeyError: Device Kernel not registered.
Returns:
Kernel execution result.
"""
if name not in self._ops[device_type]:
raise KeyError(f'device: {device_type}, op: {name} not registered')
return self._ops[device_type][name](*args, **kwargs)
_registrar = Registrar()
[docs]def register(device_type: DeviceType, op_name: str = None):
"""Register device kernel
Args:
device_type (DeviceType): Device type.
op_name (str, optional): Op kernel name. Defaults to None.
"""
def wrapper(op):
_registrar.register(device_type, op_name, op)
return op
return wrapper
[docs]def dispatch(name: str, self, *args, **kwargs):
"""Dispatch device kernel.
Args:
name (str): Kernel name.
self (Device): Traget deivce.
Returns:
Kernel execution result.
"""
return _registrar.dispatch(self.device_type, name, self, *args, **kwargs)