"""CPU copy kernel."""
from __future__ import annotations
from typing import Any, Mapping
import numpy as np
from shmpipeline.config import KernelConfig, SharedMemoryConfig
from shmpipeline.kernels.cpu._common import validate_unary_same_shape_and_dtype
from shmpipeline.kernels.cpu.base import CpuKernel
[docs]
class CopyCpuKernel(CpuKernel):
"""Copy one CPU shared-memory payload into another."""
kind = "cpu.copy"
[docs]
@classmethod
def validate_config(
cls,
config: KernelConfig,
shared_memory: Mapping[str, SharedMemoryConfig],
) -> None:
"""Require matching input and output stream metadata."""
super().validate_config(config, shared_memory)
validate_unary_same_shape_and_dtype(config, shared_memory)
[docs]
def compute_into(
self,
trigger_input: Any,
output: Any,
auxiliary_inputs: Mapping[str, Any],
) -> None:
"""Copy the input payload into the reusable output buffer."""
del auxiliary_inputs
np.copyto(output, np.asarray(trigger_input))