121 lines
2.8 KiB
Python
121 lines
2.8 KiB
Python
import queue
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import threading
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from typing import Callable, Iterable, Literal, Optional, Sequence, TypeVar, overload
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from .get_config import get_config
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from .manage_communication import manage_communication
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from .manage_serial import manage_serial
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from .mapper_function import mapper_function
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T = TypeVar("T")
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V = TypeVar("V")
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@overload
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def threaded_parallel_map(
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function: Callable[[T], V],
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input_values: Sequence[T],
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*,
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chunk_size: Optional[int],
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concurrency: Optional[int],
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unordered: Optional[bool],
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ignore_exceptions: Optional[Literal[False]],
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) -> Iterable[V]:
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...
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@overload
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def threaded_parallel_map(
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function: Callable[[T], V],
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input_values: Iterable[T],
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*,
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chunk_size: int,
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concurrency: Optional[int],
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unordered: Optional[bool],
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ignore_exceptions: Optional[Literal[False]],
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) -> Iterable[V]:
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...
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@overload
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def threaded_parallel_map(
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function: Callable[[T], V],
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input_values: Sequence[T],
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*,
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chunk_size: Optional[int],
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concurrency: Optional[int],
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unordered: Optional[bool],
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ignore_exceptions: True,
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) -> Iterable[Optional[V]]:
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...
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@overload
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def threaded_parallel_map(
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function: Callable[[T], V],
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input_values: Iterable[T],
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*,
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chunk_size: int,
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concurrency: Optional[int],
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unordered: Optional[bool],
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ignore_exceptions: True,
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) -> Iterable[Optional[V]]:
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...
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def threaded_parallel_map(
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function,
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input_values,
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*,
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chunk_size=None,
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concurrency=None,
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unordered=False,
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ignore_exceptions=False,
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):
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config = get_config(
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function=function,
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input_values=input_values,
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chunk_size=chunk_size,
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concurrency=concurrency,
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)
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if config.concurrency == 1:
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yield from manage_serial(
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function=function,
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input_values=input_values,
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ignore_exceptions=ignore_exceptions,
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)
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input_queue = queue.Queue(config.concurrency * 2)
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output_queue = queue.Queue(config.concurrency * 2)
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should_stop = threading.Event()
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threads = [
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threading.Thread(
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name=f"threaded_parallel_map_{config.function_name}_{i}",
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target=mapper_function,
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daemon=True,
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kwargs=dict(
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input_queue=input_queue,
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output_queue=output_queue,
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should_stop=should_stop,
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map_function=function,
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),
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)
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for i in range(config.concurrency)
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]
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for t in threads:
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t.start()
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yield from manage_communication(
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input_values=input_values,
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chunk_size=config.chunk_size,
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input_queue=input_queue,
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output_queue=output_queue,
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unordered=unordered,
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ignore_exceptions=ignore_exceptions,
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)
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should_stop.set()
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for t in threads:
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t.join(1)
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