mirror of
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38 lines
1.4 KiB
Python
38 lines
1.4 KiB
Python
"""
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free-threaded 运行时下插件触发 GIL 回退的归因。
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"""
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from __future__ import annotations
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from collections.abc import Callable, Iterator
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from contextlib import contextmanager
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from app.foundation.environment import is_free_threaded_runtime, is_gil_enabled
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# 按插件 ID 记录"该插件的加载使进程回退到 GIL"的端口，由注册表实现
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GilFallbackRecorder = Callable[[str], None]
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def ignore_gil_fallback(_plugin_id: str) -> None:
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"""
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默认归因端口：未装配注册表的加载器／生命周期不记录归因。
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"""
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@contextmanager
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def attribute_gil_fallback(plugin_id: str, recorder: GilFallbackRecorder) -> Iterator[None]:
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"""
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观察包裹区间内 GIL 是否从关闭变为开启，发生时把回退归因到该插件。
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GIL 一旦被原生扩展开启就会保持到进程结束，因此只有第一个触发转换的插件能被观察到；
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之后加载的插件即使同样缺少 free-threaded 声明，也无法再被区分。
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插件在加载之后才惰性导入的原生扩展不在任何包裹区间内，同样无法归因。
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区间内抛出的异常照常向外传播，归因在 finally 中完成，加载失败的插件同样会被记录。
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"""
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gil_enabled_before = is_gil_enabled()
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try:
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yield
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finally:
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if is_free_threaded_runtime() and not gil_enabled_before and is_gil_enabled():
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recorder(plugin_id)
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