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227 lines
7.7 KiB
Python
227 lines
7.7 KiB
Python
# -*- coding: utf-8 -*-
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"""修 HeadlessUI 的线程模型。
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问题：Tk 解释器在主线程创建，却在泵线程里 update()。
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Tkinter 有线程亲和性 —— 泵线程第一次 update 就抛异常然后静默 return，
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线程直接死了，之后所有 ui_call 都会"界面响应超时"。
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修法：整条链路都归泵线程 —— 由它创建 Tk、由它 update、由它执行任务。
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主线程只负责往队列里丢活儿。
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"""
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from __future__ import annotations
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import sys
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from pathlib import Path
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HEADLESS = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\windows"
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r"\lanremote\headless.py")
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# ---------------- __init__ 加 _ready ----------------
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INIT_OLD = ''' self._pump_thread: threading.Thread | None = None
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self._stopping = False'''
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INIT_NEW = ''' self._pump_thread: threading.Thread | None = None
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self._ready = threading.Event()
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self._stopping = False'''
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# ---------------- 替换 _ensure_root / _start_pump / ui_call ----------------
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OLD = ''' def _ensure_root(self):
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"""按需创建一个**隐藏**的 Tk 根窗口。
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只作为内容窗口的父容器，从不显示自己 —— 所以启动时看不到任何窗口。
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"""
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if not IS_WINDOWS or tk is None:
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return None
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with self._tk_lock:
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if self._root is not None:
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return self._root
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try:
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root = tk.Tk()
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root.withdraw()
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root.title("")
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self._root = root
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self._start_pump()
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return root
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except Exception as exc: # noqa: BLE001
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self.log(f"创建界面根窗口失败: {exc}")
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return None
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def _start_pump(self) -> None:
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if self._pump_thread is not None:
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return
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def pump():
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while not self._stopping:
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try:
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task = self._queue.get(timeout=0.2)
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except queue.Empty:
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if self._root is not None:
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try:
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self._root.update()
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except Exception: # noqa: BLE001
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return
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continue
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try:
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task()
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except Exception as exc: # noqa: BLE001
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self.log(f"界面任务出错: {exc}")
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if self._root is not None:
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try:
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self._root.update()
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except Exception: # noqa: BLE001
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return
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self._pump_thread = threading.Thread(target=pump, daemon=True,
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name="headless-ui")
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self._pump_thread.start()
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def ui_call(self, fn, timeout: float = 8.0):
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"""在界面线程里执行 fn。
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静默模式没有独立的主循环线程可依赖，所以：能就地执行就就地执行，
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需要 Tk 窗口的操作丢给泵线程并等结果。
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"""
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if self._root is None:
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# 还没有根窗口；如果这个操作需要 Tk，就先建一个
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try:
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return fn()
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except Exception as exc: # noqa: BLE001
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raise RuntimeError(f"界面不可用: {exc}") from exc
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result: list = []
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error: list = []
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done = threading.Event()
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def task():
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try:
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result.append(fn())
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except Exception as exc: # noqa: BLE001
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error.append(exc)
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finally:
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done.set()
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self._queue.put(task)
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if not done.wait(timeout):
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raise TimeoutError("界面响应超时")
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if error:
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raise error[0]
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return result[0] if result else None'''
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NEW = ''' def _ensure_root(self):
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"""按需启动界面线程，并等它把**隐藏的** Tk 根窗口建好。
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关键：Tk 解释器必须在**同一个线程**里创建和使用。
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所以根窗口由泵线程自己建 —— 如果在主线程建、在泵线程 update，
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Tkinter 会因为线程亲和性直接抛异常，泵线程当场就死了。
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"""
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if not IS_WINDOWS or tk is None:
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return None
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if threading.current_thread() is self._pump_thread:
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return self._root # 已经在界面线程里
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with self._tk_lock:
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if self._root is not None:
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return self._root
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if self._pump_thread is None:
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self._ready.clear()
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self._pump_thread = threading.Thread(
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target=self._pump, daemon=True, name="headless-ui")
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self._pump_thread.start()
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self._ready.wait(8.0)
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return self._root
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def _pump(self) -> None:
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"""界面线程：Tk 在这里建，也只有这里能碰它。"""
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try:
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root = tk.Tk()
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root.withdraw()
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root.title("")
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except Exception as exc: # noqa: BLE001
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self.log(f"创建界面根窗口失败: {exc}")
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self._ready.set()
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return
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self._root = root
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self._ready.set()
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while not self._stopping:
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try:
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task = self._queue.get(timeout=0.05)
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except queue.Empty:
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task = None
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if task is not None:
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try:
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task()
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except Exception as exc: # noqa: BLE001
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self.log(f"界面任务出错: {exc}")
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try:
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root.update()
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except Exception: # noqa: BLE001
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break
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try:
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root.destroy()
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except Exception: # noqa: BLE001
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pass
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self._root = None
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def ui_call(self, fn, timeout: float = 8.0):
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"""在界面线程里执行 fn。
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Tk 只允许在拥有它的那个线程里操作，所以这里一律丢给泵线程；
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调用方本来就在泵线程里的话就地执行（否则会自己等自己）。
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"""
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if threading.current_thread() is self._pump_thread:
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return fn()
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root = self._ensure_root()
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if root is None:
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return fn() # 没有 Tk 环境（非 Windows），就地执行
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result: list = []
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error: list = []
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done = threading.Event()
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def task():
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try:
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result.append(fn())
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except Exception as exc: # noqa: BLE001
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error.append(exc)
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finally:
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done.set()
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self._queue.put(task)
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if not done.wait(timeout):
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raise TimeoutError("界面响应超时")
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if error:
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raise error[0]
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return result[0] if result else None'''
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def main() -> int:
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text = HEADLESS.read_text(encoding="utf-8")
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ok = True
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for old, new, tag in ((INIT_OLD, INIT_NEW, "_ready 字段"),
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(OLD, NEW, "线程模型重写")):
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if old not in text:
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print(f" [跳过] {tag} —— 锚点没找到")
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ok = False
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continue
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text = text.replace(old, new, 1)
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print(f" {tag}: OK")
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if ok:
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HEADLESS.write_text(text, encoding="utf-8")
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import ast
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try:
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ast.parse(HEADLESS.read_text(encoding="utf-8"))
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print(" headless.py: 语法 OK")
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except SyntaxError as exc:
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print(f" headless.py: 语法错误 {exc}")
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ok = False
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return 0 if ok else 1
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if __name__ == "__main__":
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sys.exit(main())
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