158 lines
5.8 KiB
Python
158 lines
5.8 KiB
Python
import ctypes
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import threading
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import time
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from concurrent.futures import ThreadPoolExecutor, as_completed
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from typing import Dict, Tuple, List
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from Utils.LogManager import LogManager
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def _async_raise(tid: int, exc_type=KeyboardInterrupt) -> bool:
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"""向指定线程抛异常"""
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if not tid:
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LogManager.method_error(f"强杀失败: 线程ID为空", "task")
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return False
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try:
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res = ctypes.pythonapi.PyThreadState_SetAsyncExc(
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ctypes.c_long(tid), ctypes.py_object(exc_type)
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)
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if res == 0:
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LogManager.method_info(f"线程 {tid} 不存在", "task")
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return False
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elif res > 1:
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ctypes.pythonapi.PyThreadState_SetAsyncExc(ctypes.c_long(tid), 0)
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LogManager.method_info(f"线程 {tid} 命中多个线程，已回滚", "task")
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return False
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return True
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except Exception as e:
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LogManager.method_error(f"强杀线程失败: {e}", "task")
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return False
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class ThreadManager:
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_tasks: Dict[str, Dict] = {}
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_lock = threading.RLock()
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@classmethod
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def _cleanup_if_dead(cls, udid: str):
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obj = cls._tasks.get(udid)
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if obj and not obj["thread"].is_alive():
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cls._tasks.pop(udid, None)
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LogManager.method_info(f"检测到 [{udid}] 线程已结束，自动清理。", "task")
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@classmethod
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def add(cls, udid: str, thread: threading.Thread, event: threading.Event, force: bool = False) -> Tuple[int, str]:
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with cls._lock:
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cls._cleanup_if_dead(udid)
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old = cls._tasks.get(udid)
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if old and old["thread"].is_alive():
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if not force:
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return 1001, "当前设备已存在任务"
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LogManager.method_info(f"[{udid}] 检测到旧任务，尝试强制停止", "task")
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cls._force_stop_locked(udid)
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try:
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thread.start()
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# 等待 ident 初始化
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for _ in range(10):
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if thread.ident:
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break
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time.sleep(0.05)
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cls._tasks[udid] = {
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"id": thread.ident,
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"thread": thread,
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"event": event,
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"start_time": time.time(),
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}
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LogManager.method_info(f"创建任务成功 [{udid}]，线程ID={thread.ident}", "task")
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return 200, "创建成功"
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except Exception as e:
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LogManager.method_error(f"线程启动失败: {e}", "task")
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return 1002, f"线程启动失败: {e}"
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@classmethod
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def stop(cls, udid: str, stop_timeout: float = 5.0, kill_timeout: float = 2.0) -> Tuple[int, str]:
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with cls._lock:
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obj = cls._tasks.get(udid)
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if not obj:
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return 200, "任务不存在"
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thread = obj["thread"]
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event = obj["event"]
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tid = obj["id"]
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LogManager.method_info(f"请求停止 [{udid}] 线程ID={tid}", "task")
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if not thread.is_alive():
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cls._tasks.pop(udid, None)
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return 200, "已结束"
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# 协作式停止
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try:
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event.set()
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except Exception as e:
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LogManager.method_error(f"[{udid}] 设置停止事件失败: {e}", "task")
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def _wait_stop():
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# 先给 1 秒高频检查机会（很多 I/O 点会在这个窗口立刻感知到）
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t0 = time.time()
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while time.time() - t0 < 1.0 and thread.is_alive():
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time.sleep(0.05)
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# 再进入原有的 join 窗口
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thread.join(timeout=stop_timeout)
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if thread.is_alive():
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LogManager.method_info(f"[{udid}] 协作超时 -> 尝试强杀", "task")
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try:
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_async_raise(tid) # 兜底：依然保留你的策略
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except Exception as e:
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LogManager.method_error(f"[{udid}] 强杀触发失败: {e}", "task")
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thread.join(timeout=kill_timeout)
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if not thread.is_alive():
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LogManager.method_info(f"[{udid}] 停止成功", "task")
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else:
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LogManager.method_error(f"[{udid}] 停止失败（线程卡死），已清理占位", "task")
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with cls._lock:
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cls._tasks.pop(udid, None)
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threading.Thread(target=_wait_stop, daemon=True).start()
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return 200, "停止请求已提交"
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@classmethod
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def _force_stop_locked(cls, udid: str):
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obj = cls._tasks.get(udid)
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if not obj:
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return
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try:
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event = obj["event"]
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event.set()
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obj["thread"].join(timeout=2)
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if obj["thread"].is_alive():
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_async_raise(obj["id"])
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obj["thread"].join(timeout=1)
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except Exception as e:
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LogManager.method_error(f"[{udid}] 强制停止失败: {e}", "task")
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finally:
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cls._tasks.pop(udid, None)
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@classmethod
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def batch_stop(cls, ids: List[str]) -> Tuple[int, str]:
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failed = []
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with ThreadPoolExecutor(max_workers=4) as executor:
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futures = {executor.submit(cls.stop, udid): udid for udid in ids}
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for future in as_completed(futures):
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udid = futures[future]
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try:
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code, msg = future.result()
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except Exception as e:
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LogManager.method_error(f"[{udid}] stop 调用异常: {e}", "task")
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failed.append(udid)
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continue
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if code != 200:
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failed.append(udid)
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if failed:
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return 207, f"部分任务停止失败: {failed}"
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return 200, "全部停止请求已提交" |