iOSAI/Utils/ThreadManager.py

import ctypes
import threading
import time
import os
import signal
from concurrent.futures import ThreadPoolExecutor, as_completed
from typing import Dict, Tuple, List, Optional

from Utils.LogManager import LogManager

try:
    import psutil  # 可选：用来级联杀子进程
except Exception:
    psutil = None


def _async_raise(tid: int, exc_type=SystemExit) -> bool:
    """向指定线程异步注入异常（仅对 Python 解释器栈可靠）"""
    if not tid:
        LogManager.method_error("强杀失败: 线程ID为空", "task")
        return False
    try:
        res = ctypes.pythonapi.PyThreadState_SetAsyncExc(
            ctypes.c_long(tid), ctypes.py_object(exc_type)
        )
        if res == 0:
            LogManager.method_info(f"线程 {tid} 不存在", "task")
            return False
        elif res > 1:
            ctypes.pythonapi.PyThreadState_SetAsyncExc(ctypes.c_long(tid), 0)
            LogManager.method_info(f"线程 {tid} 命中多个线程，已回滚", "task")
            return False
        return True
    except Exception as e:
        LogManager.method_error(f"强杀线程失败: {e}", "task")
        return False


class ThreadManager:
    """
    维持你的 add(udid, thread, event) 调用方式不变。
    - 线程统一设为 daemon
    - 停止：协作 -> 多次强杀注入 -> zombie 放弃占位
    - 可选：注册并级联杀掉业务里创建的外部子进程
    """
    _tasks: Dict[str, Dict] = {}
    _lock = threading.RLock()

    @classmethod
    def _cleanup_if_dead(cls, udid: str):
        obj = cls._tasks.get(udid)
        if obj:
            th = obj.get("thread")
            if th and not th.is_alive():
                cls._tasks.pop(udid, None)
                LogManager.method_info(f"检测到 [{udid}] 线程已结束，自动清理。", "task")

    @classmethod
    def register_child_pid(cls, udid: str, pid: int):
        """业务里如果起了 adb/scrcpy/ffmpeg 等外部进程，请在启动后调用这个登记，便于 stop 时一起杀掉。"""
        with cls._lock:
            obj = cls._tasks.get(udid)
            if not obj:
                return
            pids: set = obj.setdefault("child_pids", set())
            pids.add(int(pid))
            LogManager.method_info(f"[{udid}] 记录子进程 PID={pid}", "task")

    @classmethod
    def _kill_child_pids(cls, udid: str, child_pids: Optional[set]):
        if not child_pids:
            return
        for pid in list(child_pids):
            try:
                if psutil:
                    if psutil.pid_exists(pid):
                        proc = psutil.Process(pid)
                        # 先温柔 terminate，再等 0.5 秒，仍活则 kill；并级联子进程
                        for c in proc.children(recursive=True):
                            try:
                                c.terminate()
                            except Exception:
                                pass
                        proc.terminate()
                        gone, alive = psutil.wait_procs([proc], timeout=0.5)
                        for a in alive:
                            try:
                                a.kill()
                            except Exception:
                                pass
                else:
                    if os.name == "nt":
                        os.system(f"taskkill /PID {pid} /T /F >NUL 2>&1")
                    else:
                        try:
                            os.kill(pid, signal.SIGTERM)
                            time.sleep(0.2)
                            os.kill(pid, signal.SIGKILL)
                        except Exception:
                            pass
                LogManager.method_info(f"[{udid}] 已尝试结束子进程 PID={pid}", "task")
            except Exception as e:
                LogManager.method_error(f"[{udid}] 结束子进程 {pid} 异常: {e}", "task")

    @classmethod
    def add(cls, udid: str, thread: threading.Thread, event: threading.Event, force: bool = False) -> Tuple[int, str]:
        with cls._lock:
            cls._cleanup_if_dead(udid)
            old = cls._tasks.get(udid)
            if old and old["thread"].is_alive():
                if not force:
                    return 1001, "当前设备已存在任务"
                LogManager.method_info(f"[{udid}] 检测到旧任务，尝试强制停止", "task")
                cls._force_stop_locked(udid)

            # 强制守护线程，防止进程被挂死
            try:
                thread.daemon = True
            except Exception:
                pass

            try:
                thread.start()
                # 等 ident 初始化
                for _ in range(20):
                    if thread.ident:
                        break
                    time.sleep(0.02)

                cls._tasks[udid] = {
                    "id": thread.ident,
                    "thread": thread,
                    "event": event,
                    "start_time": time.time(),
                    "state": "running",
                    "child_pids": set(),
                }
                LogManager.method_info(f"创建任务成功 [{udid}]，线程ID={thread.ident}", "task")
                return 200, "创建成功"
            except Exception as e:
                LogManager.method_error(f"线程启动失败: {e}", "task")
                return 1002, f"线程启动失败: {e}"

    @classmethod
    def stop(cls, udid: str, stop_timeout: float = 5.0, kill_timeout: float = 2.0) -> Tuple[int, str]:
        with cls._lock:
            obj = cls._tasks.get(udid)
            if not obj:
                return 200, "任务不存在"

            thread = obj["thread"]
            event = obj["event"]
            tid = obj["id"]
            child_pids = set(obj.get("child_pids") or [])

            LogManager.method_info(f"请求停止 [{udid}] 线程ID={tid}", "task")

            if not thread.is_alive():
                cls._tasks.pop(udid, None)
                return 200, "已结束"

            obj["state"] = "stopping"

            # 先把 event 打开，给协作退出的机会
            try:
                event.set()
            except Exception as e:
                LogManager.method_error(f"[{udid}] 设置停止事件失败: {e}", "task")

        def _wait_stop():
            # 高频窗口 1s（很多 I/O 点会在这个窗口立刻感知到）
            t0 = time.time()
            while time.time() - t0 < 1.0 and thread.is_alive():
                time.sleep(0.05)

            # 子进程先收拾（避免后台外部程序继续卡死）
            cls._kill_child_pids(udid, child_pids)

            # 正常 join 窗口
            if thread.is_alive():
                thread.join(timeout=stop_timeout)

            # 仍活着 → 多次注入 SystemExit
            if thread.is_alive():
                LogManager.method_info(f"[{udid}] 协作超时 -> 尝试强杀注入", "task")
                for i in range(6):
                    ok = _async_raise(tid, SystemExit)
                    # 给解释器一些调度时间
                    time.sleep(0.06)
                    if not thread.is_alive():
                        break

                # 最后等待 kill_timeout
                if thread.is_alive():
                    thread.join(timeout=kill_timeout)

            with cls._lock:
                if not thread.is_alive():
                    LogManager.method_info(f"[{udid}] 停止成功", "task")
                    cls._tasks.pop(udid, None)
                else:
                    # 彻底杀不掉：标记 zombie、释放占位
                    LogManager.method_error(f"[{udid}] 停止失败（线程卡死），标记为 zombie，释放占位", "task")
                    obj = cls._tasks.get(udid)
                    if obj:
                        obj["state"] = "zombie"
                        cls._tasks.pop(udid, None)

        threading.Thread(target=_wait_stop, daemon=True).start()
        return 200, "停止请求已提交"

    @classmethod
    def _force_stop_locked(cls, udid: str):
        """持锁情况下的暴力停止（用于 add(force=True) 覆盖旧任务）"""
        obj = cls._tasks.get(udid)
        if not obj:
            return
        th = obj["thread"]
        tid = obj["id"]
        event = obj["event"]
        child_pids = set(obj.get("child_pids") or [])
        try:
            try:
                event.set()
            except Exception:
                pass
            cls._kill_child_pids(udid, child_pids)
            th.join(timeout=1.5)
            if th.is_alive():
                for _ in range(6):
                    _async_raise(tid, SystemExit)
                    time.sleep(0.05)
                    if not th.is_alive():
                        break
                th.join(timeout=0.8)
        except Exception as e:
            LogManager.method_error(f"[{udid}] 强制停止失败: {e}", "task")
        finally:
            cls._tasks.pop(udid, None)

    @classmethod
    def status(cls, udid: str) -> Dict:
        with cls._lock:
            obj = cls._tasks.get(udid)
            if not obj:
                return {"exists": False}
            o = {
                "exists": True,
                "state": obj.get("state"),
                "start_time": obj.get("start_time"),
                "thread_id": obj.get("id"),
                "alive": obj["thread"].is_alive(),
                "child_pids": list(obj.get("child_pids") or []),
            }
            return o

    @classmethod
    def batch_stop(cls, ids: List[str]) -> Tuple[int, str]:
        failed = []
        with ThreadPoolExecutor(max_workers=4) as executor:
            futures = {executor.submit(cls.stop, udid): udid for udid in ids}
            for future in as_completed(futures):
                udid = futures[future]
                try:
                    code, msg = future.result()
                except Exception as e:
                    LogManager.method_error(f"[{udid}] stop 调用异常: {e}", "task")
                    failed.append(udid)
                    continue
                if code != 200:
                    failed.append(udid)
        if failed:
            return 207, f"部分任务停止失败: {failed}"
        return 200, "全部停止请求已提交"