临时提交

Module/DeviceInfo.py

@@ -71,6 +71,17 @@ def _pick_free_port(low: int = 20000, high: int = 48000) -> int:
 
 
 class DeviceInfo:
+    _instance = None
+    _instance_lock = threading.Lock()
+
+    def __new__(cls, *args, **kwargs):
+        # 双重检查锁，确保线程安全单例
+        if not cls._instance:
+            with cls._instance_lock:
+                if not cls._instance:
+                    cls._instance = super().__new__(cls)
+        return cls._instance
+
     # ---- 端口分配：加一个最小的“保留池”，避免并发选到同一个端口 ----
     def _alloc_port(self) -> int:
         with self._lock:
@@ -105,6 +116,10 @@ class DeviceInfo:
     WDA_READY_TIMEOUT = float(os.getenv("WDA_READY_TIMEOUT", "35.0"))
 
     def __init__(self) -> None:
+        # 防止多次初始化（因为 __init__ 每次调用 DeviceInfo() 都会执行）
+        if getattr(self, "_initialized", False):
+            return
+
         self._lock = threading.RLock()
         self._models: Dict[str, DeviceModel] = {}
         self._iproxy: Dict[str, subprocess.Popen] = {}