openpilot v0.9.7

common/utils.py

@@ -0,0 +1,23 @@
+from collections.abc import Callable
+from functools import lru_cache
+from typing import TypeVar
+
+
+_RT = TypeVar("_RT")
+
+
+class Freezable:
+  _frozen: bool = False
+
+  def freeze(self):
+    if not self._frozen:
+      self._frozen = True
+
+  def __setattr__(self, *args, **kwargs):
+    if self._frozen:
+      raise Exception("cannot modify frozen object")
+    super().__setattr__(*args, **kwargs)
+
+
+def cache(user_function: Callable[..., _RT], /) -> Callable[..., _RT]:
+  return lru_cache(maxsize=None)(user_function)