Removed useless lock.

kanta/persistence.py

@@ -5,7 +5,6 @@ from __future__ import annotations
 import asyncio
 import copy
 import logging
-import threading
 from collections import deque
 from collections.abc import Callable
 from datetime import UTC, datetime
@@ -31,7 +30,6 @@ class PersistenceMixin:
     flush_failed: bool
     statedict: dict[str, Any]
     pending_changes: deque[ChangeRecord]
-    pending_lock: threading.Lock
     snapshot: SnapshotState
     serializer: Serializer
     framer: Framer
@@ -55,7 +53,6 @@ class PersistenceMixin:
         self.flush_failed = False
         self.statedict = {}
         self.pending_changes = deque()
-        self.pending_lock = threading.Lock()
         self.serializer = serializer or JsonSerializer()
         self.framer = self.serializer.framer_cls()
         self.snapshot = SnapshotState(serializer=self.serializer, framer=self.framer)
@@ -139,7 +136,6 @@ class PersistenceMixin:
             m=m,
             diff=diff,
         )
-        with self.pending_lock:
         self.pending_changes.append(record)
         self.statedict = copy.deepcopy(current)
         if m is not None:
@@ -158,7 +154,6 @@ class PersistenceMixin:
         if self.flush_failed:
             return
 
-        with self.pending_lock:
         if not self.pending_changes:
             return
         changes_to_write = list(self.pending_changes)
@@ -178,13 +173,11 @@ class PersistenceMixin:
                 records.append(framed)
                 running_size += len(framed)
             if not records:
-                with self.pending_lock:
                 self.pending_changes.clear()
                 return
 
             self.file.write(b"".join(records))
             self.snapshot.record_changes(len(records))
-            with self.pending_lock:
             for _ in changes_to_write:
                 self.pending_changes.popleft()
         except OSError as e:
@@ -208,7 +201,6 @@ class PersistenceMixin:
         if self.flush_failed:
             return
 
-        with self.pending_lock:
         if not self.pending_changes:
             return
         changes_to_write = list(self.pending_changes)
@@ -228,13 +220,11 @@ class PersistenceMixin:
                 records.append(framed)
                 running_size += len(framed)
             if not records:
-                with self.pending_lock:
                 self.pending_changes.clear()
                 return
 
             await asyncio.to_thread(self.file.write, b"".join(records))
             self.snapshot.record_changes(len(records))
-            with self.pending_lock:
             for _ in changes_to_write:
                 self.pending_changes.popleft()
         except OSError as e: