mirror of
https://github.com/AstrBotDevs/AstrBot
synced 2026-07-16 01:40:15 +08:00
57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
import asyncio
|
|
import threading
|
|
import weakref
|
|
from collections import defaultdict
|
|
from contextlib import asynccontextmanager
|
|
|
|
|
|
class _PerLoopSessionLockManager:
|
|
"""Per-event-loop session lock manager; keeps original simple semantics."""
|
|
|
|
def __init__(self) -> None:
|
|
self._locks: dict[str, asyncio.Lock] = defaultdict(asyncio.Lock)
|
|
self._lock_count: dict[str, int] = defaultdict(int)
|
|
self._access_lock = asyncio.Lock()
|
|
|
|
@asynccontextmanager
|
|
async def acquire_lock(self, session_id: str):
|
|
async with self._access_lock:
|
|
lock = self._locks[session_id]
|
|
self._lock_count[session_id] += 1
|
|
|
|
try:
|
|
async with lock:
|
|
yield
|
|
finally:
|
|
async with self._access_lock:
|
|
self._lock_count[session_id] -= 1
|
|
if self._lock_count[session_id] == 0:
|
|
self._locks.pop(session_id, None)
|
|
self._lock_count.pop(session_id, None)
|
|
|
|
|
|
class SessionLockManager:
|
|
"""Thread-safe session lock manager with per-event-loop isolation."""
|
|
|
|
def __init__(self) -> None:
|
|
self._state_guard = threading.Lock()
|
|
self._loop_managers: weakref.WeakKeyDictionary[
|
|
asyncio.AbstractEventLoop,
|
|
_PerLoopSessionLockManager,
|
|
] = weakref.WeakKeyDictionary()
|
|
|
|
def _get_loop_manager(self) -> _PerLoopSessionLockManager:
|
|
"""Get the lock manager for the current event loop."""
|
|
loop = asyncio.get_running_loop()
|
|
with self._state_guard:
|
|
return self._loop_managers.setdefault(loop, _PerLoopSessionLockManager())
|
|
|
|
@asynccontextmanager
|
|
async def acquire_lock(self, session_id: str):
|
|
manager = self._get_loop_manager()
|
|
async with manager.acquire_lock(session_id):
|
|
yield
|
|
|
|
|
|
session_lock_manager = SessionLockManager()
|