Update mineru/cli/fast_api.py

Co-authored-by: Copilot <[email protected]>

Author: Flynn-Zh

mineru/cli/fast_api.py

@@ -28,13 +28,17 @@
 # 并发控制依赖函数
 async def limit_concurrency():
     if _request_semaphore is not None:
-        if _request_semaphore.locked():
+        try:
+            await asyncio.wait_for(_request_semaphore.acquire(), timeout=0.0)
+        except asyncio.TimeoutError:
             raise HTTPException(
                 status_code=503,
                 detail="Server is at maximum capacity. Please try again later."
             )
-        async with _request_semaphore:
+        try:
             yield
+        finally:
+            _request_semaphore.release()
     else:
         yield