From 8015ed02f252c9eef75ca23ea6010394c6ee1827 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Sat, 8 Jul 2023 12:00:40 -1000
Subject: [PATCH 1/3] feat: improve incoming data processing performance

- Make a few more classes that do not need dynamic attributes slotted
---
 src/zeroconf/_core.py              | 12 ++++++++++++
 src/zeroconf/_logger.py            |  1 +
 src/zeroconf/_services/browser.py  | 22 +++++++++++++++++++++-
 src/zeroconf/_services/registry.py |  2 ++
 4 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/src/zeroconf/_core.py b/src/zeroconf/_core.py
index 1f74dcd5e..ab8e72e52 100644
--- a/src/zeroconf/_core.py
+++ b/src/zeroconf/_core.py
@@ -151,6 +151,18 @@ def _make_wrapped_transport(transport: asyncio.DatagramTransport) -> _WrappedTra
 class AsyncEngine:
     """An engine wraps sockets in the event loop."""
 
+    __slots__ = (
+        'loop',
+        'zc',
+        'protocols',
+        'readers',
+        'senders',
+        'running_event',
+        '_listen_socket',
+        '_respond_sockets',
+        '_cleanup_timer',
+    )
+
     def __init__(
         self,
         zeroconf: 'Zeroconf',
diff --git a/src/zeroconf/_logger.py b/src/zeroconf/_logger.py
index b0e66bc90..f179078f6 100644
--- a/src/zeroconf/_logger.py
+++ b/src/zeroconf/_logger.py
@@ -38,6 +38,7 @@ def set_logger_level_if_unset() -> None:
 
 
 class QuietLogger:
+
     _seen_logs: Dict[str, Union[int, tuple]] = {}
 
     @classmethod
diff --git a/src/zeroconf/_services/browser.py b/src/zeroconf/_services/browser.py
index fef49383d..a76e98172 100644
--- a/src/zeroconf/_services/browser.py
+++ b/src/zeroconf/_services/browser.py
@@ -85,6 +85,8 @@
 class _DNSPointerOutgoingBucket:
     """A DNSOutgoing bucket."""
 
+    __slots__ = ('now', 'out', 'bytes')
+
     def __init__(self, now: float, multicast: bool) -> None:
         """Create a bucke to wrap a DNSOutgoing."""
         self.now = now
@@ -196,12 +198,14 @@ class QueryScheduler:
 
     """
 
+    __slots__ = ('_schedule_changed_event', '_types', '_next_time', '_first_random_delay_interval', '_delay')
+
     def __init__(
         self,
         types: Set[str],
         delay: int,
         first_random_delay_interval: Tuple[int, int],
-    ):
+    ) -> None:
         self._schedule_changed_event: Optional[asyncio.Event] = None
         self._types = types
         self._next_time: Dict[str, float] = {}
@@ -261,6 +265,22 @@ def process_ready_types(self, now: float) -> List[str]:
 class _ServiceBrowserBase(RecordUpdateListener):
     """Base class for ServiceBrowser."""
 
+    __slots__ = (
+        'types',
+        'zc',
+        'addr',
+        'port',
+        'multicast',
+        'question_type',
+        '_pending_handlers',
+        '_service_state_changed',
+        'query_scheduler',
+        'done',
+        '_first_request',
+        '_next_send_timer',
+        '_query_sender_task',
+    )
+
     def __init__(
         self,
         zc: 'Zeroconf',
diff --git a/src/zeroconf/_services/registry.py b/src/zeroconf/_services/registry.py
index 1c4ad0859..fd2ad5cee 100644
--- a/src/zeroconf/_services/registry.py
+++ b/src/zeroconf/_services/registry.py
@@ -33,6 +33,8 @@ class ServiceRegistry:
     the event loop as it is not thread safe.
     """
 
+    __slots__ = ("_services", "types", "servers")
+
     def __init__(
         self,
     ) -> None:

From 58afab9fa43b9efd7d8d996a6bffe5f0a80fcbca Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Sat, 8 Jul 2023 12:21:30 -1000
Subject: [PATCH 2/3] fix: add missing ones in services

---
 src/zeroconf/_services/__init__.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/zeroconf/_services/__init__.py b/src/zeroconf/_services/__init__.py
index 2882fce6a..968b5dafe 100644
--- a/src/zeroconf/_services/__init__.py
+++ b/src/zeroconf/_services/__init__.py
@@ -46,6 +46,9 @@ def update_service(self, zc: 'Zeroconf', type_: str, name: str) -> None:
 
 
 class Signal:
+
+    __slots__ = ('_handlers',)
+
     def __init__(self) -> None:
         self._handlers: List[Callable[..., None]] = []
 
@@ -59,6 +62,9 @@ def registration_interface(self) -> 'SignalRegistrationInterface':
 
 
 class SignalRegistrationInterface:
+
+    __slots__ = ('_handlers',)
+
     def __init__(self, handlers: List[Callable[..., None]]) -> None:
         self._handlers = handlers
 

From 6b2c3bae743bdc3bc19fb2a8ff003c207fbd934b Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Sat, 8 Jul 2023 12:44:40 -1000
Subject: [PATCH 3/3] Update src/zeroconf/_logger.py

---
 src/zeroconf/_logger.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/zeroconf/_logger.py b/src/zeroconf/_logger.py
index f179078f6..b0e66bc90 100644
--- a/src/zeroconf/_logger.py
+++ b/src/zeroconf/_logger.py
@@ -38,7 +38,6 @@ def set_logger_level_if_unset() -> None:
 
 
 class QuietLogger:
-
     _seen_logs: Dict[str, Union[int, tuple]] = {}
 
     @classmethod