Merge pull request #1195 from python-trio/memory-channel-state-slots

Use slots for channel state and statistics.
python-trio · Aug 20, 2019 · ce7c40c · ce7c40c
2 parents 9496a59 + 8bafbb2
commit ce7c40c
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diff --git a/newsfragments/1195.feature.rst b/newsfragments/1195.feature.rst
@@ -0,0 +1 @@
+Use slots for memory channel state and statistics which should make memory channels slightly smaller and faster.
diff --git a/trio/_channel.py b/trio/_channel.py
@@ -69,7 +69,7 @@ def open_memory_channel(max_buffer_size):
     )
 
 
-@attr.s(frozen=True)
+@attr.s(frozen=True, slots=True)
 class MemoryChannelStats:
     current_buffer_used = attr.ib()
     max_buffer_size = attr.ib()
@@ -79,7 +79,7 @@ class MemoryChannelStats:
     tasks_waiting_receive = attr.ib()
 
 
-@attr.s
+@attr.s(slots=True)
 class MemoryChannelState:
     max_buffer_size = attr.ib()
     data = attr.ib(factory=deque)
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Use slots for memory channel state and statistics which should make memory channels slightly smaller and faster.