Implement PV disconnection in release methods and add disconnect methods in PV classes

slac_timing/bsa_buffer.py

@@ -81,6 +81,7 @@ def _configure(self) -> None:
     def release(self) -> None:
         self._require_reserved("release")
         self.pvs.free.put(1)
+        self._disconnect_pvs()
 
     # --- Acquisition ---
 

slac_timing/buffer.py

@@ -1,3 +1,4 @@
+import gc
 import time as _time
 from abc import ABC, abstractmethod
 from typing import Optional
@@ -67,6 +68,13 @@ def release(self) -> None:
         """Release the buffer back to the system."""
         ...
 
+    def _disconnect_pvs(self) -> None:
+        """Disconnect all PV connections held by this buffer."""
+        if self._pvs is not None:
+            self._pvs.disconnect()
+            self._pvs = None
+            gc.collect()  # Force garbage collection to clean up PVs
+
     def is_reserved(self) -> bool:
         return self.number is not None and self.number != 0
 

slac_timing/event_definition.py

@@ -102,6 +102,7 @@ def _configure(self) -> None:
     def release(self) -> None:
         self._require_reserved("release")
         self.pvs.free.put(1)
+        self._disconnect_pvs()
 
     # --- Acquisition ---
 

slac_timing/pvs.py

@@ -39,6 +39,11 @@ def get_many(self, **kwargs) -> list:
         """Batch-read all PVs in this group via epics.caget_many."""
         return epics.caget_many(self.pvnames, **kwargs)
 
+    def disconnect(self):
+        for pv in self._pvs.values():
+            pv.disconnect()
+        self._pvs.clear()
+
 
 # --- System PV Containers (reservation protocol) ---
 
@@ -77,6 +82,13 @@ def __init__(self, prefix: str):
         self.free = LazyPV(f"{prefix}:FREE")
         self.cnt = LazyPV(f"{prefix}:CNT")
 
+    def disconnect(self):
+        for attr in vars(self).values():
+            if isinstance(attr, LazyPV):
+                attr.disconnect()
+            elif isinstance(attr, IndexedPVGroup):
+                attr.disconnect()
+
 
 class BSABufferPVs(BufferPVs):
     """PVs specific to SC linac BSA buffers."""