pitrou commented on code in PR #36489:
URL: https://github.com/apache/arrow/pull/36489#discussion_r1260743743
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cpp/src/arrow/c/bridge.h:
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@@ -166,6 +166,140 @@ Result<std::shared_ptr<RecordBatch>>
ImportRecordBatch(struct ArrowArray* array,
/// @}
+/// \defgroup c-data-device-interface Functions for working with the C data
device
+/// interface.
+///
+/// @{
+
+/// \brief EXPERIMENTAL: Type for freeing a sync event
+///
+/// If synchronization is necessary for accessing the data on a device,
+/// a pointer to an event needs to be passed when exporting the device
+/// array. It's the responsibility of the release function for the array
+/// to release the event.
+using ReleaseEventFunc = void (*)(void*);
Review Comment:
Erm, can this be `std::function<void(void*)>` instead? We are not limited to
C types here.
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