Make `map` and `map_with_path_builder` of sync version WALs returns a reader backed by `unsync::Arena`
Opened this issue · 1 comments
al8n commented
Suppose a sync version of sync::OrderWal
is constructed by map
or map_with_path_builder
. In that case, there is no reason to use rarena_allocator::sync::Arena
as the backend, because map
or map_with_path_builder
means that the OrderWal
cannot be modified anymore so that no data race will happen anymore.
Instance constructed by map
or map_with_path_builder
is not the same as reader
methods of sync::OrderWal
. reader
let users create a read-only view on an active log, which means the writer can still modify the active log, so a rarena_allocator::sync::Arena
is necessary for thread-safe.
al8n commented
Blocked by al8n/rarena#14