static GLOBAL_POOL: OnceLock<Option<Pool>>Expand description
Process-wide buffer pool shared by every spill consumer in the process.
Construction reserves virtual address space only: 1 TiB per chunk size
class plus 1 TiB per extent-arena class, tens of TiB in total. Physical
memory is paid per resident chunk. On the rare platforms or
configurations where the reservation fails, the pool is permanently
unavailable for this process and apply_pool_config reports that by
returning false.