Module datafusion_execution::memory_pool

Manages all available memory during query execution

Modules

• proxy
  Utilities that help with tracking of memory allocations.

Structs

• FairSpillPool
  A MemoryPool that prevents spillable reservations from using more than an even fraction of the available memory sans any unspillable reservations (i.e. (pool_size - unspillable_memory) / num_spillable_reservations)
• GreedyMemoryPool
  A MemoryPool that implements a greedy first-come first-serve limit.
• MemoryConsumer
  A memory consumer that can be tracked by MemoryReservation in a MemoryPool. All allocations are registered to a particular MemoryConsumer;
• MemoryReservation
  A MemoryReservation tracks an individual reservation of a number of bytes of memory in a MemoryPool that is freed back to the pool on drop.
• UnboundedMemoryPool
  A MemoryPool that enforces no limit

Traits

• MemoryPool
  The pool of memory on which MemoryReservations record their memory reservations.

Functions

• human_readable_size
  Present size in human readable form