Module append_vec

Persistent storage for accounts.

For more information, see:

https://docs.solanalabs.com/implemented-proposals/persistent-account-storage

Structs

• APPEND_VEC_MMAPPED_FILES_DIRTY
• APPEND_VEC_MMAPPED_FILES_OPEN
• APPEND_VEC_OPEN_AS_FILE_IO
• AppendVec
  A thread-safe, file-backed block of memory used to store Account instances. Append operations are serialized such that only one thread updates the internal append_lock at a time. No restrictions are placed on reading. That is, one may read items from one thread while another is appending new items.
• AppendVecStoredAccountMeta
  References to account data stored elsewhere. Getting an Account requires cloning (see StoredAccountMeta::clone_account()).

Enums

• AppendVecError
  An enum for AppendVec related errors.

Constants

• MAXIMUM_APPEND_VEC_FILE_SIZE
• STORE_META_OVERHEAD
  size of the fixed sized fields in an append vec we need to add data len and align it to get the actual stored size

Functions

• aligned_stored_size
  Returns the size this item will take to store plus possible alignment padding bytes before the next entry. fixed-size portion of per-account data written plus ‘data_len’, aligned to next boundary