Flushes the write buffer to disk

Gets the active bits for a specific twig # Arguments `twig_id` - ID of the twig to get active bits for # Returns Reference to the active bits for th

Generates encryption ciphers for secure storage. # Arguments `aes_keys` - Optional 96-byte key material for AES-GCM encryption # Returns A tuple con

Gets the entry file size for a shard. # Arguments `shard_id` - ID of the shard # Returns The current entry file size # Performance - Direct access

Returns the current sizes of the entry and twig files # Returns A tuple of (entry_file_size, twig_file_size) in bytes

get key_hash from a SN2KH record

Gets the last pruned twig information for a shard. # Arguments `shard_id` - ID of the shard # Returns A tuple containing: - ID of the last pruned tw

Gets the oldest active serial number for a shard. # Arguments `shard_id` - ID of the shard # Returns The oldest active serial number # Performance

Gets the root hash for a shard. # Arguments `shard_id` - ID of the shard # Returns The current root hash # Performance - Direct access - No disk I/

Creates a new boxed buffer of size BIG_BUF_SIZE. # Returns A boxed slice initialized with zeros

Returns the starting position of the next key hash in the serialized data.

Returns the length of the payload data (excluding padding and tags).

Advances the LFSR by n steps and returns the lowest n bits. # Arguments `n` - Number of steps to advance and bits to return # Returns The lowest n b

Read at most `num_bytes` from file at `offset` to fill `buf` # Parameters - `buf`: a vector to be filled - `num_bytes`: the wanted number of bytes t

Reads a 64-bit unsigned integer from a buffer. # Arguments `buf` - The buffer to read from. `offset` - The byte offset within the buffer. # Returns

Remove the largest value and decrement largest_id.

Rotate to a new segment. The old `current_file` is dropped (no longer needed - reading uses O_DIRECT from slots). The new segment gets both O_DIRECT

Sets the encryption keys for the database. # Arguments `keys` - 96-byte array containing the encryption keys: - Bytes 0-31: Shard encryption keys - B

Sets the activation status of an entry # Arguments `sn` - Serial number of the entry to update `active` - New activation status

Sets the root hash for a shard. # Arguments `shard_id` - ID of the shard `h` - New root hash # State Changes - Updates root hash - Affects tree stat

Splits a cache position into its component buffer index and offset. # Arguments `idx_and_offset` - The combined cache position value # Returns A t

Synchronizes the level 3 (10) node in the active bits Merkle tree

Synchronizes a range of nodes in a twig's Merkle tree This function updates the internal nodes of the tree after leaf changes. # Arguments `mtree` -

Synchronizes the twig root by combining the left_root and active_bits_mtl3

Helper to sync tree hashes after building (same as in test_proof.rs)

Compact the entry file

Sets the indexer for the EntryMutator. # Arguments `indexer` - The indexer to use for tracking entry positions

Compares a dug entry with a record for testing. # Arguments `rec` - Optional operation record to compare against `entry_bz` - Entry to compare `comp_

Compares a new entry with a record for testing. # Arguments `rec` - Optional operation record to compare against `entry` - Entry to compare `dsn_list

Compares an old entry with a record for testing. # Arguments `rec` - Optional operation record to compare against `entry_bz` - Entry to compare

Compares changes to a previous entry with a record for testing. # Arguments `rec` - Optional operation record to compare against `entry` - Entry to c

Compares a previous entry with a record for testing. # Arguments `rec` - Optional operation record to compare against `entry_bz` - Entry to compare

Compares a put entry with a record for testing. # Arguments `rec` - Optional operation record to compare against `entry` - Entry to compare `dsn_list

ensure 'cur_record' is not erased

Marks an entry as active # Arguments `sn` - Serial number of the entry to activate

Adds the integer `value` to the set. # Arguments `value` - The integer to add to the set. # Returns `true` if the value was added to the set, `fal

Adds an operation from an existing operation record. # Arguments `rec` - The operation record to add # Panics If the shard ID derived from the key

Adds a shard to the JobManager. # Arguments `update_buffer` - Buffer for updates `entry_file` - File containing entries `done_chan` - Channel for com

Allocates a new big buffer, either from the free list or by creating a new one. # Returns A boxed BigBuf either from the free list or newly allocate

Apply all operations in a block to the bitmap model. This walks over all `ChangeSet`s in the given `task_list` and updates the bitmaps based on the o

Closes the twig file

Deletes a key-value pair from the database. # Arguments `ebw` - Entry buffer writer guard `key_hash` - Hash of the key to delete `key` - Key to delet

Serializes a list of edge nodes to bytes The format for each edge node is: - 8 bytes: Position (level and index) - 32 bytes: Hash value # Arguments