Struct SerializedDepGraph 

pub struct SerializedDepGraph {
    nodes: IndexVec<SerializedDepNodeIndex, DepNode>,
    value_fingerprints: IndexVec<SerializedDepNodeIndex, Fingerprint>,
    edge_list_indices: IndexVec<SerializedDepNodeIndex, EdgeHeader>,
    edge_list_data: Vec<u8>,
    index: Vec<UnhashMap<PackedFingerprint, SerializedDepNodeIndex>>,
    session_count: u64,
}

Data for use when recompiling the current crate.

There may be unused indices with DepKind::Null in this graph due to batch allocation of indices to threads.

Fields

nodes: IndexVec<SerializedDepNodeIndex, DepNode>

The set of all DepNodes in the graph

value_fingerprints: IndexVec<SerializedDepNodeIndex, Fingerprint>

A value fingerprint associated with each DepNode in Self::nodes, typically a hash of the value returned by the node’s query in the previous incremental-compilation session.

Some nodes don’t have a meaningful value hash (e.g. queries with no_hash), so they store a dummy value here instead (e.g. Fingerprint::ZERO).

edge_list_indices: IndexVec<SerializedDepNodeIndex, EdgeHeader>

For each DepNode, stores the list of edges originating from that DepNode. Encoded as a [start, end) pair indexing into edge_list_data, which holds the actual DepNodeIndices of the target nodes.

edge_list_data: Vec<u8>

A flattened list of all edge targets in the graph, stored in the same varint encoding that we use on disk. Edge sources are implicit in edge_list_indices.

index: Vec<UnhashMap<PackedFingerprint, SerializedDepNodeIndex>>

For each dep kind, stores a map from key fingerprints back to the index of the corresponding node. This is the inverse of nodes.

session_count: u64

The number of previous compilation sessions. This is used to generate unique anon dep nodes per session.

Implementations

impl SerializedDepGraph

pub fn edge_targets_from( &self, source: SerializedDepNodeIndex, ) -> impl Iterator<Item = SerializedDepNodeIndex> + Clone

pub fn index_to_node(&self, dep_node_index: SerializedDepNodeIndex) -> &DepNode

pub fn node_to_index_opt( &self, dep_node: &DepNode, ) -> Option<SerializedDepNodeIndex>

pub fn value_fingerprint_for_index( &self, dep_node_index: SerializedDepNodeIndex, ) -> Fingerprint

pub fn node_count(&self) -> usize

pub fn session_count(&self) -> u64

impl SerializedDepGraph

pub fn decode(d: &mut MemDecoder<'_>) -> Arc<SerializedDepGraph>

Trait Implementations

impl Debug for SerializedDepGraph

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SerializedDepGraph

fn default() -> SerializedDepGraph

Returns the “default value” for a type.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 128 bytes