pub(super) struct RWUTable {
    live_nodes: usize,
    vars: usize,
    words: Vec<u8>,
    live_node_words: usize,
}
Expand description

Conceptually, this is like a Vec<Vec<RWU>>. But the number of RWU`s can get very large, so it uses a more compact representation.

Fields

live_nodes: usize

Total number of live nodes.

vars: usize

Total number of variables.

words: Vec<u8>

A compressed representation of RWUs.

Each word represents 2 different RWUs packed together. Each packed RWU is stored in 4 bits: a reader bit, a writer bit, a used bit and a padding bit.

The data for each live node is contiguous and starts at a word boundary, so there might be an unused space left.

live_node_words: usize

Number of words per each live node.

Implementations

Size of packed RWU in bits.

Size of a word in bits.

Number of packed RWUs that fit into a single word.

Sets dst to the union of dst and src, returns true if dst was changed.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.

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: 48 bytes