Class Memory

crates/environ/src/types.rs:2174–2187

/// WebAssembly linear memory.
#[derive(Debug, Clone, Copy, Hash, Eq, PartialEq, Serialize, Deserialize)]
pub struct Memory {
    /// The type of the index used to access the memory.
    pub idx_type: IndexType,
    /// The limits constrain the minimum and optionally the maximum size of a memory.
    /// The limits are given in units of page size.
    pub limits: Limits,
    /// Whether the memory may be shared between multiple threads.
    pub shared: bool,
    /// The log2 of this memory's page size, in bytes.
    ///
    /// By default the page size is 64KiB (0x10000; 2**16; 1<<16; 65536) but the
    /// custom-page-sizes proposal allows opting into a page size of `1`.
    pub page_size_log2: u8,
}

/// Maximum size, in bytes, of 32-bit memories (4G)
pub const WASM32_MAX_SIZE: u64 = 1 << 32;