Method resources_required

crates/wasmtime/src/runtime/module.rs:965–987

Returns a summary of the resources required to instantiate this [`Module`]. Potential uses of the returned information: Determining whether your pooling allocator configuration supports instantiating this module. Deciding how many of which `Module` you want to instantiate within a fixed amount of resources, e.g. determining whether to create 5 instances of module X or 10 instances of module Y.

(&self)

    /// # Ok(()) }
    /// ```
    pub fn resources_required(&self) -> ResourcesRequired {
        let em = self.env_module();
        let num_memories = u32::try_from(em.num_defined_memories()).unwrap();
        let max_initial_memory_size = em
            .memories
            .values()
            .skip(em.num_imported_memories)
            .map(|memory| memory.limits.min)
            .max();
        let num_tables = u32::try_from(em.num_defined_tables()).unwrap();
        let max_initial_table_size = em
            .tables
            .values()
            .skip(em.num_imported_tables)
            .map(|table| table.limits.min)
            .max();
        ResourcesRequired {
            num_memories,
            max_initial_memory_size,
            num_tables,
            max_initial_table_size,
        }
    }

    /// Returns the range of bytes in memory where this module's compilation
    /// image resides.