feat: Implement MemoryUsage for Store

CHANGELOG.md

@@ -18,6 +18,7 @@
 - [#2135](https://github.com/wasmerio/wasmer/pull/2135) [Documentation](./PACKAGING.md) for linux distribution maintainers
 
 ### Changed
+- [#2199](https://github.com/wasmerio/wasmer/pull/2199) Implement `loupe::MemoryUsage` for `wasmer::Store`.
 - [#2140](https://github.com/wasmerio/wasmer/pull/2140) Reduce the number of dependencies in the `wasmer.dll` shared library by statically compiling CRT.
 - [#2113](https://github.com/wasmerio/wasmer/pull/2113) Bump minimum supported Rust version to 1.49
 - [#2144](https://github.com/wasmerio/wasmer/pull/2144) Bump cranelift version to 0.70

Cargo.toml

@@ -69,6 +69,7 @@ criterion = "0.3"
 lazy_static = "1.4"
 wasmer-engine-dummy = { path = "tests/lib/engine-dummy" }
 tempfile = "3.1"
+loupe = "0.1"
 
 [features]
 # Don't add the compiler features in default, please add them on the Makefile

examples/tunables_limit_memory.rs

@@ -1,6 +1,8 @@
+use std::mem;
 use std::ptr::NonNull;
 use std::sync::Arc;
 
+use loupe::{MemoryUsage, MemoryUsageTracker};
 use wasmer::{
     imports,
     vm::{self, MemoryError, MemoryStyle, TableStyle, VMMemoryDefinition, VMTableDefinition},
@@ -131,6 +133,12 @@ impl<T: Tunables> Tunables for LimitingTunables<T> {
     }
 }
 
+impl<T: Tunables> MemoryUsage for LimitingTunables<T> {
+    fn size_of_val(&self, _tracker: &mut dyn MemoryUsageTracker) -> usize {
+        mem::size_of_val(self)
+    }
+}
+
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     // A Wasm module with one exported memory (min: 7 pages, max: unset)
     let wat = br#"(module (memory 7) (export "memory" (memory 0)))"#;