Rename and use --max-heap-pages parameter (#1666)

substrate/core/service/src/config.rs

@@ -67,6 +67,8 @@ pub struct Configuration<C, G: Serialize + DeserializeOwned + BuildStorage> {
 	pub rpc_ws: Option<SocketAddr>,
 	/// Telemetry service URL. `None` if disabled.
 	pub telemetry_url: Option<String>,
+	/// The default number of 64KB pages to allocate for Wasm execution
+	pub default_heap_pages: Option<u64>,
 }
 
 impl<C: Default, G: Serialize + DeserializeOwned + BuildStorage> Configuration<C, G> {
@@ -92,6 +94,7 @@ impl<C: Default, G: Serialize + DeserializeOwned + BuildStorage> Configuration<C
 			rpc_http: None,
 			rpc_ws: None,
 			telemetry_url: None,
+			default_heap_pages: None,
 		};
 		configuration.network.boot_nodes = configuration.chain_spec.boot_nodes().to_vec();
 		configuration.telemetry_url = configuration.chain_spec.telemetry_url().map(str::to_owned);

substrate/core/service/src/lib.rs

@@ -113,7 +113,7 @@ pub struct Service<Components: components::Components> {
 pub fn new_client<Factory: components::ServiceFactory>(config: &FactoryFullConfiguration<Factory>)
 	-> Result<Arc<ComponentClient<components::FullComponents<Factory>>>, error::Error>
 {
-	let executor = NativeExecutor::new();
+	let executor = NativeExecutor::new(config.default_heap_pages);
 	let (client, _) = components::FullComponents::<Factory>::build_client(
 		config,
 		executor,
@@ -132,7 +132,7 @@ impl<Components: components::Components> Service<Components> {
 		let (signal, exit) = ::exit_future::signal();
 
 		// Create client
-		let executor = NativeExecutor::new();
+		let executor = NativeExecutor::new(config.default_heap_pages);
 
 		let mut keystore = Keystore::open(config.keystore_path.as_str().into())?;