Making Mandoline apps notice when all the objects they vended are gone so that it can terminate.

mojo/services/network/network_service_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/services/network/network_service_impl.h"
 
 #include "mojo/application/public/cpp/application_connection.h"
 #include "mojo/services/network/cookie_store_impl.h"
 #include "mojo/services/network/http_server_impl.h"
 #include "mojo/services/network/net_adapters.h"
 #include "mojo/services/network/tcp_bound_socket_impl.h"
 #include "mojo/services/network/udp_socket_impl.h"
 #include "mojo/services/network/url_loader_impl.h"
 #include "mojo/services/network/web_socket_impl.h"
 
 namespace mojo {
 
-NetworkServiceImpl::NetworkServiceImpl(ApplicationConnection* connection,
-                                       NetworkContext* context)
+NetworkServiceImpl::NetworkServiceImpl(
+    ApplicationConnection* connection,
+    NetworkContext* context,
+    scoped_ptr<mojo::AppRefCount> app_refcount)
     : context_(context),
+      app_refcount_(app_refcount.Pass()),
       origin_(GURL(connection->GetRemoteApplicationURL()).GetOrigin()) {
 }
 
 NetworkServiceImpl::~NetworkServiceImpl() {
 }
 
 void NetworkServiceImpl::CreateURLLoader(InterfaceRequest<URLLoader> loader) {
   // TODO(darin): Plumb origin_. Use for CORS.
   // The loader will delete itself when the pipe is closed, unless a request is
   // in progress. In which case, the loader will delete itself when the request
   // is finished.
-  new URLLoaderImpl(context_, loader.Pass());
+  new URLLoaderImpl(context_, loader.Pass(), app_refcount_->Clone());
 }
 
 void NetworkServiceImpl::GetCookieStore(InterfaceRequest<CookieStore> store) {
-  BindToRequest(new CookieStoreImpl(context_, origin_), &store);
+  BindToRequest(new CookieStoreImpl(context_, origin_, app_refcount_->Clone()),
+                &store);
 }
 
 void NetworkServiceImpl::CreateWebSocket(InterfaceRequest<WebSocket> socket) {
-  BindToRequest(new WebSocketImpl(context_), &socket);
+  BindToRequest(new WebSocketImpl(context_, app_refcount_->Clone()), &socket);
 }
 
 void NetworkServiceImpl::CreateTCPBoundSocket(
     NetAddressPtr local_address,
     InterfaceRequest<TCPBoundSocket> bound_socket,
     const CreateTCPBoundSocketCallback& callback) {
-  scoped_ptr<TCPBoundSocketImpl> bound(new TCPBoundSocketImpl);
+  scoped_ptr<TCPBoundSocketImpl> bound(new TCPBoundSocketImpl(
+      app_refcount_->Clone()));
   int net_error = bound->Bind(local_address.Pass());
   if (net_error != net::OK) {
     callback.Run(MakeNetworkError(net_error), NetAddressPtr());
     return;
   }
   NetAddressPtr resulting_local_address(bound->GetLocalAddress());
   BindToRequest(bound.release(), &bound_socket);
   callback.Run(MakeNetworkError(net::OK), resulting_local_address.Pass());
 }
 
 void NetworkServiceImpl::CreateTCPConnectedSocket(
     NetAddressPtr remote_address,
     ScopedDataPipeConsumerHandle send_stream,
     ScopedDataPipeProducerHandle receive_stream,
     InterfaceRequest<TCPConnectedSocket> client_socket,
     const CreateTCPConnectedSocketCallback& callback) {
   // TODO(brettw) implement this. We need to know what type of socket to use
   // so we can create the right one (i.e. to pass to TCPSocket::Open) before
   // doing the connect.
   callback.Run(MakeNetworkError(net::ERR_NOT_IMPLEMENTED), NetAddressPtr());
 }
 
 void NetworkServiceImpl::CreateUDPSocket(InterfaceRequest<UDPSocket> request) {
   // The lifetime of this UDPSocketImpl is bound to that of the underlying pipe.
-  new UDPSocketImpl(request.Pass());
+  new UDPSocketImpl(request.Pass(), app_refcount_->Clone());
 }
 
 void NetworkServiceImpl::CreateHttpServer(
     NetAddressPtr local_address,
     HttpServerDelegatePtr delegate,
     const CreateHttpServerCallback& callback) {
-  HttpServerImpl::Create(local_address.Pass(), delegate.Pass(), callback);
+  HttpServerImpl::Create(local_address.Pass(), delegate.Pass(),
+                         app_refcount_->Clone(), callback);
 }
 
 }  // namespace mojo