[mojo-edk] Bind a child token to child launches and port reservations.

mojo/edk/system/core.cc

 // Copyright 2013 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/edk/system/core.h"
 
 #include <string.h>
 
 #include <utility>
 
@@ skipping 151 matching lines @@
     node_controller_.reset(new NodeController(this));
   return node_controller_.get();
 }
 
 scoped_refptr<Dispatcher> Core::GetDispatcher(MojoHandle handle) {
   base::AutoLock lock(handles_lock_);
   return handles_.GetDispatcher(handle);
 }
 
 void Core::AddChild(base::ProcessHandle process_handle,
-                    ScopedPlatformHandle platform_handle) {
+                    ScopedPlatformHandle platform_handle,
+                    const std::string& child_token) {
   GetNodeController()->ConnectToChild(process_handle,
-                                      std::move(platform_handle));
+                                      std::move(platform_handle),
+                                      child_token);
+}
+
+void Core::ChildLaunchFailed(const std::string& child_token) {
+  RequestContext request_context;
+  GetNodeController()->CloseChildPorts(child_token);
 }
 
 void Core::InitChild(ScopedPlatformHandle platform_handle) {
   GetNodeController()->ConnectToParent(std::move(platform_handle));
 }
 
 void Core::SetMachPortProvider(base::PortProvider* port_provider) {
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   GetNodeController()->CreateMachPortRelay(port_provider);
 #endif
@@ skipping 135 matching lines @@
   GetNodeController()->node()->CreatePortPair(&port0, &port1);
   MojoHandle handle = AddDispatcher(
     new MessagePipeDispatcher(GetNodeController(), port0,
                               kUnknownPipeIdForDebug, 0));
   RemoteMessagePipeBootstrap::Create(
       GetNodeController(), std::move(platform_handle), port1);
   return ScopedMessagePipeHandle(MessagePipeHandle(handle));
 }
 
 ScopedMessagePipeHandle Core::CreateParentMessagePipe(
-    const std::string& token) {
+    const std::string& token, const std::string& child_token) {
   RequestContext request_context;
   ports::PortRef port0, port1;
   GetNodeController()->node()->CreatePortPair(&port0, &port1);
   MojoHandle handle = AddDispatcher(
       new MessagePipeDispatcher(GetNodeController(), port0,
                                 kUnknownPipeIdForDebug, 0));
-  GetNodeController()->ReservePort(token, port1);
+  GetNodeController()->ReservePort(token, port1, child_token);
   return ScopedMessagePipeHandle(MessagePipeHandle(handle));
 }
 
 ScopedMessagePipeHandle Core::CreateChildMessagePipe(const std::string& token) {
   RequestContext request_context;
   ports::PortRef port0, port1;
   GetNodeController()->node()->CreatePortPair(&port0, &port1);
   MojoHandle handle = AddDispatcher(
       new MessagePipeDispatcher(GetNodeController(), port0,
                                 kUnknownPipeIdForDebug, 1));
@@ skipping 785 matching lines @@
     std::unique_ptr<NodeController> node_controller) {
   // It's OK to leak this reference. At this point we know the IO loop is still
   // running, and we know the NodeController will observe its eventual
   // destruction. This tells the NodeController to delete itself when that
   // happens.
   node_controller.release()->DestroyOnIOThreadShutdown();
 }
 
 }  // namespace edk
 }  // namespace mojo