Decouple IPC::MessageFilter from IPC::Channel

ipc/ipc_sync_message_filter.cc

 // Copyright (c) 2012 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 "ipc/ipc_sync_message_filter.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/synchronization/waitable_event.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_sync_message.h"
 
 using base::MessageLoopProxy;
 
 namespace IPC {
 
 SyncMessageFilter::SyncMessageFilter(base::WaitableEvent* shutdown_event)
-    : channel_(NULL),
+    : sender_(NULL),
       listener_loop_(MessageLoopProxy::current()),
       shutdown_event_(shutdown_event) {
 }
 
 bool SyncMessageFilter::Send(Message* message) {
   {
     base::AutoLock auto_lock(lock_);
     if (!io_loop_.get()) {
       delete message;
       return false;
@@ skipping 29 matching lines @@
 
   {
     base::AutoLock auto_lock(lock_);
     delete pending_message.deserializer;
     pending_sync_messages_.erase(&pending_message);
   }
 
   return pending_message.send_result;
 }
 
-void SyncMessageFilter::OnFilterAdded(Channel* channel) {
-  channel_ = channel;
+void SyncMessageFilter::OnFilterAdded(Sender* sender) {
+  sender_ = sender;
   base::AutoLock auto_lock(lock_);
   io_loop_ = MessageLoopProxy::current();
 }
 
-void SyncMessageFilter::OnChannelError() {
-  channel_ = NULL;
+void SyncMessageFilter::OnSenderError() {
+  sender_ = NULL;
   SignalAllEvents();
 }
 
-void SyncMessageFilter::OnChannelClosing() {
-  channel_ = NULL;
+void SyncMessageFilter::OnSenderClosing() {
+  sender_ = NULL;
   SignalAllEvents();
 }
 
 bool SyncMessageFilter::OnMessageReceived(const Message& message) {
   base::AutoLock auto_lock(lock_);
   for (PendingSyncMessages::iterator iter = pending_sync_messages_.begin();
        iter != pending_sync_messages_.end(); ++iter) {
     if (SyncMessage::IsMessageReplyTo(message, (*iter)->id)) {
       if (!message.is_reply_error()) {
         (*iter)->send_result =
             (*iter)->deserializer->SerializeOutputParameters(message);
       }
       (*iter)->done_event->Signal();
       return true;
     }
   }
 
   return false;
 }
 
 SyncMessageFilter::~SyncMessageFilter() {
 }
 
 void SyncMessageFilter::SendOnIOThread(Message* message) {
-  if (channel_) {
-    channel_->Send(message);
+  if (sender_) {
+    sender_->Send(message);
     return;
   }
 
   if (message->is_sync()) {
     // We don't know which thread sent it, but it doesn't matter, just signal
     // them all.
     SignalAllEvents();
   }
 
   delete message;
 }
 
 void SyncMessageFilter::SignalAllEvents() {
   base::AutoLock auto_lock(lock_);
   for (PendingSyncMessages::iterator iter = pending_sync_messages_.begin();
        iter != pending_sync_messages_.end(); ++iter) {
     (*iter)->done_event->Signal();
   }
 }
 
 }  // namespace IPC