Initial import of the Chrome Frame codebase. Integration in chrome.gyp coming...

chrome_frame/sync_msg_reply_dispatcher.cc

Index: chrome_frame/sync_msg_reply_dispatcher.cc
===================================================================
--- chrome_frame/sync_msg_reply_dispatcher.cc	(revision 0)
+++ chrome_frame/sync_msg_reply_dispatcher.cc	(revision 0)
@@ -0,0 +1,61 @@
+// Copyright (c) 2009 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 "chrome_frame/sync_msg_reply_dispatcher.h"
+
+#include "ipc/ipc_sync_message.h"
+
+void SyncMessageReplyDispatcher::Push(IPC::SyncMessage* msg, void* callback,
+                                      void* key) {
+  MessageSent pending(IPC::SyncMessage::GetMessageId(*msg),
+                      msg->type(), callback, key);
+  AutoLock lock(message_queue_lock_);
+  message_queue_.push_back(pending);
+}
+
+bool SyncMessageReplyDispatcher::HandleMessageType(const IPC::Message& msg,
+                                                   const MessageSent& origin) {
+  return false;
+}
+
+bool SyncMessageReplyDispatcher::OnMessageReceived(const IPC::Message& msg) {
+  MessageSent origin;
+  if (!Pop(msg, &origin)) {
+    return false;
+  }
+
+  // No callback e.g. no return values and/or don't care
+  if (origin.callback == NULL)
+    return true;
+
+  return HandleMessageType(msg, origin);
+}
+
+void SyncMessageReplyDispatcher::Cancel(void* key) {
+  DCHECK(key != NULL);
+  AutoLock lock(message_queue_lock_);
+  PendingSyncMessageQueue::iterator it;
+  for (it = message_queue_.begin(); it != message_queue_.end(); ++it) {
+    if (it->key == key) {
+      it->key = NULL;
+    }
+  }
+}
+
+bool SyncMessageReplyDispatcher::Pop(const IPC::Message& msg, MessageSent* t) {
+  if (!msg.is_reply())
+    return false;
+
+  int id = IPC::SyncMessage::GetMessageId(msg);
+  AutoLock lock(message_queue_lock_);
+  PendingSyncMessageQueue::iterator it;
+  for (it = message_queue_.begin(); it != message_queue_.end(); ++it) {
+    if (it->id == id) {
+      *t = *it;
+      message_queue_.erase(it);
+      return true;
+    }
+  }
+  return false;
+}