Making a way to create thread with a Java Looper for Android

base/message_loop/message_loop.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 "base/message_loop/message_loop.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 74 matching lines @@
 };
 
 bool enable_histogrammer_ = false;
 
 MessageLoop::MessagePumpFactory* message_pump_for_ui_factory_ = NULL;
 
 // Returns true if MessagePump::ScheduleWork() must be called one
 // time for every task that is added to the MessageLoop incoming queue.
 bool AlwaysNotifyPump(MessageLoop::Type type) {
 #if defined(OS_ANDROID)
-  return type == MessageLoop::TYPE_UI;
+  return type == MessageLoop::TYPE_UI || type == MessageLoop::TYPE_JAVA;
 #else
   return false;
 #endif
 }
 
 }  // namespace
 
 //------------------------------------------------------------------------------
 
 #if defined(OS_WIN)
@@ skipping 71 matching lines @@
 #error Not implemented
 #endif
 
   if (type_ == TYPE_UI) {
     if (message_pump_for_ui_factory_)
       pump_.reset(message_pump_for_ui_factory_());
     else
       pump_.reset(MESSAGE_PUMP_UI);
   } else if (type_ == TYPE_IO) {
     pump_.reset(MESSAGE_PUMP_IO);
+#if defined(OS_ANDROID)

[brettw, 2013/08/06 21:43:47]

Can you add a comment here that the requirements are the same as for UI so we
can use that object, but we do this to avoid hitting the factory case in the
TYPE_UI handler above?

+  } else if (type_ == TYPE_JAVA) {
+    pump_.reset(MESSAGE_PUMP_UI);
+#endif
   } else {
     DCHECK_EQ(TYPE_DEFAULT, type_);
     pump_.reset(new MessagePumpDefault());
   }
 }
 
 MessageLoop::~MessageLoop() {
   DCHECK_EQ(this, current());
 
   DCHECK(!run_loop_);
@@ skipping 544 matching lines @@
       fd,
       persistent,
       mode,
       controller,
       delegate);
 }
 
 #endif
 
 }  // namespace base