Extract Awakable from Waiter

mojo/edk/system/message_pipe.h

 // 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.
 
 #ifndef MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_
 #define MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 10 matching lines @@
 #include "mojo/edk/system/memory.h"
 #include "mojo/edk/system/message_in_transit.h"
 #include "mojo/edk/system/message_pipe_endpoint.h"
 #include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/c/system/message_pipe.h"
 #include "mojo/public/c/system/types.h"
 
 namespace mojo {
 namespace system {
 
+class Awakable;
 class Channel;
 class ChannelEndpoint;
-class Waiter;
 
 // |MessagePipe| is the secondary object implementing a message pipe (see the
 // explanatory comment in core.cc). It is typically owned by the dispatcher(s)
 // corresponding to the local endpoints. This class is thread-safe.
 class MOJO_SYSTEM_IMPL_EXPORT MessagePipe : public ChannelEndpointClient {
  public:
   // Creates a |MessagePipe| with two new |LocalMessagePipeEndpoint|s.
   static MessagePipe* CreateLocalLocal();
 
   // Creates a |MessagePipe| with a |LocalMessagePipeEndpoint| on port 0 and a
@@ skipping 21 matching lines @@
                           const void* source,
                           size_t size,
                           scoped_refptr<MessagePipe>* message_pipe,
                           unsigned* port);
 
   // Gets the type of the endpoint (used for assertions, etc.).
   MessagePipeEndpoint::Type GetType(unsigned port);
 
   // These are called by the dispatcher to implement its methods of
   // corresponding names. In all cases, the port |port| must be open.
-  void CancelAllWaiters(unsigned port);
+  void CancelAllAwakables(unsigned port);
   void Close(unsigned port);
   // Unlike |MessagePipeDispatcher::WriteMessage()|, this does not validate its
   // arguments.
   MojoResult WriteMessage(unsigned port,
                           UserPointer<const void> bytes,
                           uint32_t num_bytes,
                           std::vector<DispatcherTransport>* transports,
                           MojoWriteMessageFlags flags);
   MojoResult ReadMessage(unsigned port,
                          UserPointer<void> bytes,
                          UserPointer<uint32_t> num_bytes,
                          DispatcherVector* dispatchers,
                          uint32_t* num_dispatchers,
                          MojoReadMessageFlags flags);
   HandleSignalsState GetHandleSignalsState(unsigned port) const;
-  MojoResult AddWaiter(unsigned port,
-                       Waiter* waiter,
-                       MojoHandleSignals signals,
-                       uint32_t context,
-                       HandleSignalsState* signals_state);
-  void RemoveWaiter(unsigned port,
-                    Waiter* waiter,
-                    HandleSignalsState* signals_state);
+  MojoResult AddAwakable(unsigned port,
+                         Awakable* awakable,
+                         MojoHandleSignals signals,
+                         uint32_t context,
+                         HandleSignalsState* signals_state);
+  void RemoveAwakable(unsigned port,
+                      Awakable* awakable,
+                      HandleSignalsState* signals_state);
   void StartSerialize(unsigned port,
                       Channel* channel,
                       size_t* max_size,
                       size_t* max_platform_handles);
   bool EndSerialize(unsigned port,
                     Channel* channel,
                     void* destination,
                     size_t* actual_size,
                     embedder::PlatformHandleVector* platform_handles);
 
@@ skipping 22 matching lines @@
   base::Lock lock_;  // Protects the following members.
   scoped_ptr<MessagePipeEndpoint> endpoints_[2];
 
   DISALLOW_COPY_AND_ASSIGN(MessagePipe);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_MESSAGE_PIPE_H_