Mojo: Move waiting APIs to public library

mojo/edk/system/dispatcher.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_DISPATCHER_H_
 #define MOJO_EDK_SYSTEM_DISPATCHER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 11 matching lines @@
 #include "mojo/edk/system/system_impl_export.h"
 #include "mojo/edk/system/watch.h"
 #include "mojo/public/c/system/buffer.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/c/system/message_pipe.h"
 #include "mojo/public/c/system/types.h"
 
 namespace mojo {
 namespace edk {
 
-class Awakable;
 class Dispatcher;
 class MessageForTransit;
 
 using DispatcherVector = std::vector<scoped_refptr<Dispatcher>>;
 
 // A |Dispatcher| implements Mojo EDK calls that are associated with a
-// particular MojoHandle, with the exception of MojoWait and MojoWaitMany (
-// which are implemented directly in Core.).
+// particular MojoHandle.
 class MOJO_SYSTEM_IMPL_EXPORT Dispatcher
     : public base::RefCountedThreadSafe<Dispatcher> {
  public:
   struct DispatcherInTransit {
     DispatcherInTransit();
     DispatcherInTransit(const DispatcherInTransit& other);
     ~DispatcherInTransit();
 
     scoped_refptr<Dispatcher> dispatcher;
     MojoHandle local_handle;
@@ skipping 116 matching lines @@
   // The reference is associated with a |context| for disambiguation of
   // removals.
   virtual MojoResult AddWatcherRef(
       const scoped_refptr<WatcherDispatcher>& watcher,
       uintptr_t context);
 
   // Removes a WatcherDispatcher reference from this dispatcher.
   virtual MojoResult RemoveWatcherRef(WatcherDispatcher* watcher,
                                       uintptr_t context);
 
-  // Adds an awakable to this dispatcher, which will be woken up when this
-  // object changes state to satisfy |signals| with context |context|. It will
-  // also be woken up when it becomes impossible for the object to ever satisfy
-  // |signals| with a suitable error status.
-  //
-  // If |signals_state| is non-null, on *failure* |*signals_state| will be set
-  // to the current handle signals state (on success, it is left untouched).
-  //
-  // Returns:
-  //  - |MOJO_RESULT_OK| if the awakable was added;
-  //  - |MOJO_RESULT_ALREADY_EXISTS| if |signals| is already satisfied;
-  //  - |MOJO_RESULT_INVALID_ARGUMENT| if the dispatcher has been closed; and
-  //  - |MOJO_RESULT_FAILED_PRECONDITION| if it is not (or no longer) possible
-  //    that |signals| will ever be satisfied.
-  virtual MojoResult AddAwakable(Awakable* awakable,
-                                 MojoHandleSignals signals,
-                                 uintptr_t context,
-                                 HandleSignalsState* signals_state);
-
-  // Removes an awakable from this dispatcher. (It is valid to call this
-  // multiple times for the same |awakable| on the same object, so long as
-  // |AddAwakable()| was called at most once.) If |signals_state| is non-null,
-  // |*signals_state| will be set to the current handle signals state.
-  virtual void RemoveAwakable(Awakable* awakable,
-                              HandleSignalsState* signals_state);
-
   // Informs the caller of the total serialized size (in bytes) and the total
   // number of platform handles and ports needed to transfer this dispatcher
   // across a message pipe.
   //
   // Must eventually be followed by a call to EndSerializeAndClose(). Note that
   // StartSerialize() and EndSerialize() are always called in sequence, and
   // only between calls to BeginTransit() and either (but not both)
   // CompleteTransitAndClose() or CancelTransit().
   //
   // For this reason it is IMPERATIVE that the implementation ensure a
@@ skipping 52 matching lines @@
 // So logging macros and |DCHECK_EQ()|, etc. work.
 MOJO_SYSTEM_IMPL_EXPORT inline std::ostream& operator<<(std::ostream& out,
                                                         Dispatcher::Type type) {
   return out << static_cast<int>(type);
 }
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_DISPATCHER_H_