Add an unconditional version of DispatcherAddAwakable(): AddAwakableUnconditional().

mojo/edk/system/simple_dispatcher.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 "mojo/edk/system/simple_dispatcher.h"
 
 #include "base/logging.h"
 
 namespace mojo {
 namespace system {
@@ skipping 10 matching lines @@
 }
 
 void SimpleDispatcher::CancelAllStateNoLock() {
   mutex().AssertHeld();
   awakable_list_.CancelAll();
 }
 
 MojoResult SimpleDispatcher::AddAwakableImplNoLock(
     Awakable* awakable,
     MojoHandleSignals signals,
+    bool force,
     uint64_t context,
     HandleSignalsState* signals_state) {
   mutex().AssertHeld();
 
   HandleSignalsState state(GetHandleSignalsStateImplNoLock());
   if (state.satisfies(signals)) {
+    if (force)
+      awakable_list_.Add(awakable, signals, context);
     if (signals_state)
       *signals_state = state;
     return MOJO_RESULT_ALREADY_EXISTS;
   }
   if (!state.can_satisfy(signals)) {
     if (signals_state)
       *signals_state = state;
     return MOJO_RESULT_FAILED_PRECONDITION;
   }
 
   awakable_list_.Add(awakable, signals, context);
   return MOJO_RESULT_OK;
 }
 
 void SimpleDispatcher::RemoveAwakableImplNoLock(
     Awakable* awakable,
     HandleSignalsState* signals_state) {
   mutex().AssertHeld();
   awakable_list_.Remove(awakable);
   if (signals_state)
     *signals_state = GetHandleSignalsStateImplNoLock();
 }
 
 }  // namespace system
 }  // namespace mojo