[NaCl SDK] nacl_io: Add support for non-blocking connect/accept

native_client_sdk/src/libraries/nacl_io/event_emitter_stream.h

 // Copyright (c) 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 LIBRARIES_NACL_IO_EVENT_EMITTER_STREAM_H_
 #define LIBRARIES_NACL_IO_EVENT_EMITTER_STREAM_H_
 
 #include "nacl_io/event_emitter.h"
 
 #include "sdk_util/macros.h"
 #include "sdk_util/scoped_ref.h"
 
 namespace nacl_io {
 
 class EventEmitterStream;
 class FIFOInterface;
 class MountNodeStream;
 
 typedef sdk_util::ScopedRef<EventEmitterStream> ScopedEventEmitterStream;
 
 class EventEmitterStream : public EventEmitter {
  public:
   EventEmitterStream();
 
   void AttachStream(MountNodeStream* stream);
   void DetachStream();
 
   MountNodeStream* stream() { return stream_; }
 
+  uint32_t BytesInOutputFIFO();
+  uint32_t SpaceInInputFIFO();
+
 protected:
   virtual FIFOInterface* in_fifo() = 0;
   virtual FIFOInterface* out_fifo() = 0;
   void UpdateStatus_Locked();
 
 protected:
   MountNodeStream* stream_;
   DISALLOW_COPY_AND_ASSIGN(EventEmitterStream);
 };
 
 }  // namespace nacl_io
 
 #endif  // LIBRARIES_NACL_IO_EVENT_EMITTER_STREAM_H_