root/native_client_sdk/src/libraries/nacl_io/devfs/tty_event_emitter.cc

DEFINITIONS

1. Read_Locked
2. Write_Locked

// 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 "nacl_io/devfs/tty_event_emitter.h"

#include <algorithm>

namespace nacl_io {

TtyEventEmitter::TtyEventEmitter(size_t size)
    : fifo_(std::max<size_t>(1, size)) {
  UpdateStatus_Locked();
}

size_t TtyEventEmitter::Read_Locked(char* data, size_t len) {
  size_t out_len = fifo_.Read(data, len);

  UpdateStatus_Locked();
  return out_len;
}

size_t TtyEventEmitter::Write_Locked(const char* data, size_t len) {
  size_t out_len = fifo_.Write(data, len);

  UpdateStatus_Locked();
  return out_len;
}

}  // namespace nacl_io