1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "nacl_io/stream/stream_event_emitter.h" 6 7#include <poll.h> 8#include <stdint.h> 9#include <stdlib.h> 10 11#include "nacl_io/fifo_interface.h" 12#include "sdk_util/auto_lock.h" 13 14namespace nacl_io { 15 16StreamEventEmitter::StreamEventEmitter() : stream_(NULL) { 17} 18 19void StreamEventEmitter::AttachStream(StreamNode* stream) { 20 AUTO_LOCK(GetLock()); 21 stream_ = stream; 22} 23 24void StreamEventEmitter::DetachStream() { 25 AUTO_LOCK(GetLock()); 26 27 RaiseEvents_Locked(POLLHUP); 28 stream_ = NULL; 29} 30 31void StreamEventEmitter::UpdateStatus_Locked() { 32 uint32_t status = 0; 33 if (!in_fifo()->IsEmpty()) 34 status |= POLLIN; 35 36 if (!out_fifo()->IsFull()) 37 status |= POLLOUT; 38 39 ClearEvents_Locked(~status); 40 RaiseEvents_Locked(status); 41} 42 43} // namespace nacl_io 44