| // 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. |
| |
| #include "nacl_io/event_emitter_stream.h" |
| |
| #include <poll.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| |
| #include "nacl_io/fifo_interface.h" |
| #include "sdk_util/auto_lock.h" |
| |
| namespace nacl_io { |
| |
| EventEmitterStream::EventEmitterStream() : stream_(NULL) {} |
| |
| void EventEmitterStream::AttachStream(MountNodeStream* stream) { |
| AUTO_LOCK(GetLock()); |
| stream_ = stream; |
| } |
| |
| void EventEmitterStream::DetachStream() { |
| AUTO_LOCK(GetLock()); |
| |
| RaiseEvents_Locked(POLLHUP); |
| stream_ = NULL; |
| } |
| |
| void EventEmitterStream::UpdateStatus_Locked() { |
| uint32_t status = 0; |
| if (!in_fifo()->IsEmpty()) |
| status |= POLLIN; |
| |
| if (!out_fifo()->IsFull()) |
| status |= POLLOUT; |
| |
| ClearEvents_Locked(~status); |
| RaiseEvents_Locked(status); |
| } |
| |
| |
| } // namespace nacl_io |
| |
| |