native_client_sdk/src/libraries/nacl_io/stream/stream_node.cc

   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_node.h"
   6
   7 #include <errno.h>
   8 #include <fcntl.h>
   9 #include <pthread.h>
  10 #include <string.h>
  11
  12 #include "nacl_io/ioctl.h"
  13 #include "nacl_io/stream/stream_fs.h"
  14 #include "sdk_util/atomicops.h"
  15
  16 namespace nacl_io {
  17
  18 StreamNode::StreamNode(Filesystem* fs)
  19     : Node(fs), read_timeout_(-1), write_timeout_(-1), stream_state_flags_(0) {
  20 }
  21
  22 Error StreamNode::Init(int open_flags) {
  23   Node::Init(open_flags);
  24   if (open_flags & O_NONBLOCK)
  25     SetStreamFlags(SSF_NON_BLOCK);
  26
  27   return 0;
  28 }
  29
  30 void StreamNode::SetStreamFlags(uint32_t bits) {
  31   sdk_util::AtomicOrFetch(&stream_state_flags_, bits);
  32 }
  33
  34 void StreamNode::ClearStreamFlags(uint32_t bits) {
  35   sdk_util::AtomicAndFetch(&stream_state_flags_, ~bits);
  36 }
  37
  38 uint32_t StreamNode::GetStreamFlags() {
  39   return stream_state_flags_;
  40 }
  41
  42 bool StreamNode::TestStreamFlags(uint32_t bits) {
  43   return (stream_state_flags_ & bits) == bits;
  44 }
  45
  46 void StreamNode::QueueInput() {
  47 }
  48 void StreamNode::QueueOutput() {
  49 }
  50
  51 StreamFs* StreamNode::stream() {
  52   return static_cast<StreamFs*>(filesystem_);
  53 }
  54
  55 }  // namespace nacl_io