Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 1 | // Copyright (c) 2011 The Chromium OS 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 | |
Paul Stewart | f0aae10 | 2011-10-19 12:11:44 -0700 | [diff] [blame] | 5 | #include "shill/glib_io_input_handler.h" |
Paul Stewart | 26b327e | 2011-10-19 11:38:09 -0700 | [diff] [blame] | 6 | |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 7 | #include <stdio.h> |
| 8 | #include <glib.h> |
| 9 | |
Eric Shienbrood | 3e20a23 | 2012-02-16 11:35:56 -0500 | [diff] [blame] | 10 | using base::Callback; |
| 11 | |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 12 | namespace shill { |
| 13 | |
| 14 | static gboolean DispatchIOHandler(GIOChannel *chan, |
| 15 | GIOCondition cond, |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 16 | gpointer data) { |
Eric Shienbrood | 3e20a23 | 2012-02-16 11:35:56 -0500 | [diff] [blame] | 17 | GlibIOInputHandler *handler = reinterpret_cast<GlibIOInputHandler *>(data); |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 18 | unsigned char buf[4096]; |
| 19 | gsize len; |
| 20 | GIOError err; |
Paul Stewart | f65320c | 2011-10-13 14:34:52 -0700 | [diff] [blame] | 21 | gboolean ret = TRUE; |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 22 | |
| 23 | if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR)) |
| 24 | return FALSE; |
| 25 | |
| 26 | err = g_io_channel_read(chan, reinterpret_cast<gchar *>(buf), sizeof(buf), |
| 27 | &len); |
| 28 | if (err) { |
| 29 | if (err == G_IO_ERROR_AGAIN) |
| 30 | return TRUE; |
Paul Stewart | f65320c | 2011-10-13 14:34:52 -0700 | [diff] [blame] | 31 | len = 0; |
| 32 | ret = FALSE; |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 33 | } |
| 34 | |
Darin Petkov | 633ac6f | 2011-07-08 13:56:13 -0700 | [diff] [blame] | 35 | InputData input_data(buf, len); |
Eric Shienbrood | 3e20a23 | 2012-02-16 11:35:56 -0500 | [diff] [blame] | 36 | handler->callback().Run(&input_data); |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 37 | |
Paul Stewart | f65320c | 2011-10-13 14:34:52 -0700 | [diff] [blame] | 38 | return ret; |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 39 | } |
| 40 | |
Eric Shienbrood | 3e20a23 | 2012-02-16 11:35:56 -0500 | [diff] [blame] | 41 | GlibIOInputHandler::GlibIOInputHandler( |
| 42 | int fd, const Callback<void(InputData *)> &callback) |
Paul Stewart | f0aae10 | 2011-10-19 12:11:44 -0700 | [diff] [blame] | 43 | : channel_(g_io_channel_unix_new(fd)), |
| 44 | callback_(callback), |
| 45 | source_id_(G_MAXUINT) { |
| 46 | g_io_channel_set_close_on_unref(channel_, TRUE); |
| 47 | } |
| 48 | |
| 49 | GlibIOInputHandler::~GlibIOInputHandler() { |
| 50 | g_source_remove(source_id_); |
| 51 | g_io_channel_shutdown(channel_, TRUE, NULL); |
| 52 | g_io_channel_unref(channel_); |
| 53 | } |
| 54 | |
| 55 | void GlibIOInputHandler::Start() { |
| 56 | if (source_id_ == G_MAXUINT) { |
| 57 | source_id_ = g_io_add_watch(channel_, |
| 58 | static_cast<GIOCondition>( |
| 59 | G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR), |
Eric Shienbrood | 3e20a23 | 2012-02-16 11:35:56 -0500 | [diff] [blame] | 60 | DispatchIOHandler, this); |
Paul Stewart | f0aae10 | 2011-10-19 12:11:44 -0700 | [diff] [blame] | 61 | } |
| 62 | } |
| 63 | |
| 64 | void GlibIOInputHandler::Stop() { |
| 65 | if (source_id_ != G_MAXUINT) { |
| 66 | g_source_remove(source_id_); |
| 67 | source_id_ = G_MAXUINT; |
| 68 | } |
| 69 | } |
| 70 | |
Paul Stewart | 25379f1 | 2011-05-26 06:41:38 -0700 | [diff] [blame] | 71 | } // namespace shill |