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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include <pthread.h>
#include <stdint.h>
#include <unistd.h>
#define G_LOG_DOMAIN ("UI_INTER")
#include <gtk/gtk.h>
#include "ui_interface.h"
#include "ui_tree_view.h"
#include "ui_notifications.h"
#include "ui_signal_dissect_view.h"
#include "socket.h"
#include "xml_parse.h"
static
gboolean ui_callback_on_pipe_notification(
GIOChannel *source, GIOCondition condition, gpointer user_data)
{
pipe_input_t *pipe_input = (pipe_input_t *)user_data;
/* avoid reentrancy problems and stack overflow */
g_source_remove(pipe_input->pipe_input_id);
g_debug("Received new data on pipe %d", pipe_input->pipe_input_id);
if (pipe_input->input_cb(pipe_input->source_fd, pipe_input->user_data)) {
/* restore pipe handler */
pipe_input->pipe_input_id = g_io_add_watch_full(pipe_input->pipe_channel,
G_PRIORITY_HIGH,
(GIOCondition)(G_IO_IN|G_IO_ERR|G_IO_HUP),
ui_callback_on_pipe_notification,
pipe_input,
NULL);
}
return TRUE;
}
int ui_pipe_new(int pipe_fd[2], pipe_input_cb_t input_cb, gpointer user_data)
{
static pipe_input_t pipe_input;
g_assert(pipe_fd != NULL);
/* Create a pipe between GUI and a thread or a process */
if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pipe_fd) < 0) {
g_warning("Failed to create socketpair %s", g_strerror(errno));
return RC_FAIL;
}
/* Source taken from wireshark SVN repository */
pipe_input.source_fd = pipe_fd[0];
pipe_input.input_cb = input_cb;
pipe_input.user_data = user_data;
pipe_input.pipe_channel = g_io_channel_unix_new(pipe_fd[0]);
g_io_channel_set_encoding(pipe_input.pipe_channel, NULL, NULL);
pipe_input.pipe_input_id = g_io_add_watch_full(pipe_input.pipe_channel,
G_PRIORITY_HIGH,
G_IO_IN | G_IO_ERR | G_IO_HUP,
ui_callback_on_pipe_notification,
&pipe_input,
NULL);
return RC_OK;
}
int ui_pipe_write_message(int pipe_fd, const uint16_t message_type,
const void * const message, const uint16_t message_size)
{
int ret;
pipe_input_header_t pipe_input_header;
pipe_input_header.message_size = message_size + sizeof(pipe_input_header);
pipe_input_header.message_type = message_type;
if (message_size > 0 && message == NULL) {
g_error("message size = %u but message is NULL", message_size);
g_assert_not_reached();
}
ret = write(pipe_fd, &pipe_input_header, sizeof(pipe_input_header));
if (ret < 0) {
g_warning("Failed to write header to pipe: %s", g_strerror(errno));
return ret;
}
/* Only write the message to pipe if valid data to transmit */
if (message_size > 0) {
ret = write(pipe_fd, message, message_size);
if (ret < 0) {
g_warning("Failed to write message of size %u at 0x%p to pipe: %s",
message_size, message, g_strerror(errno));
return ret;
}
}
return 0;
}