123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <pthread.h>
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#include <stdint.h>
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#include <unistd.h>
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#define G_LOG_DOMAIN ("UI_INTER")
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#include <gtk/gtk.h>
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#include "ui_interface.h"
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#include "ui_tree_view.h"
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#include "ui_notifications.h"
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#include "ui_signal_dissect_view.h"
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#include "socket.h"
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#include "xml_parse.h"
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static
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gboolean ui_callback_on_pipe_notification(
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GIOChannel *source, GIOCondition condition, gpointer user_data)
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{
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pipe_input_t *pipe_input = (pipe_input_t *)user_data;
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/* avoid reentrancy problems and stack overflow */
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g_source_remove(pipe_input->pipe_input_id);
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g_debug("Received new data on pipe %d", pipe_input->pipe_input_id);
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if (pipe_input->input_cb(pipe_input->source_fd, pipe_input->user_data)) {
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/* restore pipe handler */
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pipe_input->pipe_input_id = g_io_add_watch_full(pipe_input->pipe_channel,
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G_PRIORITY_HIGH,
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(GIOCondition)(G_IO_IN|G_IO_ERR|G_IO_HUP),
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ui_callback_on_pipe_notification,
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pipe_input,
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NULL);
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}
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return TRUE;
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}
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int ui_pipe_new(int pipe_fd[2], pipe_input_cb_t input_cb, gpointer user_data)
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{
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static pipe_input_t pipe_input;
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g_assert(pipe_fd != NULL);
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/* Create a pipe between GUI and a thread or a process */
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if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pipe_fd) < 0) {
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g_warning("Failed to create socketpair %s", g_strerror(errno));
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return RC_FAIL;
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}
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/* Source taken from wireshark SVN repository */
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pipe_input.source_fd = pipe_fd[0];
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pipe_input.input_cb = input_cb;
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pipe_input.user_data = user_data;
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pipe_input.pipe_channel = g_io_channel_unix_new(pipe_fd[0]);
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g_io_channel_set_encoding(pipe_input.pipe_channel, NULL, NULL);
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pipe_input.pipe_input_id = g_io_add_watch_full(pipe_input.pipe_channel,
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G_PRIORITY_HIGH,
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G_IO_IN | G_IO_ERR | G_IO_HUP,
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ui_callback_on_pipe_notification,
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&pipe_input,
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NULL);
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return RC_OK;
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}
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int ui_pipe_write_message(int pipe_fd, const uint16_t message_type,
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const void * const message, const uint16_t message_size)
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{
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int ret;
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pipe_input_header_t pipe_input_header;
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pipe_input_header.message_size = message_size + sizeof(pipe_input_header);
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pipe_input_header.message_type = message_type;
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if (message_size > 0 && message == NULL) {
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g_error("message size = %u but message is NULL", message_size);
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g_assert_not_reached();
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}
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ret = write(pipe_fd, &pipe_input_header, sizeof(pipe_input_header));
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if (ret < 0) {
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g_warning("Failed to write header to pipe: %s", g_strerror(errno));
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return ret;
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}
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/* Only write the message to pipe if valid data to transmit */
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if (message_size > 0) {
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ret = write(pipe_fd, message, message_size);
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if (ret < 0) {
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g_warning("Failed to write message of size %u at 0x%p to pipe: %s",
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message_size, message, g_strerror(errno));
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return ret;
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}
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}
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return 0;
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}
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