4 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
26 #include "sensor_log.h"
27 #include "channel_event_handler.h"
29 #define SYSTEMD_SOCK_BUF_SIZE 40000
33 class send_event_handler : public event_handler
36 send_event_handler(channel *ch, message *msg)
41 bool handle(int fd, event_condition condition)
43 if (!m_ch || !m_ch->is_connected())
46 if (condition & (EVENT_IN | EVENT_HUP))
49 if (!m_ch->send_sync(m_msg))
54 if(m_msg->ref_count() <= 0) {
68 class read_event_handler : public event_handler
71 read_event_handler(channel *ch)
75 bool handle(int fd, event_condition condition)
79 if (!m_ch || !m_ch->is_connected())
82 if (condition & (EVENT_OUT | EVENT_HUP))
85 if (!m_ch->read_sync(msg, false))
95 channel::channel(socket *sock)
96 : m_fd(sock->get_fd())
107 /* disconnect() should not be called here */
110 void channel::bind(channel_handler *handler, event_loop *loop)
114 m_connected.store(true);
117 m_handler->connected(this);
120 void channel::bind(void)
123 m_event_id = m_loop->add_event(m_socket->get_fd(),
124 (EVENT_IN | EVENT_HUP | EVENT_NVAL),
125 dynamic_cast<channel_event_handler *>(m_handler));
128 bool channel::connect(channel_handler *handler, event_loop *loop)
130 if (!m_socket->connect())
137 void channel::disconnect(void)
139 ret_if(!is_connected());
140 m_connected.store(false);
143 m_handler->disconnected(this);
148 m_loop->remove_event(m_event_id, true);
159 bool channel::send(message *msg)
161 retv_if(!m_loop, false);
163 int cur_buffer_size = m_socket->get_current_buffer_size();
164 retv_if(cur_buffer_size > SYSTEMD_SOCK_BUF_SIZE, false);
166 send_event_handler *handler = new(std::nothrow) send_event_handler(this, msg);
167 retvm_if(!handler, false, "Failed to allocate memory");
171 m_loop->add_event(m_socket->get_fd(),
172 (EVENT_OUT | EVENT_HUP | EVENT_NVAL) , handler);
177 bool channel::send_sync(message *msg)
179 retv_if(!msg, false);
182 char *buf = msg->body();
185 size = m_socket->send(reinterpret_cast<void *>(msg->header()),
186 sizeof(message_header), true);
187 retv_if(size <= 0, false);
188 retv_if(msg->size() <= 0, true);
191 size = m_socket->send(buf, msg->size(), true);
192 retv_if(size <= 0, false);
197 bool channel::read(void)
199 retv_if(!m_loop, false);
201 read_event_handler *handler = new(std::nothrow) read_event_handler(this);
202 retvm_if(!handler, false, "Failed to allocate memory");
204 m_loop->add_event(m_socket->get_fd(), (EVENT_IN | EVENT_HUP | EVENT_NVAL), handler);
209 bool channel::read_sync(message &msg, bool select)
211 message_header header;
213 char buf[MAX_MSG_CAPACITY];
216 size = m_socket->recv(&header, sizeof(message_header), select);
217 retv_if(size <= 0, false);
219 /* check error from header */
220 if (m_handler && header.err != 0) {
221 m_handler->error_caught(this, header.err);
222 msg.header()->err = header.err;
227 if (header.length > 0) {
228 size = m_socket->recv(&buf, header.length, select);
229 retv_if(size <= 0, false);
232 buf[header.length] = '\0';
233 msg.enclose(reinterpret_cast<const void *>(buf), header.length);
234 msg.set_type(header.type);
235 msg.header()->err = header.err;
238 m_handler->read(this, msg);
243 bool channel::is_connected(void)
245 return m_connected.load();
248 bool channel::set_option(int type, int value)
252 m_socket->set_buffer_size(type, value);
255 m_socket->set_buffer_size(type, value);
264 bool channel::get_option(int type, int &value) const
268 value = m_socket->get_current_buffer_size();
271 value = m_socket->get_buffer_size(type);
274 value = m_socket->get_buffer_size(type);
283 int channel::get_fd(void) const
288 void channel::set_event_id(uint64_t id)