Reworked reading CAN devices from BCM socket.
[apps/agl-service-can-low-level.git] / CAN-binder / low-can-binding / can / can-bus.cpp
index 61730a1..6f9e78d 100644 (file)
  * limitations under the License.
  */
 
-#include <map>
-#include <cerrno>
-#include <vector>
-#include <string>
 #include <net/if.h>
 #include <sys/socket.h>
 #include <json-c/json.h>
 #include <linux/can/raw.h>
+#include <map>
+#include <cerrno>
+#include <vector>
+#include <string>
+#include <algorithm>
 
 #include "can-bus.hpp"
 
@@ -46,6 +47,49 @@ can_bus_t::can_bus_t(utils::config_parser_t conf_file)
 
 std::map<std::string, std::shared_ptr<can_bus_dev_t>> can_bus_t::can_devices_;
 
+/// @brief Listen for all device sockets and fill can_messages_queue with them.
+/// Reading blocks until message arrive on listened sockets.
+///
+/// @return 0 if ok -1 if not
+int can_bus_t::can_reader()
+{
+       fd_set rfds;
+       int sock_max = INVALID_SOCKET;
+
+       FD_ZERO(&rfds);
+
+       for(auto& can_dev : can_devices_)
+       {
+               FD_SET(can_dev.second->get_socket().socket(), &rfds);
+               if (sock_max < can_dev.second->get_socket().socket())
+                       sock_max = can_dev.second->get_socket().socket();
+       }
+
+       int ret;
+       while(is_reading_)
+       {
+               ret = select(sock_max + 1, &rfds, nullptr, nullptr, nullptr);
+
+               if(ret == -1)
+                       perror("select()");
+               else if(ret > 0)
+               {
+                       for(const auto& s: can_devices_)
+                       {
+                               if(FD_ISSET(s.second->get_socket().socket(), &rfds))
+                               {
+                                       can_message_t msg;
+                                       s.second->get_socket() >> msg;
+                                       push_new_can_message(msg);
+                                       }
+                               }
+               }
+               else
+                       printf("Timeout\n");
+       }
+       return 0;
+}
+
 /// @brief Will make the decoding operation on a classic CAN message. It will not
 /// handle CAN commands nor diagnostic messages that have their own method to get
 /// this happens.
@@ -59,19 +103,21 @@ std::map<std::string, std::shared_ptr<can_bus_dev_t>> can_bus_t::can_devices_;
 int can_bus_t::process_can_signals(can_message_t& can_message)
 {
        int processed_signals = 0;
-       std::vector <can_signal_t*> signals;
+       struct utils::signals_found signals;
        openxc_DynamicField search_key, decoded_message;
        openxc_VehicleMessage vehicle_message;
+       configuration_t& conf = configuration_t::instance();
+       utils::signals_manager_t& sm = utils::signals_manager_t::instance();
 
        // First we have to found which can_signal_t it is
        search_key = build_DynamicField((double)can_message.get_id());
-       configuration_t::instance().find_can_signals(search_key, signals);
+       signals = sm.find_signals(search_key);
 
        // Decoding the message ! Don't kill the messenger !
-       for(auto& sig : signals)
+       for(auto& sig : signals.can_signals)
        {
-               std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
-               std::map<std::string, struct afb_event>& s = get_subscribed_signals();
+               std::lock_guard<std::mutex> subscribed_signals_lock(sm.get_subscribed_signals_mutex());
+               std::map<std::string, struct afb_event>& s = sm.get_subscribed_signals();
 
                // DEBUG message to make easier debugger STL containers...
                //DEBUG(binder_interface, "Operator[] key char: %s, event valid? %d", sig.generic_name, afb_event_is_valid(s[sig.generic_name]));
@@ -80,7 +126,7 @@ int can_bus_t::process_can_signals(can_message_t& can_message)
                //DEBUG(binder_interface, "Nb elt matched string: %d", (int)s.count(std::string(sig.generic_name));
                if( s.find(sig->get_name()) != s.end() && afb_event_is_valid(s[sig->get_name()]))
                {
-                       decoded_message = decoder_t::translateSignal(*sig, can_message, configuration_t::instance().get_can_signals());
+                       decoded_message = decoder_t::translateSignal(*sig, can_message, conf.get_can_signals());
 
                        openxc_SimpleMessage s_message = build_SimpleMessage(sig->get_name(), decoded_message);
                        vehicle_message = build_VehicleMessage(s_message);
@@ -91,7 +137,7 @@ int can_bus_t::process_can_signals(can_message_t& can_message)
                }
        }
 
-       DEBUG(binder_interface, "process_can_signals: %d/%d CAN signals processed.", processed_signals, (int)signals.size());
+       DEBUG(binder_interface, "%s: %d/%d CAN signals processed.", __FUNCTION__, processed_signals, (int)signals.can_signals.size());
        return processed_signals;
 }
 
@@ -107,8 +153,10 @@ int can_bus_t::process_diagnostic_signals(diagnostic_manager_t& manager, const c
 {
        int processed_signals = 0;
 
-       std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
-       std::map<std::string, struct afb_event>& s = get_subscribed_signals();
+       utils::signals_manager_t& sm = utils::signals_manager_t::instance();
+
+       std::lock_guard<std::mutex> subscribed_signals_lock(sm.get_subscribed_signals_mutex());
+       std::map<std::string, struct afb_event>& s = sm.get_subscribed_signals();
 
        openxc_VehicleMessage vehicle_message = manager.find_and_decode_adr(can_message);
        if( (vehicle_message.has_simple_message && vehicle_message.simple_message.has_name) &&
@@ -164,6 +212,7 @@ void can_bus_t::can_event_push()
        openxc_VehicleMessage v_message;
        openxc_SimpleMessage s_message;
        json_object* jo;
+       utils::signals_manager_t& sm = utils::signals_manager_t::instance();
 
        while(is_pushing_)
        {
@@ -175,8 +224,8 @@ void can_bus_t::can_event_push()
 
                        s_message = get_simple_message(v_message);
                        {
-                               std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
-                               std::map<std::string, struct afb_event>& s = get_subscribed_signals();
+                               std::lock_guard<std::mutex> subscribed_signals_lock(sm.get_subscribed_signals_mutex());
+                               std::map<std::string, struct afb_event>& s = sm.get_subscribed_signals();
                                if(s.find(std::string(s_message.name)) != s.end() && afb_event_is_valid(s[std::string(s_message.name)]))
                                {
                                        jo = json_object_new_object();
@@ -193,6 +242,11 @@ void can_bus_t::can_event_push()
 ///  and push subscribed events.
 void can_bus_t::start_threads()
 {
+       is_reading_ = true;
+       th_reading_ = std::thread(&can_bus_t::can_reader, this);
+       if(!th_reading_.joinable())
+               is_reading_ = false;
+
        is_decoding_ = true;
        th_decoding_ = std::thread(&can_bus_t::can_decode_message, this);
        if(!th_decoding_.joinable())
@@ -209,6 +263,7 @@ void can_bus_t::start_threads()
 /// they'll finish their job.
 void can_bus_t::stop_threads()
 {
+       is_reading_ = false;
        is_decoding_ = false;
        is_pushing_ = false;
 }
@@ -237,26 +292,27 @@ int can_bus_t::init_can_dev()
                        for(const auto& device : devices_name)
                        {
                                can_bus_t::can_devices_[device] = std::make_shared<can_bus_dev_t>(device, i);
-                               if (can_bus_t::can_devices_[device]->open() == 0)
+                               if (can_bus_t::can_devices_[device]->open() >= 0)
                                {
-                                       DEBUG(binder_interface, "Start reading thread");
-                                       NOTICE(binder_interface, "%s device opened and reading", device.c_str());
-                                       can_bus_t::can_devices_[device]->start_reading(*this);
+                                       can_bus_t::can_devices_[device]->configure();
+                                       DEBUG(binder_interface, "%s: Start reading thread", __FUNCTION__);
+                                       NOTICE(binder_interface, "%s: %s device opened and reading", __FUNCTION__, device.c_str());
+                                       //can_bus_t::can_devices_[device]->start_reading(*this);
                                        i++;
                                }
                                else
                                {
-                                       ERROR(binder_interface, "Can't open device %s", device.c_str());
+                                       ERROR(binder_interface, "%s: Can't open device %s", __FUNCTION__, device.c_str());
                                        return 1;
                                }
                        }
-                       NOTICE(binder_interface, "Initialized %d/%d can bus device(s)", i, (int)t);
+                       NOTICE(binder_interface, "%s: Initialized %d/%d can bus device(s)", __FUNCTION__, i, (int)t);
                        return 0;
                }
-               ERROR(binder_interface, "init_can_dev: Error at CAN device initialization. No devices read from configuration file");
+               ERROR(binder_interface, "%s: Error at CAN device initialization. No devices read from configuration file", __FUNCTION__);
                return 1;
        }
-       ERROR(binder_interface, "init_can_dev: Can't read INI configuration file");
+       ERROR(binder_interface, "%s: Can't read INI configuration file", __FUNCTION__);
        return 2;
 }
 
@@ -287,7 +343,7 @@ can_message_t can_bus_t::next_can_message()
        {
                can_msg = can_message_q_.front();
                can_message_q_.pop();
-               DEBUG(binder_interface, "next_can_message: Here is the next can message : id %X, length %X, data %02X%02X%02X%02X%02X%02X%02X%02X", can_msg.get_id(), can_msg.get_length(),
+               DEBUG(binder_interface, "%s: Here is the next can message : id %X, length %X, data %02X%02X%02X%02X%02X%02X%02X%02X", __FUNCTION__, can_msg.get_id(), can_msg.get_length(),
                        can_msg.get_data()[0], can_msg.get_data()[1], can_msg.get_data()[2], can_msg.get_data()[3], can_msg.get_data()[4], can_msg.get_data()[5], can_msg.get_data()[6], can_msg.get_data()[7]);
                return can_msg;
        }
@@ -314,7 +370,7 @@ openxc_VehicleMessage can_bus_t::next_vehicle_message()
        {
                v_msg = vehicle_message_q_.front();
                vehicle_message_q_.pop();
-               DEBUG(binder_interface, "next_vehicle_message: next vehicle message poped");
+               DEBUG(binder_interface, "%s: next vehicle message poped", __FUNCTION__);
                return v_msg;
        }
 
@@ -329,6 +385,15 @@ void can_bus_t::push_new_vehicle_message(const openxc_VehicleMessage& v_msg)
        vehicle_message_q_.push(v_msg);
 }
 
+/// @brief Create a RX_SETUP receive job for the BCM socket of a CAN signal.
+///
+/// @return 0 if ok -1 if not.
+       int can_bus_t::create_rx_filter(const can_signal_t& s)
+       {
+               const std::string& bus  = s.get_message().get_bus_name();
+               return can_bus_t::can_devices_[bus]->create_rx_filter(s);
+       }
+
 /// @brief Return a map with the can_bus_dev_t initialized
 ///
 /// @return map can_bus_dev_m_ map