Fix: unsynchronization between queues.

Ressources not enough protected with mutex, I extend
the scope of the lock to make sure that event flow go
through synchronously.

Change-Id: I77a80ab69eb768a211c537e0f33580379832a465
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

3 files changed, 40 insertions, 36 deletions

diff --git a/src/can-bus.cpp b/src/can-bus.cpp
index 865c19d..a3dd2d4 100644
--- a/src/can-bus.cpp
+++ b/src/can-bus.cpp
@@ -64,34 +64,34 @@ void can_bus_t::can_decode_message()
 			std::unique_lock<std::mutex> can_message_lock(can_message_mutex_);
 			new_can_message_.wait(can_message_lock);
 			can_message = next_can_message();
-		}
-
-		/* First we have to found which CanSignal it is */
-		search_key = build_DynamicField((double)can_message.get_id());
-		signals = find_can_signals(search_key);
+		
+			/* First we have to found which CanSignal it is */
+			search_key = build_DynamicField((double)can_message.get_id());
+			signals = find_can_signals(search_key);
 
-		/* Decoding the message ! Don't kill the messenger ! */
-		for(auto& sig : signals)
-		{
+			/* Decoding the message ! Don't kill the messenger ! */
+			for(auto& sig : signals)
 			{
-				std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
-				std::map<std::string, struct afb_event>& s = get_subscribed_signals();
-				
-				/* DEBUG message to make easier debugger STL containers...
-				DEBUG(binder_interface, "Operator[] key char: %s, event valid? %d", sig.genericName, afb_event_is_valid(s[sig.genericName]));
-				DEBUG(binder_interface, "Operator[] key string: %s, event valid? %d", sig.genericName, afb_event_is_valid(s[std::string(sig.genericName)]));
-				DEBUG(binder_interface, "Nb elt matched char: %d", (int)s.count(sig.genericName));
-				DEBUG(binder_interface, "Nb elt matched string: %d", (int)s.count(std::string(sig.genericName))); */
-				if( s.find(sig.genericName) != s.end() && afb_event_is_valid(s[sig.genericName]))
 				{
-					decoded_message = decoder.translateSignal(sig, can_message, getSignals());
-
-					openxc_SimpleMessage s_message = build_SimpleMessage(sig.genericName, decoded_message);
-					vehicle_message = build_VehicleMessage_with_SimpleMessage(openxc_DynamicField_Type::openxc_DynamicField_Type_NUM, s_message);
-
-					std::lock_guard<std::mutex> decoded_can_message_lock(decoded_can_message_mutex_);
-					push_new_vehicle_message(vehicle_message);
-					new_decoded_can_message_.notify_one();
+					std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
+					std::map<std::string, struct afb_event>& s = get_subscribed_signals();
+					
+					/* DEBUG message to make easier debugger STL containers...
+					DEBUG(binder_interface, "Operator[] key char: %s, event valid? %d", sig.genericName, afb_event_is_valid(s[sig.genericName]));
+					DEBUG(binder_interface, "Operator[] key string: %s, event valid? %d", sig.genericName, afb_event_is_valid(s[std::string(sig.genericName)]));
+					DEBUG(binder_interface, "Nb elt matched char: %d", (int)s.count(sig.genericName));
+					DEBUG(binder_interface, "Nb elt matched string: %d", (int)s.count(std::string(sig.genericName))); */
+					if( s.find(sig.genericName) != s.end() && afb_event_is_valid(s[sig.genericName]))
+					{
+						decoded_message = decoder.translateSignal(sig, can_message, getSignals());
+
+						openxc_SimpleMessage s_message = build_SimpleMessage(sig.genericName, decoded_message);
+						vehicle_message = build_VehicleMessage_with_SimpleMessage(openxc_DynamicField_Type::openxc_DynamicField_Type_NUM, s_message);
+
+						std::lock_guard<std::mutex> decoded_can_message_lock(decoded_can_message_mutex_);
+						push_new_vehicle_message(vehicle_message);
+						new_decoded_can_message_.notify_one();
+					}
 				}
 			}
 		}
@@ -110,18 +110,17 @@ void can_bus_t::can_event_push()
 			std::unique_lock<std::mutex> decoded_can_message_lock(decoded_can_message_mutex_);
 			new_decoded_can_message_.wait(decoded_can_message_lock);
 			v_message = next_vehicle_message();
-		}
-
-		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();
-			if(s.find(std::string(s_message.name)) != s.end() && afb_event_is_valid(s[std::string(s_message.name)]))
+			s_message = get_simple_message(v_message);
 			{
-				jo = json_object_new_object();
-				jsonify_simple(s_message, jo);
-				afb_event_push(s[std::string(s_message.name)], jo);
+				std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
+				std::map<std::string, struct afb_event>& s = 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();
+					jsonify_simple(s_message, jo);
+					afb_event_push(s[std::string(s_message.name)], jo);
+				}
 			}
 		}
 	}
@@ -255,6 +254,11 @@ void can_bus_t::push_new_can_message(const can_message_t& can_msg)
 	can_message_q_.push(can_msg);
 }
 
+bool can_bus_t::has_can_message()
+{
+	return has_can_message_;
+}
+
 openxc_VehicleMessage can_bus_t::next_vehicle_message()
 {
 	openxc_VehicleMessage v_msg;
diff --git a/src/can-bus.hpp b/src/can-bus.hpp
index b80b68d..41d3f36 100644
--- a/src/can-bus.hpp
+++ b/src/can-bus.hpp
@@ -169,6 +169,7 @@ class can_bus_t {
 		 */
 		std::condition_variable& get_new_can_message();
 
+		bool has_can_message();
 
 		/**
 		 * @brief Return first openxc_VehicleMessage on the queue 
diff --git a/src/can-signals.cpp b/src/can-signals.cpp
index 10935ab..d761e1e 100644
--- a/src/can-signals.cpp
+++ b/src/can-signals.cpp
@@ -64,7 +64,6 @@ std::mutex& get_subscribed_signals_mutex()
 
 std::map<std::string, struct afb_event>& get_subscribed_signals()
 {
-	DEBUG(binder_interface, "Here are the first subscribed_signals: %s", subscribed_signals.begin()->first.c_str() );
 	return subscribed_signals;
 }