loggerd: put signal in end of route sentinel (#21025)

cereal

@@ -1 +1 @@
-Subproject commit b1675bac3d0f759605748daeb93e801a76f7d729
+Subproject commit 546ebbff46129463523d086d073cd937b3feb1bc

selfdrive/common/util.h

@@ -150,8 +150,10 @@ public:
 #endif
   };
   inline static std::atomic<bool> power_failure = false;
+  inline static std::atomic<int> signal = 0;
   inline operator bool() { return do_exit; }
   inline ExitHandler& operator=(bool v) {
+    signal = 0;
     do_exit = v;
     return *this;
   }
@@ -160,6 +162,7 @@ private:
 #ifndef __APPLE__
     power_failure = (sig == SIGPWR);
 #endif
+    signal = sig;
     do_exit = true;
   }
   inline static std::atomic<bool> do_exit = false;

selfdrive/loggerd/logger.cc

@@ -130,10 +130,11 @@ void log_init_data(LoggerState *s) {
 }
 
 
-static void log_sentinel(LoggerState *s, cereal::Sentinel::SentinelType type) {
+static void log_sentinel(LoggerState *s, cereal::Sentinel::SentinelType type, int signal=0) {
   MessageBuilder msg;
   auto sen = msg.initEvent().initSentinel();
   sen.setType(type);
+  sen.setSignal(signal);
   auto bytes = msg.toBytes();
 
   logger_log(s, bytes.begin(), bytes.size(), true);
@@ -244,8 +245,9 @@ void logger_log(LoggerState *s, uint8_t* data, size_t data_size, bool in_qlog) {
   pthread_mutex_unlock(&s->lock);
 }
 
-void logger_close(LoggerState *s) {
-  log_sentinel(s, cereal::Sentinel::SentinelType::END_OF_ROUTE);
+void logger_close(LoggerState *s, ExitHandler *exit_handler) {
+  int signal = exit_handler == nullptr ? 0 : exit_handler->signal.load();
+  log_sentinel(s, cereal::Sentinel::SentinelType::END_OF_ROUTE, signal);
 
   pthread_mutex_lock(&s->lock);
   if (s->cur_handle) {

selfdrive/loggerd/logger.h

@@ -83,7 +83,7 @@ int logger_next(LoggerState *s, const char* root_path,
                             char* out_segment_path, size_t out_segment_path_len,
                             int* out_part);
 LoggerHandle* logger_get_handle(LoggerState *s);
-void logger_close(LoggerState *s);
+void logger_close(LoggerState *s, ExitHandler *exit_handler=nullptr);
 void logger_log(LoggerState *s, uint8_t* data, size_t data_size, bool in_qlog);
 
 void lh_log(LoggerHandle* h, uint8_t* data, size_t data_size, bool in_qlog);

selfdrive/loggerd/loggerd.cc

@@ -468,7 +468,7 @@ int main(int argc, char** argv) {
   for (auto &t : encoder_threads) t.join();
 
   LOGW("closing logger");
-  logger_close(&s.logger);
+  logger_close(&s.logger, &do_exit);
 
   if (do_exit.power_failure){
     LOGE("power failure");