C++ swaglog (#19825)

* c++ swaglog

* dd

* continue
old-commit-hash: c283be24d3

selfdrive/common/swaglog.cc

@@ -11,20 +11,27 @@
 
 #include "json11.hpp"
 
-#include "common/timing.h"
 #include "common/util.h"
 #include "common/version.h"
 
 #include "swaglog.h"
 
-typedef struct LogState {
+class LogState {
+public:
+  LogState() = default;
+  ~LogState();
   std::mutex lock;
   bool inited;
   json11::Json::object ctx_j;
   void *zctx;
   void *sock;
   int print_level;
-} LogState;
+};
+
+LogState::~LogState() {
+  zmq_close(sock);
+  zmq_ctx_destroy(zctx);
+}
 
 static LogState s = {};
 
@@ -71,24 +78,26 @@ static void cloudlog_init() {
   s.inited = true;
 }
 
-void cloudlog_e(int levelnum, const char* filename, int lineno, const char* func,
-                const char* fmt, ...) {
+void log(int levelnum, const char* filename, int lineno, const char* func, const char* msg, const std::string& log_s) {
   std::lock_guard lk(s.lock);
   cloudlog_init();
+  if (levelnum >= s.print_level) {
+    printf("%s: %s\n", filename, msg);
+  }
+  char levelnum_c = levelnum;
+  zmq_send(s.sock, &levelnum_c, 1, ZMQ_NOBLOCK | ZMQ_SNDMORE);
+  zmq_send(s.sock, log_s.c_str(), log_s.length(), ZMQ_NOBLOCK);
+}
 
-  char* msg_buf = NULL;
+void cloudlog_e(int levelnum, const char* filename, int lineno, const char* func,
+                const char* fmt, ...) {
+  char* msg_buf = nullptr;
   va_list args;
   va_start(args, fmt);
   vasprintf(&msg_buf, fmt, args);
   va_end(args);
 
-  if (!msg_buf) {
-    return;
-  }
-
-  if (levelnum >= s.print_level) {
-    printf("%s: %s\n", filename, msg_buf);
-  }
+  if (!msg_buf) return;
 
   json11::Json log_j = json11::Json::object {
     {"msg", msg_buf},
@@ -99,15 +108,9 @@ void cloudlog_e(int levelnum, const char* filename, int lineno, const char* func
     {"funcname", func},
     {"created", seconds_since_epoch()}
   };
-
   std::string log_s = log_j.dump();
-
+  log(levelnum, filename, lineno, func, msg_buf, log_s);
   free(msg_buf);
-
-  char levelnum_c = levelnum;
-  zmq_send(s.sock, &levelnum_c, 1, ZMQ_NOBLOCK | ZMQ_SNDMORE);
-  zmq_send(s.sock, log_s.c_str(), log_s.length(), ZMQ_NOBLOCK);
-
 }
 
 void cloudlog_bind(const char* k, const char* v) {