Feat: POSIX signal

include/logger.h

@@ -161,6 +161,9 @@ uint64_t _r_sp()
 // #define DEBUG_THREAD(val) DEBUG(val)
 #define DEBUG_THREAD(val) CLEAN
 
+#define DEBUG_SIGNAL(val) DEBUG(val)
+// #define DEBUG_SIGNAL(val) CLEAN
+
 extern char logger_buf[LOGGER_BUFLEN];
 extern char *logger_cur;
 extern char sp_buf[LOGGER_BUFLEN];