AP_HAL_Linux: Enforce line buffering

Helpful when run via systemd or other tool that captures stdout for logging purpose
ArduPilot · Oct 23, 2024 · fec5156 · fec5156
1 parent 92693e0
commit fec5156
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/libraries/AP_HAL_Linux/HAL_Linux_Class.cpp b/libraries/AP_HAL_Linux/HAL_Linux_Class.cpp
@@ -361,6 +361,10 @@ void HAL_Linux::run(int argc, char* const argv[], Callbacks* callbacks) const
         CMDLINE_SERIAL9,
     };
 
+    // set explicit line buffering for e.g. logging via systemd
+    setvbuf(stdout, (char *)0, _IOLBF, 0);
+    setvbuf(stderr, (char *)0, _IOLBF, 0);
+
     int opt;
     const struct GetOptLong::option options[] = {
         {"uartA",         true,  0, 'A'},