diff options
| -rw-r--r-- | lib/bb/daemonize.py | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/bb/daemonize.py b/lib/bb/daemonize.py index 8300d1d0f..bf1679346 100644 --- a/lib/bb/daemonize.py +++ b/lib/bb/daemonize.py @@ -49,8 +49,8 @@ def createDaemon(function, logfile): # exit() or _exit()? # _exit is like exit(), but it doesn't call any functions registered # with atexit (and on_exit) or any registered signal handlers. It also - # closes any open file descriptors. Using exit() may cause all stdio - # streams to be flushed twice and any temporary files may be unexpectedly + # closes any open file descriptors, but doesn't flush any buffered output. + # Using exit() may cause all any temporary files to be unexpectedly # removed. It's therefore recommended that child branches of a fork() # and the parent branch(es) of a daemon use _exit(). os._exit(0) @@ -79,4 +79,9 @@ def createDaemon(function, logfile): traceback.print_exc() finally: bb.event.print_ui_queue() + # os._exit() doesn't flush open files like os.exit() does. Manually flush + # stdout and stderr so that any logging output will be seen, particularly + # exception tracebacks. + sys.stdout.flush() + sys.stderr.flush() os._exit(0) |