diff options
Diffstat (limited to 'gnuradio-runtime/python/gnuradio/gru/daemon.py')
| -rw-r--r-- | gnuradio-runtime/python/gnuradio/gru/daemon.py | 46 |
1 files changed, 25 insertions, 21 deletions
diff --git a/gnuradio-runtime/python/gnuradio/gru/daemon.py b/gnuradio-runtime/python/gnuradio/gru/daemon.py index e04702152d..14138f9730 100644 --- a/gnuradio-runtime/python/gnuradio/gru/daemon.py +++ b/gnuradio-runtime/python/gnuradio/gru/daemon.py @@ -18,6 +18,10 @@ # the Free Software Foundation, Inc., 51 Franklin Street, # Boston, MA 02110-1301, USA. # + +from __future__ import print_function +from __future__ import unicode_literals + import os, sys, signal # Turn application into a background daemon process. @@ -55,38 +59,38 @@ import os, sys, signal def daemonize(pidfile=None, logfile=None): # fork() into background try: - pid = os.fork() - except OSError, e: - raise Exception, "%s [%d]" % (e.strerror, e.errno) + pid = os.fork() + except OSError as e: + raise Exception("%s [%d]" % (e.strerror, e.errno)) if pid == 0: # First child of first fork() - # Become session leader of new session - os.setsid() + # Become session leader of new session + os.setsid() - # fork() into background again - try: - pid = os.fork() - except OSError, e: - raise Exception, "%s [%d]" % (e.strerror, e.errno) + # fork() into background again + try: + pid = os.fork() + except OSError as e: + raise Exception("%s [%d]" % (e.strerror, e.errno)) - if pid != 0: - os._exit(0) # Second child of second fork() + if pid != 0: + os._exit(0) # Second child of second fork() - else: # Second child of first fork() - os._exit(0) + else: # Second child of first fork() + os._exit(0) - os.umask(0111) + os.umask(0o111) # Write pid pid = os.getpid() if pidfile is not None: - open(pidfile, 'w').write('%d\n'%pid) + open(pidfile, 'w').write('%d\n'%pid) # Redirect streams if logfile is not None: - lf = open(logfile, 'a+') - sys.stdout = lf - sys.stderr = lf + lf = open(logfile, 'a+') + sys.stdout = lf + sys.stderr = lf # Prevent pinning any filesystem mounts os.chdir('/') @@ -97,6 +101,6 @@ def daemonize(pidfile=None, logfile=None): if __name__ == "__main__": import time daemonize() - print "Hello, world, from daemon process." + print("Hello, world, from daemon process.") time.sleep(20) - print "Goodbye, world, from daemon process." + print("Goodbye, world, from daemon process.") |