def set_trace(host='localhost', port=6000, authkey=b'secret password'):
"Simplified interface to debug running programs"
global qdb, listener, conn
#from multiprocessing.connection import Listener
from json_serializer import JsonListener
# only create it if not currently instantiated
if not qdb:
address = (host, port) # family is deduced to be 'AF_INET'
listener = JsonListener(address, authkey=authkey)
conn = listener.accept()
# create the backend
qdb = Qdb(conn)
# start debugger backend:
qdb.set_trace()
def main(host='localhost', port=6000, authkey=b'secret password'):
"Debug a script and accept a remote frontend"
if not sys.argv[1:] or sys.argv[1] in ("--help", "-h"):
print("usage: pdb.py scriptfile [arg] ...")
sys.exit(2)
mainpyfile = sys.argv[1] # Get script filename
if not os.path.exists(mainpyfile):
print('Error:', mainpyfile, 'does not exist')
sys.exit(1)
del sys.argv[0] # Hide "pdb.py" from argument list
# Replace pdb's dir with script's dir in front of module search path.
sys.path[0] = os.path.dirname(mainpyfile)
#from multiprocessing.connection import Listener
from json_serializer import JsonListener
address = (host, port) # family is deduced to be 'AF_INET'
listener = JsonListener(address, authkey=authkey)
print("qdb debugger backend: waiting for connection at", address)
conn = listener.accept()
print('qdb debugger backend: connected to', listener.last_accepted)
# create the backend
qdb = Qdb(conn, redirect_stdio=True, allow_interruptions=True)
try:
print("running", mainpyfile)
qdb._runscript(mainpyfile)
print("The program finished")
except SystemExit:
# In most cases SystemExit does not warrant a post-mortem session.
print("The program exited via sys.exit(). Exit status: ")
print(sys.exc_info()[1])
raise
except Exception:
traceback.print_exc()
print("Uncaught exception. Entering post mortem debugging")
info = sys.exc_info()
qdb.post_mortem(info)
print("Program terminated!")
finally:
conn.close()
listener.close()
print("qdb debbuger backend: connection closed")