def main():
parser = argparse.ArgumentParser(description='Development Server Help')
parser.add_argument("-p", "--port", action="store", dest="port", type=int,
help="listening port", default=8000)
parser.add_argument("-n", "--num_processes", action="store", dest="num_processes", type=int,
help="num of worker processes", default=8)
parser.add_argument("-m", "--multi_port", action="store_true", dest="multi_port",
help="use different port for each process", default=False)
parser.add_argument("-c", "--cpu_set", action="store", dest="cpu_set",
help="run on cpu set", default="")
parser.add_argument("-x", "--xperf", action="store_true", dest="xperf",
help="collect call stacks with python-flamegraph", default=False)
args = parser.parse_args()
print("Server starting with master pid {}".format(posix.getpid()))
posix.setpgid(0, 0)
register_signal_handler_for_master()
if args.xperf:
dest_dir = "xperf-log/{}".format(datetime.datetime.utcnow().timestamp())
os.system("mkdir -p {}".format(dest_dir))
port = args.port
if not args.multi_port:
http_server = HTTPServer(WSGIContainer(app))
http_server.bind(port)
#http_server.start(args.num_processes)
tornado.process.fork_processes(args.num_processes)
sockets = http_server._pending_sockets
http_server._pending_sockets = []
http_server.add_sockets(sockets)
else:
tornado.process.fork_processes(args.num_processes)
sockets = tornado.netutil.bind_sokets(args.port + tornado.process.task_id())
http_server = HTTPServer(WSGIContainer(app))
http_server.add_sockets(sockets)
thread = None
if args.xperf:
from flamegraph.flamegraph import ProfileThread
thread = ProfileThread(open("{}/perf-{}.log".format(dest_dir, posix.getpid()), "w"), 0.001, None)
thread.start()
register_signal_handler_for_worker(thread)
IOLoop.instance().start()
