write_fp = open(options.write_fifo, "w")
read_fp = open(options.read_fifo, "r", 0)
# Unbuffered so we can use select() on its FD for IO mux
user_script_namespaces = dict()
main_coro = stackless.coroutine.getcurrent()
while True:
try:
soft_cache.garbage_collect_cache()
file_outputs = FileOutputRecords()
message_helper = RpcHelper(read_fp, write_fp, file_outputs)
file_outputs.set_message_helper(message_helper)
print >>sys.stderr, "SkyPy: Awaiting task"
entry_dict = message_helper.await_message("start_task")
if skypy.current_task is None: # Otherwise we're in fixed mode -- this new task continues the old one
user_script_namespace = user_script_namespaces.get(entry_dict["py_ref"].id, None)
if user_script_namespace is None:
runtime_response = skypy.fetch_ref(entry_dict["py_ref"], "open_ref", message_helper, make_sweetheart=True)
source_filename = runtime_response["filename"]
user_script_namespace = imp.load_source(str("user_namespace_%s" % entry_dict["py_ref"].id), source_filename)
user_script_namespaces[entry_dict["py_ref"].id] = user_script_namespace
else:
(options, args) = parser.parse_args()
if options.version:
print "Ciel Skywriting v0.2. Python:"
print sys.version
sys.exit(0)
if options.write_fifo is None or options.read_fifo is None:
print >>sys.stderr, "Skywriting: Must specify a read-fifo and a write-fifo."
sys.exit(1)
write_fp = open(options.write_fifo, "w")
read_fp = open(options.read_fifo, "r")
message_helper = RpcHelper(read_fp, write_fp)
while True:
try:
task = SkywritingTask(message_helper, options.stdlib_base)
task.run()
message_helper.send_message("exit", {"keep_process": "may_keep"})
except ShutdownException as e:
print >>sys.stderr, "Skywriting: dying at Ciel's request. Given reason:", e.reason
sys.exit(0)
except Exception as e:
print >>sys.stderr, "Skywriting: dying due to exception at top level"
message_helper.send_message("error", {"report": traceback.format_exc()})
