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artiq/artiq/tools.py

169 lines
4.3 KiB
Python

from operator import itemgetter
import importlib.machinery
import linecache
import logging
import sys
import asyncio
import time
import collections
import os.path
from artiq.language.environment import is_experiment
from artiq.protocols import pyon
logger = logging.getLogger(__name__)
def parse_arguments(arguments):
d = {}
for argument in arguments:
name, eq, value = argument.partition("=")
d[name] = pyon.decode(value)
return d
def file_import(filename):
linecache.checkcache(filename)
modname = filename
i = modname.rfind("/")
if i > 0:
modname = modname[i+1:]
i = modname.find(".")
if i > 0:
modname = modname[:i]
modname = "file_import_" + modname
path = os.path.dirname(os.path.realpath(filename))
sys.path.insert(0, path)
loader = importlib.machinery.SourceFileLoader(modname, filename)
module = loader.load_module()
sys.path.remove(path)
return module
def get_experiment(module, experiment=None):
if experiment:
return getattr(module, experiment)
exps = [(k, v) for k, v in module.__dict__.items()
if is_experiment(v)]
if not exps:
raise ValueError("No experiments in module")
if len(exps) > 1:
raise ValueError("More than one experiment found in module")
return exps[0][1]
def verbosity_args(parser):
group = parser.add_argument_group("verbosity")
group.add_argument("-v", "--verbose", default=0, action="count",
help="increase logging level")
group.add_argument("-q", "--quiet", default=0, action="count",
help="decrease logging level")
def simple_network_args(parser, default_port):
group = parser.add_argument_group("network")
group.add_argument("--bind", default="::1",
help="hostname or IP address to bind to")
group.add_argument("-p", "--port", default=default_port, type=int,
help="TCP port to listen to (default: %(default)d)")
def init_logger(args):
logging.basicConfig(level=logging.WARNING + args.quiet*10 - args.verbose*10)
@asyncio.coroutine
def exc_to_warning(coro):
try:
yield from coro
except:
logger.warning("asyncio coroutine terminated with exception",
exc_info=True)
@asyncio.coroutine
def asyncio_process_wait_timeout(process, timeout):
# In Python < 3.5, asyncio.wait_for(process.wait(), ...
# causes a futures.InvalidStateError inside asyncio if and when the
# process terminates after the timeout.
# Work around this problem.
@asyncio.coroutine
def process_wait_returncode_timeout():
while True:
if process.returncode is not None:
break
yield from asyncio.sleep(0.1)
yield from asyncio.wait_for(process_wait_returncode_timeout(),
timeout=timeout)
@asyncio.coroutine
def asyncio_process_wait(process):
r = True
while r:
f, p = yield from asyncio.wait([process.stdout.read(1024)])
r = f.pop().result()
@asyncio.coroutine
def asyncio_wait_or_cancel(fs, **kwargs):
fs = [asyncio.async(f) for f in fs]
try:
d, p = yield from asyncio.wait(fs, **kwargs)
except:
for f in fs:
f.cancel()
raise
for f in p:
f.cancel()
yield from asyncio.wait([f])
return fs
class TaskObject:
def start(self):
self.task = asyncio.async(self._do())
@asyncio.coroutine
def stop(self):
self.task.cancel()
try:
yield from asyncio.wait_for(self.task, None)
except asyncio.CancelledError:
pass
del self.task
@asyncio.coroutine
def _do(self):
raise NotImplementedError
class Condition:
def __init__(self, *, loop=None):
if loop is not None:
self._loop = loop
else:
self._loop = asyncio.get_event_loop()
self._waiters = collections.deque()
@asyncio.coroutine
def wait(self):
"""Wait until notified."""
fut = asyncio.Future(loop=self._loop)
self._waiters.append(fut)
try:
yield from fut
finally:
self._waiters.remove(fut)
def notify(self):
for fut in self._waiters:
if not fut.done():
fut.set_result(False)