import logging
import os
-import platform
import signal
-import threading
import sys
+import threading
import time
+from typing import Optional
import cloudpickle # type: ignore
import psutil # type: ignore
import argparse_utils
import bootstrap
import config
+from stopwatch import Timer
from thread_utils import background_thread
-
logger = logging.getLogger(__file__)
cfg = config.add_commandline_args(
type=str,
required=True,
metavar='FILENAME',
- help='The location of the bundle of code to execute.'
+ help='The location of the bundle of code to execute.',
)
cfg.add_argument(
'--result_file',
type=str,
required=True,
metavar='FILENAME',
- help='The location where we should write the computation results.'
+ help='The location where we should write the computation results.',
)
cfg.add_argument(
'--watch_for_cancel',
action=argparse_utils.ActionNoYes,
- default=False,
- help='Should we watch for the cancellation of our parent ssh process?'
+ default=True,
+ help='Should we watch for the cancellation of our parent ssh process?',
)
@background_thread
def watch_for_cancel(terminate_event: threading.Event) -> None:
- if platform.node() == 'VIDEO-COMPUTER':
- logger.warning('Background thread not allowed on retarded computers, sorry.')
- return
logger.debug('Starting up background thread...')
p = psutil.Process(os.getpid())
while True:
saw_sshd = True
break
if not saw_sshd:
- logger.error('Did not see sshd in our ancestors list?! Committing suicide.')
+ logger.error(
+ 'Did not see sshd in our ancestors list?! Committing suicide.'
+ )
os.system('pstree')
os.kill(os.getpid(), signal.SIGTERM)
time.sleep(5.0)
time.sleep(1.0)
+def cleanup_and_exit(
+ thread: Optional[threading.Thread],
+ stop_thread: Optional[threading.Event],
+ exit_code: int,
+) -> None:
+ if stop_thread is not None:
+ stop_thread.set()
+ assert thread is not None
+ thread.join()
+ sys.exit(exit_code)
+
+
@bootstrap.initialize
def main() -> None:
in_file = config.config['code_file']
out_file = config.config['result_file']
- (thread, stop_thread) = watch_for_cancel()
+ thread = None
+ stop_thread = None
+ if config.config['watch_for_cancel']:
+ (thread, stop_thread) = watch_for_cancel()
logger.debug(f'Reading {in_file}.')
try:
except Exception as e:
logger.exception(e)
logger.critical(f'Problem reading {in_file}. Aborting.')
- stop_thread.set()
- sys.exit(-1)
+ cleanup_and_exit(thread, stop_thread, 1)
logger.debug(f'Deserializing {in_file}.')
try:
except Exception as e:
logger.exception(e)
logger.critical(f'Problem deserializing {in_file}. Aborting.')
- stop_thread.set()
- sys.exit(-1)
+ cleanup_and_exit(thread, stop_thread, 2)
logger.debug('Invoking user code...')
- start = time.time()
- ret = fun(*args, **kwargs)
- end = time.time()
- logger.debug(f'User code took {end - start:.1f}s')
+ with Timer() as t:
+ ret = fun(*args, **kwargs)
+ logger.debug(f'User code took {t():.1f}s')
logger.debug('Serializing results')
try:
except Exception as e:
logger.exception(e)
logger.critical(f'Could not serialize result ({type(ret)}). Aborting.')
- stop_thread.set()
- sys.exit(-1)
+ cleanup_and_exit(thread, stop_thread, 3)
logger.debug(f'Writing {out_file}.')
try:
except Exception as e:
logger.exception(e)
logger.critical(f'Error writing {out_file}. Aborting.')
- stop_thread.set()
- sys.exit(-1)
-
- stop_thread.set()
- thread.join()
+ cleanup_and_exit(thread, stop_thread, 4)
+ cleanup_and_exit(thread, stop_thread, 0)
if __name__ == '__main__':