# Copyright (C) 2006-2014 Bastian Kleineidam
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""Status message handling"""
import time
from . import task
from .. import log, LOG_CHECK, strformat
[docs]
class Interrupt(task.CheckedTask):
"""Thread that raises KeyboardInterrupt after a specified duration.
This gives us a portable SIGALRM implementation.
The duration is checked every 5 seconds.
"""
WaitSeconds = 5
def __init__(self, duration):
"""Initialize the task.
@param duration: raise KeyboardInterrupt after given number of seconds
@type duration: int
"""
super().__init__()
self.duration = duration
[docs]
def run_checked(self):
"""Wait and raise KeyboardInterrupt after."""
self.start_time = time.time()
self.name = "Interrupt"
while not self.stopped(self.WaitSeconds):
duration = time.time() - self.start_time
if duration > self.duration:
log.warn(
LOG_CHECK,
"Interrupt after %s" % strformat.strduration_long(duration),
)
raise KeyboardInterrupt()