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# Copyright (c) 2010, 2011 Nicira Networks
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import signal
def _signal_status_msg(type_, signr):
s = "%s by signal %d" % (type_, signr)
for name in signal.__dict__:
if name.startswith("SIG") and getattr(signal, name) == signr:
return "%s (%s)" % (s, name)
return s
def status_msg(status):
"""Given 'status', which is a process status in the form reported by
waitpid(2) and returned by process_status(), returns a string describing
how the process terminated."""
if os.WIFEXITED(status):
s = "exit status %d" % os.WEXITSTATUS(status)
elif os.WIFSIGNALED(status):
s = _signal_status_msg("killed", os.WTERMSIG(status))
elif os.WIFSTOPPED(status):
s = _signal_status_msg("stopped", os.WSTOPSIG(status))
else:
s = "terminated abnormally (%x)" % status
if os.WCOREDUMP(status):
s += ", core dumped"
return s
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