gem5/util/qdo
Jason Lowe-Power 87b9f0b87b misc: Update #!env calls for python to explicit version
In some newer Linux distributions, env python default to Python 3.0. This
patch explicitly uses "python2" instead of just "python" for all scripts
that use #!

Reported-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
2017-02-10 10:00:18 -05:00

238 lines
8.8 KiB
Python
Executable file

#! /usr/bin/env python2
# Copyright (c) 2004-2005, 2007 The Regents of The University of Michigan
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Steve Reinhardt
# Ali Saidi
# Important!
# This script expects a simple $ prompt, if you are using a shell other than
# sh which defaults to this you'll need to add something like the following
# to your bashrc/bash_profile script:
#if [ "$OAR_USER" = "xxxx" ]; then
# PS1='$ '
import sys
import os
import re
import time
import optparse
import pexpect
progname = os.path.basename(sys.argv[0])
usage = "%prog [options] command [command arguments]"
optparser = optparse.OptionParser(usage=usage)
optparser.allow_interspersed_args=False
optparser.add_option('-e', dest='stderr_file',
help='command stderr output file')
optparser.add_option('-o', dest='stdout_file',
help='command stdout output file')
optparser.add_option('-l', dest='save_log', action='store_true',
help='save oarsub output log file')
optparser.add_option('-N', dest='job_name',
help='oarsub job name')
optparser.add_option('-q', dest='dest_queue',
help='oarsub destination queue')
optparser.add_option('--qwait', dest='oarsub_timeout', type='int',
help='oarsub queue wait timeout', default=30*60)
optparser.add_option('-t', dest='cmd_timeout', type='int',
help='command execution timeout', default=600*60)
(options, cmd) = optparser.parse_args()
if cmd == []:
print >>sys.stderr, "%s: missing command" % progname
sys.exit(1)
# If we want to do this, need to add check here to make sure cmd[0] is
# a valid PBS job name, else oarsub will die on us.
#
#if not options.job_name:
# options.job_name = cmd[0]
cwd = os.getcwd()
# Deal with systems where /n is a symlink to /.automount
if cwd.startswith('/.automount/'):
cwd = cwd.replace('/.automount/', '/n/', 1)
if not cwd.startswith('/n/poolfs/'):
print >>sys.stderr, "Error: current directory must be under /n/poolfs."
sys.exit(1)
# The Shell class wraps pexpect.spawn with some handy functions that
# assume the thing on the other end is a Bourne/bash shell.
class Shell(pexpect.spawn):
# Regexp to match the shell prompt. We change the prompt to
# something fixed and distinctive to make it easier to match
# reliably.
prompt_re = re.compile('qdo\$ ')
def __init__(self, cmd):
# initialize base pexpect.spawn object
try:
pexpect.spawn.__init__(self, cmd)
except pexpect.ExceptionPexpect, exc:
print "%s:" % progname, exc
sys.exit(1)
# full_output accumulates the full output of the session
self.full_output = ""
self.quick_timeout = 15
# wait for a prompt, then change it
try:
self.expect('\$ ', options.oarsub_timeout)
except pexpect.TIMEOUT:
print >>sys.stderr, "%s: oarsub timed out." % progname
self.kill(9)
self.safe_close()
sys.exit(1)
self.do_command('unset PROMPT_COMMAND; PS1="qdo$ "')
# version of expect that updates full_output too
def expect(self, regexp, timeout = -1):
pexpect.spawn.expect(self, regexp, timeout)
self.full_output += self.before + self.after
# Just issue a command and wait for the next prompt.
# Returns a string containing the output of the command.
def do_bare_command(self, cmd, timeout = -1):
global full_output
self.sendline(cmd)
# read back the echo of the command
self.readline()
# wait for the next prompt
self.expect(self.prompt_re, timeout)
output = self.before.rstrip()
return output
# Issue a command, then query its exit status.
# Returns a (string, int) tuple with the command output and the status.
def do_command(self, cmd, timeout = -1):
# do the command itself
output = self.do_bare_command(cmd, timeout)
# collect status
status = int(self.do_bare_command("echo $?", self.quick_timeout))
return (output, status)
# Check to see if the given directory exists.
def dir_exists(self, dirname):
(output, status) = shell.do_command('[ -d %s ]' % dirname,
self.quick_timeout)
return status == 0
# Don't actually try to close it.. just wait until it closes by itself
# We can't actually kill the pid which is what it's trying to do, and if
# we call wait we could be in an unfortunate situation of it printing input
# right as we call wait, so the input is never read and the process never ends
def safe_close(self):
count = 0
while self.isalive() and count < 10:
time.sleep(1)
self.close(force=False)
# Spawn the interactive pool job.
# Hack to do link on poolfs... disabled for now since
# compiler/linker/library versioning problems between poolfs and
# nodes. May never work since poolfs is x86-64 and nodes are 32-bit.
if False and len(cmd) > 50:
shell_cmd = 'ssh -t poolfs /bin/sh -l'
print "%s: running %s on poolfs" % (progname, cmd[0])
else:
shell_cmd = 'oarsub -I'
if options.job_name:
shell_cmd += ' -n "%s"' % options.job_name
if options.dest_queue:
shell_cmd += ' -q ' + options.dest_queue
shell_cmd += ' -d %s' % cwd
shell = Shell(shell_cmd)
try:
# chdir to cwd
(output, status) = shell.do_command('cd ' + cwd)
if status != 0:
raise OSError, "Can't chdir to %s" % cwd
# wacky hack: sometimes scons will create an output directory then
# fork a job to generate files in that directory, and the job will
# get run before the directory creation propagates through NFS.
# This hack looks for a '-o' option indicating an output file and
# waits for the corresponding directory to appear if necessary.
try:
if 'cc' in cmd[0] or 'g++' in cmd[0]:
output_dir = os.path.dirname(cmd[cmd.index('-o')+1])
elif 'm5' in cmd[0]:
output_dir = cmd[cmd.index('-d')+1]
else:
output_dir = None
except (ValueError, IndexError):
# no big deal if there's no '-o'/'-d' or if it's the final argument
output_dir = None
if output_dir:
secs_waited = 0
while not shell.dir_exists(output_dir) and secs_waited < 90:
time.sleep(5)
secs_waited += 5
if secs_waited > 30:
print "waited", secs_waited, "seconds for", output_dir
# run command
if options.stdout_file:
cmd += ['>', options.stdout_file]
if options.stderr_file:
cmd += ['2>', options.stderr_file]
try:
(output, status) = shell.do_command(' '.join(cmd), options.cmd_timeout)
except pexpect.TIMEOUT:
print >>sys.stderr, "%s: command timed out after %d seconds." \
% (progname, options.cmd_timeout)
shell.sendline('~.') # oarsub/ssh termination escape sequence
shell.safe_close()
status = 3
if output:
print output
finally:
# end job
if shell.isalive():
shell.sendline('exit')
shell.expect('Disconnected from OAR job .*')
shell.safe_close()
# if there was an error, log the output even if not requested
if status != 0 or options.save_log:
log = file('qdo-log.' + str(os.getpid()), 'w')
log.write(shell.full_output)
log.close()
del shell
sys.exit(status)