SCons / bin / calibrate.py

Steven Knight 3555a56 





















Greg Noel 9747b0d 
Steven Knight 3555a56 













Steven Knight 600159a 
Steven Knight 3555a56 



Steven Knight 600159a 

Steven Knight 3555a56 







Steven Knight 600159a 



Steven Knight 3555a56 









Steven Knight b636fba 




Steven Knight 3555a56 






Greg Noel 9747b0d 
Steven Knight 3555a56 





#!/usr/bin/env python
#
# Copyright (c) 2009 The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
from __future__ import division

import optparse
import os
import re
import subprocess
import sys

variable_re = re.compile('^VARIABLE: (.*)$', re.M)
elapsed_re = re.compile('^ELAPSED: (.*)$', re.M)

def main(argv=None):
    if argv is None:
        argv = sys.argv

    parser = optparse.OptionParser(usage="calibrate.py [-h] [-p PACKAGE], [--min time] [--max time] timings/*/*-run.py")
    parser.add_option('--min', type='float', default=9.5,
                      help="minimum acceptable execution time (default 9.5)")
    parser.add_option('--max', type='float', default=10.00,
                      help="maximum acceptable execution time (default 10.00)")
    parser.add_option('-p', '--package', type="string",
                      help="package type")
    opts, args = parser.parse_args(argv[1:])

    os.environ['TIMESCONS_CALIBRATE'] = '1'

    for arg in args:
        if len(args) > 1:
            print arg + ':'

        command = [sys.executable, 'runtest.py', '--noqmtest']
        if opts.package:
            command.extend(['-p', opts.package])
        command.append(arg)

        run = 1
        good = 0
        while good < 3:
            p = subprocess.Popen(command,
                                 stdout=subprocess.PIPE,
                                 stderr=subprocess.STDOUT)
            output = p.communicate()[0]
            vm = variable_re.search(output)
            em = elapsed_re.search(output)
            try:
                elapsed = float(em.group(1))
            except AttributeError:
                print output
                raise
            print "run %3d: %7.3f:  %s" % (run, elapsed, ' '.join(vm.groups()))
            if opts.min < elapsed and elapsed < opts.max:
                good += 1
            else:
                good = 0
                for v in vm.groups():
                    var, value = v.split('=', 1)
                    value = int((int(value) * opts.max) // elapsed)
                    os.environ[var] = str(value)
            run += 1

    return 0

if __name__ == "__main__":
    sys.exit(main())
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