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#!/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, print_function
import optparse
import os
import re
import subprocess
import sys
variable_re = re.compile(r'^VARIABLE: (.*)$', re.M)
elapsed_re = re.compile(r'^ELAPSED: (.*)$', 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']
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,
universal_newlines=True)
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 < opts.max:
good += 1
else:
good = 0
for v in vm.groups():
var, value = v.split('=', 1)
# TODO: this sometimes converges slowly, better algorithm?
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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