File: timer.py

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#! /usr/bin/env python1.5
##############################################################################
# 
# Zope Public License (ZPL) Version 1.0
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##############################################################################
"""
Helper program to time compilation and interpretation
"""

import sys
import time
import getopt
from cPickle import dumps, loads
from cStringIO import StringIO

from driver import FILE, compilefile, interpretit

def main():
    count = 10
    try:
        opts, args = getopt.getopt(sys.argv[1:], "n:")
    except getopt.error, msg:
        print msg
        sys.exit(2)
    for o, a in opts:
        if o == "-n":
            count = int(a)
    if not args:
        args = [FILE]
    for file in args:
        print file
        dummyfile = StringIO()
        it = timefunc(count, compilefile, file)
        timefunc(count, interpretit, it, None, dummyfile)

def timefunc(count, func, *args):
    sys.stderr.write("%-14s: " % func.__name__)
    sys.stderr.flush()
    t0 = time.clock()
    for i in range(count):
        result = apply(func, args)
    t1 = time.clock()
    sys.stderr.write("%6.3f secs for %d calls, i.e. %4.0f msecs per call\n"
                     % ((t1-t0), count, 1000*(t1-t0)/count))
    return result

if __name__ == "__main__":
    main()