# Simple interface to report execution times of program fragments.

# Call TSTART() to reset the timer, TSTOP(...) to report times.

import sys, os, time

def TSTART():

    global t0, t1

    u, s, cu, cs = os.times()

    t0 = u+cu, s+cs, time.time()

def TSTOP(*label):

    global t0, t1

    u, s, cu, cs = os.times()

    t1 = u+cu, s+cs, time.time()

    tt = []

    for i in range(3):

        tt.append(t1[i] - t0[i])

    [u, s, r] = tt

    msg = ''

    for x in label: msg = msg + (x + ' ')

    msg = msg + '%r user, %r sys, %r real\n' % (u, s, r)

    sys.stderr.write(msg)