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596
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1 #!/usr/bin/env python
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2
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3 """
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4 multiprocessing/subprocess experiments
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5 """
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6
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7 import argparse
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8 import os
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9 import subprocess
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10 import sys
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11 import time
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12 import tempfile
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13
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14 here = os.path.dirname(os.path.realpath(__file__))
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15 prog = ["yes"]
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16 timeout = 4.
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17 sleep = 1.
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18
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19 def main(args=sys.argv[1:]):
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20
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21 usage = '%prog [options]'
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22 parser = argparse.ArgumentParser(usage=usage, description=__doc__)
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23 parser.add_argument("-t", "--time", dest="time",
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24 type=float, default=1.,
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25 help="seconds to run for")
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26 options = parser.parse_args(args)
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27
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28 output = tempfile.SpooledTemporaryFile()
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29 start = time.time()
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30 proc = subprocess.Popen(prog, stdout=output)
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31 while proc.poll() is None:
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32 if time.time() - start > options.time:
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33 proc.kill()
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34
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35 # reset tempfile
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36 output.seek(0)
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37
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38 n_lines = len(output.read().splitlines())
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39 print ("{}: {} lines".format(subprocess.list2cmdline(prog), n_lines))
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40
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41 if __name__ == '__main__':
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42 main()
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