45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
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#!/usr/bin/env python
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# Copyright 2015 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""
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This script calls the first argument for each of the following arguments in
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parallel. E.g.
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parallel.py "clang --opt" file1 file2
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calls
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clang --opt file1
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clang --opt file2
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The output (stdout and stderr) is concatenated sequentially in the form:
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______________ file1
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<output of clang --opt file1>
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______________ finish <exit code of clang --opt file1> ______________
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______________ file2
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<output of clang --opt file2>
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______________ finish <exit code of clang --opt file2> ______________
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"""
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import itertools
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import multiprocessing
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import subprocess
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import sys
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def invoke(cmdline):
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try:
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return (subprocess.check_output(
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cmdline, shell=True, stderr=subprocess.STDOUT), 0)
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except subprocess.CalledProcessError as e:
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return (e.output, e.returncode)
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if __name__ == '__main__':
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assert len(sys.argv) > 2
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processes = multiprocessing.cpu_count()
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pool = multiprocessing.Pool(processes=processes)
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cmdlines = ["%s %s" % (sys.argv[1], filename) for filename in sys.argv[2:]]
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for filename, result in itertools.izip(
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sys.argv[2:], pool.imap(invoke, cmdlines)):
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print "______________ %s" % filename
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print result[0]
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print "______________ finish %d ______________" % result[1]
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