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import io
import importlib.machinery
import os
import sys
from optparse import OptionParser
from .profile import runctx
def main():
usage = "profile.py [-o output_file_path] [-s sort] [-m module | scriptfile] [arg] ..."
parser = OptionParser(usage=usage)
parser.allow_interspersed_args = False
parser.add_option('-o', '--outfile', dest="outfile",
help="Save stats to <outfile>", default=None)
parser.add_option('-m', dest="module", action="store_true",
help="Profile a library module.", default=False)
parser.add_option('-s', '--sort', dest="sort",
help="Sort order when printing to stdout, based on pstats.Stats class",
default=-1)
if not sys.argv[1:]:
parser.print_usage()
sys.exit(2)
(options, args) = parser.parse_args()
sys.argv[:] = args
# The script that we're profiling may chdir, so capture the absolute path
# to the output file at startup.
if options.outfile is not None:
options.outfile = os.path.abspath(options.outfile)
if len(args) > 0:
if options.module:
import runpy
code = "run_module(modname, run_name='__main__')"
globs = {
'run_module': runpy.run_module,
'modname': args[0]
}
else:
progname = args[0]
sys.path.insert(0, os.path.dirname(progname))
with io.open_code(progname) as fp:
code = compile(fp.read(), progname, 'exec')
spec = importlib.machinery.ModuleSpec(name='__main__', loader=None,
origin=progname)
globs = {
'__spec__': spec,
'__file__': spec.origin,
'__name__': spec.name,
'__package__': None,
'__cached__': None,
}
try:
runctx(code, globs, None, options.outfile, options.sort)
except BrokenPipeError as exc:
# Prevent "Exception ignored" during interpreter shutdown.
sys.stdout = None
sys.exit(exc.errno)
else:
parser.print_usage()
return parser
# When invoked as main program, invoke the profiler on a script
if __name__ == '__main__':
main()
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