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1185.33.86
by Martin Pool
Add additional module for lsprof. |
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# this is copied from the lsprof distro because somehow
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# it is not installed by distutils
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# I made one modification to profile so that it returns a pair
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# instead of just the Stats object
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import sys |
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from _lsprof import Profiler, profiler_entry, profiler_subentry |
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__all__ = ['profile', 'Stats'] |
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def profile(f, *args, **kwds): |
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"""XXX docstring"""
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p = Profiler() |
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p.enable(subcalls=True) |
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try: |
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ret = f(*args, **kwds) |
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finally: |
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p.disable() |
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return ret,Stats(p.getstats()) |
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class Stats(object): |
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"""XXX docstring"""
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def __init__(self, data): |
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self.data = data |
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def sort(self, crit="inlinetime"): |
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"""XXX docstring"""
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if crit not in profiler_entry.__dict__: |
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raise ValueError, "Can't sort by %s" % crit |
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self.data.sort(lambda b, a: cmp(getattr(a, crit), |
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getattr(b, crit))) |
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for e in self.data: |
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if e.calls: |
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e.calls.sort(lambda b, a: cmp(getattr(a, crit), |
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getattr(b, crit))) |
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def pprint(self, top=None, file=None): |
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"""XXX docstring"""
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if file is None: |
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file = sys.stdout |
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d = self.data |
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if top is not None: |
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d = d[:top] |
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cols = "% 12s %12s %11.4f %11.4f %s\n" |
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hcols = "% 12s %12s %12s %12s %s\n" |
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cols2 = "+%12s %12s %11.4f %11.4f + %s\n" |
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file.write(hcols % ("CallCount", "Recursive", "Total(ms)", |
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"Inline(ms)", "module:lineno(function)")) |
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for e in d: |
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file.write(cols % (e.callcount, e.reccallcount, e.totaltime, |
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e.inlinetime, label(e.code))) |
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if e.calls: |
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for se in e.calls: |
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file.write(cols % ("+%s" % se.callcount, se.reccallcount, |
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se.totaltime, se.inlinetime, |
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"+%s" % label(se.code))) |
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def freeze(self): |
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"""Replace all references to code objects with string
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descriptions; this makes it possible to pickle the instance."""
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# this code is probably rather ickier than it needs to be!
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for i in range(len(self.data)): |
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e = self.data[i] |
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if not isinstance(e.code, str): |
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self.data[i] = type(e)((label(e.code),) + e[1:]) |
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if e.calls: |
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for j in range(len(e.calls)): |
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se = e.calls[j] |
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if not isinstance(se.code, str): |
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e.calls[j] = type(se)((label(se.code),) + se[1:]) |
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_fn2mod = {} |
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def label(code): |
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if isinstance(code, str): |
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return code |
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try: |
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mname = _fn2mod[code.co_filename] |
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except KeyError: |
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for k, v in sys.modules.iteritems(): |
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if v is None: |
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continue
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if not hasattr(v, '__file__'): |
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continue
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if not isinstance(v.__file__, str): |
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continue
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if v.__file__.startswith(code.co_filename): |
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mname = _fn2mod[code.co_filename] = k |
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break
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else: |
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mname = _fn2mod[code.co_filename] = '<%s>'%code.co_filename |
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return '%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name) |
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if __name__ == '__main__': |
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import os |
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sys.argv = sys.argv[1:] |
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if not sys.argv: |
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print >> sys.stderr, "usage: lsprof.py <script> <arguments...>" |
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sys.exit(2) |
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sys.path.insert(0, os.path.abspath(os.path.dirname(sys.argv[0]))) |
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stats = profile(execfile, sys.argv[0], globals(), locals()) |
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stats.sort() |
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stats.pprint() |