| 1 | """High-perfomance logging profiler, mostly written in C.""" |
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| 2 | |
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| 3 | import _hotshot |
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| 4 | from _hotshot import ProfilerError |
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| 5 | |
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| 6 | from warnings import warnpy3k as _warnpy3k |
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| 7 | _warnpy3k("The 'hotshot' module is not supported in 3.x, " |
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| 8 | "use the 'profile' module instead.", stacklevel=2) |
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| 9 | |
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| 10 | class Profile: |
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| 11 | def __init__(self, logfn, lineevents=0, linetimings=1): |
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| 12 | self.lineevents = lineevents and 1 or 0 |
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| 13 | self.linetimings = (linetimings and lineevents) and 1 or 0 |
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| 14 | self._prof = p = _hotshot.profiler( |
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| 15 | logfn, self.lineevents, self.linetimings) |
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| 16 | |
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| 17 | # Attempt to avoid confusing results caused by the presence of |
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| 18 | # Python wrappers around these functions, but only if we can |
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| 19 | # be sure the methods have not been overridden or extended. |
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| 20 | if self.__class__ is Profile: |
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| 21 | self.close = p.close |
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| 22 | self.start = p.start |
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| 23 | self.stop = p.stop |
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| 24 | self.addinfo = p.addinfo |
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| 25 | |
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| 26 | def close(self): |
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| 27 | """Close the logfile and terminate the profiler.""" |
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| 28 | self._prof.close() |
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| 29 | |
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| 30 | def fileno(self): |
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| 31 | """Return the file descriptor of the profiler's log file.""" |
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| 32 | return self._prof.fileno() |
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| 33 | |
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| 34 | def start(self): |
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| 35 | """Start the profiler.""" |
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| 36 | self._prof.start() |
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| 37 | |
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| 38 | def stop(self): |
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| 39 | """Stop the profiler.""" |
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| 40 | self._prof.stop() |
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| 41 | |
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| 42 | def addinfo(self, key, value): |
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| 43 | """Add an arbitrary labelled value to the profile log.""" |
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| 44 | self._prof.addinfo(key, value) |
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| 45 | |
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| 46 | # These methods offer the same interface as the profile.Profile class, |
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| 47 | # but delegate most of the work to the C implementation underneath. |
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| 48 | |
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| 49 | def run(self, cmd): |
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| 50 | """Profile an exec-compatible string in the script |
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| 51 | environment. |
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| 52 | |
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| 53 | The globals from the __main__ module are used as both the |
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| 54 | globals and locals for the script. |
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| 55 | """ |
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| 56 | import __main__ |
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| 57 | dict = __main__.__dict__ |
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| 58 | return self.runctx(cmd, dict, dict) |
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| 59 | |
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| 60 | def runctx(self, cmd, globals, locals): |
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| 61 | """Evaluate an exec-compatible string in a specific |
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| 62 | environment. |
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| 63 | |
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| 64 | The string is compiled before profiling begins. |
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| 65 | """ |
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| 66 | code = compile(cmd, "<string>", "exec") |
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| 67 | self._prof.runcode(code, globals, locals) |
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| 68 | return self |
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| 69 | |
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| 70 | def runcall(self, func, *args, **kw): |
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| 71 | """Profile a single call of a callable. |
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| 72 | |
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| 73 | Additional positional and keyword arguments may be passed |
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| 74 | along; the result of the call is returned, and exceptions are |
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| 75 | allowed to propogate cleanly, while ensuring that profiling is |
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| 76 | disabled on the way out. |
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| 77 | """ |
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| 78 | return self._prof.runcall(func, args, kw) |
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