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"""High-perfomance logging profiler, mostly written in C.""" import _hotshot from _hotshot import ProfilerError from warnings import warnpy3k as _warnpy3k _warnpy3k("The 'hotshot' module is not supported in 3.x, " "use the 'profile' module instead.", stacklevel=2) class Profile: def __init__(self, logfn, lineevents=0, linetimings=1): self.lineevents = lineevents and 1 or 0 self.linetimings = (linetimings and lineevents) and 1 or 0 self._prof = p = _hotshot.profiler( logfn, self.lineevents, self.linetimings) # Attempt to avoid confusing results caused by the presence of # Python wrappers around these functions, but only if we can # be sure the methods have not been overridden or extended. if self.__class__ is Profile: self.close = p.close self.start = p.start self.stop = p.stop self.addinfo = p.addinfo def close(self): """Close the logfile and terminate the profiler.""" self._prof.close() def fileno(self): """Return the file descriptor of the profiler's log file.""" return self._prof.fileno() def start(self): """Start the profiler.""" self._prof.start() def stop(self): """Stop the profiler.""" self._prof.stop() def addinfo(self, key, value): """Add an arbitrary labelled value to the profile log.""" self._prof.addinfo(key, value) # These methods offer the same interface as the profile.Profile class, # but delegate most of the work to the C implementation underneath. def run(self, cmd): """Profile an exec-compatible string in the script environment. The globals from the __main__ module are used as both the globals and locals for the script. """ import __main__ dict = __main__.__dict__ return self.runctx(cmd, dict, dict) def runctx(self, cmd, globals, locals): """Evaluate an exec-compatible string in a specific environment. The string is compiled before profiling begins. """ code = compile(cmd, "<string>", "exec") self._prof.runcode(code, globals, locals) return self def runcall(self, func, *args, **kw): """Profile a single call of a callable. Additional positional and keyword arguments may be passed along; the result of the call is returned, and exceptions are allowed to propogate cleanly, while ensuring that profiling is disabled on the way out. """ return self._prof.runcall(func, args, kw)