| """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) |
