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"""Class for printing reports on profiled python code."""
# Class for printing reports on profiled python code. rev 1.0 4/1/94 # # Based on prior profile module by Sjoerd Mullender... # which was hacked somewhat by: Guido van Rossum # # see profile.doc and profile.py for more info.
# Copyright 1994, by InfoSeek Corporation, all rights reserved. # Written by James Roskind # # Permission to use, copy, modify, and distribute this Python software # and its associated documentation for any purpose (subject to the # restriction in the following sentence) without fee is hereby granted, # provided that the above copyright notice appears in all copies, and # that both that copyright notice and this permission notice appear in # supporting documentation, and that the name of InfoSeek not be used in # advertising or publicity pertaining to distribution of the software # without specific, written prior permission. This permission is # explicitly restricted to the copying and modification of the software # to remain in Python, compiled Python, or other languages (such as C) # wherein the modified or derived code is exclusively imported into a # Python module. # # INFOSEEK CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS # SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND # FITNESS. IN NO EVENT SHALL INFOSEEK CORPORATION BE LIABLE FOR ANY # SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER # RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF # CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import os import time import marshal import re
__all__ = ["Stats"]
class Stats: """This class is used for creating reports from data generated by the Profile class. It is a "friend" of that class, and imports data either by direct access to members of Profile class, or by reading in a dictionary that was emitted (via marshal) from the Profile class.
The big change from the previous Profiler (in terms of raw functionality) is that an "add()" method has been provided to combine Stats from several distinct profile runs. Both the constructor and the add() method now take arbitrarily many file names as arguments.
All the print methods now take an argument that indicates how many lines to print. If the arg is a floating point number between 0 and 1.0, then it is taken as a decimal percentage of the available lines to be printed (e.g., .1 means print 10% of all available lines). If it is an integer, it is taken to mean the number of lines of data that you wish to have printed.
The sort_stats() method now processes some additional options (i.e., in addition to the old -1, 0, 1, or 2). It takes an arbitrary number of quoted strings to select the sort order. For example sort_stats('time', 'name') sorts on the major key of "internal function time", and on the minor key of 'the name of the function'. Look at the two tables in sort_stats() and get_sort_arg_defs(self) for more examples.
All methods now return "self", so you can string together commands like: Stats('foo', 'goo').strip_dirs().sort_stats('calls').\ print_stats(5).print_callers(5) """
def __init__(self, *args): if not len(args): arg = None else: arg = args[0] args = args[1:] self.init(arg) self.add(*args)
def init(self, arg): self.all_callees = None # calc only if needed self.files = [] self.fcn_list = None self.total_tt = 0 self.total_calls = 0 self.prim_calls = 0 self.max_name_len = 0 self.top_level = {} self.stats = {} self.sort_arg_dict = {} self.load_stats(arg) trouble = 1 try: self.get_top_level_stats() trouble = 0 finally: if trouble: print "Invalid timing data", if self.files: print self.files[-1], print
def load_stats(self, arg): if not arg: self.stats = {} elif type(arg) == type(""): f = open(arg, 'rb') self.stats = marshal.load(f) f.close() try: file_stats = os.stat(arg) arg = time.ctime(file_stats.st_mtime) + " " + arg except: # in case this is not unix pass self.files = [ arg ] elif hasattr(arg, 'create_stats'): arg.create_stats() self.stats = arg.stats arg.stats = {} if not self.stats: raise TypeError, "Cannot create or construct a %r object from '%r''" % ( self.__class__, arg) return
def get_top_level_stats(self): for func, (cc, nc, tt, ct, callers) in self.stats.items(): self.total_calls += nc self.prim_calls += cc self.total_tt += tt if callers.has_key(("jprofile", 0, "profiler")): self.top_level[func] = None if len(func_std_string(func)) > self.max_name_len: self.max_name_len = len(func_std_string(func))
def add(self, *arg_list): if not arg_list: return self if len(arg_list) > 1: self.add(*arg_list[1:]) other = arg_list[0] if type(self) != type(other) or self.__class__ != other.__class__: other = Stats(other) self.files += other.files self.total_calls += other.total_calls self.prim_calls += other.prim_calls self.total_tt += other.total_tt for func in other.top_level: self.top_level[func] = None
if self.max_name_len < other.max_name_len: self.max_name_len = other.max_name_len
self.fcn_list = None
for func, stat in other.stats.iteritems(): if func in self.stats: old_func_stat = self.stats[func] else: old_func_stat = (0, 0, 0, 0, {},) self.stats[func] = add_func_stats(old_func_stat, stat) return self
def dump_stats(self, filename): """Write the profile data to a file we know how to load back.""" f = file(filename, 'wb') try: marshal.dump(self.stats, f) finally: f.close()
# list the tuple indices and directions for sorting, # along with some printable description sort_arg_dict_default = { "calls" : (((1,-1), ), "call count"), "cumulative": (((3,-1), ), "cumulative time"), "file" : (((4, 1), ), "file name"), "line" : (((5, 1), ), "line number"), "module" : (((4, 1), ), "file name"), "name" : (((6, 1), ), "function name"), "nfl" : (((6, 1),(4, 1),(5, 1),), "name/file/line"), "pcalls" : (((0,-1), ), "call count"), "stdname" : (((7, 1), ), "standard name"), "time" : (((2,-1), ), "internal time"), }
def get_sort_arg_defs(self): """Expand all abbreviations that are unique.""" if not self.sort_arg_dict: self.sort_arg_dict = dict = {} bad_list = {} for word, tup in self.sort_arg_dict_default.iteritems(): fragment = word while fragment: if not fragment: break if fragment in dict: bad_list[fragment] = 0 break dict[fragment] = tup fragment = fragment[:-1] for word in bad_list: del dict[word] return self.sort_arg_dict
def sort_stats(self, *field): if not field: self.fcn_list = 0 return self if len(field) == 1 and type(field[0]) == type(1): # Be compatible with old profiler field = [ {-1: "stdname", 0:"calls", 1:"time", 2: "cumulative" } [ field[0] ] ]
sort_arg_defs = self.get_sort_arg_defs() sort_tuple = () self.sort_type = "" connector = "" for word in field: sort_tuple = sort_tuple + sort_arg_defs[word][0] self.sort_type += connector + sort_arg_defs[word][1] connector = ", "
stats_list = [] for func, (cc, nc, tt, ct, callers) in self.stats.iteritems(): stats_list.append((cc, nc, tt, ct) + func + (func_std_string(func), func))
stats_list.sort(TupleComp(sort_tuple).compare)
self.fcn_list = fcn_list = [] for tuple in stats_list: fcn_list.append(tuple[-1]) return self
def reverse_order(self): if self.fcn_list: self.fcn_list.reverse() return self
def strip_dirs(self): oldstats = self.stats self.stats = newstats = {} max_name_len = 0 for func, (cc, nc, tt, ct, callers) in oldstats.iteritems(): newfunc = func_strip_path(func) if len(func_std_string(newfunc)) > max_name_len: max_name_len = len(func_std_string(newfunc)) newcallers = {} for func2, caller in callers.iteritems(): newcallers[func_strip_path(func2)] = caller
if newfunc in newstats: newstats[newfunc] = add_func_stats( newstats[newfunc], (cc, nc, tt, ct, newcallers)) else: newstats[newfunc] = (cc, nc, tt, ct, newcallers) old_top = self.top_level self.top_level = new_top = {} for func in old_top: new_top[func_strip_path(func)] = None
self.max_name_len = max_name_len
self.fcn_list = None self.all_callees = None return self
def calc_callees(self): if self.all_callees: return self.all_callees = all_callees = {} for func, (cc, nc, tt, ct, callers) in self.stats.iteritems(): if not func in all_callees: all_callees[func] = {} for func2, caller in callers.iteritems(): if not func2 in all_callees: all_callees[func2] = {} all_callees[func2][func] = caller return
#****************************************************************** # The following functions support actual printing of reports #******************************************************************
# Optional "amount" is either a line count, or a percentage of lines.
def eval_print_amount(self, sel, list, msg): new_list = list if type(sel) == type(""): new_list = [] for func in list: if re.search(sel, func_std_string(func)): new_list.append(func) else: count = len(list) if type(sel) == type(1.0) and 0.0 <= sel < 1.0: count = int(count * sel + .5) new_list = list[:count] elif type(sel) == type(1) and 0 <= sel < count: count = sel new_list = list[:count] if len(list) != len(new_list): msg = msg + " List reduced from %r to %r due to restriction <%r>\n" % ( len(list), len(new_list), sel)
return new_list, msg
def get_print_list(self, sel_list): width = self.max_name_len if self.fcn_list: list = self.fcn_list[:] msg = " Ordered by: " + self.sort_type + '\n' else: list = self.stats.keys() msg = " Random listing order was used\n"
for selection in sel_list: list, msg = self.eval_print_amount(selection, list, msg)
count = len(list)
if not list: return 0, list print msg if count < len(self.stats): width = 0 for func in list: if len(func_std_string(func)) > width: width = len(func_std_string(func)) return width+2, list
def print_stats(self, *amount): for filename in self.files: print filename if self.files: print indent = ' ' * 8 for func in self.top_level: print indent, func_get_function_name(func)
print indent, self.total_calls, "function calls", if self.total_calls != self.prim_calls: print "(%d primitive calls)" % self.prim_calls, print "in %.3f CPU seconds" % self.total_tt print width, list = self.get_print_list(amount) if list: self.print_title() for func in list: self.print_line(func) print print return self
def print_callees(self, *amount): width, list = self.get_print_list(amount) if list: self.calc_callees()
self.print_call_heading(width, "called...") for func in list: if func in self.all_callees: self.print_call_line(width, func, self.all_callees[func]) else: self.print_call_line(width, func, {}) print print return self
def print_callers(self, *amount): width, list = self.get_print_list(amount) if list: self.print_call_heading(width, "was called by...") for func in list: cc, nc, tt, ct, callers = self.stats[func] self.print_call_line(width, func, callers) print print return self
def print_call_heading(self, name_size, column_title): print "Function ".ljust(name_size) + column_title
def print_call_line(self, name_size, source, call_dict): print func_std_string(source).ljust(name_size), if not call_dict: print "--" return clist = call_dict.keys() clist.sort() name_size = name_size + 1 indent = "" for func in clist: name = func_std_string(func) print indent*name_size + name + '(%r)' % (call_dict[func],), \ f8(self.stats[func][3]) indent = " "
def print_title(self): print ' ncalls tottime percall cumtime percall', \ 'filename:lineno(function)'
def print_line(self, func): # hack : should print percentages cc, nc, tt, ct, callers = self.stats[func] c = str(nc) if nc != cc: c = c + '/' + str(cc) print c.rjust(9), print f8(tt), if nc == 0: print ' '*8, else: print f8(tt/nc), print f8(ct), if cc == 0: print ' '*8, else: print f8(ct/cc), print func_std_string(func)
def ignore(self): # Deprecated since 1.5.1 -- see the docs. pass # has no return value, so use at end of line :-)
class TupleComp: """This class provides a generic function for comparing any two tuples. Each instance records a list of tuple-indices (from most significant to least significant), and sort direction (ascending or decending) for each tuple-index. The compare functions can then be used as the function argument to the system sort() function when a list of tuples need to be sorted in the instances order."""
def __init__(self, comp_select_list): self.comp_select_list = comp_select_list
def compare (self, left, right): for index, direction in self.comp_select_list: l = left[index] r = right[index] if l < r: return -direction if l > r: return direction return 0
#************************************************************************** # func_name is a triple (file:string, line:int, name:string)
def func_strip_path(func_name): filename, line, name = func_name return os.path.basename(filename), line, name
def func_get_function_name(func): return func[2]
def func_std_string(func_name): # match what old profile produced return "%s:%d(%s)" % func_name
#************************************************************************** # The following functions combine statists for pairs functions. # The bulk of the processing involves correctly handling "call" lists, # such as callers and callees. #**************************************************************************
def add_func_stats(target, source): """Add together all the stats for two profile entries.""" cc, nc, tt, ct, callers = source t_cc, t_nc, t_tt, t_ct, t_callers = target return (cc+t_cc, nc+t_nc, tt+t_tt, ct+t_ct, add_callers(t_callers, callers))
def add_callers(target, source): """Combine two caller lists in a single list.""" new_callers = {} for func, caller in target.iteritems(): new_callers[func] = caller for func, caller in source.iteritems(): if func in new_callers: new_callers[func] = caller + new_callers[func] else: new_callers[func] = caller return new_callers
def count_calls(callers): """Sum the caller statistics to get total number of calls received.""" nc = 0 for calls in callers.itervalues(): nc += calls return nc
#************************************************************************** # The following functions support printing of reports #**************************************************************************
def f8(x): return "%8.3f" % x
#************************************************************************** # Statistics browser added by ESR, April 2001 #**************************************************************************
if __name__ == '__main__': import cmd try: import readline except ImportError: pass
class ProfileBrowser(cmd.Cmd): def __init__(self, profile=None): cmd.Cmd.__init__(self) self.prompt = "% " if profile is not None: self.stats = Stats(profile) else: self.stats = None
def generic(self, fn, line): args = line.split() processed = [] for term in args: try: processed.append(int(term)) continue except ValueError: pass try: frac = float(term) if frac > 1 or frac < 0: print "Fraction argument mus be in [0, 1]" continue processed.append(frac) continue except ValueError: pass processed.append(term) if self.stats: getattr(self.stats, fn)(*processed) else: print "No statistics object is loaded." return 0 def generic_help(self): print "Arguments may be:" print "* An integer maximum number of entries to print." print "* A decimal fractional number between 0 and 1, controlling" print " what fraction of selected entries to print." print "* A regular expression; only entries with function names" print " that match it are printed."
def do_add(self, line): self.stats.add(line) return 0 def help_add(self): print "Add profile info from given file to current statistics object."
def do_callees(self, line): return self.generic('print_callees', line) def help_callees(self): print "Print callees statistics from the current stat object." self.generic_help()
def do_callers(self, line): return self.generic('print_callers', line) def help_callers(self): print "Print callers statistics from the current stat object." self.generic_help()
def do_EOF(self, line): print "" return 1 def help_EOF(self): print "Leave the profile brower."
def do_quit(self, line): return 1 def help_quit(self): print "Leave the profile brower."
def do_read(self, line): if line: try: self.stats = Stats(line) except IOError, args: print args[1] return self.prompt = line + "% " elif len(self.prompt) > 2: line = self.prompt[-2:] else: print "No statistics object is current -- cannot reload." return 0 def help_read(self): print "Read in profile data from a specified file."
def do_reverse(self, line): self.stats.reverse_order() return 0 def help_reverse(self): print "Reverse the sort order of the profiling report."
def do_sort(self, line): abbrevs = self.stats.get_sort_arg_defs() if line and not filter(lambda x,a=abbrevs: x not in a,line.split()): self.stats.sort_stats(*line.split()) else: print "Valid sort keys (unique prefixes are accepted):" for (key, value) in Stats.sort_arg_dict_default.iteritems(): print "%s -- %s" % (key, value[1]) return 0 def help_sort(self): print "Sort profile data according to specified keys." print "(Typing `sort' without arguments lists valid keys.)" def complete_sort(self, text, *args): return [a for a in Stats.sort_arg_dict_default if a.startswith(text)]
def do_stats(self, line): return self.generic('print_stats', line) def help_stats(self): print "Print statistics from the current stat object." self.generic_help()
def do_strip(self, line): self.stats.strip_dirs() return 0 def help_strip(self): print "Strip leading path information from filenames in the report."
def postcmd(self, stop, line): if stop: return stop return None
import sys print "Welcome to the profile statistics browser." if len(sys.argv) > 1: initprofile = sys.argv[1] else: initprofile = None try: ProfileBrowser(initprofile).cmdloop() print "Goodbye." except KeyboardInterrupt: pass
# That's all, folks.
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