Trace exceptions
#!/usr/bin/env python
# $Id: trace.py,v 1.9 1999/08/20 20:44:24 skip Exp $
#
# Copyright 1995-1997, Automatrix, Inc., all rights reserved.
# Author: Skip Montanaro
#
# Copyright 1991-1995, Stichting Mathematisch Centrum, all rights reserved.
#
# Permission to use, copy, modify, and distribute this Python software and
# its associated documentation for any purpose 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 Automatrix not be used in
# advertising or publicity pertaining to distribution of the software
# without specific, written prior permission.
#
# Summary of recent changes:
# Added run-time display of statements being executed
# Incorporated portability and performance fixes from Greg Stein
# Incorporated main program from Michael Scharf
# Sample use:
# # create a StatementCoverage object, telling it where you want output
# t = trace.StatementCoverage('/usr/local/Automatrix/concerts/coverage')
# # run the application or function
# t.run('main()')
# # generate annotated listings, excluding several system modules
# t.list(exclude_list=['regsub.py', 'string.py', 'copy.py',
# 'traceback.py'])
import sys, time
from string import split, rstrip
class StatementCoverage:
# by default, any coverage files are written in the current
# directory
def __init__(self, dir = '.', verbose=0, dotimes=0):
import marshal, os, stat
self.tracedir = dir
self.docounts = (not verbose)
self.files = {'<string>': None}
status = os.stat(self.tracedir)
if not stat.S_ISDIR(status[stat.ST_MODE]):
import tempfile
d = tempfile.gettempdir()
sys.stderr.write('%s: %s is not a directory - using %s instead...\n' %
(__name__, self.tracedir, d))
self.tracedir = d
self.counts = {}
self.counts_file = os.path.join(self.tracedir, 'counts')
try:
self.counts = marshal.load(open(self.counts_file, 'rb'))
except IOError:
self.counts = {}
self.dotimes = dotimes
self.time = time.clock()
self.last_key = None
# straight from profile.py
def run(self, cmd):
import __main__
dict = __main__.__dict__
self.runctx(cmd, dict, dict)
# from profile.py, with obvious changes
def runctx(self, cmd, globals=None, locals=None):
if globals is None: globals = {}
if locals is None: locals = {}
sys.settrace(self.trace)
try:
exec cmd in globals, locals
finally:
sys.settrace(None)
def runfunc(self, func, *args, **kw):
result = None
sys.settrace(self.trace)
try:
result = apply(func, args, kw)
finally:
sys.settrace(None)
return result
# thanks to Greg Stein for speeding this up somewhat...
def trace(self, frame, why, arg):
if why == 'line':
if self.docounts:
if self.dotimes and self.last_key is not None:
# time increment is for the previous line
newt = time.clock()
count, t = self.counts[self.last_key]
t = t + newt - self.time
self.counts[self.last_key] = count, t
self.time = time.clock()
# counter is for this line
key = self.last_key = \
(frame.f_code.co_filename, frame.f_lineno)
try:
count, t = self.counts[key]
except KeyError:
count, t = (0, 0.0)
count = count+1
self.counts[key] = (count, t)
else:
# display the current line being executed...
fname = frame.f_code.co_filename
line = frame.f_lineno
files = self.files
if fname != '<string>' and not files.has_key(fname):
try:
files[fname] = map(rstrip, open(fname).readlines())
except IOError:
files[fname] = None
if files[fname] != None:
print '%s(%d): %s' % (split(fname, '/')[-1], line,
files[fname][line-1])
else:
print '%s(%d): ??' % (split(fname, '/')[-1], line)
return self.trace
# create an annotated listing file for each Python module.
# note that statements like
# for i in range(len(foo)): foo[i] = foo[i] + 1
# count both the for statement and the assignment statement.
# this is only a small nit for my purposes. if you are
# so inclined, feel free to correct things
#
# use exclude_list to exclude modules from being listed
#
def list(self, exclude_list=[]):
from string import split, join, expandtabs
import stat, sys, marshal, os, regex
marshal.dump(self.counts, open(self.counts_file, 'wb'))
per_file = { }
for fname, lineno in self.counts.keys():
try:
lines_hit = per_file[fname]
except KeyError:
lines_hit = per_file[fname] = { }
lines_hit[lineno] = self.counts[(fname, lineno)]
blank = regex.compile('[ \t\r\n]*\(\|#.*\)$')
for fname in per_file.keys():
if fname == '<string>' or os.path.basename(fname) in exclude_list:
continue
try:
lines = open(fname, 'r').readlines()
except IOError:
sys.stderr.write('%s: Could not open %s for reading - skipping\n' %
(__name__, fname))
continue
lines_hit = per_file[fname]
# build list file name by appending 'l' to filename component of
# input and tacking it onto the trace directory
file = os.path.join(self.tracedir, os.path.basename(fname) + 'l')
try:
out = open(file, 'w')
except IOError:
sys.stderr.write('%s: Could not open %s for writing - skipping\n' %
(__name__, file))
continue
for i in range(len(lines)):
line = lines[i]
# do the blank/comment match to try to mark more lines
# (help the reader find stuff that hasn't been covered)
if lines_hit.has_key(i+1):
count, t = lines_hit[i+1]
# count precedes the lines that we captured
if self.dotimes:
out.write('%5d(%7.3fs): ' % (count, t))
else:
out.write('%5d: ' % count)
elif blank.match(line) != -1:
# blank lines and comments are preceded by dots
out.write(' . ')
else:
# lines preceded by no marks weren't hit
out.write('#'*16)
out.write(expandtabs(lines[i], 8))
out.close()
def main():
import os
# split the args into two parts
dir='.'
verbose=0
dotimes=0
n=len(sys.argv)
if n==1:
sys.stderr.write("%s [-v] [-d directory] program {arg}\n"%sys.argv[0])
sys.exit(-1)
i=1
while i<n:
arg=sys.argv[i]
if arg=='-d':
i=i+1
dir=arg=sys.argv[i]
elif arg=='-v':
verbose=1
elif arg=='-t':
dotimes=1
else:
break
i=i+1
prog_argv=sys.argv[i:]
# set the sys.argv
sys.argv=prog_argv
# set the first entry of path to the path of the
# main program
progname=prog_argv[0]
if eval(sys.version[:3])>1.3:
sys.path[0]=os.path.split(progname)[0]
tracer=StatementCoverage(dir,verbose,dotimes)
tracer.run('execfile(' + 'progname' + ')')
if __name__=='__main__':
main()
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