CSE2410 Fall 2014 Bounce

#!/usr/bin/env python

#

# scons-time - run SCons timings and collect statistics

#

# A script for running a configuration through SCons with a standard

# set of invocations to collect timing and memory statistics and to

# capture the results in a consistent set of output files for display

# and analysis.

#

#

# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation

#

# Permission is hereby granted, free of charge, to any person obtaining

# a copy of this software and associated documentation files (the

# "Software"), to deal in the Software without restriction, including

# without limitation the rights to use, copy, modify, merge, publish,

# distribute, sublicense, and/or sell copies of the Software, and to

# permit persons to whom the Software is furnished to do so, subject to

# the following conditions:

#

# The above copyright notice and this permission notice shall be included

# in all copies or substantial portions of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY

# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE

# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#

from __future__ import nested_scopes

__revision__ = "src/script/scons-time.py 3842 2008/12/20 22:59:52 scons"

import getopt

import glob

import os

import os.path

import re

import shutil

import string

import sys

import tempfile

import time

try:

    False

except NameError:

    # Pre-2.2 Python has no False keyword.

    import __builtin__

    __builtin__.False = not 1

try:

    True

except NameError:

    # Pre-2.2 Python has no True keyword.

    import __builtin__

    __builtin__.True = not 0

def make_temp_file(**kw):

    try:

        result = tempfile.mktemp(**kw)

        try:

            result = os.path.realpath(result)

        except AttributeError:

            # Python 2.1 has no os.path.realpath() method.

            pass

    except TypeError:

        try:

            save_template = tempfile.template

            prefix = kw['prefix']

            del kw['prefix']

            tempfile.template = prefix

            result = tempfile.mktemp(**kw)

        finally:

            tempfile.template = save_template

    return result

class Plotter:

    def increment_size(self, largest):

        """

        Return the size of each horizontal increment line for a specified

        maximum value.  This returns a value that will provide somewhere

        between 5 and 9 horizontal lines on the graph, on some set of

        boundaries that are multiples of 10/100/1000/etc.

        """

        i = largest / 5

        if not i:

            return largest

        multiplier = 1

        while i >= 10:

            i = i / 10

            multiplier = multiplier * 10

        return i * multiplier

    def max_graph_value(self, largest):

        # Round up to next integer.

        largest = int(largest) + 1

        increment = self.increment_size(largest)

        return ((largest + increment - 1) / increment) * increment

class Line:

    def __init__(self, points, type, title, label, comment, fmt="%s %s"):

        self.points = points

        self.type = type

        self.title = title

        self.label = label

        self.comment = comment

        self.fmt = fmt

    def print_label(self, inx, x, y):

        if self.label:

            print 'set label %s "%s" at %s,%s right' % (inx, self.label, x, y)

    def plot_string(self):

        if self.title:

            title_string = 'title "%s"' % self.title

        else:

            title_string = 'notitle'

        return "'-' %s with lines lt %s" % (title_string, self.type)

    def print_points(self, fmt=None):

        if fmt is None:

            fmt = self.fmt

        if self.comment:

            print '# %s' % self.comment

        for x, y in self.points:

            # If y is None, it usually represents some kind of break

            # in the line's index number.  We might want to represent

            # this some way rather than just drawing the line straight

            # between the two points on either side.

            if not y is None:

                print fmt % (x, y)

        print 'e'

    def get_x_values(self):

        return [ p[0] for p in self.points ]

    def get_y_values(self):

        return [ p[1] for p in self.points ]

class Gnuplotter(Plotter):

    def __init__(self, title, key_location):

        self.lines = []

        self.title = title

        self.key_location = key_location

    def line(self, points, type, title=None, label=None, comment=None, fmt='%s %s'):

        if points:

            line = Line(points, type, title, label, comment, fmt)

            self.lines.append(line)

    def plot_string(self, line):

        return line.plot_string()

    def vertical_bar(self, x, type, label, comment):

        if self.get_min_x() <= x and x <= self.get_max_x():

            points = [(x, 0), (x, self.max_graph_value(self.get_max_y()))]

            self.line(points, type, label, comment)

    def get_all_x_values(self):

        result = []

        for line in self.lines:

            result.extend(line.get_x_values())

        return filter(lambda r: not r is None, result)

    def get_all_y_values(self):

        result = []

        for line in self.lines:

            result.extend(line.get_y_values())

        return filter(lambda r: not r is None, result)

    def get_min_x(self):

        try:

            return self.min_x

        except AttributeError:

            try:

                self.min_x = min(self.get_all_x_values())

            except ValueError:

                self.min_x = 0

            return self.min_x

    def get_max_x(self):

        try:

            return self.max_x

        except AttributeError:

            try:

                self.max_x = max(self.get_all_x_values())

            except ValueError:

                self.max_x = 0

            return self.max_x

    def get_min_y(self):

        try:

            return self.min_y

        except AttributeError:

            try:

                self.min_y = min(self.get_all_y_values())

            except ValueError:

                self.min_y = 0

            return self.min_y

    def get_max_y(self):

        try:

            return self.max_y

        except AttributeError:

            try:

                self.max_y = max(self.get_all_y_values())

            except ValueError:

                self.max_y = 0

            return self.max_y

    def draw(self):

        if not self.lines:

            return

        if self.title:

            print 'set title "%s"' % self.title

        print 'set key %s' % self.key_location

        min_y = self.get_min_y()

        max_y = self.max_graph_value(self.get_max_y())

        range = max_y - min_y

        incr = range / 10.0

        start = min_y + (max_y / 2.0) + (2.0 * incr)

        position = [ start - (i * incr) for i in xrange(5) ]

        inx = 1

        for line in self.lines:

            line.print_label(inx, line.points[0][0]-1,

                             position[(inx-1) % len(position)])

            inx += 1

        plot_strings = [ self.plot_string(l) for l in self.lines ]

        print 'plot ' + ', \\\n     '.join(plot_strings)

        for line in self.lines:

            line.print_points()

def untar(fname):

    import tarfile

    tar = tarfile.open(name=fname, mode='r')

    for tarinfo in tar:

        tar.extract(tarinfo)

    tar.close()

def unzip(fname):

    import zipfile

    zf = zipfile.ZipFile(fname, 'r')

    for name in zf.namelist():

        dir = os.path.dirname(name)

        try:

            os.makedirs(dir)

        except:

            pass

        open(name, 'w').write(zf.read(name))

def read_tree(dir):

    def read_files(arg, dirname, fnames):

        for fn in fnames:

            fn = os.path.join(dirname, fn)

            if os.path.isfile(fn):

                open(fn, 'rb').read()

    os.path.walk('.', read_files, None)

def redirect_to_file(command, log):

    return '%s > %s 2>&1' % (command, log)

def tee_to_file(command, log):

    return '%s 2>&1 | tee %s' % (command, log)

class SConsTimer:

    """

    Usage: scons-time SUBCOMMAND [ARGUMENTS]

    Type "scons-time help SUBCOMMAND" for help on a specific subcommand.

    Available subcommands:

        func            Extract test-run data for a function

        help            Provides help

        mem             Extract --debug=memory data from test runs

        obj             Extract --debug=count data from test runs

        time            Extract --debug=time data from test runs

        run             Runs a test configuration

    """

    name = 'scons-time'

    name_spaces = ' '*len(name)

    def makedict(**kw):

        return kw

    default_settings = makedict(

        aegis               = 'aegis',

        aegis_project       = None,

        chdir               = None,

        config_file         = None,

        initial_commands    = [],

        key_location        = 'bottom left',

        orig_cwd            = os.getcwd(),

        outdir              = None,

        prefix              = '',

        python              = '"%s"' % sys.executable,

        redirect            = redirect_to_file,

        scons               = None,

        scons_flags         = '--debug=count --debug=memory --debug=time --debug=memoizer',

        scons_lib_dir       = None,

        scons_wrapper       = None,

        startup_targets     = '--help',

        subdir              = None,

        subversion_url      = None,

        svn                 = 'svn',

        svn_co_flag         = '-q',

        tar                 = 'tar',

        targets             = '',

        targets0            = None,

        targets1            = None,

        targets2            = None,

        title               = None,

        unzip               = 'unzip',

        verbose             = False,

        vertical_bars       = [],

        unpack_map = {

            '.tar.gz'       : (untar,   '%(tar)s xzf %%s'),

            '.tgz'          : (untar,   '%(tar)s xzf %%s'),

            '.tar'          : (untar,   '%(tar)s xf %%s'),

            '.zip'          : (unzip,   '%(unzip)s %%s'),

        },

    )

    run_titles = [

        'Startup',

        'Full build',

        'Up-to-date build',

    ]

    run_commands = [

        '%(python)s %(scons_wrapper)s %(scons_flags)s --profile=%(prof0)s %(targets0)s',

        '%(python)s %(scons_wrapper)s %(scons_flags)s --profile=%(prof1)s %(targets1)s',

        '%(python)s %(scons_wrapper)s %(scons_flags)s --profile=%(prof2)s %(targets2)s',

    ]

    stages = [

        'pre-read',

        'post-read',

        'pre-build',

        'post-build',

    ]

    stage_strings = {

        'pre-read'      : 'Memory before reading SConscript files:',

        'post-read'     : 'Memory after reading SConscript files:',

        'pre-build'     : 'Memory before building targets:',

        'post-build'    : 'Memory after building targets:',

    }

    memory_string_all = 'Memory '

    default_stage = stages[-1]

    time_strings = {

        'total'         : 'Total build time',

        'SConscripts'   : 'Total SConscript file execution time',

        'SCons'         : 'Total SCons execution time',

        'commands'      : 'Total command execution time',

    }

    time_string_all = 'Total .* time'

    #

    def __init__(self):

        self.__dict__.update(self.default_settings)

    # Functions for displaying and executing commands.

    def subst(self, x, dictionary):

        try:

            return x % dictionary

        except TypeError:

            # x isn't a string (it's probably a Python function),

            # so just return it.

            return x

    def subst_variables(self, command, dictionary):

        """

        Substitutes (via the format operator) the values in the specified

        dictionary into the specified command.

        The command can be an (action, string) tuple.  In all cases, we

        perform substitution on strings and don't worry if something isn't

        a string.  (It's probably a Python function to be executed.)

        """

        try:

            command + ''

        except TypeError:

            action = command[0]

            string = command[1]

            args = command[2:]

        else:

            action = command

            string = action

            args = (())

        action = self.subst(action, dictionary)

        string = self.subst(string, dictionary)

        return (action, string, args)

    def _do_not_display(self, msg, *args):

        pass

    def display(self, msg, *args):

        """

        Displays the specified message.

        Each message is prepended with a standard prefix of our name

        plus the time.

        """

        if callable(msg):

            msg = msg(*args)

        else:

            msg = msg % args

        if msg is None:

            return

        fmt = '%s[%s]: %s\n'

        sys.stdout.write(fmt % (self.name, time.strftime('%H:%M:%S'), msg))

    def _do_not_execute(self, action, *args):

        pass

    def execute(self, action, *args):

        """

        Executes the specified action.

        The action is called if it's a callable Python function, and

        otherwise passed to os.system().

        """

        if callable(action):

            action(*args)

        else:

            os.system(action % args)

    def run_command_list(self, commands, dict):

        """

        Executes a list of commands, substituting values from the

        specified dictionary.

        """

        commands = [ self.subst_variables(c, dict) for c in commands ]

        for action, string, args in commands:

            self.display(string, *args)

            sys.stdout.flush()

            status = self.execute(action, *args)

            if status:

                sys.exit(status)

    def log_display(self, command, log):

        command = self.subst(command, self.__dict__)

        if log:

            command = self.redirect(command, log)

        return command

    def log_execute(self, command, log):

        command = self.subst(command, self.__dict__)

        output = os.popen(command).read()

        if self.verbose:

            sys.stdout.write(output)

        open(log, 'wb').write(output)

    #

    def archive_splitext(self, path):

        """

        Splits an archive name into a filename base and extension.

        This is like os.path.splitext() (which it calls) except that it

        also looks for '.tar.gz' and treats it as an atomic extensions.

        """

        if path.endswith('.tar.gz'):

            return path[:-7], path[-7:]

        else:

            return os.path.splitext(path)

    def args_to_files(self, args, tail=None):

        """

        Takes a list of arguments, expands any glob patterns, and

        returns the last "tail" files from the list.

        """

        files = []

        for a in args:

            g = glob.glob(a)

            g.sort()

            files.extend(g)

        if tail:

            files = files[-tail:]

        return files

    def ascii_table(self, files, columns,

                    line_function, file_function=lambda x: x,

                    *args, **kw):

        header_fmt = ' '.join(['%12s'] * len(columns))

        line_fmt = header_fmt + '    %s'

        print header_fmt % columns

        for file in files:

            t = line_function(file, *args, **kw)

            if t is None:

                t = []

            diff = len(columns) - len(t)

            if diff > 0:

                t += [''] * diff

            t.append(file_function(file))

            print line_fmt % tuple(t)

    def collect_results(self, files, function, *args, **kw):

        results = {}

        for file in files:

            base = os.path.splitext(file)[0]

            run, index = string.split(base, '-')[-2:]

            run = int(run)

            index = int(index)

            value = function(file, *args, **kw)

            try:

                r = results[index]

            except KeyError:

                r = []

                results[index] = r

            r.append((run, value))

        return results

    def doc_to_help(self, obj):

        """

        Translates an object's __doc__ string into help text.

        This strips a consistent number of spaces from each line in the

        help text, essentially "outdenting" the text to the left-most

        column.

        """

        doc = obj.__doc__

        if doc is None:

            return ''

        return self.outdent(doc)

    def find_next_run_number(self, dir, prefix):

        """

        Returns the next run number in a directory for the specified prefix.

        Examines the contents the specified directory for files with the

        specified prefix, extracts the run numbers from each file name,

        and returns the next run number after the largest it finds.

        """

        x = re.compile(re.escape(prefix) + '-([0-9]+).*')

        matches = map(lambda e, x=x: x.match(e), os.listdir(dir))

        matches = filter(None, matches)

        if not matches:

            return 0

        run_numbers = map(lambda m: int(m.group(1)), matches)

        return int(max(run_numbers)) + 1

    def gnuplot_results(self, results, fmt='%s %.3f'):

        """

        Prints out a set of results in Gnuplot format.

        """

        gp = Gnuplotter(self.title, self.key_location)

        indices = results.keys()

        indices.sort()

        for i in indices:

            try:

                t = self.run_titles[i]

            except IndexError:

                t = '??? %s ???' % i

            results[i].sort()

            gp.line(results[i], i+1, t, None, t, fmt=fmt)

        for bar_tuple in self.vertical_bars:

            try:

                x, type, label, comment = bar_tuple

            except ValueError:

                x, type, label = bar_tuple

                comment = label

            gp.vertical_bar(x, type, label, comment)

        gp.draw()

    def logfile_name(self, invocation):

        """

        Returns the absolute path of a log file for the specificed

        invocation number.

        """

        name = self.prefix_run + '-%d.log' % invocation

        return os.path.join(self.outdir, name)

    def outdent(self, s):

        """

        Strip as many spaces from each line as are found at the beginning

        of the first line in the list.

        """

        lines = s.split('\n')

        if lines[0] == '':

            lines = lines[1:]

        spaces = re.match(' *', lines[0]).group(0)

        def strip_initial_spaces(l, s=spaces):

            if l.startswith(spaces):

                l = l[len(spaces):]

            return l

        return '\n'.join([ strip_initial_spaces(l) for l in lines ]) + '\n'

    def profile_name(self, invocation):

        """

        Returns the absolute path of a profile file for the specified

        invocation number.

        """

        name = self.prefix_run + '-%d.prof' % invocation

        return os.path.join(self.outdir, name)

    def set_env(self, key, value):

        os.environ[key] = value

    #

    def get_debug_times(self, file, time_string=None):

        """

        Fetch times from the --debug=time strings in the specified file.

        """

        if time_string is None:

            search_string = self.time_string_all

        else:

            search_string = time_string

        contents = open(file).read()

        if not contents:

            sys.stderr.write('file %s has no contents!\n' % repr(file))

            return None

        result = re.findall(r'%s: ([\d\.]*)' % search_string, contents)[-4:]

        result = [ float(r) for r in result ]

        if not time_string is None:

            try:

                result = result[0]

            except IndexError:

                sys.stderr.write('file %s has no results!\n' % repr(file))

                return None

        return result

    def get_function_profile(self, file, function):

        """

        Returns the file, line number, function name, and cumulative time.

        """

        try:

            import pstats

        except ImportError, e:

            sys.stderr.write('%s: func: %s\n' % (self.name, e))

            sys.stderr.write('%s  This version of Python is missing the profiler.\n' % self.name_spaces)

            sys.stderr.write('%s  Cannot use the "func" subcommand.\n' % self.name_spaces)

            sys.exit(1)

        statistics = pstats.Stats(file).stats

        matches = [ e for e in statistics.items() if e[0][2] == function ]

        r = matches[0]

        return r[0][0], r[0][1], r[0][2], r[1][3]

    def get_function_time(self, file, function):

        """

        Returns just the cumulative time for the specified function.

        """

        return self.get_function_profile(file, function)[3]

    def get_memory(self, file, memory_string=None):

        """

        Returns a list of integers of the amount of memory used.  The

        default behavior is to return all the stages.

        """

        if memory_string is None:

            search_string = self.memory_string_all

        else:

            search_string = memory_string

        lines = open(file).readlines()

        lines = [ l for l in lines if l.startswith(search_string) ][-4:]

        result = [ int(l.split()[-1]) for l in lines[-4:] ]

        if len(result) == 1:

            result = result[0]

        return result

    def get_object_counts(self, file, object_name, index=None):

        """

        Returns the counts of the specified object_name.

        """

        object_string = ' ' + object_name + '\n'

        lines = open(file).readlines()

        line = [ l for l in lines if l.endswith(object_string) ][0]

        result = [ int(field) for field in line.split()[:4] ]

        if not index is None:

            result = result[index]

        return result

    #

    command_alias = {}

    def execute_subcommand(self, argv):

        """

        Executes the do_*() function for the specified subcommand (argv[0]).

        """

        if not argv:

            return

        cmdName = self.command_alias.get(argv[0], argv[0])

        try:

            func = getattr(self, 'do_' + cmdName)

        except AttributeError:

            return self.default(argv)

        try:

            return func(argv)

        except TypeError, e:

            sys.stderr.write("%s %s: %s\n" % (self.name, cmdName, e))

            import traceback

            traceback.print_exc(file=sys.stderr)

            sys.stderr.write("Try '%s help %s'\n" % (self.name, cmdName))

    def default(self, argv):

        """

        The default behavior for an unknown subcommand.  Prints an

        error message and exits.

        """

        sys.stderr.write('%s: Unknown subcommand "%s".\n' % (self.name, argv[0]))

        sys.stderr.write('Type "%s help" for usage.\n' % self.name)

        sys.exit(1)

    #

    def do_help(self, argv):

        """

        """

        if argv[1:]:

            for arg in argv[1:]:

                try:

                    func = getattr(self, 'do_' + arg)

                except AttributeError:

                    sys.stderr.write('%s: No help for "%s"\n' % (self.name, arg))

                else:

                    try:

                        help = getattr(self, 'help_' + arg)

                    except AttributeError:

                        sys.stdout.write(self.doc_to_help(func))

                        sys.stdout.flush()

                    else:

                        help()

        else:

            doc = self.doc_to_help(self.__class__)

            if doc:

                sys.stdout.write(doc)

            sys.stdout.flush()

            return None

    #

    def help_func(self):

        help = """\

        Usage: scons-time func [OPTIONS] FILE [...]

          -C DIR, --chdir=DIR           Change to DIR before looking for files

          -f FILE, --file=FILE          Read configuration from specified FILE

          --fmt=FORMAT, --format=FORMAT Print data in specified FORMAT

          --func=NAME, --function=NAME  Report time for function NAME

          -h, --help                    Print this help and exit

          -p STRING, --prefix=STRING    Use STRING as log file/profile prefix

          -t NUMBER, --tail=NUMBER      Only report the last NUMBER files

          --title=TITLE                 Specify the output plot TITLE

        """

        sys.stdout.write(self.outdent(help))

        sys.stdout.flush()

    def do_func(self, argv):

        """

        """

        format = 'ascii'

        function_name = '_main'

        tail = None

        short_opts = '?C:f:hp:t:'

        long_opts = [

            'chdir=',

            'file=',

            'fmt=',

            'format=',

            'func=',

            'function=',

            'help',

            'prefix=',

            'tail=',

            'title=',

        ]

        opts, args = getopt.getopt(argv[1:], short_opts, long_opts)

        for o, a in opts:

            if o in ('-C', '--chdir'):

                self.chdir = a

            elif o in ('-f', '--file'):

                self.config_file = a

            elif o in ('--fmt', '--format'):

                format = a

            elif o in ('--func', '--function'):

                function_name = a

            elif o in ('-?', '-h', '--help'):

                self.do_help(['help', 'func'])

                sys.exit(0)

            elif o in ('--max',):

                max_time = int(a)

            elif o in ('-p', '--prefix'):

                self.prefix = a

            elif o in ('-t', '--tail'):

                tail = int(a)

            elif o in ('--title',):

                self.title = a

        if self.config_file:

            execfile(self.config_file, self.__dict__)

        if self.chdir:

            os.chdir(self.chdir)

        if not args:

            pattern = '%s*.prof' % self.prefix

            args = self.args_to_files([pattern], tail)

            if not args:

                if self.chdir:

                    directory = self.chdir

                else:

                    directory = os.getcwd()

                sys.stderr.write('%s: func: No arguments specified.\n' % self.name)

                sys.stderr.write('%s  No %s*.prof files found in "%s".\n' % (self.name_spaces, self.prefix, directory))

                sys.stderr.write('%s  Type "%s help func" for help.\n' % (self.name_spaces, self.name))

                sys.exit(1)

        else:

            args = self.args_to_files(args, tail)

        cwd_ = os.getcwd() + os.sep

        if format == 'ascii':

            def print_function_timing(file, func):

                try:

                    f, line, func, time = self.get_function_profile(file, func)

                except ValueError, e:

                    sys.stderr.write("%s: func: %s: %s\n" % (self.name, file, e))

                else:

                    if f.startswith(cwd_):

                        f = f[len(cwd_):]

                    print "%.3f %s:%d(%s)" % (time, f, line, func)

            for file in args:

                print_function_timing(file, function_name)

        elif format == 'gnuplot':

            results = self.collect_results(args, self.get_function_time,

                                           function_name)

            self.gnuplot_results(results)

        else:

            sys.stderr.write('%s: func: Unknown format "%s".\n' % (self.name, format))

            sys.exit(1)

    #

    def help_mem(self):

        help = """\

        Usage: scons-time mem [OPTIONS] FILE [...]

          -C DIR, --chdir=DIR           Change to DIR before looking for files

          -f FILE, --file=FILE          Read configuration from specified FILE

          --fmt=FORMAT, --format=FORMAT Print data in specified FORMAT

          -h, --help                    Print this help and exit

          -p STRING, --prefix=STRING    Use STRING as log file/profile prefix

          --stage=STAGE                 Plot memory at the specified stage:

                                          pre-read, post-read, pre-build,

                                          post-build (default: post-build)

          -t NUMBER, --tail=NUMBER      Only report the last NUMBER files

          --title=TITLE                 Specify the output plot TITLE

        """

        sys.stdout.write(self.outdent(help))

        sys.stdout.flush()

    def do_mem(self, argv):

        format = 'ascii'

        logfile_path = lambda x: x

        stage = self.default_stage

        tail = None

        short_opts = '?C:f:hp:t:'

        long_opts = [

            'chdir=',

            'file=',

            'fmt=',

            'format=',

            'help',

            'prefix=',

            'stage=',

            'tail=',

            'title=',

        ]

        opts, args = getopt.getopt(argv[1:], short_opts, long_opts)

        for o, a in opts:

            if o in ('-C', '--chdir'):

                self.chdir = a

            elif o in ('-f', '--file'):

                self.config_file = a

            elif o in ('--fmt', '--format'):

                format = a

            elif o in ('-?', '-h', '--help'):

                self.do_help(['help', 'mem'])

                sys.exit(0)

            elif o in ('-p', '--prefix'):

                self.prefix = a

            elif o in ('--stage',):

                if not a in self.stages:

                    sys.stderr.write('%s: mem: Unrecognized stage "%s".\n' % (self.name, a))

                    sys.exit(1)

                stage = a

            elif o in ('-t', '--tail'):

                tail = int(a)

            elif o in ('--title',):

                self.title = a

        if self.config_file:

            execfile(self.config_file, self.__dict__)

        if self.chdir:

            os.chdir(self.chdir)

            logfile_path = lambda x, c=self.chdir: os.path.join(c, x)

        if not args:

            pattern = '%s*.log' % self.prefix

            args = self.args_to_files([pattern], tail)

            if not args:

                if self.chdir:

                    directory = self.chdir

                else:

                    directory = os.getcwd()

                sys.stderr.write('%s: mem: No arguments specified.\n' % self.name)

                sys.stderr.write('%s  No %s*.log files found in "%s".\n' % (self.name_spaces, self.prefix, directory))

                sys.stderr.write('%s  Type "%s help mem" for help.\n' % (self.name_spaces, self.name))

                sys.exit(1)

        else:

            args = self.args_to_files(args, tail)

        cwd_ = os.getcwd() + os.sep

        if format == 'ascii':

            self.ascii_table(args, tuple(self.stages), self.get_memory, logfile_path)

        elif format == 'gnuplot':

            results = self.collect_results(args, self.get_memory,

                                           self.stage_strings[stage])

            self.gnuplot_results(results)

        else:

            sys.stderr.write('%s: mem: Unknown format "%s".\n' % (self.name, format))

            sys.exit(1)

        return 0

    #

    def help_obj(self):

        help = """\

        Usage: scons-time obj [OPTIONS] OBJECT FILE [...]

          -C DIR, --chdir=DIR           Change to DIR before looking for files

          -f FILE, --file=FILE          Read configuration from specified FILE

          --fmt=FORMAT, --format=FORMAT Print data in specified FORMAT

          -h, --help                    Print this help and exit

          -p STRING, --prefix=STRING    Use STRING as log file/profile prefix

          --stage=STAGE                 Plot memory at the specified stage:

                                          pre-read, post-read, pre-build,

                                          post-build (default: post-build)

          -t NUMBER, --tail=NUMBER      Only report the last NUMBER files

          --title=TITLE                 Specify the output plot TITLE

        """

        sys.stdout.write(self.outdent(help))

        sys.stdout.flush()

    def do_obj(self, argv):

        format = 'ascii'

        logfile_path = lambda x: x

        stage = self.default_stage

        tail = None

        short_opts = '?C:f:hp:t:'

        long_opts = [

            'chdir=',

            'file=',

            'fmt=',

            'format=',

            'help',

            'prefix=',

            'stage=',

            'tail=',

            'title=',

        ]

        opts, args = getopt.getopt(argv[1:], short_opts, long_opts)

        for o, a in opts:

            if o in ('-C', '--chdir'):

                self.chdir = a

            elif o in ('-f', '--file'):

                self.config_file = a

            elif o in ('--fmt', '--format'):

                format = a

            elif o in ('-?', '-h', '--help'):

                self.do_help(['help', 'obj'])

                sys.exit(0)

            elif o in ('-p', '--prefix'):

                self.prefix = a

            elif o in ('--stage',):

                if not a in self.stages:

                    sys.stderr.write('%s: obj: Unrecognized stage "%s".\n' % (self.name, a))

                    sys.stderr.write('%s       Type "%s help obj" for help.\n' % (self.name_spaces, self.name))

                    sys.exit(1)

                stage = a

            elif o in ('-t', '--tail'):

                tail = int(a)

            elif o in ('--title',):

                self.title = a

        if not args:

            sys.stderr.write('%s: obj: Must specify an object name.\n' % self.name)

            sys.stderr.write('%s       Type "%s help obj" for help.\n' % (self.name_spaces, self.name))

            sys.exit(1)

        object_name = args.pop(0)

        if self.config_file:

            execfile(self.config_file, self.__dict__)

        if self.chdir:

            os.chdir(self.chdir)

            logfile_path = lambda x, c=self.chdir: os.path.join(c, x)

        if not args:

            pattern = '%s*.log' % self.prefix

            args = self.args_to_files([pattern], tail)