#!/usr/local/bin/python -O """ A Python Benchmark Suite """## Note: Please keep this module compatible to Python 1.5.2.## Tests may include features in later Python versions, but these# should then be embedded in try-except clauses in the configuration# module Setup.py.# # pybench Copyright__copyright__ = """\Copyright (c), 1997-2006, Marc-Andre Lemburg (mal@lemburg.com)Copyright (c), 2000-2006, eGenix.com Software GmbH (info@egenix.com)                    All Rights Reserved. Permission to use, copy, modify, and distribute this software and itsdocumentation for any purpose and without fee or royalty is herebygranted, provided that the above copyright notice appear in all copiesand that both that copyright notice and this permission notice appearin supporting documentation or portions thereof, includingmodifications, that you make. THE AUTHOR MARC-ANDRE LEMBURG DISCLAIMS ALL WARRANTIES WITH REGARD TOTHIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY ANDFITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTINGFROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTIONWITH THE USE OR PERFORMANCE OF THIS SOFTWARE !""" import sys, time, operator, stringfrom CommandLine import * try:    import cPickle    pickle = cPickleexcept ImportError:    import pickle # Version number; version history: see README file !__version__ = '2.0' ### Constants # Second fractionsMILLI_SECONDS = 1e3MICRO_SECONDS = 1e6 # Percent unitPERCENT = 100 # Horizontal line lengthLINE = 79 # Minimum test run-timeMIN_TEST_RUNTIME = 1e-3 # Number of calibration runs to use for calibrating the testsCALIBRATION_RUNS = 20 # Number of calibration loops to run for each calibration runCALIBRATION_LOOPS = 20 # Allow skipping calibration ?ALLOW_SKIPPING_CALIBRATION = 1 # Timer typesTIMER_TIME_TIME = 'time.time'TIMER_TIME_CLOCK = 'time.clock'TIMER_SYSTIMES_PROCESSTIME = 'systimes.processtime' # Choose platform default timerif sys.platform[:3] == 'win':    # On WinXP this has 2.5ms resolution    TIMER_PLATFORM_DEFAULT = TIMER_TIME_CLOCKelse:    # On Linux this has 1ms resolution    TIMER_PLATFORM_DEFAULT = TIMER_TIME_TIME # Print debug information ?_debug = 0 ### Helpers def get_timer(timertype):     if timertype == TIMER_TIME_TIME:        return time.time    elif timertype == TIMER_TIME_CLOCK:        return time.clock    elif timertype == TIMER_SYSTIMES_PROCESSTIME:        import systimes        return systimes.processtime    else:        raise TypeError('unknown timer type: %s' % timertype) def get_machine_details():     import platform    if _debug:        print 'Getting machine details...'    buildno, builddate = platform.python_build()    python = platform.python_version()    if python > '2.0':        try:            unichr(100000)        except ValueError:            # UCS2 build (standard)            unicode = 'UCS2'        else:            # UCS4 build (most recent Linux distros)            unicode = 'UCS4'    else:        unicode = None    bits, linkage = platform.architecture()    return {        'platform': platform.platform(),        'processor': platform.processor(),        'executable': sys.executable,        'python': platform.python_version(),        'compiler': platform.python_compiler(),        'buildno': buildno,        'builddate': builddate,        'unicode': unicode,        'bits': bits,        } def print_machine_details(d, indent=''):     l = ['Machine Details:',         '   Platform ID:  %s' % d.get('platform', 'n/a'),         '   Processor:    %s' % d.get('processor', 'n/a'),         '',         'Python:',         '   Executable:   %s' % d.get('executable', 'n/a'),         '   Version:      %s' % d.get('python', 'n/a'),         '   Compiler:     %s' % d.get('compiler', 'n/a'),         '   Bits:         %s' % d.get('bits', 'n/a'),         '   Build:        %s (#%s)' % (d.get('builddate', 'n/a'),                                        d.get('buildno', 'n/a')),         '   Unicode:      %s' % d.get('unicode', 'n/a'),         ]    print indent + string.join(l, '\n' + indent) + '\n' ### Test baseclass class Test:     """ All test must have this class as baseclass. It provides        the necessary interface to the benchmark machinery.         The tests must set .rounds to a value high enough to let the        test run between 20-50 seconds. This is needed because        clock()-timing only gives rather inaccurate values (on Linux,        for example, it is accurate to a few hundreths of a        second). If you don't want to wait that long, use a warp        factor larger than 1.         It is also important to set the .operations variable to a        value representing the number of "virtual operations" done per        call of .run().         If you change a test in some way, don't forget to increase        it's version number.     """     ### Instance variables that each test should override     # Version number of the test as float (x.yy); this is important    # for comparisons of benchmark runs - tests with unequal version    # number will not get compared.    version = 2.0     # The number of abstract operations done in each round of the    # test. An operation is the basic unit of what you want to    # measure. The benchmark will output the amount of run-time per    # operation. Note that in order to raise the measured timings    # significantly above noise level, it is often required to repeat    # sets of operations more than once per test round. The measured    # overhead per test round should be less than 1 second.    operations = 1     # Number of rounds to execute per test run. This should be    # adjusted to a figure that results in a test run-time of between    # 1-2 seconds.    rounds = 100000     ### Internal variables     # Mark this class as implementing a test    is_a_test = 1     # Last timing: (real, run, overhead)    last_timing = (0.0, 0.0, 0.0)     # Warp factor to use for this test    warp = 1     # Number of calibration runs to use    calibration_runs = CALIBRATION_RUNS     # List of calibration timings    overhead_times = None     # List of test run timings    times = []     # Timer used for the benchmark    timer = TIMER_PLATFORM_DEFAULT     def __init__(self, warp=None, calibration_runs=None, timer=None):         # Set parameters        if warp is not None:            self.rounds = int(self.rounds / warp)            if self.rounds == 0:                raise ValueError('warp factor set too high')            self.warp = warp        if calibration_runs is not None:            if (not ALLOW_SKIPPING_CALIBRATION and                calibration_runs < 1):                raise ValueError('at least one calibration run is required')            self.calibration_runs = calibration_runs        if timer is not None:            timer = timer         # Init variables        self.times = []        self.overhead_times = []         # We want these to be in the instance dict, so that pickle        # saves them        self.version = self.version        self.operations = self.operations        self.rounds = self.rounds     def get_timer(self):         """ Return the timer function to use for the test.         """        return get_timer(self.timer)     def compatible(self, other):         """ Return 1/0 depending on whether the test is compatible            with the other Test instance or not.         """        if self.version != other.version:            return 0        if self.rounds != other.rounds:            return 0        return 1     def calibrate_test(self):         if self.calibration_runs == 0:            self.overhead_times = [0.0]            return         calibrate = self.calibrate        timer = self.get_timer()        calibration_loops = range(CALIBRATION_LOOPS)         # Time the calibration loop overhead        prep_times = []        for i in range(self.calibration_runs):            t = timer()            for i in calibration_loops:                pass            t = timer() - t            prep_times.append(t)        min_prep_time = min(prep_times)        if _debug:            print            print 'Calib. prep time     = %.6fms' % (                min_prep_time * MILLI_SECONDS)         # Time the calibration runs (doing CALIBRATION_LOOPS loops of        # .calibrate() method calls each)        for i in range(self.calibration_runs):            t = timer()            for i in calibration_loops:                calibrate()            t = timer() - t            self.overhead_times.append(t / CALIBRATION_LOOPS                                       - min_prep_time)         # Check the measured times        min_overhead = min(self.overhead_times)        max_overhead = max(self.overhead_times)        if _debug:            print 'Calib. overhead time = %.6fms' % (                min_overhead * MILLI_SECONDS)        if min_overhead < 0.0:            raise ValueError('calibration setup did not work')        if max_overhead - min_overhead > 0.1:            raise ValueError(                'overhead calibration timing range too inaccurate: '                '%r - %r' % (min_overhead, max_overhead))     def run(self):         """ Run the test in two phases: first calibrate, then            do the actual test. Be careful to keep the calibration            timing low w/r to the test timing.         """        test = self.test        timer = self.get_timer()         # Get calibration        min_overhead = min(self.overhead_times)         # Test run        t = timer()        test()        t = timer() - t        if t < MIN_TEST_RUNTIME:            raise ValueError('warp factor too high: '                             'test times are < 10ms')        eff_time = t - min_overhead        if eff_time < 0:            raise ValueError('wrong calibration')        self.last_timing = (eff_time, t, min_overhead)        self.times.append(eff_time)     def calibrate(self):         """ Calibrate the test.             This method should execute everything that is needed to            setup and run the test - except for the actual operations            that you intend to measure. pybench uses this method to            measure the test implementation overhead.         """        return     def test(self):         """ Run the test.             The test needs to run self.rounds executing            self.operations number of operations each.         """        return     def stat(self):         """ Return test run statistics as tuple:             (minimum run time,             average run time,             total run time,             average time per operation,             minimum overhead time)         """        runs = len(self.times)        if runs == 0:            return 0.0, 0.0, 0.0, 0.0        min_time = min(self.times)        total_time = reduce(operator.add, self.times, 0.0)        avg_time = total_time / float(runs)        operation_avg = total_time / float(runs                                           * self.rounds                                           * self.operations)        if self.overhead_times:            min_overhead = min(self.overhead_times)        else:            min_overhead = self.last_timing[2]        return min_time, avg_time, total_time, operation_avg, min_overhead ### Load Setup # This has to be done after the definition of the Test class, since# the Setup module will import subclasses using this class. import Setup ### Benchmark base class class Benchmark:     # Name of the benchmark    name = ''     # Number of benchmark rounds to run    rounds = 1     # Warp factor use to run the tests    warp = 1                    # Warp factor     # Average benchmark round time    roundtime = 0     # Benchmark version number as float x.yy    version = 2.0     # Produce verbose output ?    verbose = 0     # Dictionary with the machine details    machine_details = None     # Timer used for the benchmark    timer = TIMER_PLATFORM_DEFAULT     def __init__(self, name, verbose=None, timer=None, warp=None,                 calibration_runs=None):         if name:            self.name = name        else:            self.name = '%04i-%02i-%02i %02i:%02i:%02i' % \                        (time.localtime(time.time())[:6])        if verbose is not None:            self.verbose = verbose        if timer is not None:            self.timer = timer        if warp is not None:            self.warp = warp        if calibration_runs is not None:            self.calibration_runs = calibration_runs         # Init vars        self.tests = {}        if _debug:            print 'Getting machine details...'        self.machine_details = get_machine_details()         # Make .version an instance attribute to have it saved in the        # Benchmark pickle        self.version = self.version     def get_timer(self):         """ Return the timer function to use for the test.         """        return get_timer(self.timer)     def compatible(self, other):         """ Return 1/0 depending on whether the benchmark is            compatible with the other Benchmark instance or not.         """        if self.version != other.version:            return 0        if (self.machine_details == other.machine_details and            self.timer != other.timer):            return 0        if (self.calibration_runs == 0 and            other.calibration_runs != 0):            return 0        if (self.calibration_runs != 0 and            other.calibration_runs == 0):            return 0        return 1     def load_tests(self, setupmod, limitnames=None):         # Add tests        if self.verbose:            print 'Searching for tests ...'            print '--------------------------------------'        for testclass in setupmod.__dict__.values():            if not hasattr(testclass, 'is_a_test'):                continue            name = testclass.__name__            if  name == 'Test':                continue            if (limitnames is not None and                limitnames.search(name) is None):                continue            self.tests[name] = testclass(                warp=self.warp,                calibration_runs=self.calibration_runs,                timer=self.timer)        l = self.tests.keys()        l.sort()        if self.verbose:            for name in l:                print '  %s' % name            print '--------------------------------------'            print '  %i tests found' % len(l)            print     def calibrate(self):

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