Bench_ValidColor
extends Codebench
extends Kohana_Codebench
Constants
- None
Properties
Properties
-
public $description
-
Default value:
string(482) "Optimization for <code>Validate::color()</code>. See: http://forum.kohanaphp.com/comments.php?DiscussionID=2192. Note that the methods with an <em>_invalid</em> suffix contain flawed regexes and should be completely discarded. I left them in here for educational purposes, and to remind myself to think harder and test more thoroughly. It can't be that I only found out so late in the game. For the regex explanation have a look at the forum topic mentioned earlier." -
public array $grades
-
Grade letters with their maximum scores. Used to color the graphs.
-
Default value:
array(6) ( 125 => string(1) "A" 150 => string(1) "B" 200 => string(1) "C" 300 => string(1) "D" 500 => string(1) "E" "default" => string(1) "F" )
-
public $loops
-
Default value:
integer 10000
-
public $subjects
-
Default value:
array(10) ( 0 => string(3) "aaA" 1 => string(3) "123" 2 => string(6) "000000" 3 => string(7) "#123456" 4 => string(7) "#abcdef" 5 => string(3) "ggg" 6 => string(4) "1234" 7 => string(8) "#1234567" 8 => string(5) "#000 " 9 => string(13) "}§è!çà%$z" )
Methods
public bench_corey_regex_1_invalid() (defined in Bench_ValidColor)
Source Code
public function bench_corey_regex_1_invalid($subject)
{
return (bool) preg_match('/^#?([0-9a-f]{1,2}){3}$/iD', $subject);
}
public bench_corey_regex_2() (defined in Bench_ValidColor)
Source Code
public function bench_corey_regex_2($subject)
{
return (bool) preg_match('/^#?([0-9a-f]){3}(([0-9a-f]){3})?$/iD', $subject);
}
public bench_geert_regex_1a_invalid() (defined in Bench_ValidColor)
Source Code
public function bench_geert_regex_1a_invalid($subject)
{
return (bool) preg_match('/^#?(?:[0-9a-f]{1,2}+){3}$/iD', $subject);
}
public bench_geert_regex_1b_invalid() (defined in Bench_ValidColor)
Source Code
public function bench_geert_regex_1b_invalid($subject)
{
return (bool) preg_match('/^#?+(?:[0-9a-f]{1,2}+){3}$/iD', $subject);
}
public bench_geert_regex_2a() (defined in Bench_ValidColor)
Source Code
public function bench_geert_regex_2a($subject)
{
return (bool) preg_match('/^#?[0-9a-f]{3}(?:[0-9a-f]{3})?$/iD', $subject);
}
public bench_geert_regex_2b() (defined in Bench_ValidColor)
Source Code
public function bench_geert_regex_2b($subject)
{
return (bool) preg_match('/^#?+[0-9a-f]{3}(?:[0-9a-f]{3})?$/iD', $subject);
}
public bench_geert_str() (defined in Bench_ValidColor)
Source Code
public function bench_geert_str($subject)
{
if ($subject[0] === '#')
{
$subject = substr($subject, 1);
}
$strlen = strlen($subject);
return (($strlen === 3 OR $strlen === 6) AND ctype_xdigit($subject));
}
public bench_salathe_regex_1() (defined in Bench_ValidColor)
Source Code
public function bench_salathe_regex_1($subject)
{
return (bool) preg_match('/^#?+[0-9a-f]{3}(?:[0-9a-f]{3})?\z/i', $subject);
}
public bench_salathe_regex_2() (defined in Bench_ValidColor)
Source Code
public function bench_salathe_regex_2($subject)
{
return (bool) preg_match('/\A#?+[0-9a-f]{3}(?:[0-9a-f]{3})?\z/i', $subject);
}
public bench_salathe_str() (defined in Bench_ValidColor)
Source Code
public function bench_salathe_str($subject)
{
if ($subject[0] === '#')
{
$subject = substr($subject, 1);
}
// TRUE if:
// 1. $subject is 6 or 3 chars long
// 2. $subject contains only hexadecimal digits
return (((isset($subject[5]) AND ! isset($subject[6])) OR
(isset($subject[2]) AND ! isset($subject[3])))
AND ctype_xdigit($subject));
}
public __construct() (defined in Kohana_Codebench)
Constructor.
Return Values
- void
Source Code
public function __construct()
{
// Set the maximum execution time
set_time_limit(Kohana::$config->load('codebench')->max_execution_time);
}
public run() (defined in Kohana_Codebench)
Runs Codebench on the extending class.
Return Values
- array - Benchmark output
Source Code
public function run()
{
// Array of all methods to loop over
$methods = array_filter(get_class_methods($this), [$this, '_method_filter']);
// Make sure the benchmark runs at least once,
// also if no subject data has been provided.
if (empty($this->subjects))
{
$this->subjects = ['NULL' => NULL];
}
// Initialize benchmark output
$codebench = [
'class' => get_class($this),
'description' => $this->description,
'loops' => [
'base' => (int) $this->loops,
'total' => (int) $this->loops * count($this->subjects) * count($methods),
],
'subjects' => $this->subjects,
'benchmarks' => [],
];
// Benchmark each method
foreach ($methods as $method)
{
// Initialize benchmark output for this method
$codebench['benchmarks'][$method] = ['time' => 0, 'memory' => 0];
// Using Reflection because simply calling $this->$method($subject) in the loop below
// results in buggy benchmark times correlating to the length of the method name.
$reflection = new ReflectionMethod(get_class($this), $method);
// Benchmark each subject on each method
foreach ($this->subjects as $subject_key => $subject)
{
// Prerun each method/subject combo before the actual benchmark loop.
// This way relatively expensive initial processes won't be benchmarked, e.g. autoloading.
// At the same time we capture the return here so we don't have to do that in the loop anymore.
$return = $reflection->invoke($this, $subject);
// Start the timer for one subject
$token = Profiler::start('codebench', $method.$subject_key);
// The heavy work
for ($i = 0; $i < $this->loops; ++$i)
{
$reflection->invoke($this, $subject);
}
// Stop and read the timer
$benchmark = Profiler::total($token);
// Benchmark output specific to the current method and subject
$codebench['benchmarks'][$method]['subjects'][$subject_key] = [
'return' => $return,
'time' => $benchmark[0],
'memory' => $benchmark[1],
];
// Update method totals
$codebench['benchmarks'][$method]['time'] += $benchmark[0];
$codebench['benchmarks'][$method]['memory'] += $benchmark[1];
}
}
// Initialize the fastest and slowest benchmarks for both methods and subjects, time and memory,
// these values will be overwritten using min() and max() later on.
// The 999999999 values look like a hack, I know, but they work,
// unless your method runs for more than 31 years or consumes over 1GB of memory.
$fastest_method = $fastest_subject = ['time' => 999999999, 'memory' => 999999999];
$slowest_method = $slowest_subject = ['time' => 0, 'memory' => 0];
// Find the fastest and slowest benchmarks, needed for the percentage calculations
foreach ($methods as $method)
{
// Update the fastest and slowest method benchmarks
$fastest_method['time'] = min($fastest_method['time'], $codebench['benchmarks'][$method]['time']);
$fastest_method['memory'] = min($fastest_method['memory'], $codebench['benchmarks'][$method]['memory']);
$slowest_method['time'] = max($slowest_method['time'], $codebench['benchmarks'][$method]['time']);
$slowest_method['memory'] = max($slowest_method['memory'], $codebench['benchmarks'][$method]['memory']);
foreach ($this->subjects as $subject_key => $subject)
{
// Update the fastest and slowest subject benchmarks
$fastest_subject['time'] = min($fastest_subject['time'], $codebench['benchmarks'][$method]['subjects'][$subject_key]['time']);
$fastest_subject['memory'] = min($fastest_subject['memory'], $codebench['benchmarks'][$method]['subjects'][$subject_key]['memory']);
$slowest_subject['time'] = max($slowest_subject['time'], $codebench['benchmarks'][$method]['subjects'][$subject_key]['time']);
$slowest_subject['memory'] = max($slowest_subject['memory'], $codebench['benchmarks'][$method]['subjects'][$subject_key]['memory']);
}
}
// Percentage calculations for methods
foreach ($codebench['benchmarks'] as & $method)
{
// Calculate percentage difference relative to fastest and slowest methods
$method['percent']['fastest']['time'] = (empty($fastest_method['time'])) ? 0 : ($method['time'] / $fastest_method['time'] * 100);
$method['percent']['fastest']['memory'] = (empty($fastest_method['memory'])) ? 0 : ($method['memory'] / $fastest_method['memory'] * 100);
$method['percent']['slowest']['time'] = (empty($slowest_method['time'])) ? 0 : ($method['time'] / $slowest_method['time'] * 100);
$method['percent']['slowest']['memory'] = (empty($slowest_method['memory'])) ? 0 : ($method['memory'] / $slowest_method['memory'] * 100);
// Assign a grade for time and memory to each method
$method['grade']['time'] = $this->_grade($method['percent']['fastest']['time']);
$method['grade']['memory'] = $this->_grade($method['percent']['fastest']['memory']);
// Percentage calculations for subjects
foreach ($method['subjects'] as & $subject)
{
// Calculate percentage difference relative to fastest and slowest subjects for this method
$subject['percent']['fastest']['time'] = (empty($fastest_subject['time'])) ? 0 : ($subject['time'] / $fastest_subject['time'] * 100);
$subject['percent']['fastest']['memory'] = (empty($fastest_subject['memory'])) ? 0 : ($subject['memory'] / $fastest_subject['memory'] * 100);
$subject['percent']['slowest']['time'] = (empty($slowest_subject['time'])) ? 0 : ($subject['time'] / $slowest_subject['time'] * 100);
$subject['percent']['slowest']['memory'] = (empty($slowest_subject['memory'])) ? 0 : ($subject['memory'] / $slowest_subject['memory'] * 100);
// Assign a grade letter for time and memory to each subject
$subject['grade']['time'] = $this->_grade($subject['percent']['fastest']['time']);
$subject['grade']['memory'] = $this->_grade($subject['percent']['fastest']['memory']);
}
}
return $codebench;
}
protected _grade(integer|double $score ) (defined in Kohana_Codebench)
Returns the applicable grade letter for a score.
Parameters
- integer|double $score required - Score
Return Values
- string - Grade letter
Source Code
protected function _grade($score)
{
foreach ($this->grades as $max => $grade)
{
if ($max === 'default')
continue;
if ($score <= $max)
return $grade;
}
return $this->grades['default'];
}
protected _method_filter(string $method ) (defined in Kohana_Codebench)
Callback for array_filter(). Filters out all methods not to benchmark.
Parameters
- string $method required - Method name
Return Values
- boolean
Source Code
protected function _method_filter($method)
{
// Only benchmark methods with the "bench" prefix
return (substr($method, 0, 5) === 'bench');
}
