Benchmark::__construct() - Code Metrics - Inspection of "alpha" - alecrabbit/php-simple-profiler - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 0accbd...f9f913 )

by Alec

created 2019-03-15 16:57 UTC

Benchmark::__construct() A

↳ Parent: Benchmark

Complexity

Conditions	2
Paths	1

Size

Total Lines	13
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	7
nc	1
nop	1
dl	0
loc	13
ccs	8
cts	8
cp	1
crap	2
rs	10
c	0
b	0
f	0

<?php declare(strict_types=1);

namespace AlecRabbit\Tools;

use AlecRabbit\Accessories\MemoryUsage;
use AlecRabbit\Accessories\Rewindable;
use AlecRabbit\Tools\Contracts\BenchmarkInterface;
use AlecRabbit\Tools\Contracts\Strings;
use AlecRabbit\Tools\Internal\BenchmarkFunction;
use AlecRabbit\Tools\Reports\BenchmarkReport;
use AlecRabbit\Tools\Traits\BenchmarkFields;
use function AlecRabbit\typeOf;

class Benchmark extends Reportable implements BenchmarkInterface, Strings
{
    use BenchmarkFields;

    public const MIN_ITERATIONS = 100;
    public const DEFAULT_STEPS = 100;
    public const CLOSURE_NAME = 'λ';

    /** @var int */
    protected $advanceSteps = self::DEFAULT_STEPS;
    /** @var Rewindable */
    protected $rewindable;
    /** @var int */
    protected $iterations;
    /** @var null|string */
    protected $comment;
    /** @var string|null */
    protected $humanReadableName;
    /** @var int */
    protected $totalIterations = 0;
    /** @var null|callable */
    protected $onStart;
    /** @var null|callable */
    protected $onAdvance;
    /** @var null|callable */
    protected $onFinish;
    /** @var int */
    protected $advanceStep = 0;
    /** @var \Closure */
    protected $iterationNumberGenerator;
    /** @var bool */
    protected $launched = false;
    /** @var int */
    protected $functionIndex = 1;

    /**
     * Benchmark constructor.
     * @param int $iterations
     * @throws \Exception
     */
    public function __construct(?int $iterations = null)
    {
        $this->iterations = $this->refineIterations($iterations);

        $this->iterationNumberGenerator =
            function (int $iterations, int $i = 1): \Generator {
                while ($i <= $iterations) {
                    yield $i++;
                }
            };

        $this->timer = new Timer(); // Timer to count benchmark process total time
        $this->initialize();
    }

    protected function refineIterations(?int $iterations): int
    {
        $iterations = $iterations ?? self::MIN_ITERATIONS;
        $this->assertIterations($iterations);
        return $iterations;
    }

    /**
     * @param int $iterations
     */
    protected function assertIterations(int $iterations): void
    {
        if ($iterations < self::MIN_ITERATIONS) {
            throw new \RuntimeException(
                __CLASS__ .
                ': Number of Iterations should be greater then ' .
                self::MIN_ITERATIONS
            );
        }
    }

    /**
     * Resets Benchmark object clear
     * @throws \Exception
     */
    protected function initialize(): void
    {
        unset($this->functions, $this->humanReadableName, $this->rewindable, $this->memoryUsageReport);

        $this->humanReadableName = null;
        $this->rewindable =
            new Rewindable(
                $this->iterationNumberGenerator,
                $this->iterations
            );
        $this->functions = [];
        $this->added = new SimpleCounter('added');
        $this->benchmarked = new SimpleCounter('benchmarked');
        $this->memoryUsageReport = MemoryUsage::report();
        $this->doneIterations = 0;
        $this->totalIterations = 0;
        $this->report = (new BenchmarkReport())->buildOn($this);
    }

    /**
     * Resets Benchmark object clear
     * @throws \Exception
     */
    public function reset(): void
    {
        $this->initialize();
    }

    /**
     * @param callable|null $onStart
     * @param callable|null $onAdvance
     * @param callable|null $onFinish
     * @return Benchmark
     */
    public function showProgressBy(
        callable $onStart = null,
        callable $onAdvance = null,
        callable $onFinish = null
    ): Benchmark {
        $this->onStart = $onStart;
        $this->onAdvance = $onAdvance;
        $this->onFinish = $onFinish;
        return $this;
    }

    /**
     * @param mixed $func
     * @param mixed ...$args
     */
    public function addFunction($func, ...$args): void
    {
        if (!\is_callable($func, false, $name)) {
            throw new \InvalidArgumentException(
                sprintf(
                    '\'%s\' is NOT callable. Function must be callable. Type of "%s" provided instead.',
                    $name,
                    typeOf($func)
                )
            );
        }
        $function =
            new BenchmarkFunction(
                $func,
                $this->refineName($func, $name),
                $this->functionIndex++,
                $args,
                $this->comment,
                $this->humanReadableName
            );
        $function->setShowReturns($this->isShowReturns());
        $this->functions[$function->enumeratedName()] = $function;
        $this->humanReadableName = null;
        $this->comment = null;
        $this->added->bump();
        $this->totalIterations += $this->iterations;
    }

    /**
     * @param callable $func
     * @param string $name
     * @return string
     */
    protected function refineName($func, $name): string
    {
        if ($func instanceof \Closure) {
            $name = self::CLOSURE_NAME;
        }
        return $name;
    }

    /**
     * @param string $comment
     * @return Benchmark
     */
    public function withComment(string $comment): self
    {
        $this->comment = $comment;
        return $this;
    }

    /**
     * @param string $name
     * @return Benchmark
     */
    public function useName(string $name): self
    {
        $this->humanReadableName = $name;
        return $this;
    }

    /**
     * @return string
     * @throws \Exception
     */
    public function stat(): string
    {
        return
            sprintf(
                'Done in: %s%s%s',
                $this->getTimer()->elapsed(),
                PHP_EOL,
                (string)$this->memoryUsageReport
            );
    }

    /**
     * @return Benchmark
     */
    public function showReturns(): Benchmark
    {
        $this->setShowReturns(true);
        foreach ($this->functions as $function) {
            $function->setShowReturns($this->isShowReturns());
        }
        return $this;
    }

    /**
     * @param bool $showReturns
     */
    public function setShowReturns(bool $showReturns): void
    {
        $this->showReturns = $showReturns;
    }

    /** {@inheritdoc} */
    protected function meetConditions(): void
    {
        if ($this->isNotLaunched()) {
            $this->run();
        }
    }

    /**
     * @return bool
     */
    public function isNotLaunched(): bool
    {
        return !$this->isLaunched();
    }

    /**
     * @return bool
     */
    public function isLaunched(): bool
    {
        return $this->launched;
    }

    /**
     * Launch benchmarking
     */
    public function run(): self
    {
        $this->launched = true;
        if ($this->onStart) {
            ($this->onStart)();
        }
        $this->execute();
        if ($this->onFinish) {
            ($this->onFinish)();
        }
        $this->doneIterationsCombined += $this->doneIterations;
        return $this;
    }

    /**
     * Benchmarking
     */
    protected function execute(): void
    {
        /** @var  BenchmarkFunction $f */
        foreach ($this->functions as $f) {
            if (!$f->execute()) {
                $this->totalIterations -= $this->iterations;
                continue;
            }
            $this->advanceStep = (int)($this->totalIterations / $this->advanceSteps);
            $this->bench($f);
            $this->benchmarked->bump();
        }
    }

    /**
     * @param BenchmarkFunction $f
     */
    protected function bench(BenchmarkFunction $f): void
    {
        $timer = $f->getTimer();
        $function = $f->getCallable();
        $args = $f->getArgs();
        foreach ($this->rewindable as $iteration) {
            $start = microtime(true);
            /** @noinspection DisconnectedForeachInstructionInspection */
            $function(...$args);
            $stop = microtime(true);
            $timer->bounds($start, $stop, $iteration);
            /** @noinspection DisconnectedForeachInstructionInspection */
            $this->progress();
        }
    }

    protected function progress(): void
    {
        $this->doneIterations++;
        if ($this->onAdvance && 0 === $this->doneIterations % $this->advanceStep) {
            ($this->onAdvance)();
        }
    }
}


1		<?php declare(strict_types=1);
2
3		namespace AlecRabbit\Tools;
4
5		use AlecRabbit\Accessories\MemoryUsage;
6		use AlecRabbit\Accessories\Rewindable;
7		use AlecRabbit\Tools\Contracts\BenchmarkInterface;
8		use AlecRabbit\Tools\Contracts\Strings;
9		use AlecRabbit\Tools\Internal\BenchmarkFunction;
10		use AlecRabbit\Tools\Reports\BenchmarkReport;
11		use AlecRabbit\Tools\Traits\BenchmarkFields;
12		use function AlecRabbit\typeOf;
13
14		class Benchmark extends Reportable implements BenchmarkInterface, Strings
15		{
16		use BenchmarkFields;
17
18		public const MIN_ITERATIONS = 100;
19		public const DEFAULT_STEPS = 100;
20		public const CLOSURE_NAME = 'λ';
21
22		/** @var int */
23		protected $advanceSteps = self::DEFAULT_STEPS;
24		/** @var Rewindable */
25		protected $rewindable;
26		/** @var int */
27		protected $iterations;
28		/** @var null\|string */
29		protected $comment;
30		/** @var string\|null */
31		protected $humanReadableName;
32		/** @var int */
33		protected $totalIterations = 0;
34		/** @var null\|callable */
35		protected $onStart;
36		/** @var null\|callable */
37		protected $onAdvance;
38		/** @var null\|callable */
39		protected $onFinish;
40		/** @var int */
41		protected $advanceStep = 0;
42		/** @var \Closure */
43		protected $iterationNumberGenerator;
44		/** @var bool */
45		protected $launched = false;
46		/** @var int */
47		protected $functionIndex = 1;
48
49		/**
50		* Benchmark constructor.
51		* @param int $iterations
52		* @throws \Exception
53		*/
54	18	public function __construct(?int $iterations = null)
55		{
56	18	$this->iterations = $this->refineIterations($iterations);
57
58	18	$this->iterationNumberGenerator =
59		function (int $iterations, int $i = 1): \Generator {
60	14	while ($i <= $iterations) {
61	14	yield $i++;
62		}
63	14	};
64
65	18	$this->timer = new Timer(); // Timer to count benchmark process total time
66	18	$this->initialize();
67	18	}
68
69	18	protected function refineIterations(?int $iterations): int
70		{
71	18	$iterations = $iterations ?? self::MIN_ITERATIONS;
72	18	$this->assertIterations($iterations);
73	18	return $iterations;
74		}
75
76		/**
77		* @param int $iterations
78		*/
79	18	protected function assertIterations(int $iterations): void
80		{
81	18	if ($iterations < self::MIN_ITERATIONS) {
82	1	throw new \RuntimeException(
83		__CLASS__ .
84		': Number of Iterations should be greater then ' .
85	1	self::MIN_ITERATIONS
86		);
87		}
88	18	}
89
90		/**
91		* Resets Benchmark object clear
92		* @throws \Exception
93		*/
94	18	protected function initialize(): void
95		{
96	18	unset($this->functions, $this->humanReadableName, $this->rewindable, $this->memoryUsageReport);
97
98	18	$this->humanReadableName = null;
99	18	$this->rewindable =
100	18	new Rewindable(
101	18	$this->iterationNumberGenerator,
102	18	$this->iterations
103		);
104	18	$this->functions = [];
105	18	$this->added = new SimpleCounter('added');
106	18	$this->benchmarked = new SimpleCounter('benchmarked');
107	18	$this->memoryUsageReport = MemoryUsage::report();
108	18	$this->doneIterations = 0;
109	18	$this->totalIterations = 0;
110	18	$this->report = (new BenchmarkReport())->buildOn($this);
111	18	}
112
113		/**
114		* Resets Benchmark object clear
115		* @throws \Exception
116		*/
117	1	public function reset(): void
118		{
119	1	$this->initialize();
120	1	}
121
122		/**
123		* @param callable\|null $onStart
124		* @param callable\|null $onAdvance
125		* @param callable\|null $onFinish
126		* @return Benchmark
127		*/
128	2	public function showProgressBy(
129		callable $onStart = null,
130		callable $onAdvance = null,
131		callable $onFinish = null
132		): Benchmark {
133	2	$this->onStart = $onStart;
134	2	$this->onAdvance = $onAdvance;
135	2	$this->onFinish = $onFinish;
136	2	return $this;
137		}
138
139		/**
140		* @param mixed $func
141		* @param mixed ...$args
142		*/
143	15	public function addFunction($func, ...$args): void
144		{
145	15	if (!\is_callable($func, false, $name)) {
146	1	throw new \InvalidArgumentException(
147	1	sprintf(
148	1	'\'%s\' is NOT callable. Function must be callable. Type of "%s" provided instead.',
149		$name,
150	1	typeOf($func)
151		)
152		);
153		}
154		$function =
155	14	new BenchmarkFunction(
156	14	$func,
157	14	$this->refineName($func, $name),
158	14	$this->functionIndex++,
159		$args,
160	14	$this->comment,
161	14	$this->humanReadableName
162		);
163	14	$function->setShowReturns($this->isShowReturns());
164	14	$this->functions[$function->enumeratedName()] = $function;
165	14	$this->humanReadableName = null;
166	14	$this->comment = null;
167	14	$this->added->bump();
168	14	$this->totalIterations += $this->iterations;
169	14	}
170
171		/**
172		* @param callable $func
173		* @param string $name
174		* @return string
175		*/
176	14	protected function refineName($func, $name): string
177		{
178	14	if ($func instanceof \Closure) {
179	14	$name = self::CLOSURE_NAME;
180		}
181	14	return $name;
182		}
183
184		/**
185		* @param string $comment
186		* @return Benchmark
187		*/
188	6	public function withComment(string $comment): self
189		{
190	6	$this->comment = $comment;
191	6	return $this;
192		}
193
194		/**
195		* @param string $name
196		* @return Benchmark
197		*/
198	5	public function useName(string $name): self
199		{
200	5	$this->humanReadableName = $name;
201	5	return $this;
202		}
203
204		/**
205		* @return string
206		* @throws \Exception
207		*/
208	5	public function stat(): string
209		{
210		return
211	5	sprintf(
212	5	'Done in: %s%s%s',
213	5	$this->getTimer()->elapsed(),
214	5	PHP_EOL,
215	5	(string)$this->memoryUsageReport
216		);
217		}
218
219		/**
220		* @return Benchmark
221		*/
222	1	public function showReturns(): Benchmark
223		{
224	1	$this->setShowReturns(true);
225	1	foreach ($this->functions as $function) {
226	1	$function->setShowReturns($this->isShowReturns());
227		}
228	1	return $this;
229		}
230
231		/**
232		* @param bool $showReturns
233		*/
234	1	public function setShowReturns(bool $showReturns): void
235		{
236	1	$this->showReturns = $showReturns;
237	1	}
238
239		/** {@inheritdoc} */
240	15	protected function meetConditions(): void
241		{
242	15	if ($this->isNotLaunched()) {
243	12	$this->run();
244		}
245	15	}
246
247		/**
248		* @return bool
249		*/
250	15	public function isNotLaunched(): bool
251		{
252	15	return !$this->isLaunched();
253		}
254
255		/**
256		* @return bool
257		*/
258	15	public function isLaunched(): bool
259		{
260	15	return $this->launched;
261		}
262
263		/**
264		* Launch benchmarking
265		*/
266	15	public function run(): self
267		{
268	15	$this->launched = true;
269	15	if ($this->onStart) {
270	2	($this->onStart)();
271		}
272	15	$this->execute();
273	15	if ($this->onFinish) {
274	2	($this->onFinish)();
275		}
276	15	$this->doneIterationsCombined += $this->doneIterations;
277	15	return $this;
278		}
279
280		/**
281		* Benchmarking
282		*/
283	15	protected function execute(): void
284		{
285		/** @var BenchmarkFunction $f */
286	15	foreach ($this->functions as $f) {
287	14	if (!$f->execute()) {
288	6	$this->totalIterations -= $this->iterations;
289	6	continue;
290		}
291	14	$this->advanceStep = (int)($this->totalIterations / $this->advanceSteps);
292	14	$this->bench($f);
293	14	$this->benchmarked->bump();
294		}
295	15	}
296
297		/**
298		* @param BenchmarkFunction $f
299		*/
300	14	protected function bench(BenchmarkFunction $f): void
301		{
302	14	$timer = $f->getTimer();
303	14	$function = $f->getCallable();
304	14	$args = $f->getArgs();
305	14	foreach ($this->rewindable as $iteration) {
306	14	$start = microtime(true);
307		/** @noinspection DisconnectedForeachInstructionInspection */
308	14	$function(...$args);
309	14	$stop = microtime(true);
310	14	$timer->bounds($start, $stop, $iteration);
311		/** @noinspection DisconnectedForeachInstructionInspection */
312	14	$this->progress();
313		}
314	14	}
315
316	14	protected function progress(): void
317		{
318	14	$this->doneIterations++;
319	14	if ($this->onAdvance && 0 === $this->doneIterations % $this->advanceStep) {
320	2	($this->onAdvance)();
321		}
322	14	}
323		}
324

alecrabbit / php-simple-profiler

Push — master ( 0accbd...f9f913 )

Benchmark::__construct() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

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