Benchmark::meetConditions() - Code Metrics - Inspection of "wp 79" - alecrabbit/php-simple-profiler - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — develop ( b953bd...a0bdf0 )

by Alec

created 2019-03-11 15:57 UTC

Benchmark::meetConditions() A

↳ Parent: Benchmark

Complexity

Conditions	2
Paths	2

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	2
nc	2
nop	0
dl	0
loc	4
ccs	3
cts	3
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\Reports\Contracts\ReportableInterface;
use AlecRabbit\Tools\Reports\Traits\HasReport;
use AlecRabbit\Tools\Traits\BenchmarkFields;
use function AlecRabbit\typeOf;

class Benchmark implements BenchmarkInterface, ReportableInterface, Strings
{
    use BenchmarkFields, HasReport;

    public const MIN_ITERATIONS = 100;
    public const DEFAULT_STEPS = 100;

    /** @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 $generatorFunction;
    /** @var bool */
    protected $showReturns = true;
    /** @var bool */
    protected $launched = false;
    /** @var int */
    private $functionIndex = 1;

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

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

        $this->timer = new Timer();
        $this->initialize();
    }

    private 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
     */
    private function initialize(): void
    {
        unset($this->functions, $this->humanReadableName, $this->rewindable, $this->memoryUsageReport);

        $this->humanReadableName = null;
        $this->rewindable =
            new Rewindable(
                $this->generatorFunction,
                $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->showReturns);
        $this->functions[$function->enumeratedName()] = $function;
        $this->humanReadableName = null;
        $this->comment = null;
        $this->added->bump();
        $this->totalIterations += $this->iterations;
    }

    /**
     * @param callable $func
     * @param string $name
     * @return string
     */
    private function refineName($func, $name): string
    {
        if ($func instanceof \Closure) {
            $name = 'λ';
        }
        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 noReturns(): Benchmark
    {
        $this->showReturns = false;
        foreach ($this->functions as $function) {
            $function->setShowReturns($this->showReturns);
        }
        return $this;
    }

    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
     */
    private 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
     */
    private 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();
        }
    }

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

alecrabbit / php-simple-profiler

Push — develop ( b953bd...a0bdf0 )

Benchmark::meetConditions() A

Complexity

Size

Duplication

Code Coverage

Importance

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