Benchmark::execute() - Code Metrics - Inspection of "wp 115" - alecrabbit/php-simple-profiler - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — develop ( eb616e...328010 )

by Alec

created 2019-03-18 14:34 UTC

Benchmark::execute() A

↳ Parent: Benchmark

Complexity

Conditions	3
Paths	3

Size

Total Lines	11
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	3

Importance

Changes

Metric	Value
cc	3
eloc	7
nc	3
nop	0
dl	0
loc	11
ccs	8
cts	8
cp	1
crap	3
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
     * @throws \Exception
     */
    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 = $timer->current();
            /** @noinspection DisconnectedForeachInstructionInspection */
            $function(...$args);
            $stop = $timer->current();
            $timer->bounds($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	19	public function __construct(?int $iterations = null)
55		{
56	19	$this->iterations = $this->refineIterations($iterations);
57
58	19	$this->iterationNumberGenerator =
59		function (int $iterations, int $i = 1): \Generator {
60	15	while ($i <= $iterations) {
61	15	yield $i++;
62		}
63	15	};
64
65	19	$this->timer = new Timer(); // Timer to count benchmark process total time
66	19	$this->initialize();
67	19	}
68
69	19	protected function refineIterations(?int $iterations): int
70		{
71	19	$iterations = $iterations ?? self::MIN_ITERATIONS;
72	19	$this->assertIterations($iterations);
73	19	return $iterations;
74		}
75
76		/**
77		* @param int $iterations
78		*/
79	19	protected function assertIterations(int $iterations): void
80		{
81	19	if ($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	19	}
89
90		/**
91		* Resets Benchmark object clear
92		* @throws \Exception
93		*/
94	19	protected function initialize(): void
95		{
96	19	unset($this->functions, $this->humanReadableName, $this->rewindable, $this->memoryUsageReport);
97
98	19	$this->humanReadableName = null;
99	19	$this->rewindable =
100	19	new Rewindable(
101	19	$this->iterationNumberGenerator,
102	19	$this->iterations
103		);
104	19	$this->functions = [];
105	19	$this->added = new SimpleCounter('added');
106	19	$this->benchmarked = new SimpleCounter('benchmarked');
107	19	$this->memoryUsageReport = MemoryUsage::report();
108	19	$this->doneIterations = 0;
109	19	$this->totalIterations = 0;
110	19	$this->report = (new BenchmarkReport())->buildOn($this);
111	19	}
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	4	public function showProgressBy(
129		callable $onStart = null,
130		callable $onAdvance = null,
131		callable $onFinish = null
132		): Benchmark {
133	4	$this->onStart = $onStart;
134	4	$this->onAdvance = $onAdvance;
135	4	$this->onFinish = $onFinish;
136	4	return $this;
137		}
138
139		/**
140		* @param mixed $func
141		* @param mixed ...$args
142		* @throws \Exception
143		*/
144	16	public function addFunction($func, ...$args): void
145		{
146	16	if (!\is_callable($func, false, $name)) {
147	1	throw new \InvalidArgumentException(
148	1	sprintf(
149	1	'\'%s\' is NOT callable. Function must be callable. Type of "%s" provided instead.',
150		$name,
151	1	typeOf($func)
152		)
153		);
154		}
155		$function =
156	15	new BenchmarkFunction(
157	15	$func,
158	15	$this->refineName($func, $name),
159	15	$this->functionIndex++,
160		$args,
161	15	$this->comment,
162	15	$this->humanReadableName
163		);
164	15	$function->setShowReturns($this->isShowReturns());
165	15	$this->functions[$function->enumeratedName()] = $function;
166	15	$this->humanReadableName = null;
167	15	$this->comment = null;
168	15	$this->added->bump();
169	15	$this->totalIterations += $this->iterations;
170	15	}
171
172		/**
173		* @param callable $func
174		* @param string $name
175		* @return string
176		*/
177	15	protected function refineName($func, $name): string
178		{
179	15	if ($func instanceof \Closure) {
180	15	$name = self::CLOSURE_NAME;
181		}
182	15	return $name;
183		}
184
185		/**
186		* @param string $comment
187		* @return Benchmark
188		*/
189	5	public function withComment(string $comment): self
190		{
191	5	$this->comment = $comment;
192	5	return $this;
193		}
194
195		/**
196		* @param string $name
197		* @return Benchmark
198		*/
199	6	public function useName(string $name): self
200		{
201	6	$this->humanReadableName = $name;
202	6	return $this;
203		}
204
205		/**
206		* @return string
207		* @throws \Exception
208		*/
209	3	public function stat(): string
210		{
211		return
212	3	sprintf(
213	3	'Done in: %s%s%s',
214	3	$this->getTimer()->elapsed(),
215	3	PHP_EOL,
216	3	(string)$this->memoryUsageReport
217		);
218		}
219
220		/**
221		* @return Benchmark
222		*/
223	1	public function showReturns(): Benchmark
224		{
225	1	$this->setShowReturns(true);
226	1	foreach ($this->functions as $function) {
227	1	$function->setShowReturns($this->isShowReturns());
228		}
229	1	return $this;
230		}
231
232		/**
233		* @param bool $showReturns
234		*/
235	1	public function setShowReturns(bool $showReturns): void
236		{
237	1	$this->showReturns = $showReturns;
238	1	}
239
240		/** {@inheritdoc} */
241	14	protected function meetConditions(): void
242		{
243	14	if ($this->isNotLaunched()) {
244	10	$this->run();
245		}
246	14	}
247
248		/**
249		* @return bool
250		*/
251	14	public function isNotLaunched(): bool
252		{
253	14	return !$this->isLaunched();
254		}
255
256		/**
257		* @return bool
258		*/
259	14	public function isLaunched(): bool
260		{
261	14	return $this->launched;
262		}
263
264		/**
265		* Launch benchmarking
266		*/
267	16	public function run(): self
268		{
269	16	$this->launched = true;
270	16	if ($this->onStart) {
271	3	($this->onStart)();
272		}
273	16	$this->execute();
274	16	if ($this->onFinish) {
275	4	($this->onFinish)();
276		}
277	16	$this->doneIterationsCombined += $this->doneIterations;
278	16	return $this;
279		}
280
281		/**
282		* Benchmarking
283		*/
284	16	protected function execute(): void
285		{
286		/** @var BenchmarkFunction $f */
287	16	foreach ($this->functions as $f) {
288	15	if (!$f->execute()) {
289	6	$this->totalIterations -= $this->iterations;
290	6	continue;
291		}
292	15	$this->advanceStep = (int)($this->totalIterations / $this->advanceSteps);
293	15	$this->bench($f);
294	15	$this->benchmarked->bump();
295		}
296	16	}
297
298		/**
299		* @param BenchmarkFunction $f
300		*/
301	15	protected function bench(BenchmarkFunction $f): void
302		{
303	15	$timer = $f->getTimer();
304	15	$function = $f->getCallable();
305	15	$args = $f->getArgs();
306	15	foreach ($this->rewindable as $iteration) {
307	15	$start = $timer->current();
308		/** @noinspection DisconnectedForeachInstructionInspection */
309	15	$function(...$args);
310	15	$stop = $timer->current();
311	15	$timer->bounds($start, $stop, $iteration);
312		/** @noinspection DisconnectedForeachInstructionInspection */
313	15	$this->progress();
314		}
315	15	}
316
317	15	protected function progress(): void
318		{
319	15	$this->doneIterations++;
320	15	if ($this->onAdvance && 0 === $this->doneIterations % $this->advanceStep) {
321	4	($this->onAdvance)();
322		}
323	15	}
324		}
325

alecrabbit / php-simple-profiler

Push — develop ( eb616e...328010 )

Benchmark::execute() A

Complexity

Size

Duplication

Code Coverage

Importance

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