Benchmark::refineName() - Code Metrics - Inspection of "fix 7.2" - alecrabbit/php-simple-profiler - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — develop ( d2e190...d276d7 )

by Alec

created 2019-03-11 12:01 UTC

Benchmark::refineName() A

↳ Parent: Benchmark

Complexity

Conditions	2
Paths	2

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes

Metric	Value
cc	2
eloc	3
nc	2
nop	2
dl	0
loc	6
ccs	0
cts	4
cp	0
crap	6
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 int */
    private $functionIndex = 1;
    /** @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;

    /**
     * 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();
    }

    /**
     * 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)();
        }
    }

    /**
     * @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
            );
    }
}


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

alecrabbit / php-simple-profiler

Push — develop ( d2e190...d276d7 )

Benchmark::refineName() A

Complexity

Size

Duplication

Code Coverage

Importance

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