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<?php |
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/** |
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* User: alec |
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* Date: 29.11.18 |
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* Time: 11:04 |
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*/ |
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namespace AlecRabbit\Tools; |
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use AlecRabbit\Profiler\Profiler; |
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use AlecRabbit\Profiler\Timer; |
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use AlecRabbit\Rewindable; |
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class Benchmark |
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{ |
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/** @var array */ |
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private $functions = []; |
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/** @var Rewindable */ |
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private $iterations; |
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/** @var Profiler */ |
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private $profiler; |
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/** @var int */ |
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private $namingIndex; |
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/** @var null|string */ |
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private $tmpName; |
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public function __construct(int $iterations = 1000) |
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{ |
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$this->iterations = |
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new Rewindable( |
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function (int $iterations): \Generator { |
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$i = 1; |
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while ($i <= $iterations) { |
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yield $i++; |
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} |
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}, |
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$iterations |
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); |
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$this->profiler = new Profiler(); |
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$this->namingIndex = 0; |
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} |
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public function compare(): void |
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{ |
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foreach ($this->functions as $name => $f) { |
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$this->profiler->timer($name)->start(); |
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foreach ($this->iterations as $iteration) { |
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[$function, $args] = $f; |
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/** @noinspection VariableFunctionsUsageInspection */ |
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\call_user_func($function, ...$args); |
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/** @noinspection DisconnectedForeachInstructionInspection */ |
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$this->profiler->timer($name)->check(); |
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} |
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} |
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} |
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/** |
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* @param callable $func |
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* @param mixed ...$args |
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*/ |
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public function addFunction($func, ...$args): void |
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{ |
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if (!\is_callable($func, false, $callable_name)) { |
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throw new \InvalidArgumentException('Function must be callable'); |
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} |
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if (null !== $this->tmpName) { |
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$callable_name = $this->tmpName; |
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$this->tmpName = null; |
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} |
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if (array_key_exists($callable_name, $this->functions)) { |
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$callable_name .= '_' . ++$this->namingIndex; |
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} |
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$this->functions[$callable_name] = [$func, $args]; |
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} |
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public function report(): array |
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{ |
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$timers = $this->profiler->getTimers(); |
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$averages = $this->computeAverages($timers); |
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$min = min($averages); |
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return |
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$this->computeRelatives($averages, $min); |
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} |
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/** |
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* @param array $timers |
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* @return array |
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*/ |
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private function computeAverages(array $timers): array |
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{ |
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$averages = []; |
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/** @var Timer $timer */ |
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foreach ($timers as $timer) { |
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$averages[$timer->getName()] = $timer->getAvgValue(); |
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} |
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return $averages; |
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} |
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/** |
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* @param array $averages |
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* @param float $min |
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* @return array |
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*/ |
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private function computeRelatives(array $averages, float $min): array |
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{ |
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$relatives = []; |
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foreach ($averages as $name => $average) { |
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$relatives[$name] = $average / $min; |
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} |
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asort($relatives); |
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foreach ($relatives as $name => $relative) { |
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$relatives[$name] = |
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$this->toPercentage($relative) . ' ' . |
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brackets(format_time($averages[$name]), BRACKETS_PARENTHESES); |
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} |
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return $relatives; |
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} |
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1 |
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private function toPercentage(float $relative): string |
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{ |
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return |
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number_format($relative * 100, 1) . '%'; |
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} |
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public function profilerReport( |
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bool $formatted = true, |
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bool $extended = true, |
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?int $units = null, |
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?int $precision = null |
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): iterable { |
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return |
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$this->profiler->report($formatted, $extended, $units, $precision); |
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} |
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public function withName(string $name): self |
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{ |
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$this->tmpName = $name; |
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return $this; |
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} |
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} |
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alecrabbit /
php-simple-profiler
