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Viewing changes to benchmark/bench.php

  • Committer: Michael Ruoss
  • Date: 2015-03-18 14:12:19 UTC
  • Revision ID: git-v1:c591bdc61de714458440ff13454bc51d94ab5f3d
new build info structure

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benchmark/bench.php
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<?php
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class Bench {
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        private $name;
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        private $headerWritten = false;
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        private $started = false;
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        private $startTime;
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        private $stopTime;
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        private $startUsage;
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        private $stopUsage;
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        private $iterations;
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        public function __construct($name) {
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                $this->name = $name;
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        }
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        private function getResourceUsage() {
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                $rusage = getrusage();
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                $time = $rusage['ru_utime.tv_sec'] * 1000000 + $rusage['ru_utime.tv_usec'];
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                $time += $rusage['ru_stime.tv_sec'] * 1000000 + $rusage['ru_stime.tv_usec'];
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                return $time;
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        }
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        public function start() {
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                if ($this->started) {
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                        throw new RuntimeException("Already started.");
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                }
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                $this->startTime = microtime(true);
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                $this->stopTime = $this->startTime;
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                $rusage = getrusage();
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                $this->startUsage = $this->getResourceUsage();
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                $this->stopUsage = $this->startUsage;
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                $this->started = true;
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        }
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        public function stop($i = 1) {
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                if (!$this->started) {
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                        throw new RuntimeException("Not started.");
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                }
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                $this->stopTime = microtime(true);
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                $this->stopUsage = $this->getResourceUsage();
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                $this->iterations = (int)$i;
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                $this->started = false;
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        }
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        public function writeHeader() {
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                $header = implode("\t", array(
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                        'name', 'start time', 'iterations', 'duration', 'rusage',
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                ));
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                echo $header, "\n";
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                $this->headerWritten = true;
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        }
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        public function write() {
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                if ($this->started) {
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                        $this->stop();
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                }
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                if (!$this->headerWritten) {
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                        $this->writeHeader();
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                }
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                printf("%s\t%.6f\t%d\t%.8f\t%.6f\n",
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                        $this->name,
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                        $this->startTime,
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                        $this->iterations,
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                        $this->stopTime - $this->startTime,
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                        $this->stopUsage - $this->startUsage);
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        }
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}
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