示例#1
0
 /**
  * @covers ::stop
  */
 public function testStop_Output_Profile1()
 {
     $this->expectOutputRegex("~^Time for profile 'profile1': [\\d.]+" . PHP_EOL . "\$~");
     $this->profiler->start("profile1");
     usleep(100);
     $this->profiler->stop("profile1", true);
 }
示例#2
0
文件: Profiler.php 项目: headzoo/core
 /**
  * Profiles one or more calls to a function
  * 
  * Calls a function the number of times specified by $num_runs, and displays the total run time,
  * the average run time, and the time for each run. Also returns an array with the same
  * information.
  * 
  * Regardless of the number of runs, the output only shows 40 run times: the first 20 and the
  * last 20. The returned array always contains the times for each run.
  * 
  * Note: Profiling must be enabled to use this method.
  * 
  * Examples:
  * ```php
  * // This example runs the closure 100 times, and displays the profile results.
  * $runs = Profiler::run(100, true, function() {
  *      ... do something here ...
  * });
  * 
  * // Output:
  * //
  * // Total Runs:                 100
  * // Total Time:      0.099596977234
  * // Average Time:    0.000981624126
  * // -------------------------------
  * // Run #1           0.000479936599
  * // Run #2           0.000968933105
  * // Run #3           0.000982999801
  * // Run #4           0.000988006591
  * // ......
  * // Run #97          0.000985145568
  * // Run #98          0.000983953476
  * // Run #99          0.000997066497
  * // Run #100         0.000993013382
  * 
  * print_r($runs);
  * // Output:
  * // [
  * //       "total"   => 0.099596977234,
  * //       "average" => 0.000981624126,
  * //       "runs"    => [
  * //           0.0004799365997,
  * //           0.0009689331055,
  * //           ....
  * //           0.0009930133820
  * //       ]
  * // ]
  * 
  * // Use false for the second argument to turn off displaying the results.
  * $runs = Profiler::run(100, false, function() {
  *      ... do something here ...
  * });
  * 
  * // The middle argument may be omitted, and defaults to true.
  * $runs = Profiler::run(100, function() {
  *      ... do something here ...
  * });
  * ```
  * 
  * @param  int      $num_runs  The number of times to run the function
  * @param  bool     $display    Whether or not to display the results
  * @param  callable $callable   The function to call
  *
  * @return array
  */
 public static function run($num_runs, $display = true, callable $callable = null)
 {
     self::swapCallable($display, $callable, true);
     $results = [];
     if (self::$enabled) {
         $profiler = new Profiler();
         $run_times = [];
         $memory = memory_get_usage();
         for ($i = 0; $i < $num_runs; $i++) {
             $profiler->start("loop");
             $callable();
             $run_times[] = $profiler->stop("loop", false);
         }
         $results["memory"] = memory_get_usage() - $memory;
         $results["total"] = array_sum($run_times);
         $results["average"] = $results["total"] / $num_runs;
         $results["runs"] = $run_times;
         if ($display) {
             $output = sprintf("Total Runs:   %17s%s", number_format($num_runs), PHP_EOL);
             $output .= sprintf("Total Time:   %17.12f%s", $results["total"], PHP_EOL);
             $output .= sprintf("Average Time: %17.12f%s", $results["average"], PHP_EOL);
             $output .= sprintf("Total Memory: %17s%s", Conversions::bytesToHuman($results["memory"]), PHP_EOL);
             $output .= sprintf('-------------------------------%s', PHP_EOL);
             if (count($run_times) > 50) {
                 $runs = [];
                 $runs[] = array_slice($run_times, 0, 20);
                 $runs[] = array_slice($run_times, -20, null, true);
             } else {
                 $runs[] = $run_times;
             }
             foreach ($runs as $run) {
                 foreach ($run as $index => $microtime) {
                     $output .= sprintf("Run #%-7d %18.12f%s", ++$index, $microtime, PHP_EOL);
                     if (20 == $index) {
                         $output .= "......." . PHP_EOL;
                     }
                 }
             }
             echo $output;
         }
     }
     return $results;
 }