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Update core Debug class to use PHP 7.3 hrtime() function for timers (rather than microtime), when available. Also add support for configuring timer precision via Debug::timerSetting('precision', $n) where $n is number of decimals. Default is 4.

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This commit is contained in:
Ryan Cramer
2020-04-17 08:21:23 -04:00
parent 89dbf0f96c
commit dde4c92b78
1 changed files with 59 additions and 6 deletions
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61
wire/core/Debug.php
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@@ -10,7 +10,7 @@
* This file is licensed under the MIT license
* https://processwire.com/about/license/mit/
*
* ProcessWire 3.x, Copyright 2016 by Ryan Cramer
* ProcessWire 3.x, Copyright 2020 by Ryan Cramer
* https://processwire.com
*
*/
@@ -41,6 +41,25 @@ class Debug {
*/
static protected $savedTimerNotes = array();
/**
* Use hrtime()?
*
* @var null|bool
*
*/
static protected $useHrtime = null;
/**
* Timer precision (digits after decimal)
*
* @var int
*
*/
static protected $timerSettings = array(
'precision' => 4,
'useHrtime' => null,
);
/**
* Measure time between two events
*
@@ -58,26 +77,60 @@ class Debug {
*
*/
static public function timer($key = '', $reset = false) {
if(self::$timerSettings['useHrtime'] === null) {
self::$timerSettings['useHrtime'] = function_exists("\\hrtime");
}
// returns number of seconds elapsed since first call
if($reset && $key) self::removeTimer($key);
if(!$key || !isset(self::$timers[$key])) {
// start new timer
$startTime = -microtime(true);
$startTime = self::$timerSettings['useHrtime'] ? hrtime(true) : -microtime(true);
if(!$key) {
$key = (string) $startTime;
while(isset(self::$timers[$key])) $key .= "0";
}
self::$timers[(string) $key] = $startTime;
$value = $key;
} else {
// return existing timer
$value = number_format(self::$timers[$key] + microtime(true), 4);
// finish a timer
if(self::$timerSettings['useHrtime']) {
// return existing hrtime timer
$value = ((hrtime(true) - self::$timers[$key]) / 1e+6) / 1000;
} else {
// return existing microtime timer
$value = self::$timers[$key] + microtime(true);
}
if(self::$timerSettings['precision']) {
$value = number_format($value, self::$timerSettings['precision']);
}
}
return $value;
}
/**
* Get or set timer setting
*
* ~~~~~~
* // Example of changing precision to 2
* Debug::timerSetting('precision', 2);
* ~~~~~~
*
* @param string $key
* @param mixed|null $value
* @return mixed
* @since 3.0.154
*
*/
static public function timerSetting($key, $value = null) {
if($value !== null) self::$timerSettings[$key] = $value;
return self::$timerSettings[$key];
}
/**
* Save the current time of the given timer which can be later retrieved with getSavedTimer($key)
*