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76 lines
1.8 KiB
Haxe
76 lines
1.8 KiB
Haxe
package funkin.util.logging;
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/**
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* A small utility class for timing how long functions take.
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* Specify a string as a label (or don't, by default it uses the name of the function it was called from.)
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*
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* Example:
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* ```haxe
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*
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* var perf = new Perf();
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* ...
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* perf.print();
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* ```
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*/
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class Perf
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{
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final startTime:Float;
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final label:Null<String>;
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final posInfos:Null<haxe.PosInfos>;
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/**
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* Create a new performance marker.
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* @param label Optionally specify a label to use for the performance marker. Defaults to the function name.
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* @param posInfos The position of the calling function. Used to build the default label.
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* Note: `haxe.PosInfos` is magic and automatically populated by the compiler!
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*/
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public function new(?label:String, ?posInfos:haxe.PosInfos)
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{
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this.label = label;
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this.posInfos = posInfos;
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startTime = current();
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}
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/**
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* The current timestamp, in fractional seconds.
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* @return The current timestamp.
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*/
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static function current():Float
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{
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#if sys
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// This one is more accurate if it's available.
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return Sys.time();
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#else
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return haxe.Timer.stamp();
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#end
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}
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/**
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* The duration in seconds since this `Perf` was created.
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* @return The duration in seconds
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*/
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public function duration():Float
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{
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return current() - startTime;
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}
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/**
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* A rounded millisecond duration
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* @return The duration in milliseconds
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*/
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public function durationClean():Float
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{
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var round:Float = 100;
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return Math.floor(duration() * Constants.MS_PER_SEC * round) / round;
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}
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/**
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* Cleanly prints the duration since this `Perf` was created.
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*/
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public function print():Void
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{
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var label:String = label ?? (posInfos == null ? 'unknown' : '${posInfos.className}#${posInfos.methodName}()');
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trace('[PERF] [$label] Took ${durationClean()}ms.');
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}
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}
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