<?php
/* Some debug timer stuff that can be used */
function timer_start($name, $mintapms = 0, $minincrtap = 0)
{
	return [
		"prefix" => $name,
		"start" => gettimeofday(true),
		"mintapms" => max(0, (int)$mintapms),
		"minincrtapms" => max(0, (int)$minincrtap),
	];
}

function timer_get_elapsed_ms($t)
{
	return (gettimeofday(true) - $t['start']) * 1000;
}

function timer_get_incremental_ms($t)
{
	return (gettimeofday(true) - @$t['ptap'] ?: $t['start']) * 1000;
}

function timer_tag(&$t, $message = "step", $ret = NULL)
{
	$ms = timer_get_elapsed_ms($t);

	$log = $t['mintapms'] == 0 && $t['minincrtapms'] == 0;
	$log = $log || $t['mintapms'] && $ms >= $t['mintapms'];
	$log = $log || $t['minincrtapms'] && timer_get_incremental_ms($t) >= $t['minincrtapms'];

	if ($log)
		error_log(sprintf("%s: %s: %0.1fms%s", $t['prefix'], $message, $ms, isset($t['ptap']) ? sprintf(" (+%0.1fms)", $ms - $t['ptap']) : ""));
	$t['ptap'] = $ms;
	return $ret;
}
?>