Skip to content
Fetching contributors…
Cannot retrieve contributors at this time
237 lines (207 sloc) 7.66 KB
<?php
/********************************************************************************\
* Copyright (C) Carl Taylor (cjtaylor@adepteo.com) *
* Copyright (C) Torben Nehmer (torben@nehmer.net) for Code Cleanup *
* Licensed under the BSD license upon request *
\********************************************************************************/
/// Enable multiple timers to aid profiling of performance over sections of code
/**
* Execution time profiler.
*
* @package framework
* @subpackage misc
*/
class Profiler {
var $description;
var $startTime;
var $endTime;
var $initTime;
var $cur_timer;
var $stack;
var $trail;
var $trace;
var $count;
var $running;
protected static $inst;
/**
* Initialise the timer. with the current micro time
*/
public function Profiler( $output_enabled=false, $trace_enabled=false)
{
$this->description = array();
$this->startTime = array();
$this->endTime = array();
$this->initTime = 0;
$this->cur_timer = "";
$this->stack = array();
$this->trail = "";
$this->trace = "";
$this->count = array();
$this->running = array();
$this->initTime = $this->getMicroTime();
$this->output_enabled = $output_enabled;
$this->trace_enabled = $trace_enabled;
$this->startTimer('unprofiled');
}
// Public Methods
public static function init() {
if(!self::$inst) self::$inst = new Profiler(true,true);
}
public static function mark($name, $level2 = "", $desc = "") {
if($level2 && $_GET['debug_profile'] > 1) $name .= " $level2";
if(!self::$inst) self::$inst = new Profiler(true,true);
self::$inst->startTimer($name, $desc);
}
public static function unmark($name, $level2 = "", $desc = "") {
if($level2 && $_GET['debug_profile'] > 1) $name .= " $level2";
if(!self::$inst) self::$inst = new Profiler(true,true);
self::$inst->stopTimer($name, $desc);
}
public static function show($showTrace = false) {
if(!self::$inst) self::$inst = new Profiler(true,true);
echo "<div style=\"position: absolute; z-index: 100000; top: 20px; left: 20px; background-color: white;"
. " padding: 20px; border: 1px #AAA solid; height: 80%; overflow: auto;\">";
echo "<p><a href=\"#\" onclick=\"this.parentNode.parentNode.style.display = 'none'; return false;\">"
. "(Click to close)</a></p>";
self::$inst->printTimers();
if($showTrace) self::$inst->printTrace();
echo "</div>";
}
/**
* Start an individual timer
* This will pause the running timer and place it on a stack.
* @param string $name name of the timer
* @param string optional $desc description of the timer
*/
public function startTimer($name, $desc="" ){
$this->trace.="start $name\n";
$n=array_push( $this->stack, $this->cur_timer );
$this->__suspendTimer( $this->stack[$n-1] );
$this->startTime[$name] = $this->getMicroTime();
$this->cur_timer=$name;
$this->description[$name] = $desc;
if (!array_key_exists($name,$this->count))
$this->count[$name] = 1;
else
$this->count[$name]++;
}
/**
* Stop an individual timer
* Restart the timer that was running before this one
* @param string $name name of the timer
*/
public function stopTimer($name){
$this->trace.="stop $name\n";
$this->endTime[$name] = $this->getMicroTime();
if (!array_key_exists($name, $this->running))
$this->running[$name] = $this->elapsedTime($name);
else
$this->running[$name] += $this->elapsedTime($name);
$this->cur_timer=array_pop($this->stack);
$this->__resumeTimer($this->cur_timer);
}
/**
* measure the elapsed time of a timer without stoping the timer if
* it is still running
*/
public function elapsedTime($name){
// This shouldn't happen, but it does once.
if (!array_key_exists($name,$this->startTime))
return 0;
if(array_key_exists($name,$this->endTime)){
return ($this->endTime[$name] - $this->startTime[$name]);
} else {
$now=$this->getMicroTime();
return ($now - $this->startTime[$name]);
}
}//end start_time
/**
* Measure the elapsed time since the profile class was initialised
*
*/
public function elapsedOverall(){
$oaTime = $this->getMicroTime() - $this->initTime;
return($oaTime);
}//end start_time
/**
* print out a log of all the timers that were registered
*
*/
public function printTimers($enabled=false)
{
if($this->output_enabled||$enabled){
$TimedTotal = 0;
$tot_perc = 0;
ksort($this->description);
print("<pre>\n");
$oaTime = $this->getMicroTime() - $this->initTime;
echo"============================================================================\n";
echo " PROFILER OUTPUT\n";
echo"============================================================================\n";
print( "Calls Time Routine\n");
echo"-----------------------------------------------------------------------------\n";
while (list ($key, $val) = each ($this->description)) {
$t = $this->elapsedTime($key);
$total = $this->running[$key];
$count = $this->count[$key];
$TimedTotal += $total;
$perc = ($total/$oaTime)*100;
$tot_perc+=$perc;
// $perc=sprintf("%3.2f", $perc );
$lines[ sprintf( "%3d %3.4f ms (%3.2f %%) %s\n", $count, $total*1000, $perc, $key) ] = $total;
}
arsort($lines);
foreach($lines as $line => $total) {
echo $line;
}
echo "\n";
$missed=$oaTime-$TimedTotal;
$perc = ($missed/$oaTime)*100;
$tot_perc+=$perc;
// $perc=sprintf("%3.2f", $perc );
printf( " %3.4f ms (%3.2f %%) %s\n", $missed*1000,$perc, "Missed");
echo"============================================================================\n";
printf( " %3.4f ms (%3.2f %%) %s\n", $oaTime*1000,$tot_perc, "OVERALL TIME");
echo"============================================================================\n";
print("</pre>");
}
}
public function printTrace( $enabled=false )
{
if($this->trace_enabled||$enabled){
print("<pre>");
print("Trace\n$this->trace\n\n");
print("</pre>");
}
}
/// Internal Use Only Functions
/**
* Get the current time as accuratly as possible
*
*/
public function getMicroTime(){
$tmp=explode(' ', microtime());
$rt=$tmp[0]+$tmp[1];
return $rt;
}
/**
* resume an individual timer
*
*/
public function __resumeTimer($name){
$this->trace.="resume $name\n";
$this->startTime[$name] = $this->getMicroTime();
}
/**
* suspend an individual timer
*
*/
public function __suspendTimer($name){
$this->trace.="suspend $name\n";
$this->endTime[$name] = $this->getMicroTime();
if (!array_key_exists($name, $this->running))
$this->running[$name] = $this->elapsedTime($name);
else
$this->running[$name] += $this->elapsedTime($name);
}
}
Jump to Line
Something went wrong with that request. Please try again.