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<?php
/**
* Profiler showing execution trace.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Profiler
*/
/**
* Execution trace
* @todo document methods (?)
* @ingroup Profiler
*/
class ProfilerSimpleTrace extends ProfilerSimple {
var $trace = "Beginning trace: \n";
var $memory = 0;
function profileIn( $functionname ) {
parent::profileIn( $functionname );
$this->trace .= " " . sprintf("%6.1f",$this->memoryDiff()) .
str_repeat( " ", count($this->mWorkStack)) . " > " . $functionname . "\n";
}
function profileOut($functionname) {
global $wgDebugFunctionEntry;
if ( $wgDebugFunctionEntry ) {
$this->debug(str_repeat(' ', count($this->mWorkStack) - 1).'Exiting '.$functionname."\n");
}
list( $ofname, /* $ocount */ , $ortime ) = array_pop( $this->mWorkStack );
if ( !$ofname ) {
$this->trace .= "Profiling error: $functionname\n";
} else {
if ( $functionname == 'close' ) {
$message = "Profile section ended by close(): {$ofname}";
$functionname = $ofname;
$this->trace .= $message . "\n";
}
elseif ( $ofname != $functionname ) {
$this->trace .= "Profiling error: in({$ofname}), out($functionname)";
}
$elapsedreal = $this->getTime() - $ortime;
$this->trace .= sprintf( "%03.6f %6.1f", $elapsedreal, $this->memoryDiff() ) .
str_repeat(" ", count( $this->mWorkStack ) + 1 ) . " < " . $functionname . "\n";
}
}
function memoryDiff() {
$diff = memory_get_usage() - $this->memory;
$this->memory = memory_get_usage();
return $diff / 1024;
}
function logData() {
print "<!-- \n {$this->trace} \n -->";
}
}
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