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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 profiler
* @todo document methods (?)
* @ingroup Profiler
*/
class ProfilerSimpleTrace extends ProfilerStandard {
protected $trace = "Beginning trace: \n";
protected $memory = 0;
protected function collateOnly() {
return true;
}
public function profileIn( $functionname ) {
parent::profileIn( $functionname );
$this->trace .= " " . sprintf( "%6.1f", $this->memoryDiff() ) .
str_repeat( " ", count( $this->mWorkStack ) ) . " > " . $functionname . "\n";
}
public function profileOut( $functionname ) {
$item = end( $this->mWorkStack );
parent::profileOut( $functionname );
if ( !$item ) {
$this->trace .= "Profiling error: $functionname\n";
} else {
list( $ofname, /* $ocount */, $ortime ) = $item;
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";
}
}
protected function memoryDiff() {
$diff = memory_get_usage() - $this->memory;
$this->memory = memory_get_usage();
return $diff / 1024;
}
public function logData() {
if ( $this->mTemplated ) {
if ( PHP_SAPI === 'cli' ) {
print "<!-- \n {$this->trace} \n -->";
} elseif ( $this->getContentType() === 'text/html' ) {
print "<!-- \n {$this->trace} \n -->";
} elseif ( $this->getContentType() === 'text/javascript' ) {
print "\n/*\n {$this->trace}\n*/";
} elseif ( $this->getContentType() === 'text/css' ) {
print "\n/*\n {$this->trace}\n*/";
}
}
}
}
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