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<?php
/**
* Base class for simple profiling.
*
* 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
*/
/**
* Simple profiler base class.
* @todo document methods (?)
* @ingroup Profiler
*/
class ProfilerSimple extends Profiler {
var $mMinimumTime = 0;
var $zeroEntry = array( 'cpu' => 0.0, 'cpu_sq' => 0.0, 'real' => 0.0, 'real_sq' => 0.0, 'count' => 0 );
var $errorEntry;
public function isPersistent() {
/* Implement in output subclasses */
return false;
}
protected function addInitialStack() {
$this->errorEntry = $this->zeroEntry;
$this->errorEntry['count'] = 1;
$initialTime = $this->getInitialTime();
$initialCpu = $this->getInitialTime( 'cpu' );
if ( $initialTime !== null && $initialCpu !== null ) {
$this->mWorkStack[] = array( '-total', 0, $initialTime, $initialCpu );
$this->mWorkStack[] = array( '-setup', 1, $initialTime, $initialCpu );
$this->profileOut( '-setup' );
} else {
$this->profileIn( '-total' );
}
}
function setMinimum( $min ) {
$this->mMinimumTime = $min;
}
function profileIn( $functionname ) {
global $wgDebugFunctionEntry;
if ( $wgDebugFunctionEntry ) {
$this->debug( str_repeat( ' ', count( $this->mWorkStack ) ) . 'Entering ' . $functionname . "\n" );
}
$this->mWorkStack[] = array( $functionname, count( $this->mWorkStack ), $this->getTime(), $this->getTime( 'cpu' ) );
}
function profileOut( $functionname ) {
global $wgDebugFunctionEntry;
if ( $wgDebugFunctionEntry ) {
$this->debug( str_repeat( ' ', count( $this->mWorkStack ) - 1 ) . 'Exiting ' . $functionname . "\n" );
}
list( $ofname, /* $ocount */, $ortime, $octime ) = array_pop( $this->mWorkStack );
if ( !$ofname ) {
$this->debug( "Profiling error: $functionname\n" );
} else {
if ( $functionname == 'close' ) {
$message = "Profile section ended by close(): {$ofname}";
$functionname = $ofname;
$this->debug( "$message\n" );
$this->mCollated[$message] = $this->errorEntry;
}
elseif ( $ofname != $functionname ) {
$message = "Profiling error: in({$ofname}), out($functionname)";
$this->debug( "$message\n" );
$this->mCollated[$message] = $this->errorEntry;
}
$entry =& $this->mCollated[$functionname];
$elapsedcpu = $this->getTime( 'cpu' ) - $octime;
$elapsedreal = $this->getTime() - $ortime;
if ( !is_array( $entry ) ) {
$entry = $this->zeroEntry;
$this->mCollated[$functionname] =& $entry;
}
$entry['cpu'] += $elapsedcpu;
$entry['cpu_sq'] += $elapsedcpu * $elapsedcpu;
$entry['real'] += $elapsedreal;
$entry['real_sq'] += $elapsedreal * $elapsedreal;
$entry['count']++;
$this->updateTrxProfiling( $functionname, $elapsedreal );
}
}
public function getFunctionReport() {
/* Implement in output subclasses */
return '';
}
public function logData() {
/* Implement in subclasses */
}
/**
* Get the actual CPU time or the initial one if $ru is set.
*
* @deprecated in 1.20
* @return float|null
*/
function getCpuTime( $ru = null ) {
wfDeprecated( __METHOD__, '1.20' );
if ( $ru === null ) {
return $this->getTime( 'cpu' );
} else {
# It theory we should use $ru here, but it always $wgRUstart that is passed here
return $this->getInitialTime( 'cpu' );
}
}
}
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