ProfilerSimple.php

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<?php
class ProfilerSimple extends Profiler {
    var $mMinimumTime = 0;

    var $errorEntry;

    public function getZeroEntry() {
        return array(
            'cpu'     => 0.0,
            'cpu_sq'  => 0.0,
            'real'    => 0.0,
            'real_sq' => 0.0,
            'count'   => 0
        );
    }

    public function getErrorEntry() {
        $entry = $this->getZeroEntry();
        $entry['count'] = 1;
        return $entry;
    }

    public function updateEntry( $name, $elapsedCpu, $elapsedReal ) {
        $entry =& $this->mCollated[$name];
        if ( !is_array( $entry ) ) {
            $entry = $this->getZeroEntry();
            $this->mCollated[$name] =& $entry;
        }
        $entry['cpu'] += $elapsedCpu;
        $entry['cpu_sq'] += $elapsedCpu * $elapsedCpu;
        $entry['real'] += $elapsedReal;
        $entry['real_sq'] += $elapsedReal * $elapsedReal;
        $entry['count']++;
    }

    public function isPersistent() {
        /* Implement in output subclasses */
        return false;
    }

    protected function addInitialStack() {
        $this->errorEntry = $this->getErrorEntry();

        $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->debugGroup( 'profileerror', "Profiling error: $functionname" );
        } else {
            if ( $functionname == 'close' ) {
                if ( $ofname != '-total' ) {
                    $message = "Profile section ended by close(): {$ofname}";
                    $this->debugGroup( 'profileerror', $message );
                    $this->mCollated[$message] = $this->errorEntry;
                }
                $functionname = $ofname;
            } elseif ( $ofname != $functionname ) {
                $message = "Profiling error: in({$ofname}), out($functionname)";
                $this->debugGroup( 'profileerror', $message );
                $this->mCollated[$message] = $this->errorEntry;
            }
            $elapsedcpu = $this->getTime( 'cpu' ) - $octime;
            $elapsedreal = $this->getTime() - $ortime;
            $this->updateEntry( $functionname, $elapsedcpu, $elapsedreal );
            $this->updateTrxProfiling( $functionname, $elapsedreal );
        }
    }

    public function getRawData() {
        // Calling the method of the parent class results in fatal error.
        // @todo Implement this correctly.
        return array();
    }

    public function getFunctionReport() {
        /* Implement in output subclasses */
        return '';
    }

    public function logData() {
        /* Implement in subclasses */
    }
}