ProfilerSimple.php

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<?php
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']++;

                }
        }

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

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

        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' );
                }
        }
}