ProfilerSimpleTrace.php

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<?php
class ProfilerSimpleTrace extends ProfilerSimple {
        var $trace = "";
        var $memory = 0;

        function __construct( $params ) {
                global $wgRequestTime, $wgRUstart;
                parent::__construct( $params );
                if ( !empty( $wgRequestTime ) && !empty( $wgRUstart ) ) {
                        $this->mWorkStack[] = array( '-total', 0, $wgRequestTime, $this->getCpuTime( $wgRUstart ) );
                }
                $this->trace .= "Beginning trace: \n";
        }

        function profileIn($functionname) {
                $this->mWorkStack[] = array($functionname, count( $this->mWorkStack ), microtime(true), $this->getCpuTime());
                $this->trace .= "         " . sprintf("%6.1f",$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 = microtime( true ) - $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 -->";
        }
}