ProfilerFunctions.php

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<?php
function wfGetRusage() {
    if ( !function_exists( 'getrusage' ) ) {
        return false;
    } elseif ( defined( 'HHVM_VERSION' ) && PHP_OS === 'Linux' ) {
        return getrusage( 2 /* RUSAGE_THREAD */ );
    } else {
        return getrusage( 0 /* RUSAGE_SELF */ );
    }
}
 
function wfProfileIn( $functionname ) {
}
 
function wfProfileOut( $functionname = 'missing' ) {
}