WordPress at a glance
function is not described

domain_mapping_supercachedir() WPSCache 1.0

No Hooks.

Return

Null. Nothing.

Usage

domain_mapping_supercachedir( $dir );

Code of domain_mapping_supercachedir() WPSCache 1.7.1

<?php
function domain_mapping_supercachedir( $dir ) {
	global $cache_path;

	if ( ! function_exists( 'domain_mapping_warning' ) ) {
		return $dir;
	}

	$siteurl = domain_mapping_siteurl( false );
	if ( ! $siteurl ) {
		return $dir;
	}

	$sitedir = trailingslashit( preg_replace( '`^(https?:)?//`', '', $siteurl ) );

	return trailingslashit( $cache_path . 'supercache/' . $sitedir );
}