6. Static Filesystem Handler

The StaticFSHandler Component manages Filesystem Data / Mime-Types for Static Data Requests.

All Virtual Host dependend file properties will be loaded at startup into static C++ class member Objects / Structs.

The File Data will be mmapped() into Kernel-Space for sendfile() usage when requested. If a files size is bigger than 2 Megabytes a huge-page for mmap() will be tried to allocate.

Warning

A huge amount of files / subdirs currently is a performance killer. Segmentation on subdirs must be implemented in an upcoming release.

6.1. Program Logic

6.1.1. Initialization

Loop recursive over files found in Virtual Host dir (from configuration). Add properties to internal C++ Objects / Structs.

All found files will be mmapped() (read into memory) for sendfile() processing.

6.1.2. Get Property

When a HTTP request for a Static File arrives, the files properties (e.g. SendfileFD) must be determined / returned. This happens inside multiple parallel ResultProcessors Threads.

Due to immutable member Objects / Structs a pointer can be used for parallel read access.