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Tcl-mmap

Jul 20, 2023

New TCL channel type using mmap-ed files

This extension provides a Tcl interface to the mmap2 POSIX system call.

It provides a Tcl package that allows Tcl scripts to 1 Memory map files for improved access efficiency; 2 Share memory between related processes; 3 Easily implement cyclic persistent log files.

The functionality of ‘mmap’ is exported from this extension in the form of a new Tcl channel type, named “mmap”. A memory mapping is established with the ‘mmap’ command. Following ‘mmap’ execution, access to the memory mapped file is done via the standard Tcl commands puts/gets/seek/flush/close/fconfigure, only that this time these commands operate on memory, rather than on a file.

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