Mex Multithreading

Example of (Windows) multi-threading in a MEX file
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Aktualisiert 2. Sep 2008

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Nowadays, Matlab is multi-threaded but most MEX files are still single threaded. This is an simple example of c-code for MEX file multi-threading.

The mex function "y = square(x)" is written in c-code and starts 2 worker threads. The first worker thread will square all values on the even input indexes x[0] x[2] .. x[n], and the second worker thread all odd indexes x[1] x[3] .. x[n]. Also demonstrates thread safety by using Mutex to lock percentage variable.

example,
mex square.c -v;
y = square([1 2 3 4 5 6 7 8 9])

note:
The function uses <windows.h> (function sleep ) and <process.h> ( function _beginthreadex ) which are included with visual studio and some other compilers.

This example is tested with Windows Vista 64 and Visual Studio 2008 compiler, and with (default) LCC compiler and Vista 32.

Zitieren als

Dirk-Jan Kroon (2024). Mex Multithreading (https://www.mathworks.com/matlabcentral/fileexchange/21233-mex-multithreading), MATLAB Central File Exchange. Abgerufen .

Kompatibilität der MATLAB-Version
Erstellt mit R2008a
Kompatibel mit allen Versionen
Plattform-Kompatibilität
Windows macOS Linux
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Version Veröffentlicht Versionshinweise
1.0.0.0

Now also works with the Matlab LCC compiler.