SaferMatlabSemaphore
A slightly safer wrapper for Win32-API Semaphore for Matlab. Allows to limit number of processes, that are allowed to enter a specific session of code simultaneously.
Main features:
The code is based on https://www.mathworks.com/matlabcentral/fileexchange/45504-semaphore-posix-and-windows by Andrew Smart.
The main changes in this version are:
- Allows to specify wait timeout
- Added a Matlab wrapper that automatically creates unique identifiers
- removed POSIX version
Quickstart:
- Run "semaphore_build_mex.m" to build the mex. The output should look like this:
>> semaphore_build_mex
Building with 'Microsoft Visual C++ 2013 Professional (C)'.
MEX completed successfully.- Run "demo_semaphore.m" to take a look on how it works. The output should look like this:
>> demo_semaphore
i=1 time=0000.085 p1
i=1 time=0005.085 p2 - before wait
i=8 time=0000.086 p1
i=8 time=0005.087 p2 - before wait
i=2 time=0000.078 p1
i=2 time=0005.079 p2 - before wait
i=7 time=0000.084 p1
i=7 time=0005.085 p2 - before wait
i=6 time=0000.077 p1
i=6 time=0005.078 p2 - before wait
i=3 time=0000.085 p1
i=3 time=0005.085 p2 - before wait
i=5 time=0000.077 p1
i=5 time=0005.078 p2 - before wait
i=4 time=0000.077 p1
i=4 time=0005.078 p2 - before wait
i=2 time=0005.093 p3 - token granted
i=2 time=0006.181 p4 - token released
i=6 time=0005.092 p3 - token granted
i=6 time=0006.194 p4 - token released
i=5 time=0006.194 p3 - token granted
i=4 time=0006.182 p3 - token granted
i=1 time=0007.269 p3 - token granted
i=7 time=0007.260 p3 - token granted
i=5 time=0007.258 p4 - token released
i=4 time=0007.268 p4 - token released
i=1 time=0008.360 p4 - token released
i=8 time=0008.355 p3 - token granted
i=7 time=0008.354 p4 - token released
i=3 time=0008.361 p3 - token granted
i=8 time=0009.448 p4 - token released
i=3 time=0009.449 p4 - token released
i=2 time=0011.182 p5 - finished
i=6 time=0011.195 p5 - finished
i=5 time=0012.259 p5 - finished
i=4 time=0012.269 p5 - finished
i=1 time=0013.361 p5 - finished
i=7 time=0013.355 p5 - finished
i=8 time=0014.449 p5 - finished
i=3 time=0014.450 p5 - finished