Yes a "semaphore" is very portable (at least within Unix environments).
You can also use "flock()" on a file. Another trick is just to create
and destroy a file as a sort of gate condition.
- Matt
Alan Cox wrote:
>
> > pthread_mutex_xxxx, but this is for threads. Do I use a semaphore? Seems
> > like overkill; I just need a binary yes or no lock.
>
> Portably you use a semaphore. If you want to be faster and non portable you
> can use shared memory regions and tricks but those may not work on all cpus
>
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