[fpc-devel] simpleipc issues

Tomas Hajny XHajT03 at hajny.biz
Tue Sep 15 18:07:26 CEST 2015

On Tue, September 15, 2015 10:04, Michael Van Canneyt wrote:
> On Tue, 15 Sep 2015, Ondrej Pokorny wrote:
>> Are there some high level crossplatform semaphore functions in the FCL?
>> The
>> cthreads/cIntSemaphoreOpen etc. seem to be available on unix only. What
>> about
>> OS/2?
> Careful, these are thread semaphores, I think.
> I am talking about cross-process semaphores. They are in the baseunix/unix
> units.
> I suppose OS/2 has semaphores, but Tomas will need to confirm.

OS/2 certainly has semaphores (three types of them, in fact ;-) - event
semaphores, mutex semaphores and muxwait semaphores).

> But if OS/2 currently does not support simpleIPC, then the point is moot
> anyway.

See packages/fcl-process/src/os2/simpleipc.inc. Moreover, the code posted
by Ondrej does not contain anything that should not compile on OS/2 at the
first sight, that's why I wanted to have a test allowing to check whether
it really works. The fact that sending messages across processes would be
usually implemented differently if using OS/2 API features directly may
not be so important.


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