Re: Mmap and semaphores?

[Thomas Pfaff <tpfaff at gmx dot net>]

Please check the sem_init return code first.
Cygwin does not support process shared semaphores at the moment.

Thomas

Elliot Mednick wrote:
> Hello,
>
> I'm try to write a client server application that used shared memory and
> asemaphores.  Appended is a simple test case.  It works under Solaris
> using the -lposix4 library.  But it doesn't work under Cygwin.  Given
> the lack of any otherquestions about this, I imagine that I'm doing
> something wrong, or it's functionality is limited.
>
> The server maps a file as shared, inits a semaphore, then waits.  The
> client, which you start after the server waits, shares the same file
> (this part works) and attempts to post the semaphore.  The server ought
> to -- but doesn't -- wake up.  It does in Solaris.

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