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.
-- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
