On 15/09/15 13:33, Ondrej Pokorny wrote:
This is because Michael Van Canneyt pointed me to "man sem_overview".
The first Google search pointed me to
http://linux.die.net/man/7/sem_overview where I found the "Named
semaphores" with functions sem_open, sem_close etc. with the
description that they can be used across processes. A quick search in
FPC sources pointed me again to the cthreads unit.
All semaphore use has been removed from the cthreads unit in the mean time.
They also should not be used on OS X anymore, because Apple forbids
their use in applications submitted to their appstore (I guess because
it is difficult for system frameworks to automatically determine whether
they are only used in safe way; i.e., in a way that doesn't make the
codesigned host application into a proxy for any other application to
carry out operations on their behalf).
Jonas
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