Persistence of file implemented objects

[Richard H Lee <ricardohenrylee at gmail dot com>]

Various objects like fifo pipes, POSIX IPC shared memory and semaphores 
that are implemented through the filesystem in cygwin persist when the 
program abnornally terminates. They also persist through reboots, which 
is different to the behaviour on linux. This is also different with the 
case of sysV IPC + cygserver on cygwin which clears after reboots.

If there anyway to clear out orphaned objects or to make sure they are 
released in the event of an abnormal termination?

Does the POSIX specification even require the release of these objects 
in these situations?

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