Persistence of file implemented objects

Richard H Lee ricardohenrylee@gmail.com
Sun Jul 1 18:17:00 GMT 2012


> Fifos persist on reboot on Linux or Cygwin.  They live on the
> filesystem.  I don't see how POSIX IPC shared memory and semaphores
> could persist.

Sorry, I meant unix/bsd sockets.

Regarding the POSIX IPC's, they are stored in /dev . In regular *nix, 
/dev do not represent "physical" files on the filesystem, hence they do 
not persist over boot.

In cygwin, they actually do represent physical files. So if they are not 
freed correctly by the program, the persist over to the next boot.

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