summaryrefslogtreecommitdiff
path: root/persistency.mdwn
blob: 36f90c8a6d1772baf3960334990dbffce39ff07d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
[[!meta copyright="Copyright © 2007, 2008, 2010 Free Software Foundation,
Inc."]]

[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]

A persistent object is an object that survives reboot.
On [[Unix]], files and directories are persistent but
processes and [[unix/file_descriptor]]s are not.  [[microkernel/EROS]] is
an example of an orthogonally persistent system:
processes and [[capabilities|capability]] also survive reboot.  To a
process, it generally only looks as if it had not been
scheduled for a long time; the rest of its environment
remains essentially the indistinguishable.