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Diffstat (limited to 'hurd/libstore/copy_store.mdwn')
| -rw-r--r-- | hurd/libstore/copy_store.mdwn | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/hurd/libstore/copy_store.mdwn b/hurd/libstore/copy_store.mdwn deleted file mode 100644 index 5df5d220..00000000 --- a/hurd/libstore/copy_store.mdwn +++ /dev/null @@ -1,25 +0,0 @@ -[[!meta copyright="Copyright © 2000, 2007, 2008, 2009 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]]."]]"""]] - -[[!meta title="copy store: copy-on-write; discard changes on termination"]] - -A *copy* store is meaningful only with respect to a child store. What a *copy* -store does is to read the child store's entire contents into memory at startup -time and then use that buffer as the contents of the store thereafter. (The -code for this is in `libstore/copy.c`.) - -Because of how the interfaces are specified, reading the entire contents of a -[[*zero* store|zero store]] in fact means just `vm_allocate`ing fresh memory. -So, a *copy* store based on a [[*zero* store|zero store]] is just what you'd -get from `vm_allocate`ing some memory and passing it into -`store_buffer_create`. - -See a [[ramdisk example|examples/ramdisk]]. |