Changeset 25102

Timestamp:

Aug 18, 2009, 6:21:56 AM (17 years ago)

Author:

eugene

Message:

update notes on locking

File:

• branches/eam_branches/20090715/Ohana/src/libdvo/doc/locking.txt (modified) (1 diff)

branches/eam_branches/20090715/Ohana/src/libdvo/doc/locking.txt

@@ -5 +5 @@
 are used vs cases of read/write (hard locks) are needed.
 
-DVO uses a somewhat strong locking policy in
-order to prevent users from getting inconsistent data.  This is good,
-but it prevents DVO letting users have read-only UNIX permissions on a
-database: it is necessary to have wrte from being able tb
+locks set in DVO:
+
+dvo_catalog_lock -- on catalog open & catalog create (all files for
+                    split mode)
+
+gfits_db_lock -- on photcode table read/write and dvo_image_lock
+