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suite and a very simple tool for manuipulating the databases.
the main code is in tdb/tdb.c and includes both mmap and file based
IO. All databases auto-expand and allow multiple simultaneous writers.
the next step is using this new capability in lots of places in Samba
where we have existing ad-hoc databases
(This used to be commit
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| README | ||
| tdb.c | ||
| tdb.h | ||
| tdbtest.c | ||
| tdbtool.c | ||
This is a simple database API. It was inspired by the realisation that in Samba we have several ad-hoc bits of code that essentially implement small databases for sharing structures between parts of Samba. As I was about to add another I realised that a generic database module was called for to replace all the ad-hoc bits. I based the interface on gdbm. I couldn't use gdbm as we need to be able to have multiple writers to the databases at one time. Compilation ----------- add HAVE_MMAP=1 to use mmap instead of read/write add TDB_DEBUG for verbose debug info add NOLOCK=1 to disable locking code Testing ------- Compile tdbtest.c and link with gdbm for testing. tdbtest will perform identical operations via tdb and gdbm then make sure the result is the same Interface --------- The interface is very similar to gdbm except for the following: - different open interface. The tdb_open call is more similar to a traditional open() - no tdbm_reorganise() function - no tdbm_sync() function. No operations are cached in the library anyway - added a tdb_traverse() function for traversing the whole database