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samba-technical@samba.org. If
you do a tdb_set_max_dead(tdb, n), then for this tdb a delete operation will
only mark a record as dead and re-use it if a new record is created. The
parameter n allows for at most n dead records per hash chain. If this number
is exceeded, all dead records are put on the central freelist.
Volker
(This used to be commit 98a27ab28a3cd554e370a9a0e3652f4dea8749e9)
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in-memory
mirrors of the hash chain locks to a dynamically allocated one.
Jeremy, I count on you to revert it if the build farm freaks out, it's after
midnight here :-)
Volker
(This used to be commit 7b5db2e472c7e27231fa432d3930789e708abd09)
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this is in preparation of a merge in the other direction
(This used to be commit db3211079fd594aa03c3b9bb3eb6ad86bdd32837)
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call which does a read lock on all chains. These will be used to make
ldb searches more efficient
(This used to be commit de664ec1f8cf179f1d650563272c0de3f7636e2b)
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This clearly links the log function with its private pointer, and
makes the argument list for tdb_open_ex a bit shorter.
Andrew Bartlett
(This used to be commit 5d5503e8d8a10ead3ef21a5ffda52cadb9a07727)
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metze
(This used to be commit 249bf24a40f78aab181a4cce8c42902859e43238)
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as part of ldb.
This allows tdb failures to be passed all the way up to Samba's DEBUG
system, which allowed easier debugging.
Unfortunately I had to extend the tdb API, as the logging function
didn't have a context pointer.
I've worked over the 'debug levels' in TDB. Most of them were 0,
which didn't seem right, as some were trace-like messages. We didn't
see any of these previously, except when accessing TDB directly.
Andrew Bartlett
(This used to be commit 58898092c1ce043f6d698db5065f372b79109e22)
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(This used to be commit 5f1d52f232051324082b840f29dd7719a9328bd5)
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(This used to be commit 83168c7e76c7e3adcdb0eec1611827d4db09f858)
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samba-technical posting for more details on the transactions design.
This also adds a number of command line arguments to tdbtorture,
making it more flexible, and fixes some lock deadlock conditions in
the tdbtorture code.
(This used to be commit 06bd8abba942ec9f1e23f5c5d546cbb71ca3a701)
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just involves splitting up the core tdb.c code into separate files on
logical boundaries, but there are some minor functional changes as well:
- move the 'struct tdb_context' into tdb_private.h, hiding it from
users. This was done to allow the structure to change without
breaking code that uses tdb.
- added accessor functions tdb_fd(), tdb_name(), and tdb_log_fn() to
access the elements of struct tdb_context that were used by
external code but are no longer visible
- simplied tdb_append() to use tdb_fetch()/tdb_store(), which is just
as good due to the way tdb locks work
- changed some of the types (such as tdb_off to tdb_off_t) to make
syntax highlighting work better
- removed the old optional spinlock code. It was a bad idea.
- fixed a bug in tdb_reopen_all() that caused tdbtorture to sometimes
fail or report nasty looking errors. This is the only real bug
fixed in this commit. Jeremy/Jerry, you might like to pickup this
change for Samba3, as that could definately affect smbd in
Samba3.
The aim of all of these changes is to make the tdb
transactions/journaling code I am working on easier to write. I
started to write it on top of the existing tdb.c code and it got very
messy. Splitting up the code makes it much easier to follow.
There are more cleanups we could do in tdb, such as using uint32_t
instead of u32 (suggested by metze). I'll leave those for another day.
(This used to be commit 4673cdd0d261614e707b72a7a348bb0e7dbb2482)
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