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| author | Volker Lendecke <vl@samba.org> | 2012-03-27 14:31:04 +0200 |
|---|---|---|
| committer | Volker Lendecke <vl@samba.org> | 2012-04-17 10:21:00 +0200 |
| commit | 94cf5cc284ba908675ed5fd573dd101d7b9bad02 (patch) | |
| tree | fa3cbe066f5400c31cfa13ea149e13bada59fbdc /source3/lib/dbwrap/dbwrap.h | |
| parent | bd9178506ed8796a0aa7e4e757f2adc20dcae4f8 (diff) | |
| download | samba-94cf5cc284ba908675ed5fd573dd101d7b9bad02.tar.gz samba-94cf5cc284ba908675ed5fd573dd101d7b9bad02.tar.bz2 samba-94cf5cc284ba908675ed5fd573dd101d7b9bad02.zip | |
s3: Add dbwrap_try_fetch_locked
This is designed to spread the load on individual ctdb records to allow upper
layers to do backoff mechanisms. In the ctdb case, do not get the record if a
local lock is already taken. If we are not dmaster, do at most one migrate
attempt.
For the tdb case, this is a nonblocking fetch_locked. If someone else has the
lock, give up.
Diffstat (limited to 'source3/lib/dbwrap/dbwrap.h')
| -rw-r--r-- | source3/lib/dbwrap/dbwrap.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/source3/lib/dbwrap/dbwrap.h b/source3/lib/dbwrap/dbwrap.h index 386a9fa2a4..9981b6dfd9 100644 --- a/source3/lib/dbwrap/dbwrap.h +++ b/source3/lib/dbwrap/dbwrap.h @@ -34,6 +34,9 @@ NTSTATUS dbwrap_record_delete(struct db_record *rec); struct db_record *dbwrap_fetch_locked(struct db_context *db, TALLOC_CTX *mem_ctx, TDB_DATA key); +struct db_record *dbwrap_try_fetch_locked(struct db_context *db, + TALLOC_CTX *mem_ctx, + TDB_DATA key); NTSTATUS dbwrap_delete(struct db_context *db, TDB_DATA key); NTSTATUS dbwrap_store(struct db_context *db, TDB_DATA key, |