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3b7b979ee9
Without this, to notify watchers you need to actually store data. This might be a waste of resources. locking.tdb waiters might actually wait for leases.tdb or brlock.tdb changes, and locking.tdb records can be large. Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org>
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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Watch dbwrap record changes
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Copyright (C) Volker Lendecke 2012
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __DBWRAP_WATCH_H__
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#define __DBWRAP_WATCH_H__
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#include <tevent.h>
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#include "dbwrap/dbwrap.h"
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#include "messages.h"
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struct db_context *db_open_watched(TALLOC_CTX *mem_ctx,
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struct db_context **backend,
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struct messaging_context *msg);
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struct tevent_req *dbwrap_watched_watch_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct db_record *rec,
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struct server_id blocker);
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NTSTATUS dbwrap_watched_watch_recv(struct tevent_req *req,
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bool *blockerdead,
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struct server_id *blocker);
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/*
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* Wake up watchers without having modified the record value. One
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* usecase at the time of this commit is: We have lease break waiters
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* waiting on a locking.tdb record. They should be woken up when a
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* lease is broken, which does not modify the locking.tdb record.
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*/
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void dbwrap_watched_wakeup(struct db_record *rec);
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#endif /* __DBWRAP_WATCH_H__ */
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