r1195873 | stsp | 2011-11-01 08:46:25 +0000 (Tue, 01 Nov 2011)
Allow deletion of multiple, potentially non-nested, targets from a working
copy within a single sqlite transaction. Should improve performance of
'svn rm dir/*', especially on NFS.
For now, this change only adds new APIs based on existing single-target APIs.
The new APIs lack support for moves. This avoids having to update all callers
of existing APIs, as well as making a backport to 1.7 easier.
Later, we could merge the single-target APIs with these new ones.
No public APIs have been changed.
Reported by: Michael Rytting
(svn_wc__delete_many): New. Based on svn_wc__delete_internal().
(op_delete_txn): Move most code in this function ...
(delete_node): ... to here. The difference being that delete_node() does
not clear the delete-list from the DB, so it can be called multiple
times to delete a number of nodes.
(op_delete_many_txn, op_delete_many_baton_t): New. Creates a new delete-list
in the DB and then calls delete_node() for each deletion target.
(svn_wc__db_op_delete_many): New. This function asserts that all
deletion-targets share a common working copy root, locks the entire
working copy, and calls op_delete_many_txn() within an sqlite transaction.
(delete_with_write_lock_baton): Change the PATH member to a TARGETS list.
(delete_with_write_lock_func): Adjust per above change.
(svn_client_delete4): Instead of looping over the target list and calling
the delete_with_write_lock_func() for each, group targets by wcroots
and pass the entire target list for each wcroot down to lower layers.