idl-loop: Move idl-loop into ovsdb-idl library.

idl-loop is needed in implementing other controller (i.e., vtep controller).
So, this commit moves the logic into ovsdb-idl library module.

Signed-off-by: Alex Wang <alexw@nicira.com>
Acked-by: Russell Bryant <rbryant@redhat.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/ovsdb-idl.h b/lib/ovsdb-idl.h
index a49f84fb6..519412231 100644
--- a/lib/ovsdb-idl.h
+++ b/lib/ovsdb-idl.h
@@ -222,5 +222,24 @@ const struct ovsdb_idl_row *ovsdb_idl_txn_insert(
     const struct uuid *);
 
 struct ovsdb_idl *ovsdb_idl_txn_get_idl (struct ovsdb_idl_txn *);
+
+
+/* ovsdb_idl_loop provides an easy way to manage the transactions related
+ * to 'idl' and to cope with different status during transaction. */
+struct ovsdb_idl_loop {
+    struct ovsdb_idl *idl;
+    unsigned int skip_seqno;
+
+    struct ovsdb_idl_txn *committing_txn;
+    unsigned int precommit_seqno;
+
+    struct ovsdb_idl_txn *open_txn;
+};
+
+#define OVSDB_IDL_LOOP_INITIALIZER(IDL) { .idl = (IDL) }
+
+void ovsdb_idl_loop_destroy(struct ovsdb_idl_loop *);
+struct ovsdb_idl_txn *ovsdb_idl_loop_run(struct ovsdb_idl_loop *);
+void ovsdb_idl_loop_commit_and_wait(struct ovsdb_idl_loop *);
 
 #endif /* ovsdb-idl.h */