Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/rocksdb/utilities/transactions/lock/range/range_tree/lib/portability/txn_subst.h b/src/rocksdb/utilities/transactions/lock/range/range_tree/lib/portability/txn_subst.h
new file mode 100644
index 000000000..803914862
--- /dev/null
+++ b/src/rocksdb/utilities/transactions/lock/range/range_tree/lib/portability/txn_subst.h
@@ -0,0 +1,27 @@
+//
+// A substitute for ft/txn/txn.h
+//
+#pragma once
+
+#include <set>
+
+#include "../util/omt.h"
+
+typedef uint64_t TXNID;
+#define TXNID_NONE ((TXNID)0)
+
+// A set of transactions
+//  (TODO: consider using class toku::txnid_set. The reason for using STL
+//   container was that its API is easier)
+class TxnidVector : public std::set<TXNID> {
+ public:
+  bool contains(TXNID txnid) { return find(txnid) != end(); }
+};
+
+// A value for lock structures with a meaning "the lock is owned by multiple
+// transactions (and one has to check the TxnidVector to get their ids)
+#define TXNID_SHARED (TXNID(-1))
+
+// Auxiliary value meaning "any transaction id will do".  No real transaction
+// may have this is as id.
+#define TXNID_ANY (TXNID(-2))