libitm: Fix privatization safety interaction with serial mode.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@232322 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 0 deletions

diff --git a/libitm/dispatch.h b/libitm/dispatch.h
index 0bf1a81b35e5..4ec563158293 100644
--- a/libitm/dispatch.h
+++ b/libitm/dispatch.h
@@ -291,6 +291,10 @@ public:
   // Rolls back a transaction. Called on abort or after trycommit() returned
   // false.
   virtual void rollback(gtm_transaction_cp *cp = 0) = 0;
+  // Returns true iff the snapshot is most recent, which will be the case if
+  // this transaction cannot be the reason why other transactions cannot
+  // ensure privatization safety.
+  virtual bool snapshot_most_recent() = 0;
 
   // Return an alternative method that is compatible with the current
   // method but supports closed nesting. Return zero if there is none.