1 files changed, 13 insertions, 1 deletions
diff --git a/cpp/src/qpid/client/StateManager.cpp b/cpp/src/qpid/client/StateManager.cpp
index 0cb3c6b9d4..5462e0fed4 100644
--- a/cpp/src/qpid/client/StateManager.cpp
+++ b/cpp/src/qpid/client/StateManager.cpp
@@ -19,7 +19,7 @@
  *
  */
 
-#include "StateManager.h"
+#include "qpid/client/StateManager.h"
 #include "qpid/framing/amqp_framing.h"
 
 using namespace qpid::client;
@@ -60,6 +60,18 @@ void StateManager::setState(int s)
     stateLock.notifyAll();
 }
 
+bool StateManager::setState(int s, int expected)
+{
+    Monitor::ScopedLock l(stateLock);
+    if (state == expected) {
+        state = s;
+        stateLock.notifyAll();
+        return true;
+    } else {
+        return false;
+    }
+}
+
 int StateManager::getState() const
 {
     Monitor::ScopedLock l(stateLock);