1 files changed, 58 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/linearstore/journal/enums.h b/qpid/cpp/src/qpid/linearstore/journal/enums.h
new file mode 100644
index 0000000000..90ec355955
--- /dev/null
+++ b/qpid/cpp/src/qpid/linearstore/journal/enums.h
@@ -0,0 +1,58 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+#ifndef QPID_LINEARSTORE_JOURNAL_ENUMS_H
+#define QPID_LINEARSTORE_JOURNAL_ENUMS_H
+
+namespace qpid {
+namespace linearstore {
+namespace journal {
+
+// TODO: Change this to flags, as multiple of these conditions may exist simultaneously
+/**
+* \brief Enumeration of possible return states from journal read and write operations.
+*/
+enum _iores
+{
+    RHM_IORES_SUCCESS = 0,  ///< Success: IO operation completed noramlly.
+    RHM_IORES_PAGE_AIOWAIT, ///< IO operation suspended - next page is waiting for AIO.
+    RHM_IORES_FILE_AIOWAIT, ///< IO operation suspended - next file is waiting for AIO.
+    RHM_IORES_EMPTY,        ///< During read operations, nothing further is available to read.
+    RHM_IORES_TXPENDING     ///< Operation blocked by pending transaction.
+};
+typedef _iores iores;
+
+static inline const char* iores_str(iores res)
+{
+    switch (res)
+    {
+        case RHM_IORES_SUCCESS: return "RHM_IORES_SUCCESS";
+        case RHM_IORES_PAGE_AIOWAIT: return "RHM_IORES_PAGE_AIOWAIT";
+        case RHM_IORES_FILE_AIOWAIT: return "RHM_IORES_FILE_AIOWAIT";
+        case RHM_IORES_EMPTY: return "RHM_IORES_EMPTY";
+        case RHM_IORES_TXPENDING: return "RHM_IORES_TXPENDING";
+    }
+    return "<iores unknown>";
+}
+
+}}}
+
+#endif // ifndef QPID_LINEARSTORE_JOURNAL_ENUMS_H