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/*
*
* 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
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