diff options
Diffstat (limited to 'qpid/cpp/src/qpid/linearstore/jrnl/rec_tail.h')
-rw-r--r-- | qpid/cpp/src/qpid/linearstore/jrnl/rec_tail.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/qpid/cpp/src/qpid/linearstore/jrnl/rec_tail.h b/qpid/cpp/src/qpid/linearstore/jrnl/rec_tail.h deleted file mode 100644 index 0c36151927..0000000000 --- a/qpid/cpp/src/qpid/linearstore/jrnl/rec_tail.h +++ /dev/null @@ -1,98 +0,0 @@ -/* - * - * 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. - * - */ - -/** - * \file rec_tail.h - * - * Qpid asynchronous store plugin library - * - * File containing code for class mrg::journal::rec_tail (record tail), used to - * finalize a persistent record. The presence of a valid tail at the expected - * position in the journal file indicates that the record write was completed. - * - * \author Kim van der Riet - */ - -#ifndef QPID_LEGACYSTORE_JRNL_REC_TAIL_H -#define QPID_LEGACYSTORE_JRNL_REC_TAIL_H - -#include <cstddef> -#include "qpid/legacystore/jrnl/jcfg.h" - -namespace mrg -{ -namespace journal -{ - -#pragma pack(1) - - /** - * \brief Struct for data common to the tail of all records. The magic number - * used here is the binary inverse (1's complement) of the magic used in the - * record header; this minimizes possible confusion with other headers that may - * be present during recovery. The tail is used with all records that have either - * XIDs or data - ie any size-variable content. Currently the only records that - * do NOT use the tail are non-transactional dequeues and filler records. - * - * Record header info in binary format (12 bytes): - * <pre> - * 0 7 - * +---+---+---+---+---+---+---+---+ - * | ~(magic) | rid | - * +---+---+---+---+---+---+---+---+ - * | rid (con't) | - * +---+---+---+---+ - * </pre> - */ - struct rec_tail - { - u_int32_t _xmagic; ///< Binary inverse (1's complement) of hdr magic number - u_int64_t _rid; ///< ID (rotating 64-bit counter) - - - /** - * \brief Default constructor, which sets all values to 0. - */ - inline rec_tail(): _xmagic(0xffffffff), _rid(0) {} - - /** - * \brief Convenience constructor which initializes values during construction from - * existing enq_hdr instance. - */ - inline rec_tail(const rec_hdr& h): _xmagic(~h._magic), _rid(h._rid) {} - - /** - * \brief Convenience constructor which initializes values during construction. - */ - inline rec_tail(const u_int32_t xmagic, const u_int64_t rid): _xmagic(xmagic), _rid(rid) {} - - /** - * \brief Returns the size of the header in bytes. - */ - inline static std::size_t size() { return sizeof(rec_tail); } - }; - -#pragma pack() - -} // namespace journal -} // namespace mrg - -#endif // ifndef QPID_LEGACYSTORE_JRNL_REC_TAIL_H |