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Diffstat (limited to 'qpid/cpp/src/qpid/linearstore/journal/enq_rec.h')
-rw-r--r-- | qpid/cpp/src/qpid/linearstore/journal/enq_rec.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/linearstore/journal/enq_rec.h b/qpid/cpp/src/qpid/linearstore/journal/enq_rec.h new file mode 100644 index 0000000000..d85cde42f5 --- /dev/null +++ b/qpid/cpp/src/qpid/linearstore/journal/enq_rec.h @@ -0,0 +1,74 @@ +/* + * + * 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_ENQ_REC_H +#define QPID_LINEARSTORE_JOURNAL_ENQ_REC_H + +#include "qpid/linearstore/journal/jrec.h" +#include "qpid/linearstore/journal/utils/enq_hdr.h" +#include "qpid/linearstore/journal/utils/rec_tail.h" + +namespace qpid { +namespace linearstore { +namespace journal { + +/** +* \class enq_rec +* \brief Class to handle a single journal enqueue record. +*/ +class enq_rec : public jrec +{ +private: + ::enq_hdr_t _enq_hdr; ///< Local instance of enqueue header struct + const void* _xidp; ///< xid pointer for encoding (for writing to disk) + const void* _data; ///< Pointer to data to be written to disk + void* _xid_buff; + void* _data_buff; + ::rec_tail_t _enq_tail; ///< Local instance of enqueue tail struct + +public: + enq_rec(); + virtual ~enq_rec(); + + void reset(const uint64_t serial, const uint64_t rid, const void* const dbuf, const std::size_t dlen, + const void* const xidp, const std::size_t xidlen, const bool transient, const bool external); + uint32_t encode(void* wptr, uint32_t rec_offs_dblks, uint32_t max_size_dblks, Checksum& checksum); + bool decode(::rec_hdr_t& h, std::ifstream* ifsp, std::size_t& rec_offs, const std::streampos rec_start); + + std::size_t get_xid(void** const xidpp); + std::size_t get_data(void** const datapp); + inline bool is_transient() const { return ::is_enq_transient(&_enq_hdr); } + inline bool is_external() const { return ::is_enq_external(&_enq_hdr); } + std::string& str(std::string& str) const; + inline std::size_t data_size() const { return _enq_hdr._dsize; } + inline std::size_t xid_size() const { return _enq_hdr._xidsize; } + std::size_t rec_size() const; + static std::size_t rec_size(const std::size_t xidsize, const std::size_t dsize, const bool external); + inline uint64_t rid() const { return _enq_hdr._rhdr._rid; } + void check_rec_tail(const std::streampos rec_start) const; + +private: + virtual void clean(); +}; + +}}} + +#endif // ifndef QPID_LINEARSTORE_JOURNAL_ENQ_REC_H |