| /* |
| * |
| * 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 jcfg.h |
| * |
| * Qpid asynchronous store plugin library |
| * |
| * This file contains \#defines that control the implementation details of |
| * the journal. |
| * |
| * \author Kim van der Riet |
| */ |
| |
| #ifndef QPID_LEGACYSTORE_JRNL_JCFG_H |
| #define QPID_LEGACYSTORE_JRNL_JCFG_H |
| |
| #if defined(__i386__) || (__arm__) /* little endian, 32 bits */ |
| #define JRNL_LITTLE_ENDIAN |
| #define JRNL_32_BIT |
| #elif defined(__PPC__) || defined(__s390__) /* big endian, 32 bits */ |
| #define JRNL_BIG_ENDIAN |
| #define JRNL_32_BIT |
| #elif defined(__ia64__) || defined(__x86_64__) || defined(__alpha__) || (__arm64__) /* little endian, 64 bits */ |
| #define JRNL_LITTLE_ENDIAN |
| #define JRNL_64_BIT |
| #elif defined(__powerpc64__) || defined(__s390x__) /* big endian, 64 bits */ |
| #define JRNL_BIG_ENDIAN |
| #define JRNL_64_BIT |
| #else |
| #error endian? |
| #endif |
| |
| |
| /** |
| * <b>Rule:</b> Data block size (JRNL_DBLK_SIZE) MUST be a power of 2 such that |
| * <pre> |
| * JRNL_DBLK_SIZE * JRNL_SBLK_SIZE == n * 512 (n = 1,2,3...) |
| * </pre> |
| * (The disk softblock size is 512 for Linux kernels >= 2.6) |
| */ |
| #define JRNL_DBLK_SIZE 128 ///< Data block size in bytes (CANNOT BE LESS THAN 32!) |
| #define JRNL_SBLK_SIZE 4 ///< Disk softblock size in multiples of JRNL_DBLK_SIZE |
| #define JRNL_MIN_FILE_SIZE 128 ///< Min. jrnl file size in sblks (excl. file_hdr) |
| #define JRNL_MAX_FILE_SIZE 4194176 ///< Max. jrnl file size in sblks (excl. file_hdr) |
| #define JRNL_MIN_NUM_FILES 4 ///< Min. number of journal files |
| #define JRNL_MAX_NUM_FILES 64 ///< Max. number of journal files |
| #define JRNL_ENQ_THRESHOLD 80 ///< Percent full when enqueue connection will be closed |
| |
| #define JRNL_RMGR_PAGE_SIZE 128 ///< Journal page size in softblocks |
| #define JRNL_RMGR_PAGES 16 ///< Number of pages to use in wmgr |
| |
| #define JRNL_WMGR_DEF_PAGE_SIZE 64 ///< Journal write page size in softblocks (default) |
| #define JRNL_WMGR_DEF_PAGES 32 ///< Number of pages to use in wmgr (default) |
| |
| #define JRNL_WMGR_MAXDTOKPP 1024 ///< Max. dtoks (data blocks) per page in wmgr |
| #define JRNL_WMGR_MAXWAITUS 100 ///< Max. wait time (us) before submitting AIO |
| |
| #define JRNL_INFO_EXTENSION "jinf" ///< Extension for journal info files |
| #define JRNL_DATA_EXTENSION "jdat" ///< Extension for journal data files |
| #define RHM_JDAT_TXA_MAGIC 0x614d4852 ///< ("RHMa" in little endian) Magic for dtx abort hdrs |
| #define RHM_JDAT_TXC_MAGIC 0x634d4852 ///< ("RHMc" in little endian) Magic for dtx commit hdrs |
| #define RHM_JDAT_DEQ_MAGIC 0x644d4852 ///< ("RHMd" in little endian) Magic for deq rec hdrs |
| #define RHM_JDAT_ENQ_MAGIC 0x654d4852 ///< ("RHMe" in little endian) Magic for enq rec hdrs |
| #define RHM_JDAT_FILE_MAGIC 0x664d4852 ///< ("RHMf" in little endian) Magic for file hdrs |
| #define RHM_JDAT_EMPTY_MAGIC 0x784d4852 ///< ("RHMx" in little endian) Magic for empty dblk |
| #define RHM_JDAT_VERSION 0x01 ///< Version (of file layout) |
| #define RHM_CLEAN_CHAR 0xff ///< Char used to clear empty space on disk |
| |
| #define RHM_LENDIAN_FLAG 0 ///< Value of little endian flag on disk |
| #define RHM_BENDIAN_FLAG 1 ///< Value of big endian flag on disk |
| |
| #endif // ifndef QPID_LEGACYSTORE_JRNL_JCFG_H |