diff options
Diffstat (limited to 'qpid/cpp/src/qpid/linearstore/journal/jcfg.h')
| -rw-r--r-- | qpid/cpp/src/qpid/linearstore/journal/jcfg.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/linearstore/journal/jcfg.h b/qpid/cpp/src/qpid/linearstore/journal/jcfg.h new file mode 100644 index 0000000000..b33a419a9d --- /dev/null +++ b/qpid/cpp/src/qpid/linearstore/journal/jcfg.h @@ -0,0 +1,72 @@ +/* + * + * 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. + * + */ + +#include <cmath> +#include <cstdlib> + +#ifndef QPID_QLS_JRNL_JCFG_H +#define QPID_QLS_JRNL_JCFG_H + +#define QLS_SBLK_SIZE_BYTES 4096 /**< Disk softblock size in bytes, should match size used on disk media */ +#define QLS_AIO_ALIGN_BOUNDARY_BYTES QLS_SBLK_SIZE_BYTES /** Memory alignment boundary used for DMA */ +/** +* <b>Rule:</b> Data block size (QLS_DBLK_SIZE_BYTES) MUST be a power of 2 AND +* a power of 2 factor of the disk softblock size (QLS_SBLK_SIZE_BYTES): +* <pre> +* n * QLS_DBLK_SIZE_BYTES == QLS_SBLK_SIZE_BYTES (n = 1,2,4,8...) +* </pre> +*/ +#define QLS_DBLK_SIZE_BYTES 128 /**< Data block size in bytes (CANNOT BE LESS THAN 32!) */ +#define QLS_SBLK_SIZE_DBLKS (QLS_SBLK_SIZE_BYTES / QLS_DBLK_SIZE_BYTES) /**< Disk softblock size in multiples of QLS_DBLK_SIZE_BYTES */ +#define QLS_SBLK_SIZE_KIB (QLS_SBLK_SIZE_BYTES / 1024) /**< Disk softblock size in KiB */ + +#define QLS_WMGR_DEF_PAGE_SIZE_KIB 32 /**< Journal write page size in KiB (default) */ +#define QLS_WMGR_DEF_PAGE_SIZE_SBLKS (QLS_WMGR_DEF_PAGE_SIZE_KIB / QLS_SBLK_SIZE_KIB) /**< Journal write page size in softblocks (default) */ +#define QLS_WMGR_DEF_PAGES 32 /**< Number of pages to use in wmgr (default) */ + +#define QLS_WMGR_MAXDTOKPP 1024 /**< Max. dtoks (data blocks) per page in wmgr */ +#define QLS_WMGR_MAXWAITUS 100 /**< Max. wait time (us) before submitting AIO */ + +#define QLS_JRNL_FILE_EXTENSION ".jrnl" /**< Extension for journal data files */ +#define QLS_TXA_MAGIC 0x61534c51 /**< ("QLSa" in little endian) Magic for dtx abort hdrs */ +#define QLS_TXC_MAGIC 0x63534c51 /**< ("QLSc" in little endian) Magic for dtx commit hdrs */ +#define QLS_DEQ_MAGIC 0x64534c51 /**< ("QLSd" in little endian) Magic for deq rec hdrs */ +#define QLS_ENQ_MAGIC 0x65534c51 /**< ("QLSe" in little endian) Magic for enq rec hdrs */ +#define QLS_FILE_MAGIC 0x66534c51 /**< ("QLSf" in little endian) Magic for file hdrs */ +#define QLS_EMPTY_MAGIC 0x78534c51 /**< ("QLSx" in little endian) Magic for empty dblk */ +#define QLS_JRNL_VERSION 2 /**< Version (of file layout) */ +#define QLS_JRNL_FHDR_RES_SIZE_SBLKS 1 /**< Journal file header reserved size in sblks (as defined by QLS_SBLK_SIZE_BYTES) */ +#define QLS_MAX_QUEUE_NAME_LEN (QLS_JRNL_FHDR_RES_SIZE_SBLKS * QLS_SBLK_SIZE_BYTES) - sizeof(file_hdr_t) + +#define QLS_CLEAN /**< If defined, writes QLS_CLEAN_CHAR to all filled areas on disk */ +#define QLS_CLEAN_CHAR 0xff /**< Char used to clear empty space on disk */ + +namespace qpid { +namespace linearstore { + + const int QLS_RAND_WIDTH = (int)(::log((RAND_MAX + 1ULL))/::log(2)); + const int QLS_RAND_SHIFT1 = 64 - QLS_RAND_WIDTH; + const int QLS_RAND_SHIFT2 = QLS_RAND_SHIFT1 - QLS_RAND_WIDTH; + const int QLS_RAND_MASK = (int)::pow(2, QLS_RAND_SHIFT2) - 1; + +}} + +#endif /* ifndef QPID_QLS_JRNL_JCFG_H */ |