From 4d7c9e5bca70e08166cba3711df17a4f4e479cda Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Thu, 18 Jul 2013 09:11:09 -0700 Subject: [PATCH] Split MDB_VERSION to MDB_DATA/MDB_LOCK VERSION --- libraries/liblmdb/mdb.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c index 91007a187e..5d08b42d9c 100644 --- a/libraries/liblmdb/mdb.c +++ b/libraries/liblmdb/mdb.c @@ -344,8 +344,10 @@ static txnid_t mdb_debug_start; */ #define MDB_MAGIC 0xBEEFC0DE - /** The version number for a database's file format. */ -#define MDB_VERSION 1 + /** The version number for a database's datafile format. */ +#define MDB_DATA_VERSION 1 + /** The version number for a database's lockfile format. */ +#define MDB_LOCK_VERSION 1 /** @brief The maximum size of a key in the database. * @@ -513,7 +515,7 @@ typedef struct MDB_txbody { /** Stamp identifying this as an MDB file. It must be set * to #MDB_MAGIC. */ uint32_t mtb_magic; - /** Version number of this lock file. Must be set to #MDB_VERSION. */ + /** Version number of this lock file. Must be set to #MDB_LOCK_VERSION. */ uint32_t mtb_version; #if defined(_WIN32) || defined(MDB_USE_POSIX_SEM) char mtb_rmname[MNAME_LEN]; @@ -770,7 +772,7 @@ typedef struct MDB_meta { /** Stamp identifying this as an MDB file. It must be set * to #MDB_MAGIC. */ uint32_t mm_magic; - /** Version number of this lock file. Must be set to #MDB_VERSION. */ + /** Version number of this lock file. Must be set to #MDB_DATA_VERSION. */ uint32_t mm_version; void *mm_address; /**< address for fixed mapping */ size_t mm_mapsize; /**< size of mmap region */ @@ -2862,9 +2864,9 @@ mdb_env_read_header(MDB_env *env, MDB_meta *meta) return MDB_INVALID; } - if (m->mm_version != MDB_VERSION) { + if (m->mm_version != MDB_DATA_VERSION) { DPRINTF("database is version %u, expected version %u", - m->mm_version, MDB_VERSION); + m->mm_version, MDB_DATA_VERSION); return MDB_VERSION_MISMATCH; } @@ -2891,7 +2893,7 @@ mdb_env_init_meta(MDB_env *env, MDB_meta *meta) GET_PAGESIZE(psize); meta->mm_magic = MDB_MAGIC; - meta->mm_version = MDB_VERSION; + meta->mm_version = MDB_DATA_VERSION; meta->mm_mapsize = env->me_mapsize; meta->mm_psize = psize; meta->mm_last_pg = 1; @@ -3652,7 +3654,7 @@ mdb_env_setup_locks(MDB_env *env, char *lpath, int mode, int *excl) pthread_mutexattr_destroy(&mattr); #endif /* _WIN32 || MDB_USE_POSIX_SEM */ - env->me_txns->mti_version = MDB_VERSION; + env->me_txns->mti_version = MDB_LOCK_VERSION; env->me_txns->mti_magic = MDB_MAGIC; env->me_txns->mti_txnid = 0; env->me_txns->mti_numreaders = 0; @@ -3663,9 +3665,9 @@ mdb_env_setup_locks(MDB_env *env, char *lpath, int mode, int *excl) rc = MDB_INVALID; goto fail; } - if (env->me_txns->mti_version != MDB_VERSION) { + if (env->me_txns->mti_version != MDB_LOCK_VERSION) { DPRINTF("lock region is version %u, expected version %u", - env->me_txns->mti_version, MDB_VERSION); + env->me_txns->mti_version, MDB_LOCK_VERSION); rc = MDB_VERSION_MISMATCH; goto fail; } -- 2.39.5