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| author | Howard Chu <hyc@symas.com> | 2017-08-12 12:21:25 +0100 |
|---|---|---|
| committer | Howard Chu <hyc@symas.com> | 2017-08-12 12:21:25 +0100 |
| commit | 9c6eb75c656363176a55c63c81803feb3cfa614d (patch) | |
| tree | b46956d659a9047b4d0730081fff4ca3cd6c3ca8 /external/db_drivers/liblmdb/lmdb.h | |
| parent | Merge pull request #2263 (diff) | |
| download | monero-9c6eb75c656363176a55c63c81803feb3cfa614d.tar.xz | |
ITS#8704 add MDB_PREVSNAPSHOT flag to mdb_env_open
used to open the previous snapshot, in case the latest one
is corrupted
Diffstat (limited to 'external/db_drivers/liblmdb/lmdb.h')
| -rw-r--r-- | external/db_drivers/liblmdb/lmdb.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/external/db_drivers/liblmdb/lmdb.h b/external/db_drivers/liblmdb/lmdb.h index a794c9f7d..0bca3eb74 100644 --- a/external/db_drivers/liblmdb/lmdb.h +++ b/external/db_drivers/liblmdb/lmdb.h @@ -311,6 +311,8 @@ typedef void (MDB_rel_func)(MDB_val *item, void *oldptr, void *newptr, void *rel #define MDB_NORDAHEAD 0x800000 /** don't initialize malloc'd memory before writing to datafile */ #define MDB_NOMEMINIT 0x1000000 + /** use the previous snapshot rather than the latest one */ +#define MDB_PREVSNAPSHOT 0x2000000 /** @} */ /** @defgroup mdb_dbi_open Database Flags @@ -622,6 +624,12 @@ int mdb_env_create(MDB_env **env); * caller is expected to overwrite all of the memory that was * reserved in that case. * This flag may be changed at any time using #mdb_env_set_flags(). + * <li>#MDB_PREVSNAPSHOT + * Open the environment with the previous snapshot rather than the latest + * one. This loses the latest transaction, but may help work around some + * types of corruption. If opened with write access, this must be the + * only process using the environment. This flag is automatically reset + * after a write transaction is successfully committed. * </ul> * @param[in] mode The UNIX permissions to set on created files and semaphores. * This parameter is ignored on Windows. |