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mdbx: move boot-id from LCK to meta.

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Change-Id: I7a371feb1a2c43e3606c516fe7b4c7d7a4ff6e73
This commit is contained in:
Leonid Yuriev
2019-11-17 23:41:14 +03:00
parent dc03299dc6
commit d20b9d9ed7
3 changed files with 112 additions and 93 deletions
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23
mdbx.h
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@@ -1657,16 +1657,19 @@ typedef struct MDBX_envinfo {
uint32_t mi_dxb_pagesize; /* database pagesize */
uint32_t mi_sys_pagesize; /* system pagesize */
uint64_t
mi_bootid[2]; /* A mostly unique ID that is regenerated on each boot.
As such it can be used to identify the local
machine's current boot. MDBX uses such when open
the database to determine whether rollback required
to the last steady sync point or not. I.e. if current
bootid is differ from the value within a database then
the system was rebooted and all changes since last steady
sync must be reverted for data integrity. Zeros mean that
no relevant information is available from the system. */
struct {
/* A mostly unique ID that is regenerated on each boot. As such it can be
used to identify the local machine's current boot. MDBX uses such when
open the database to determine whether rollback required to the last
steady sync point or not. I.e. if current bootid is differ from the value
within a database then the system was rebooted and all changes since last
steady sync must be reverted for data integrity. Zeros mean that no
relevant information is available from the system. */
struct {
uint64_t l, h;
} current, meta0, meta1, meta2;
} mi_bootid;
uint64_t mi_unsync_volume; /* bytes not explicitly synchronized to disk */
uint64_t mi_autosync_threshold; /* current auto-sync threshold, see
mdbx_env_set_syncbytes(). */