Release 0.5.0

• Fix returning MDBX_RESULT_TRUE from page_alloc().
• Fix false-positive ASAN issue.
• Fix assertion for MDBX_NOTLS option.
• Rework MADV_DONTNEED threshold.
• Fix mdbx_chk utility for don't checking some numbers if walking of B-tree was disabled.
• Use page's mp_txnid for basic integrity checking.
• Add MDBX_FORCE_ASSERTIONS built-time option.
• Rework MDBX_DBG_DUMP to avoid performance degradation.
• Rename MDBX_NOSYNC to MDBX_SAFE_NOSYNC for clarity.
• Interpret ERROR_ACCESS_DENIED from OpenProcess() as 'process exists'.
• Avoid using FILE_FLAG_NO_BUFFERING for compatibility with small database pages.
• Added install section for CMake.

Release 0.4.0

1. Support for Mac OSX, FreeBSD, NetBSD, OpenBSD, DragonFly BSD, OpenSolaris, OpenIndiana (AIX and HP-UX pending).
2. Use bootid for decisions of rollback.
3. Counting retired pages and extended transaction info.
4. MDBX_ACCEDE flag for database opening.
5. Using OFD-locks and tracking for in-process multi-opening.
6. Hot backup into pipe.
7. cmake & amalgamated sources.
8. Fastest internal sort implementation.
9. New internal dirty-list implementation with lazy sorting.
10. Support for lazy-sync-to-disk with polling.
11. Extended key length.
12. Last update transaction number for each sub-database.
13. Automatic read ahead enabling/disabling.
14. More auto-compactification.
15. -fsanitize=undefined and -Wpedantic.
16. Rework page merging.
17. Nested transactions.
18. API description.
19. Checking for non-local filesystems to avoid DB corruption.

0.2.0 2018-09-25

New features and Compatibility breaking:

1. Compatible with v0.1.x (stable/1.0 branch).
2. Identical database format for 32- and 64-bit builds.
3. Dynamically DB file size (growth/shrink) and custom page size via mdbx_env_set_geometry().
4. Support for Elbrus architecture.
5. Support for Windows XP and later (building by MSVC 2013 and later, but not by MinGW).
6. Support for MDBX_EXCLUSIVE mode, include network shares.
7. Support for large write transactions.
8. Extending mdbx_chk to verifing a inplaced sub-pages and accounting/statistics.
9. Incompatible with v0.0.x (stable/0.0 branch) and with original/obsolete LMDB.

Fixes since v0.1.x releases (stable/1.0 branch):

• major: fix corruption due LMDB-inherited rebalance bugs.
• major: fix accounting for sorted-duplicates tables.
• major: fix internal (LMDB-inherited and broken) audit.

Fixes since 0.1.5 2018-06-14:

• fix LMDB-inherited empty and unneeded large/overflow pages.
• fix LMDB-inherited cursor tracking bugs.
• fix MDBX_CORRUPTED due concurrent open/shrink collision.
• fix concurrent opening with custom pagesize.
• fix MDBX_EKEYMISMATCH while update multi-value with MDBX_CURRENT.
• linux: fix fallback2shared for mdbx_lck_exclusive().
• windows: fix truncation race while unmap().
• windows: fix nasty suspend_and_append() bug.
• tools: fix wrong 'bad sequence' messages from mdbx_stat.
• minor: doc fixes (ITS#8908 and ITS#8857).

Fixes since 0.1.4 2018-05-04:

• MAJOR: force steady-sync when shrinking DB.
• windows: disable non-blocking DB-close.
• minor: skip meta if usedbytes beyond EOF.
• minor: return MDBX_CORRUPTED instead of crash if MDBX_DUPSORT mismatch.

Fixes since 0.1.3 2018-04-03:

• MAJOR: fix wrong freeDB search.
• windows: fix lck_reader_alive_check().

Fixes since 0.1.2 2018-03-22:

• MAJOR: fix/rework rthc to avoid GNU libc ntpl bug.
• minor: fix cursor tracking inside mdbx_rebalance().
• minor: fix mdbx_cursor_put(MDBX_APPEND+MDBX_NOOVERWRITE) return MDBX_KEYEXIST instead of MDBX_EKEYMISMATCH.

Fixes since 0.1.1 2018-03-14:

• minor: fix/rework cache-line alignment.
• minor: fix unaligned access to mp_ptrs[] on fake-page.
• minor: lookup suitable txnid for rollback to avoid meta-pages clashes.
• tool: rework/fix read-write mode inside mdbx_chk.
• minor: fix minor memleak (Coverity).
• minor: add workaround for Elbrus's libc bug.

Fixes since 0.1.0 2018-03-07:

• minor: fix missing MDBX_DEVEL=1.

0.1.6 2018-09-23

New features and Compatibility breaking since stable/0.0:

1. Incompatible with v0.0.x (stable/0.0 branch) and with original/obsolete LMDB.
2. Identical database format for 32- and 64-bit builds.
3. Dynamically DB file size (growth/shrink) and mdbx_env_set_geometry().
4. Support for Elbrus architecture.
5. Support for Windows (2008 and later, MSVC 2013 and later).

Fixes since 0.1.5 2018-06-14:

• fix LMDB-inherited empty and unneeded large/overflow pages.
• fix LMDB-inherited cursor tracking bugs.
• fix MDBX_CORRUPTED due concurrent open/shrink collision.
• fix concurrent opening with custom pagesize.
• fix MDBX_EKEYMISMATCH while update multi-value with MDBX_CURRENT.
• linux: fix fallback2shared for mdbx_lck_exclusive().
• windows: fix truncation race while unmap().
• windows: fix nasty suspend_and_append() bug.
• tools: fix wrong 'bad sequence' messages from mdbx_stat.
• minor: doc fixes (ITS#8908 and ITS#8857).

Fixes since 0.1.4 2018-05-04:

• MAJOR: force steady-sync when shrinking DB.
• windows: disable non-blocking DB-close.
• minor: skip meta if usedbytes beyond EOF.
• minor: return MDBX_CORRUPTED instead of crash if MDBX_DUPSORT mismatch.

Fixes since 0.1.3 2018-04-03:

• MAJOR: fix wrong freeDB search.
• windows: fix lck_reader_alive_check().

Fixes since 0.1.2 2018-03-22:

• MAJOR: fix/rework rthc to avoid GNU libc ntpl bug.
• minor: fix cursor tracking inside mdbx_rebalance().
• minor: fix mdbx_cursor_put(MDBX_APPEND+MDBX_NOOVERWRITE) return MDBX_KEYEXIST instead of MDBX_EKEYMISMATCH.

Fixes since 0.1.1 2018-03-14:

• minor: fix/rework cache-line alignment.
• minor: fix unaligned access to mp_ptrs[] on fake-page.
• minor: lookup suitable txnid for rollback to avoid meta-pages clashes.
• tool: rework/fix read-write mode inside mdbx_chk.
• minor: fix minor memleak (Coverity).
• minor: add workaround for Elbrus's libc bug.

Fixes since 0.1.0 2018-03-07:

• minor: fix missing MDBX_DEVEL=1.

0.0.4 (Оbsolete, LMDB compatible) 2018-09-21

Release of the stable/0.0 branch, which contains legacy code that compatible to original LMDB API.

Corresponds to LMDB v0.9.22, but NOT includes all fixes from libmdbx mainstream, for instance this fix for cursor state after a deletion.

Changes since 0.0.2 2018-07-15:

• prevent DB corruption due LMDB-inherited rebalance bug (fixed in the master branch and 0.2.x).
• minor doc fixes (ITS#8908 and ITS#8857).

Changes since 0.0.2 2018-05-04:

• add fallthrough for modern GCC and CLang.
• add include <sys/sysmacros.h> for modern GNU libc.
• migrate to Circle-CI 2.0
• update Project Status in the README.

Fixes since 0.0.1 2017-08-12 (corresponds to LMDB v0.9.21):

• fix wrong freeDB search (LMDB still flawed).
• fix directly usage fakepage mp_ptrs[] (ITS#8819).
• fix regression (ITS#8760).
• fix FIRST_DUP/LAST_DUP cursor bounds check (ITS#8722).

Fixes since 0.0.0 2017-07-04:

• more for cursor_del() (ITS#8699, ITS#8622).
• fix extra madvise(MADV_REMOVE).
• fix mdbx_set_attr().

0.0.3 (Оbsolete, LMDB compatible) 2018-07-15

Release of the stable/0.0 branch, which contains legacy code that compatible to original LMDB API.

Corresponds to LMDB v0.9.22, but NOT includes all fixes from libmdbx mainstream, for instance this fix for cursor state after a deletion.

Changes since 0.0.2 2018-05-04:

• add fallthrough for modern GCC and CLang.
• add include <sys/sysmacros.h> for modern GNU libc.
• migrate to Circle-CI 2.0
• update Project Status in the README.

Fixes since 0.0.1 2017-08-12 (corresponds to LMDB v0.9.21):

• fix wrong freeDB search (LMDB still flawed).
• fix directly usage fakepage mp_ptrs[] (ITS#8819).
• fix regression (ITS#8760).
• fix FIRST_DUP/LAST_DUP cursor bounds check (ITS#8722).

Fixes since 0.0.0 2017-07-04:

• more for cursor_del() (ITS#8699, ITS#8622).
• fix extra madvise(MADV_REMOVE).
• fix mdbx_set_attr().

0.1.5 2018-06-14

New features and Compatibility breaking since stable0.0:

1. Incompatible with v0.0.x (stable/0.0 branch) and with original/obsolete LMDB.
2. Identical database format for 32- and 64-bit builds.
3. Dynamically DB file size (growth/shrink) and mdbx_env_set_geometry().
4. Support for Elbrus architecture.
5. Support for Windows (2008 and later, MSVC 2013 and later).

Fixes since 0.1.4 2018-05-04:

• MAJOR: force steady-sync when shrinking DB.
• windows: disable non-blocking DB-close.
• minor: skip meta if usedbytes beyond EOF.
• minor: return MDBX_CORRUPTED instead of crash if MDBX_DUPSORT mismatch.

Fixes since 0.1.3 2018-04-03:

• MAJOR: fix wrong freeDB search.
• windows: fix lck_reader_alive_check().

Fixes since 0.1.2 2018-03-22:

• MAJOR: fix/rework rthc to avoid GNU libc ntpl bug.
• minor: fix cursor tracking inside mdbx_rebalance().
• minor: fix mdbx_cursor_put(MDBX_APPEND+MDBX_NOOVERWRITE) return MDBX_KEYEXIST instead of MDBX_EKEYMISMATCH.

Fixes since 0.1.1 2018-03-14:

• minor: fix/rework cache-line alignment.
• minor: fix unaligned access to mp_ptrs[] on fake-page.
• minor: lookup suitable txnid for rollback to avoid meta-pages clashes.
• tool: rework/fix read-write mode inside mdbx_chk.
• minor: fix minor memleak (Coverity).
• minor: add workaround for Elbrus's libc bug.

Fixes since 0.1.0 2018-03-07:

• minor: fix missing MDBX_DEVEL=1.

0.1.4 2018-05-04

New features and Compatibility breaking since stable0.0:

1. Incompatible with v0.0.x (stable/0.0 branch) and with original/obsolete LMDB.
2. Identical database format for 32- and 64-bit builds.
3. Dynamically DB file size (growth/shrink) and mdbx_env_set_geometry().
4. Support for Elbrus architecture.
5. Support for Windows (2008 and later, MSVC 2013 and later).

Fixes since 0.1.3 2018-04-03:

• MAJOR: fix wrong freeDB search.
• windows: fix lck_reader_alive_check().

Fixes since 0.1.2 2018-03-22:

• MAJOR: fix/rework rthc to avoid GNU libc ntpl bug.
• minor: fix cursor tracking inside mdbx_rebalance().
• minor: fix mdbx_cursor_put(MDBX_APPEND+MDBX_NOOVERWRITE) return MDBX_KEYEXIST instead of MDBX_EKEYMISMATCH.

Fixes since 0.1.1 2018-03-14:

• minor: fix/rework cache-line alignment.
• minor: fix unaligned access to mp_ptrs[] on fake-page.
• minor: lookup suitable txnid for rollback to avoid meta-pages clashes.
• tool: rework/fix read-write mode inside mdbx_chk.
• minor: fix minor memleak (Coverity).
• minor: add workaround for Elbrus's libc bug.

Fixes since 0.1.0 2018-03-07:

• minor: fix missing MDBX_DEVEL=1.

0.0.2 2018-05-04

Release of the stable/0.0 branch, which contains legacy code that compatible to original LMDB API.

Corresponds to LMDB v0.9.22, but NOT includes all fixes from libmdbx mainstream, for instance this fix for cursor state after a deletion.

Fixes since 0.0.1 2017-08-12 (corresponds to LMDB v0.9.21):

• fix wrong freeDB search (LMDB still flawed).
• fix directly usage fakepage mp_ptrs[] (ITS#8819).
• fix regression (ITS#8760).
• fix FIRST_DUP/LAST_DUP cursor bounds check (ITS#8722).

Fixes since 0.0.0 2017-07-04:

• more for cursor_del() (ITS#8699, ITS#8622).
• fix extra madvise(MADV_REMOVE).
• fix mdbx_set_attr().

0.1.3 2018-04-03

New features and Compatibility breaking since stable0.0:

1. Incompatible with v0.0.x (stable/0.0 branch) and with original/obsolete LMDB.
2. Identical database format for 32- and 64-bit builds.
3. Dynamically DB file size (growth/shrink) and mdbx_env_set_geometry().
4. Support for Elbrus architecture.
5. Support for Windows (2008 and later, MSVC 2013 and later).

Fixes since 0.1.2 2018-03-22:

• MAJOR: fix/rework rthc to avoid GNU libc ntpl bug.
• minor: fix cursor tracking inside mdbx_rebalance().
• minor: fix mdbx_cursor_put(MDBX_APPEND+MDBX_NOOVERWRITE) return MDBX_KEYEXIST instead of MDBX_EKEYMISMATCH.

Fixes since 0.1.1 2018-03-14:

• minor: fix/rework cache-line alignment.
• minor: fix unaligned access to mp_ptrs[] on fake-page.
• minor: lookup suitable txnid for rollback to avoid meta-pages clashes.
• tool: rework/fix read-write mode inside mdbx_chk.
• minor: fix minor memleak (Coverity).
• minor: add workaround for Elbrus's libc bug.

Fixes since 0.1.0 2018-03-07:

• minor: fix missing MDBX_DEVEL=1.