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Change-Id: I86116c2bada268d6e0a5c97deff808aaffe3e599
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14 KiB
ChangeLog
v0.9.3 (in development)
- Engage new terminology (https://github.com/erthink/libmdbx/issues/137).
- Rework/speedup the implementation of the dirty page list (lazy compactification, lazy sorting via merge).
- Resolve few TODOs (https://github.com/erthink/libmdbx/issues/123, https://github.com/erthink/libmdbx/issues/124, https://github.com/erthink/libmdbx/issues/127, https://github.com/erthink/libmdbx/issues/128, https://github.com/erthink/libmdbx/issues/132, https://github.com/erthink/libmdbx/issues/115).
- Finalize C++ API (few typos and trivia bugs are still likely for now).
- Packages for ROSA Linux, ALT Linux, Fedora/RHEL, Debian/Ubuntu.
Removed options and features:
- Drop
MDBX_HUGE_TRANSACTIONS
build-option (now no longer required).
v0.9.2 scheduled at 2020-11-27
Acknowledgements:
- Jens Alfke (Mobile Architect at Couchbase) for NimDBX.
- Clément Renault (CTO at MeiliSearch) for mdbx-rs.
- Alex Sharov (Go-Lang Teach Lead at TurboGeth/Ethereum) for an extreme test cases and bug reporting.
- George Hazan (CTO at Miranda NG) for bug reporting.
- Positive Technologies for funding and The Standoff.
Added features:
- Provided package for buildroot.
- Binding for Nim is available now by Jens Alfke.
- Added
mdbx_env_delete()
for deletion an environment files in a proper and multiprocess-safe way. - Added
mdbx_txn_commit_ex()
with collecting latency information. - Fast completion pure nested transactions.
- Added
LIBMDBX_INLINE_API
macro and inline versions of some API functions. - Added
mdbx_cursor_copy()
function. - Extended tests for checking cursor tracking.
- Added
MDBX_SET_LOWERBOUND
operation formdbx_cursor_get()
.
Fixes:
- Fixed missing installation of
mdbx.h++
. - Fixed use of obsolete
__noreturn
. - Fixed use of
yield
instruction on ARM if unsupported. - Added pthread workaround for buggy toolchain/cmake/buildroot.
- Fixed use of
pthread_yield()
for non-GLIBC. - Fixed use of
RegGetValueA()
on Windows 2000/XP. - Fixed use of
GetTickCount64()
on Windows 2000/XP. - Fixed opening DB on a network shares (in the exclusive mode).
- Fixed copy&paste typos.
- Fixed minor false-positive GCC warning.
- Added workaround for broken
DEFINE_ENUM_FLAG_OPERATORS
from Windows SDK. - Fixed cursor state after multimap/dupsort repeated deletes (https://github.com/erthink/libmdbx/issues/121).
- Added
SIGPIPE
suppression for internal thread duringmdbx_env_copy()
. - Fixed extra-rare
MDBX_KEY_EXIST
error duringmdbx_commit()
(https://github.com/erthink/libmdbx/issues/131). - Fixed spilled pages checking (https://github.com/erthink/libmdbx/issues/126).
- Fixed
mdbx_load
for 'plain text' and without-s name
cases (https://github.com/erthink/libmdbx/issues/136). - Fixed save/restore/commit of cursors for nested transactions.
- Fixed cursors state in rare/special cases (move next beyond end-of-data, after deletion and so on).
- Added workaround for MSVC 19.28 (Visual Studio 16.8) (but may still hang during compilation).
- Fixed paranoidal Clang C++ UB for bitwise operations with flags defined by enums.
- Fixed large pages checking (for compatibility and to avoid false-positive errors from
mdbx_chk
). - Added workaround for Wine (https://github.com/miranda-ng/miranda-ng/issues/1209).
- Fixed
ERROR_NOT_SUPPORTED
while opening DB by UNC pathnames (https://github.com/miranda-ng/miranda-ng/issues/2627). - Added handling
EXCEPTION_POSSIBLE_DEADLOCK
condition for Windows.
v0.9.1 2020-09-30
Added features:
- Preliminary C++ API with support for C++17 polymorphic allocators.
- Online C++ API reference by Doxygen.
- Quick reference for Insert/Update/Delete operations.
- Explicit
MDBX_SYNC_DURABLE
to sync modes for API clarity. - Explicit
MDBX_ALLDUPS
andMDBX_UPSERT
for API clarity. - Support for read transactions preparation (
MDBX_TXN_RDONLY_PREPARE
flag). - Support for cursor preparation/(pre)allocation and reusing (
mdbx_cursor_create()
andmdbx_cursor_bind()
functions). - Support for checking database using specified meta-page (see
mdbx_chk -h
). - Support for turn to the specific meta-page after checking (see
mdbx_chk -h
). - Support for explicit reader threads (de)registration.
- The
mdbx_txn_break()
function to explicitly mark a transaction as broken. - Improved handling of corrupted databases by
mdbx_chk
utility andmdbx_walk_tree()
function. - Improved DB corruption detection by checking parent-page-txnid.
- Improved opening large DB (> 4Gb) from 32-bit code.
- Provided
pure-function
andconst-function
attributes to C API. - Support for user-settable context for transactions & cursors.
- Revised API and documentation related to Handle-Slow-Readers callback feature.
Deprecated functions and flags:
- For clarity and API simplification the
MDBX_MAPASYNC
flag is deprecated. Just useMDBX_SAFE_NOSYNC
orMDBX_UTTERLY_NOSYNC
instead of it. MDBX_oom_func
,mdbx_env_set_oomfunc()
andmdbx_env_get_oomfunc()
replaced withMDBX_hsr_func
,mdbx_env_get_hsr
andmdbx_env_get_hsr()
.
Fixes:
- Fix
mdbx_strerror()
forMDBX_BUSY
error (no error description is returned). - Fix update internal meta-geo information in read-only mode (
EACCESS
orEBADFD
error). - Fix
mdbx_page_get()
null-defer when DB corrupted (crash bySIGSEGV
). - Fix
mdbx_env_open()
for re-opening after non-fatal errors (mdbx_chk
unexpected failures). - Workaround for MSVC 19.27
static_assert()
bug. - Doxygen descriptions and refinement.
- Update Valgrind's suppressions.
- Workaround to avoid infinite loop of 'nested' testcase on MIPS under QEMU.
- Fix a lot of typos & spelling (Thanks to Josh Soref for PR).
- Fix
getopt()
messages for Windows (Thanks to Andrey Sporaw for reporting). - Fix MSVC compiler version requirements (Thanks to Andrey Sporaw for reporting).
- Workarounds for QEMU's bugs to run tests for cross-builded library under QEMU.
- Now C++ compiler optional for building by CMake.
v0.9.0 2020-07-31 (not a release, but API changes)
Added features:
- Online C API reference by Doxygen.
- Separated enums for environment, sub-databases, transactions, copying and data-update flags.
Deprecated functions and flags:
- Usage of custom comparators and the
mdbx_dbi_open_ex()
are deprecated, since such databases couldn't be checked by themdbx_chk
utility. Please use the value-to-key functions to provide keys that are compatible with the built-in libmdbx comparators.
v0.8.2 2020-07-06
- Added support multi-opening the same DB in a process with SysV locking (BSD).
- Fixed warnings & minors for LCC compiler (E2K).
- Enabled to simultaneously open the same database from processes with and without the
MDBX_WRITEMAP
option. - Added key-to-value,
mdbx_get_keycmp()
andmdbx_get_datacmp()
functions (helpful to avoid using custom comparators). - Added
ENABLE_UBSAN
CMake option to enabling the UndefinedBehaviorSanitizer from GCC/CLANG. - Workaround for CLANG bug.
- Returning
MDBX_CORRUPTED
in case all meta-pages are weak and no other error. - Refined mode bits while auto-creating LCK-file.
- Avoids unnecessary database file re-mapping in case geometry changed by another process(es).
From the user's point of view, the
MDBX_UNABLE_EXTEND_MAPSIZE
error will now be returned less frequently and only when using the DB in the current process really requires it to be reopened. - Remapping on-the-fly and of the database file was implemented. Now remapping with a change of address is performed automatically if there are no dependent readers in the current process.
v0.8.1 2020-06-12
- Minor change versioning. The last number in the version now means the number of commits since last release/tag.
- Provide ChangeLog file.
- Fix for using libmdbx as a C-only sub-project with CMake.
- Fix
mdbx_env_set_geometry()
for case it is called from an opened environment outside of a write transaction. - Add support for huge transactions and
MDBX_HUGE_TRANSACTIONS
build-option (defaultOFF
). - Refine LTO (link time optimization) for clang.
- Force enabling exceptions handling for MSVC (
/EHsc
option).
v0.8.0 2020-06-05
- Support for Android/Bionic.
- Support for iOS.
- Auto-handling
MDBX_NOSUBDIR
while opening for any existing database. - Engage github-actions to make release-assets.
- Clarify API description.
- Extended keygen-cases in stochastic test.
- Fix fetching of first/lower key from LEAF2-page during page merge.
- Fix missing comma in array of error messages.
- Fix div-by-zero while copy-with-compaction for non-resizable environments.
- Fixes & enhancements for custom-comparators.
- Fix
MDBX_AVOID_CRT
option and missingntdll.def
. - Fix
mdbx_env_close()
to work correctly called concurrently from several threads. - Fix null-deref in an ASAN-enabled builds while opening the environment with error and/or read-only.
- Fix AddressSanitizer errors after closing the environment.
- Fix/workaround to avoid GCC 10.x pedantic warnings.
- Fix using
ENODATA
for FreeBSD. - Avoid invalidation of DBI-handle(s) when it just closes.
- Avoid using
pwritev()
for single-writes (up to 10% speedup for some kernels & scenarios). - Avoiding
MDBX_UTTERLY_NOSYNC
as result of flags merge. - Add
mdbx_dbi_dupsort_depthmask()
function. - Add
MDBX_CP_FORCE_RESIZEABLE
option. - Add deprecated
MDBX_MAP_RESIZED
for compatibility. - Add
MDBX_BUILD_TOOLS
option (defaultON
). - Refine
mdbx_dbi_open_ex()
to safe concurrently opening the same handle from different threads. - Truncate clk-file during environment closing. So a zero-length lck-file indicates that the environment was closed properly.
- Refine
mdbx_update_gc()
for huge transactions with small sizes of database page. - Extends dump/load to support all MDBX attributes.
- Avoid upsertion the same key-value data, fix related assertions.
- Rework min/max length checking for keys & values.
- Checking the order of keys on all pages during checking.
- Support
CFLAGS_EXTRA
make-option for convenience. - Preserve the last txnid while copying with compactification.
- Auto-reset running transaction in mdbx_txn_renew().
- Automatically abort errored transaction in mdbx_txn_commit().
- Auto-choose page size for large databases.
- Rearrange source files, rework build, options-support by CMake.
- Crutch for WSL1 (Windows subsystem for Linux).
- Refine install/uninstall targets.
- Support for Valgrind 3.14 and later.
- Add check-analyzer check-ubsan check-asan check-leak targets to Makefile.
- Minor fix/workaround to avoid UBSAN traps for
memcpy(ptr, NULL, 0)
. - Avoid some GCC-analyzer false-positive warnings.
v0.7.0 2020-03-18
- Workarounds for Wine (Windows compatibility layer for Linux).
MDBX_MAP_RESIZED
renamed toMDBX_UNABLE_EXTEND_MAPSIZE
.- Clarify API description, fix typos.
- Speedup runtime checks in debug/checked builds.
- Added checking for read/write transactions overlapping for the same thread, added
MDBX_TXN_OVERLAPPING
error andMDBX_DBG_LEGACY_OVERLAP
option. - Added
mdbx_key_from_jsonInteger()
,mdbx_key_from_double()
,mdbx_key_from_float()
,mdbx_key_from_int64()
andmdbx_key_from_int32()
functions. Seemdbx.h
for description. - Fix compatibility (use zero for invalid DBI).
- Refine/clarify error messages.
- Avoids extra error messages "bad txn" from mdbx_chk when DB is corrupted.
v0.6.0 2020-01-21
- Fix
mdbx_load
utility for custom comparators. - Fix checks related to
MDBX_APPEND
flag insidemdbx_cursor_put()
. - Refine/fix dbi_bind() internals.
- Refine/fix handling
STATUS_CONFLICTING_ADDRESSES
. - Rework
MDBX_DBG_DUMP
option to avoid disk I/O performance degradation. - Add built-in help to test tool.
- Fix
mdbx_env_set_geometry()
for large page size. - Fix env_set_geometry() for large pagesize.
- Clarify API description & comments, fix typos.
v0.5.0 2019-12-31
- 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 on the 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
toMDBX_SAFE_NOSYNC
for clarity. - Interpret
ERROR_ACCESS_DENIED
fromOpenProcess()
as 'process exists'. - Avoid using
FILE_FLAG_NO_BUFFERING
for compatibility with small database pages. - Added install section for CMake.
v0.4.0 2019-12-02
- Support for Mac OSX, FreeBSD, NetBSD, OpenBSD, DragonFly BSD, OpenSolaris, OpenIndiana (AIX and HP-UX pending).
- Use bootid for decisions of rollback.
- Counting retired pages and extended transaction info.
- Add
MDBX_ACCEDE
flag for database opening. - Using OFD-locks and tracking for in-process multi-opening.
- Hot backup into pipe.
- Support for cmake & amalgamated sources.
- Fastest internal sort implementation.
- New internal dirty-list implementation with lazy sorting.
- Support for lazy-sync-to-disk with polling.
- Extended key length.
- Last update transaction number for each sub-database.
- Automatic read ahead enabling/disabling.
- More auto-compactification.
- Using -fsanitize=undefined and -Wpedantic options.
- Rework page merging.
- Nested transactions.
- API description.
- Checking for non-local filesystems to avoid DB corruption.