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mdbx: release v0.9.3

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Acknowledgements:
-----------------
 - [Mahlon E. Smith](http://www.martini.nu/) for [FreeBSD port of libmdbx](https://svnweb.freebsd.org/ports/head/databases/mdbx/).
 - [장세연](http://www.castis.com) for bug fixing and PR.
 - [Clément Renault](https://github.com/Kerollmops/heed) for [Heed](https://github.com/Kerollmops/heed) fully typed Rust wrapper.
 - [Alex Sharov](https://github.com/AskAlexSharov) for bug reporting.
 - [Noel Kuntze](https://github.com/Thermi) for bug reporting.

Removed options and features:
-----------------------------
 - Drop `MDBX_HUGE_TRANSACTIONS` build-option (now no longer required).

New features:
-------------
 - Package for FreeBSD is available now by Mahlon E. Smith.
 - New API functions to get/set various options (https://github.com/erthink/libmdbx/issues/128):
    - the maximum number of named databases for the environment;
    - the maximum number of threads/reader slots;
    - threshold (since the last unsteady commit) to force flush the data buffers to disk;
    - relative period (since the last unsteady commit) to force flush the data buffers to disk;
    - limit to grow a list of reclaimed/recycled page's numbers for finding a sequence of contiguous pages for large data items;
    - limit to grow a cache of dirty pages for reuse in the current transaction;
    - limit of a pre-allocated memory items for dirty pages;
    - limit of dirty pages for a write transaction;
    - initial allocation size for dirty pages list of a write transaction;
    - maximal part of the dirty pages may be spilled when necessary;
    - minimal part of the dirty pages should be spilled when necessary;
    - how much of the parent transaction dirty pages will be spilled while start each child transaction;
 - Unlimited/Dynamic size of retired and dirty page lists (https://github.com/erthink/libmdbx/issues/123).
 - Added `-p` option (purge subDB before loading) to `mdbx_load` tool.
 - Reworked spilling of large transaction and committing of nested transactions:
    - page spilling code reworked to avoid the flaws and bugs inherited from LMDB;
    - limit for number of dirty pages now is controllable at runtime;
    - a spilled pages, including overflow/large pages, now can be reused and refunded/compactified in nested transactions;
    - more effective refunding/compactification especially for the loosed page cache.
 - Added `MDBX_ENABLE_REFUND` and `MDBX_PNL_ASCENDING` internal/advanced build options.
 - Added `mdbx_default_pagesize()` function.
 - Better support architectures with a weak/relaxed memory consistency model (ARM, AARCH64, PPC, MIPS, RISC-V, etc) by means [C11 atomics](https://en.cppreference.com/w/c/atomic).
 - Speed up page number lists and dirty page lists (https://github.com/erthink/libmdbx/issues/132).
 - Added `LIBMDBX_NO_EXPORTS_LEGACY_API` build option.

Fixes:
------
 - Fixed missing cleanup (null assigned) in the C++ commit/abort (https://github.com/erthink/libmdbx/pull/143).
 - Fixed `mdbx_realloc()` for case of nullptr and `MDBX_AVOID_CRT=ON` for Windows.
 - Fixed the possibility to use invalid and renewed (closed & re-opened, dropped & re-created) DBI-handles (https://github.com/erthink/libmdbx/issues/146).
 - Fixed 4-byte aligned access to 64-bit integers, including access to the `bootid` meta-page's field (https://github.com/erthink/libmdbx/issues/153).
 - Fixed minor/potential memory leak during page flushing and unspilling.
 - Fixed handling states of cursors's and subDBs's for nested transactions.
 - Fixed page leak in extra rare case the list of retired pages changed during update GC on transaction commit.
 - Fixed assertions to avoid false-positive UB detection by CLANG/LLVM (https://github.com/erthink/libmdbx/issues/153).
 - Fixed `MDBX_TXN_FULL` and regressive `MDBX_KEYEXIST` during large transaction commit with `MDBX_LIFORECLAIM` (https://github.com/erthink/libmdbx/issues/123).
 - Fixed auto-recovery (`weak->steady` with the same boot-id) when Database size at last weak checkpoint is large than at last steady checkpoint.
 - Fixed operation on systems with unusual small/large page size, including PowerPC (https://github.com/erthink/libmdbx/issues/157).

TODO:
-----
 - Engage new terminology (https://github.com/erthink/libmdbx/issues/137).
 - Resolve few TODOs (https://github.com/erthink/libmdbx/issues/124, https://github.com/erthink/libmdbx/issues/127,    https://github.com/erthink/libmdbx/issues/115).
 - Finalize C++ API.
 - Packages for [ROSA Linux](https://www.rosalinux.ru/), [ALT Linux](https://www.altlinux.org/), Fedora/RHEL, Debian/Ubuntu.

Change-Id: I414b8ef2e4b90e04fb344779c0e3f1b4bd1c06be
This commit is contained in:
Leonid Yuriev 2021-02-02 22:18:21 +03:00
parent 8133d93678
commit be220dc905
7 changed files with 9 additions and 7 deletions
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ChangeLog.md
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ChangeLog
---------
## v0.9.3 (in development) scheduled at 2021-02-23
## v0.9.4 (in development) scheduled at 2021-02-23
TODO:
- Engage new terminology (https://github.com/erthink/libmdbx/issues/137).
@ -10,6 +10,8 @@ TODO:
- Finalize C++ API (few typos and trivia bugs are still likely for now).
- Packages for [ROSA Linux](https://www.rosalinux.ru/), [ALT Linux](https://www.altlinux.org/), Fedora/RHEL, Debian/Ubuntu.
## v0.9.3 at 2021-02-02
Acknowledgements:
- [Mahlon E. Smith](http://www.martini.nu/) for [FreeBSD port of libmdbx](https://svnweb.freebsd.org/ports/head/databases/mdbx/).

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appveyor.yml
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version: 0.9.2.{build}
version: 0.9.3.{build}
environment:
matrix:

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src/man1/mdbx_chk.1
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.\" Copyright 2015-2021 Leonid Yuriev <leo@yuriev.ru>.
.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
.TH MDBX_CHK 1 "2020-09-25" "MDBX 0.9.1"
.TH MDBX_CHK 1 "2021-02-02" "MDBX 0.9.3"
.SH NAME
mdbx_chk \- MDBX checking tool
.SH SYNOPSIS

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src/man1/mdbx_copy.1
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.\" Copyright 2012-2015 Howard Chu, Symas Corp. All Rights Reserved.
.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>.
.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
.TH MDBX_COPY 1 "2020-09-25" "MDBX 0.9.1"
.TH MDBX_COPY 1 "2021-02-02" "MDBX 0.9.3"
.SH NAME
mdbx_copy \- MDBX environment copy tool
.SH SYNOPSIS

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src/man1/mdbx_dump.1
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.\" Copyright 2014-2015 Howard Chu, Symas Corp. All Rights Reserved.
.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>.
.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
.TH MDBX_DUMP 1 "2020-09-25" "MDBX 0.9.1"
.TH MDBX_DUMP 1 "2021-02-02" "MDBX 0.9.3"
.SH NAME
mdbx_dump \- MDBX environment export tool
.SH SYNOPSIS

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src/man1/mdbx_load.1
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.\" Copyright 2014-2015 Howard Chu, Symas Corp. All Rights Reserved.
.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>.
.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
.TH MDBX_LOAD 1 "2020-09-25" "MDBX 0.9.1"
.TH MDBX_LOAD 1 "2021-02-02" "MDBX 0.9.3"
.SH NAME
mdbx_load \- MDBX environment import tool
.SH SYNOPSIS

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src/man1/mdbx_stat.1
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.\" Copyright 2012-2015 Howard Chu, Symas Corp. All Rights Reserved.
.\" Copyright 2015,2016 Peter-Service R&D LLC <http://billing.ru/>.
.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
.TH MDBX_STAT 1 "2020-09-25" "MDBX 0.9.1"
.TH MDBX_STAT 1 "2021-02-02" "MDBX 0.9.3"
.SH NAME
mdbx_stat \- MDBX environment status tool
.SH SYNOPSIS