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mdbx: update ChangeLog (preparation to v9.1 release).

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Change-Id: I58313f4bae4c31f4979d1000b45b3d5c04a9312d
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Leonid Yuriev 2020-09-22 00:41:05 +03:00
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ChangeLog.md
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ChangeLog
---------
## v0.9.0 (in the development)
Added features:
- [Online API reference](https://erthink.github.io/libmdbx/) by Doxygen.
- Functions to explicit reader threads (de)registration.
- Separated enums for environment, sub-databases, transactions, copying and data-update flags.
- Support for read transactions preparation (`MDBX_TXN_RDONLY_PREPARE` flag).
- Draft: Native bindings for C++.
## v0.9.2 (in development)
TODO:
- Finalize: Native bindings for C++.
- Packages for AltLinux, Fedora/RHEL, Debian/Ubuntu.
- Finalize C++ API (few typos and trivia bugs are likely for now).
- Packages for ROSA Linux, ALT Linux, Fedora/RHEL, Debian/Ubuntu.
## v0.9.1 2020-09-24 (scheduled, pre-release)
Added features:
- Preliminary C++ API with support for C++17 polymorphic allocators.
- [Online C++ API reference](https://erthink.github.io/libmdbx/) by Doxygen.
- Quick reference for Insert/Update/Delete operations.
- Explicit `MDBX_SYNC_DURABLE` to sync modes for API clarity.
- Explicit `MDBX_ALLDUPS` and `MDBX_UPSERT` for API clarity.
- Support for read transactions preparation (`MDBX_TXN_RDONLY_PREPARE` flag).
- Support for cursor preparation/preallocation and reusing (`mdbx_cursor_create()` and `mdbx_cursor_bind()` functions).
- Support for checking database using specified meta-page (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 and `mdbx_walk_tree()` function.
- Improved DB corruption detection by checking parent-page-txnid.
- Improved opening large DB (> 4Gb) from 32-bit code.
- Provided `pure-function` and `const-function` attributes to C API.
Deprecated functions and flags:
- Usage of custom comparators and the `mdbx_dbi_open_ex()` are deprecated, since such databases couldn't be checked by the `mdbx_chk` utility.
Please use the value-to-key functions to provide keys that are compatible with the built-in libmdbx comparators.
- For clarity and API simplification the `MDBX_MAPASYNC` flag is deprecated.
Just use `MDBX_SAFE_NOSYNC` or `MDBX_UTTERLY_NOSYNC` instead of it.
- For clarity and API simplification the `MDBX_MAPASYNC` flag is deprecated.
Just use `MDBX_SAFE_NOSYNC` or `MDBX_UTTERLY_NOSYNC` instead of it.
Fixes:
- Fix `mdbx_strerror()` for `MDBX_BUSY` error (no error description is returned).
- Fix update internal meta-geo information in read-only mode (`EACCESS` or `EBADF` error).
- Fix `mdbx_page_get()` null-defer when DB corrupted (crash by `SIGSEGV`).
- 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.
- Fixed a lot of typos.
- Fix MSVC compiler version requirements.
- Workarounds for QEMU's bugs to run tests for cross-builded library under QEMU.
## v0.9.0 2020-07-31 (not a release, but API changes)
Added features:
- [Online C API reference](https://erthink.github.io/libmdbx/) 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 the `mdbx_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