A library that provides an embeddable, persistent key-value store for fast storage.
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Andrew Kryczka 3ae9c5309b Remove explicit padding from CacheAlignedInstrumentedMutex (#9809)
Summary:
Fixes https://github.com/facebook/rocksdb/issues/9779.

The padding at the end of a struct is added implicitly according to the
sizeof spec: "When applied to a class, the result is the
number of bytes in an object of that class including any padding
required for placing objects of that type in an array"
(https://eel.is/c++draft/expr.sizeof#2.sentence-2). We should drop the
explicit padding since it assumed support for zero-length arrays, which
is non-standard.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9809

Test Plan: rely on CI

Reviewed By: riversand963

Differential Revision: D35413496

Pulled By: ajkr

fbshipit-source-id: 25d52ca45e648ad0d5657149f26f6adecbed1cb4
2022-04-05 18:32:05 -07:00
.circleci Upgrade gbenchmark to 1.6.1 (#9775) 2022-03-30 10:09:49 -07:00
.github/workflows Use released clang-format instead of the one from dev branch (#9646) 2022-03-01 10:51:38 -08:00
buckifier Remove DBGet P95/P99 benchmark metrics (#9742) 2022-03-24 10:08:35 -07:00
build_tools Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
cache Improve comments for some files (#9793) 2022-04-01 16:06:14 -07:00
cmake gcc-11 and cmake related cleanup (#9286) 2021-12-17 17:04:35 -08:00
coverage Fix commit_prereq and other targets (#9797) 2022-04-04 09:58:18 -07:00
db Fix GetMergeOperands() heap-use-after-free on flushed memtable (#9805) 2022-04-05 12:26:36 -07:00
db_stress_tool Added GetMergeOperands() to stress test (#9804) 2022-04-05 14:56:28 -07:00
docs Update Githubpages version (#9670) 2022-03-07 14:48:06 -08:00
env Fix segfault in FilePrefetchBuffer with async_io enabled (#9777) 2022-04-04 15:35:43 -07:00
examples Remove BlockBasedTableOptions.hash_index_allow_collision (#9454) 2022-03-01 13:58:02 -08:00
file Fix segfault in FilePrefetchBuffer with async_io enabled (#9777) 2022-04-04 15:35:43 -07:00
fuzz Fix compilation errors and add fuzzers to CircleCI (#9420) 2022-02-01 10:32:15 -08:00
include/rocksdb rename property "kIsFileDeletionsEnabled" to "kIsFileDeletionsDisabled" (#9791) 2022-04-05 17:16:47 -07:00
java Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
logging Use system-wide thread ID in info log lines (#9164) 2021-11-12 19:46:06 -08:00
memory Return different Status based on ObjectRegistry::NewObject calls (#9333) 2022-02-11 05:11:24 -08:00
memtable Remove using namespace (#9369) 2022-01-12 09:31:12 -08:00
microbench Add microbench document (#9781) 2022-03-31 17:17:44 -07:00
monitoring Remove explicit padding from CacheAlignedInstrumentedMutex (#9809) 2022-04-05 18:32:05 -07:00
options Document SetOptions API (#9778) 2022-03-30 14:51:12 -07:00
plugin Add initial CMake support to plugin (#9214) 2021-11-30 17:16:53 -08:00
port #include <winioctl.h> as MSDN prescribes (#9612) 2022-03-13 17:01:21 -07:00
table Fix segfault in FilePrefetchBuffer with async_io enabled (#9777) 2022-04-04 15:35:43 -07:00
test_util Remove BlockBasedTableOptions.hash_index_allow_collision (#9454) 2022-03-01 13:58:02 -08:00
third-party Work around some new clang-analyze failures (#9515) 2022-02-07 18:24:36 -08:00
tools Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
trace_replay Added TraceOptions::preserve_write_order (#9334) 2021-12-28 15:04:26 -08:00
util Add manifest fix-up utility for file temperatures (#9683) 2022-03-18 16:35:51 -07:00
utilities Disallow commit-time-batch for write-prepared/write-unprepared txn conditionally (#9794) 2022-04-05 11:10:20 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore gitignore cmake-build-* for CLion integration (#7933) 2021-02-19 13:43:15 -08:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:21:01 -07:00
CONTRIBUTING.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
COPYING Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
crash_test.mk Add new determinators for multiops transactions stress test (#9708) 2022-03-23 22:29:50 -07:00
DEFAULT_OPTIONS_HISTORY.md Add Options::DisableExtraChecks, clarify force_consistency_checks (#9363) 2022-01-18 17:31:03 -08:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Disallow commit-time-batch for write-prepared/write-unprepared txn conditionally (#9794) 2022-04-05 11:10:20 -07:00
INSTALL.md Add microbench document (#9781) 2022-03-31 17:17:44 -07:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
LANGUAGE-BINDINGS.md Update branch name to "main" in README/LANGUAGE_BINDINGS (#8727) 2021-09-01 15:26:34 -07:00
LICENSE.Apache Change RocksDB License 2017-07-15 16:11:23 -07:00
LICENSE.leveldb Add back the LevelDB license file 2017-07-16 18:42:18 -07:00
Makefile Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
PLUGINS.md Move RADOS support to separate repo (#9206) 2022-01-24 22:50:07 -08:00
python.mk crash_test Makefile refactoring, add to CircleCI (#9702) 2022-03-16 15:58:06 -07:00
README.md README: De-list slack channel, list Google group (#9387) 2022-01-18 08:19:48 -08:00
ROCKSDB_LITE.md Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
src.mk Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
TARGETS Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md Add Solana's RocksDB use case in USERS.md (#9558) 2022-02-16 09:23:01 -08:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Update branch name in WINDOWS_PORT.md (#8745) 2021-09-01 19:26:39 -07:00

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

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RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)

This code is a library that forms the core building block for a fast key-value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it especially suitable for storing multiple terabytes of data in a single database.

Start with example usage here: https://github.com/facebook/rocksdb/tree/main/examples

See the github wiki for more explanation.

The public interface is in include/. Callers should not include or rely on the details of any other header files in this package. Those internal APIs may be changed without warning.

Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.

License

RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.