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laanwj fe6a299fc0 Merge bitcoin/bitcoin#24852 : util: optimize HexStr `5e61532e72` util: optimizes HexStr (Martin Leitner-Ankerl) `4e2b99f72a` bench: Adds a benchmark for HexStr (Martin Leitner-Ankerl) `67c8411c37` test: Adds a test for HexStr that checks all 256 bytes (Martin Leitner-Ankerl) Pull request description: In my benchmark, this rewrite improves runtime 27% (g++) to 46% (clang++) for the benchmark `HexStrBench`: g++ 11.2.0 \| ns/byte \| byte/s \| err% \| ins/byte \| cyc/byte \| IPC \| bra/byte \| miss% \| total \| benchmark \|--------------------:\|--------------------:\|--------:\|----------------:\|----------------:\|-------:\|---------------:\|--------:\|----------:\|:---------- \| 0.94 \| 1,061,381,310.36 \| 0.7% \| 12.00 \| 3.01 \| 3.990 \| 1.00 \| 0.0% \| 0.01 \| `HexStrBench` master \| 0.68 \| 1,465,366,544.25 \| 1.7% \| 6.00 \| 2.16 \| 2.778 \| 1.00 \| 0.0% \| 0.01 \| `HexStrBench` branch clang++ 13.0.1 \| ns/byte \| byte/s \| err% \| ins/byte \| cyc/byte \| IPC \| bra/byte \| miss% \| total \| benchmark \|--------------------:\|--------------------:\|--------:\|----------------:\|----------------:\|-------:\|---------------:\|--------:\|----------:\|:---------- \| 0.80 \| 1,244,713,415.92 \| 0.9% \| 10.00 \| 2.56 \| 3.913 \| 0.50 \| 0.0% \| 0.01 \| `HexStrBench` master \| 0.43 \| 2,324,188,940.72 \| 0.2% \| 4.00 \| 1.37 \| 2.914 \| 0.25 \| 0.0% \| 0.01 \| `HexStrBench` branch Note that the idea for this change comes from denis2342 in #23364. This is a rewrite so no unaligned accesses occur. Also, the lookup table is now calculated at compile time, which hopefully makes the code a bit easier to review. ACKs for top commit: laanwj: Code review ACK `5e61532e72` aureleoules: tACK `5e61532e72`. theStack: ACK `5e61532e72` 🚤 Tree-SHA512: 40b53d5908332473ef24918d3a80ad1292b60566c02585fa548eb4c3189754971be5a70325f4968fce6d714df898b52d9357aba14d4753a8c70e6ffd273a2319		2022-05-04 20:36:09 +02:00
.github	doc: Remove label from good first issue template	2020-08-24 09:31:24 +02:00
.tx	qt: Update transifex resource blob to 23.0	2022-02-03 13:18:28 +01:00
build-aux/m4	build: stop overriding user CXXFLAGS	2022-04-03 19:36:17 +01:00
build_msvc	Revert "build: Specify `zeromq` port explicitly for MSVC builds"	2022-04-13 23:26:23 +02:00
ci	Merge bitcoin/bitcoin#25029 : rpc: Move fee estimation RPCs to separate file	2022-05-03 08:17:50 +02:00
contrib	Merge bitcoin/bitcoin#24993 : test, contrib, refactor: use `with` when opening a file	2022-05-04 19:52:16 +02:00
depends	build: Fix `libmultiprocess` cross-compiling to Linux hosts	2022-05-01 10:41:32 +02:00
doc	Merge bitcoin/bitcoin#24644 : wallet: add tracepoints and algorithm information to coin selection	2022-04-26 19:16:27 +01:00
share	build: Fix `make deploy` for Windows when building out of source tree	2022-02-06 13:34:49 +02:00
src	Merge bitcoin/bitcoin#24852 : util: optimize HexStr	2022-05-04 20:36:09 +02:00
test	Merge bitcoin/bitcoin#24993 : test, contrib, refactor: use `with` when opening a file	2022-05-04 19:52:16 +02:00
.cirrus.yml	ci: Bump vcpkg to the latest version	2022-04-13 23:26:23 +02:00
.editorconfig	ci: Drop AppVeyor CI integration	2021-09-07 06:12:53 +03:00
.gitattributes	Separate protocol versioning from clientversion	2014-10-29 00:24:40 -04:00
.gitignore	build: don't compress macOS DMG	2022-04-11 10:34:30 +01:00
.python-version	Bump minimum python version to 3.6	2020-11-09 17:53:47 +10:00
.style.yapf	test: .style.yapf: Set column_limit=160	2019-03-04 18:28:13 -05:00
autogen.sh	scripted-diff: Bump copyright of files changed in 2019	2019-12-30 10:42:20 +13:00
configure.ac	Merge bitcoin/bitcoin#24958 : build: Fix macOS Apple M1 build with miniupnpc and libnatpmp. Again :)	2022-04-28 19:26:46 +02:00
CONTRIBUTING.md	doc: Add `guix` prefix for changes to reproducible builds	2022-03-09 11:35:17 +01:00
COPYING	doc: Update license year range to 2022	2022-01-03 04:48:41 +08:00
INSTALL.md	doc: Added hyperlink for doc/build	2021-09-09 19:53:12 +05:30
libbitcoinconsensus.pc.in	build: remove libcrypto as internal dependency in libbitcoinconsensus.pc	2019-11-19 15:03:44 +01:00
Makefile.am	Merge bitcoin/bitcoin#24031 : build: don't compress macOS DMG	2022-04-21 08:54:13 +01:00
README.md	doc: Rework internal and external links	2021-02-17 09:18:46 +01:00
REVIEWERS	doc: update maintainer list in REVIEWERS	2022-02-25 11:46:26 +00:00
SECURITY.md	doc: Suggest `keys.openpgp.org` as keyserver in SECURITY.md	2021-11-08 12:22:04 +01:00

README.md

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

Further information about Bitcoin Core is available in the doc folder.

What is Bitcoin?

Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.

For more information read the original Bitcoin whitepaper.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.