Dash - Reinventing Cryptocurrency
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Wladimir J. van der Laan bb44ac04c9
Merge #13023: Fix some concurrency issues in ActivateBestChain()
dd435ad Add unit tests for signals generated by ProcessNewBlock() (Jesse Cohen)
a3ae8e6 Fix concurrency-related bugs in ActivateBestChain (Jesse Cohen)
ecc3c4a Do not unlock cs_main in ABC unless we've actually made progress. (Matt Corallo)

Pull request description:

  Originally this PR was just to add tests around concurrency in block validation - those tests seem to have uncovered another bug in ActivateBestChain - this now fixes that bug and adds tests.

  ActivateBestChain (invoked after a new block is validated) proceeds in steps - acquiring and releasing cs_main while incrementally disconnecting and connecting blocks to sync to the most work chain known (FindMostWorkChain()). Every time cs_main is released the result of FindMostWorkChain() can change - but currently that value is cached across acquisitions of cs_main and only refreshed when an invalid chain is explored. It needs to be refreshed every time cs_main is reacquired. The test added in 6094ce7304 will occasionally fail without the commit fixing this issue 26bfdbaddb

  Original description below
  --

  After a bug discovered where UpdatedBlockTip() notifications could be triggered out of order (#12978), these unit tests check certain invariants about these signals.

  The scheduler test asserts that a SingleThreadedSchedulerClient processes callbacks fully and sequentially.

  The block validation test generates a random chain and calls ProcessNewBlock from multiple threads at random and in parallel. ValidationInterface callbacks verify that the ordering of BlockConnected BlockDisconnected and UpdatedBlockTip events occur as expected.

Tree-SHA512: 4102423a03d2ea28580c7a70add8a6bdb22ef9e33b107c3aadef80d5af02644cdfaae516c44933924717599c81701e0b96fbf9cf38696e9e41372401a5ee1f3c
2021-06-05 22:13:02 +03:00
.github Update docker tags (#4103) 2021-04-17 16:08:45 -04:00
.tx
build-aux/m4 Merge #18591: Add C++17 build to Travis 2021-04-23 20:02:35 +05:30
ci bls|ci: Fix C++17 build, add it to CI (#4055) 2021-04-28 16:44:01 +02:00
contrib Merge #14416: Fix OSX dmg issue (10.12 to 10.14) 2021-05-25 01:05:41 +03:00
depends depends: Undefine BLSALLOC_SODIUM in bls-dash.mk (#4176) 2021-05-24 21:09:48 -05:00
doc Merge pull request #4178 from UdjinM6/backports-0.17-pr30 2021-06-05 22:08:47 +03:00
docker feat: add tor entrypoint script for use in dashmate (#4182) 2021-06-02 12:54:57 -05:00
share Merge #13617: release: require macOS 10.10+ 2020-12-18 01:14:34 +03:00
src Merge #13023: Fix some concurrency issues in ActivateBestChain() 2021-06-05 22:13:02 +03:00
test Merge #11423: [Policy] Several transaction standardness rules 2021-06-05 22:13:01 +03:00
.gitattributes
.gitignore trivial|doc: Some trivial housekeeping (#4059) 2021-03-26 13:11:11 +01:00
.gitlab-ci.yml bls|ci: Fix C++17 build, add it to CI (#4055) 2021-04-28 16:44:01 +02:00
.travis.yml Merge #13066: Migrate verify-commits script to python, run in travis 2021-05-06 12:06:09 +03:00
autogen.sh Merge #13454: Make sure LC_ALL=C is set in all shell scripts 2020-07-28 21:35:31 -05:00
CMakeLists.txt refactor: PrivateSend -> CoinJoin + Move the tab (#4038) 2021-03-17 18:36:11 -04:00
configure.ac Merge #13005: Make --enable-debug to pick better options 2021-05-25 14:09:36 +03:00
CONTRIBUTING.md Merge #13165: doc: Mention good first issue list in CONTRIBUTING.md 2021-05-25 14:09:36 +03:00
COPYING Bump copyright year to 2020 (#3290) 2020-01-17 15:42:55 +01:00
INSTALL.md Dashify INSTALL.md and build-unix.md 2018-01-12 16:12:54 +01:00
libdashconsensus.pc.in
Makefile.am Merge #13254: Remove improper qt/moc_* cleaning glob from the general Makefile 2021-05-25 14:11:35 +03:00
README.md Use build badges provided by Gitlab (#3915) 2021-01-08 13:33:50 -06:00

Dash Core staging tree 0.17

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https://www.dash.org

What is Dash?

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

For more information, as well as an immediately useable, binary version of the Dash Core software, see https://www.dash.org/get-dash/.

License

Dash 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 meant to be stable. Development is normally done in separate branches. Tags are created to indicate new official, stable release versions of Dash Core.

The contribution workflow is described in CONTRIBUTING.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, that are run automatically on the build server. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The Travis CI system makes sure that every pull request is built for Windows, Linux, and OS X, 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 Dash 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.

Translators should also follow the forum.