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Wladimir J. van der Laan 1cf73fb8eb
Merge #19607: [p2p] Add Peer struct for per-peer data in net processing 
8e35bf5906 scripted-diff: rename misbehavior members (John Newbery)
1f96d2e673 [net processing] Move misbehavior tracking state to Peer (John Newbery)
7cd4159ac8 [net processing] Add Peer (John Newbery)
aba03359a6 [net processing] Remove CNodeState.name (John Newbery)

Pull request description:

  We currently have two structures for per-peer data:

  - `CNode` in net, which should just contain connection layer data (eg socket, send/recv buffers, etc), but currently also contains some application layer data (eg tx/block inventory).
  - `CNodeState` in net processing, which contains p2p application layer data, but requires cs_main to be locked for access.

  This PR adds a third struct `Peer`, which is for p2p application layer data, and doesn't require cs_main. Eventually all application layer data from `CNode` should be moved to `Peer`, and any data that doesn't strictly require cs_main should be moved from `CNodeState` to `Peer` (probably all of `CNodeState` eventually).

  `Peer` objects are stored as shared pointers in a net processing global map `g_peer_map`, which is protected by `g_peer_mutex`. To use a `Peer` object, `g_peer_mutex` is locked, a copy of the shared pointer is taken, and the lock is released. Individual members of `Peer` are protected by different mutexes that guard related data. The lifetime of the `Peer` object is managed by the shared_ptr refcount.

  This PR adds the `Peer` object and moves the misbehaving data from `CNodeState` to `Peer`. This allows us to immediately remove 15 `LOCK(cs_main)` instances.

  For more motivation see #19398

ACKs for top commit:
  laanwj:
    Code review ACK 8e35bf5906
  troygiorshev:
    reACK 8e35bf5906 via `git range-diff master 9510938 8e35bf5`
  theuni:
    ACK 8e35bf5906.
  jonatack:
    ACK 8e35bf5906 keeping in mind Cory's comment (https://github.com/bitcoin/bitcoin/pull/19607#discussion_r470173964) for the follow-up

Tree-SHA512: ad84a92b78fb34c9f43813ca3dfbc7282c887d55300ea2ce0994d134da3e0c7dbc44d54380e00b13bb75a57c28857ac3236bea9135467075d78026767a19e4b1
2020-08-28 20:29:16 +02:00
.github doc: Remove label from good first issue template 2020-08-24 09:31:24 +02:00
.tx tx: Bump transifex slug to 020x 2020-03-16 10:52:55 +01:00
build_msvc Move Win32 defines to configure.ac to ensure they are globally defined 2020-08-20 17:55:06 +00:00
build-aux/m4 Merge #17396: build: modest Android improvements 2020-08-24 21:27:29 +08:00
ci ci: Set increased --timeout-factor by default 2020-08-15 09:24:46 +02:00
contrib Merge #19622: build: Drop ancient hack in gitian-linux descriptor 2020-08-10 20:15:09 +08:00
depends build: replace wingenminiupnpcstrings sed with a patch in miniupnpc package 2020-08-26 11:27:31 +08:00
doc Merge #19628: net: change CNetAddr::ip to have flexible size 2020-08-25 18:10:25 +02:00
share doc: Use precise permission flags where possible 2020-07-10 15:37:42 +02:00
src Merge #19607: [p2p] Add Peer struct for per-peer data in net processing 2020-08-28 20:29:16 +02:00
test Merge #19752: test: Update wait_until usage in tests not to use the one from utils 2020-08-27 08:21:59 +02:00
.appveyor.yml Merge #18011: Replace current benchmarking framework with nanobench 2020-07-30 15:34:17 +02:00
.cirrus.yml ci: Set cirrus RAM to 8GB 2020-08-17 11:53:31 +02:00
.fuzzbuzz.yml ci: Add fuzzbuzz integration 2020-04-14 16:38:26 +00:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore build: Add missed fuzz.coverage/ directory to .gitignore 2020-08-08 23:52:18 +03:00
.python-version .python-version: Specify full version 3.5.6 2019-03-02 12:06:26 -05:00
.style.yapf test: .style.yapf: Set column_limit=160 2019-03-04 18:28:13 -05:00
.travis.yml ci: Run valgrind fuzzer on cirrus 2020-08-17 11:52:02 +02:00
autogen.sh scripted-diff: Bump copyright of files changed in 2019 2019-12-30 10:42:20 +13:00
configure.ac Merge #15704: Move Win32 defines to configure.ac to ensure they are globally defined 2020-08-25 11:52:52 +08:00
CONTRIBUTING.md Replace hidden service with onion service 2020-08-07 14:55:02 +02:00
COPYING doc: Update license year range to 2020 2019-12-26 23:11:21 +01:00
INSTALL.md Update INSTALL landing redirection notice for build instructions. 2016-10-06 12:27:23 +13:00
libbitcoinconsensus.pc.in build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 2019-11-19 15:03:44 +01:00
Makefile.am build: Add missed fuzz_filtered.info to COVERAGE_INFO 2020-08-08 23:38:14 +03:00
README.md doc: Mention repo split in the READMEs 2020-06-08 10:06:14 -04:00
SECURITY.md doc: Remove explicit mention of version from SECURITY.md 2019-06-14 06:39:17 -04:00

README.md

Bitcoin Core integration/staging tree

https://bitcoincore.org

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, as well as an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/, or read the original 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, 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 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.

Translators should also subscribe to the mailing list.