2472999da0
* net: fix typo causing the wrong receive buffer size Surprisingly this hasn't been causing me any issues while testing, probably because it requires lots of large blocks to be flying around. Send/Recv corks need tests! * net: make vRecvMsg a list so that we can use splice() * net: make GetReceiveFloodSize public This will be needed so that the message processor can cork incoming messages * net: only disconnect if fDisconnect has been set These conditions are problematic to check without locking, and we shouldn't be relying on the refcount to disconnect. * net: wait until the node is destroyed to delete its recv buffer when vRecvMsg becomes a private buffer, it won't make sense to allow other threads to mess with it anymore. * net: set message deserialization version when it's actually time to deserialize We'll soon no longer have access to vRecvMsg, and this is more intuitive anyway. * net: handle message accounting in ReceiveMsgBytes This allows locking to be pushed down to only where it's needed Also reuse the current time rather than checking multiple times. * net: record bytes written before notifying the message processor * net: Add a simple function for waking the message handler This may be used publicly in the future * net: remove useless comments * net: remove redundant max sendbuffer size check This is left-over from before there was proper accounting. Hitting 2x the sendbuffer size should not be possible. * net: rework the way that the messagehandler sleeps In order to sleep accurately, the message handler needs to know if _any_ node has more processing that it should do before the entire thread sleeps. Rather than returning a value that represents whether ProcessMessages encountered a message that should trigger a disconnnect, interpret the return value as whether or not that node has more work to do. Also, use a global fProcessWake value that can be set by other threads, which takes precedence (for one cycle) over the messagehandler's decision. Note that the previous behavior was to only process one message per loop (except in the case of a bad checksum or invalid header). That was changed in PR #3180. The only change here in that regard is that the current node now falls to the back of the processing queue for the bad checksum/invalid header cases. * net: add a new message queue for the message processor This separates the storage of messages from the net and queued messages for processing, allowing the locks to be split. * net: add a flag to indicate when a node's process queue is full Messages are dumped very quickly from the socket handler to the processor, so it's the depth of the processing queue that's interesting. The socket handler checks the process queue's size during the brief message hand-off and pauses if necessary, and the processor possibly unpauses each time a message is popped off of its queue. * net: add a flag to indicate when a node's send buffer is full Similar to the recv flag, but this one indicates whether or not the net's send buffer is full. The socket handler checks the send queue when a new message is added and pauses if necessary, and possibly unpauses after each message is drained from its buffer. * net: remove cs_vRecvMsg vRecvMsg is now only touched by the socket handler thread. The accounting vars (nRecvBytes/nLastRecv/mapRecvBytesPerMsgCmd) are also only used by the socket handler thread, with the exception of queries from rpc/gui. These accesses are not threadsafe, but they never were. This needs to be addressed separately. Also, update comment describing data flow |
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| README.md | ||
Dash Core staging tree 0.12.1
master: 
v0.12.0.x: 
v0.12.1.x: 
What is Dash?
Dash is an experimental new digital currency that enables anonymous, instant 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
There are also regression and integration tests of the RPC interface, written
in Python, that are run automatically on the build server.
These tests can be run (if the test dependencies are installed) with: qa/pull-tester/rpc-tests.py
The Travis CI system makes sure that every pull request is built for Windows and Linux, OS X, and that unit and sanity tests are automatically run.
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.