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* Replace consensus values with Dogecoin equivalentsRoss Nicoll2021-06-021-1/+1
| | | | | | | * Replace chain parameters with Dogecoin values * Update maximum coins to match Dogecoin * Disable version 2 block requirement * Update coinbase maturity to match Dogecoin
* Dogecoin: Update coinbase maturityRoss Nicoll2021-05-201-4/+4
| | | | | | | * Change coinbase maturity to 240 blocks in most cases, with main/test early chains allowing 30 blocks. I've kept the 240 consistent in regtest to avoid having to redesign a lot of the test cases. * Disabled mining unit test which require COINBASE_MATURITY worth of pre-calculated blocks, as we'd otherwise be constantly refactoring them. * Moved functional test which uses the Bitcoin testnet block data as its reference, as it completely breaks as we introduce Dogecoin data. * Updated standard blockchains for tests from 100/200 to 240/480 as appropriate.
* validation: Pass in chainman to UnloadBlockIndexCarl Dong2020-09-151-1/+1
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* scripted-diff: [net processing] Rename PeerLogicValidation to PeerManagerJohn Newbery2020-09-071-2/+2
| | | | | | | | | | | | | | | -BEGIN VERIFY SCRIPT- sed -i 's/PeerLogicValidation/PeerManager/g' $(git grep -l PeerLogicValidation ./src ./test) sed -i 's/peer_logic/peerman/g' $(git grep -l peer_logic ./src ./test) -END VERIFY SCRIPT- PeerLogicValidation was originally net_processing's implementation to the validation interface. It has since grown to contain much of net_processing's logic. Therefore rename it to reflect its responsibilities. Suggested in https://github.com/bitcoin/bitcoin/pull/10756#pullrequestreview-53892618.
* [net_processing] Pass chainparams to PeerLogicValidation constructorJohn Newbery2020-09-071-1/+1
| | | | | | | Keep a references to chainparams, rather than calling the global Params() function every time it's needed. This is fine, since globalChainParams does not get updated once it's been set, and it's available at the point of constructing the PeerLogicValidation object.
* Remove mempool globalMarcoFalke2020-09-051-3/+3
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* Pass mempool reference to chainstate constructorMarcoFalke2020-08-281-3/+4
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* Merge #19779: Remove gArgs global from initfanquake2020-08-261-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fa9d5902f7d72e8cce105dd1b1f5a1062e304b10 scripted-diff: gArgs -> args (MarcoFalke) fa33bc2dabbbd2d73961f9b0ce51420a3b6e4ad5 init: Capture copy of blocknotify setting for BlockNotifyCallback (MarcoFalke) fa40017706e08b4de111e8e57aabeced60881a57 init: Pass reference to ArgsManager around instead of relying on global (MarcoFalke) Pull request description: The gArgs global has several issues: * gArgs is used by each process (bitcoind, bitcoin-qt, bitcoin-wallet, bitcoin-cli, bitcoin-tx, ...), but it is hard to determine which arguments are actually used by each process. For example arguments that have never been registered, but are still used, will always return the fallback value. * Tests may run several sub-tests, which need different settings. So globals will have to be overwritten, but that is fragile on its own: e.g. https://github.com/bitcoin/bitcoin/pull/19704#issuecomment-678259092 or #19511 The goal is to remove gArgs, but as a first step in that direction this pull will change gArgs in init to use a passed-in reference instead. ACKs for top commit: ryanofsky: Code review ACK fa9d5902f7d72e8cce105dd1b1f5a1062e304b10. Looks good. Nice day to remove some globals, and add some lambdas :+1: fanquake: ACK fa9d5902f7d72e8cce105dd1b1f5a1062e304b10 - I'm not as familiar with the settings & argument handling code, but this make sense, and is a step in the right direction towards a reduction in the usage of globals. Not a huge fan of the clang-formatting in the scripted diff. jonasschnelli: Concept ACK fa9d5902f7d72e8cce105dd1b1f5a1062e304b10 Tree-SHA512: ed00db5f826566c7e3b4d0b3d2ee0fc1a49a6e748e04e5c93bdd694ac7da5598749e73937047d5fce86150d764a067d2ca344ba4ae3eb2704cc5c4fa0d20940f
| * init: Pass reference to ArgsManager around instead of relying on globalMarcoFalke2020-08-241-2/+2
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* | Merge #19775: test: Activate segwit in TestChain100Setupfanquake2020-08-261-25/+10
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fad84b7e14ff92465bc17bfdaf1362bcffe092f6 test: Activate segwit in TestChain100Setup (MarcoFalke) fa11ff29803ca4f5fd0035bede697448cff7d960 test: Pass empty tx pool to block assembler (MarcoFalke) fa96574b0d2d2c0880447f163cd0280fb3551910 test: Move doxygen comment to header (MarcoFalke) Pull request description: This fixes not only a TODO in the code, but also prevents a never ending source of uninitialized reads. E.g. * #18376 * https://github.com/bitcoin/bitcoin/pull/19704#issuecomment-678259092 * ... ACKs for top commit: jnewbery: utACK fad84b7e14ff92465bc17bfdaf1362bcffe092f6 Tree-SHA512: 64cf16a59656d49e022b603f3b06441ceae35a33a4253b4382bc8a89a56e08ad5412c8fa734d0fc7b58586f40ea6d57b348a3b4838bc6890a41ae2ec3902e378
| * | test: Activate segwit in TestChain100SetupMarcoFalke2020-08-211-12/+1
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| * | test: Pass empty tx pool to block assemblerMarcoFalke2020-08-211-3/+3
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| * | test: Move doxygen comment to headerMarcoFalke2020-08-211-12/+8
| |/ | | | | | | | | | | Also, unrelated formatting fixups. Can be reviewed with --word-diff-regex=.
* / [net_processing] Change PeerLogicValidation to hold a connman referenceJohn Newbery2020-08-121-1/+1
|/ | | | | | | | | | | | | Hold a reference to connman rather than a pointer because: - PeerLogicValidation can't run without a connman - The pointer never gets reseated The alternative is to always assert that the pointer is non-null before dereferencing. Change the name from connman to m_connman at the same time to conform with current style guidelines.
* Merge #19098: test: Remove duplicate NodeContext hacksMarcoFalke2020-08-071-0/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | edc316020e8270dafc5e31465d532baebdafd3dd test: Remove duplicate NodeContext hacks (Russell Yanofsky) Pull request description: Qt tests currently are currently using two NodeContext structs at the same time, one in interfaces::NodeImpl::m_context, and the other in BasicTestingSetup::m_node, and the tests have hacks transferring state between them. Fix this by getting rid of the NodeImpl::m_context struct and making it a pointer. This way a common BitcoinApplication object can be used for all qt tests, but they can still have their own testing setups. Non-test code is changing but non-test behavior is still the same as before. Motivation for this PR is to be able to remove the "std::move(test.m_node.connman)" and mempool hacks for swapping individual NodeContext members in Qt tests, because followup PR #19099 adds yet another member (wallet_client) that needs to be swapped. After this change, the whole NodeContext struct can be swapped instead of individual members, so the workarounds are less fragile and invasive. ACKs for top commit: MarcoFalke: crACK edc316020e8270dafc5e31465d532baebdafd3dd 🌮 promag: ACK edc316020e8270dafc5e31465d532baebdafd3dd. Tree-SHA512: c1650e4127f43a4020304ca7c13b5d9122fb5723aacd8fa1cf855d03c6052fcfb7685810aa2a5ef708561015f0022fecaacbad479295104ca45d2c17579466a4
| * test: Remove duplicate NodeContext hacksRussell Yanofsky2020-07-131-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Qt tests currently are currently using two NodeContext structs at the same time, one in interfaces::NodeImpl::m_context, and the other in BasicTestingSetup::m_node, and the tests have hacks transferring state between them. Fix this by getting rid of the NodeImpl::m_context struct and making it a pointer. This way a common BitcoinApplication object can be used for all qt tests, but they can still have their own testing setups. Non-test code is changing but non-test behavior is still the same as before. Motivation for this PR is to be able to remove the "std::move(test.m_node.connman)" and mempool hacks for swapping individual NodeContext members in Qt tests, because followup PR #19099 adds yet another member (wallet_client) that needs to be swapped. After this change, the whole NodeContext struct can be swapped instead of individual members, so the workarounds are less fragile and invasive.
* | Pass mempool pointer to UnloadBlockIndexMarcoFalke2020-07-291-1/+1
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* | Merge #18637: coins: allow cache resize after initMarcoFalke2020-07-291-1/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | f19fdd47a6371dcbe0760ef6f3c3c5adb31b1bb4 test: add test for CChainState::ResizeCoinsCaches() (James O'Beirne) 8ac3ef46999ed676ca3775f7b2f461d92f09a542 add ChainstateManager::MaybeRebalanceCaches() (James O'Beirne) f36aaa6392fdbdac6891d92202d3efeff98754f4 Add CChainState::ResizeCoinsCaches (James O'Beirne) b223111da2e0e9ceccef75df8a20252b0094b7bc txdb: add CCoinsViewDB::ChangeCacheSize (James O'Beirne) Pull request description: This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11): Parent PR: #15606 Issue: #15605 Specification: https://github.com/jamesob/assumeutxo-docs/tree/master/proposal --- In the assumeutxo implementation draft (#15056), once a UTXO snapshot is loaded, a new chainstate object is created after initialization. This means that we have to reclaim some of the cache that we've allocated to the original chainstate (per `dbcache=`) to repurpose for the snapshot chainstate. Furthermore, it makes sense to have different cache allocations depending on which chainstate is more active. While the snapshot chainstate is working to get to the network tip (and the background validation chainstate is idle), it makes sense that the snapshot chainstate should have the majority of cache allocation. And contrariwise once the snapshot has reached network tip, most of the cache should be given to the background validation chainstate. This set of changes (detailed in the commit messages) allows us to dynamically resize the various coins caches. None of the functionality introduced here is used at the moment, but will be in the next AU PR (which introduces `ActivateSnapshot`). `ChainstateManager::MaybeRebalanceCaches()` defines the (somewhat normative) cache allocations between the snapshot and background validation chainstates. I'd be interested in feedback if anyone has thoughts on the proportions I've set there. ACKs for top commit: ajtowns: weak utACK f19fdd47a6371dcbe0760ef6f3c3c5adb31b1bb4 -- didn't find any major problems, but not super confident that I didn't miss anything fjahr: Code review ACK f19fdd4 ryanofsky: Code review ACK f19fdd47a6371dcbe0760ef6f3c3c5adb31b1bb4. Only change since last review is constructor cleanup (no change in behavior). I think the suggestions here from ajtowns and others are good, but shouldn't delay merging the PR (and hold up assumeutxo) Tree-SHA512: fffb7847fb6993dd4a1a41cf11179b211b0b20b7eb5f7cf6266442136bfe9d43b830bbefcafd475bfd4af273f5573500594aa41fff03e0ed5c2a1e8562ff9269
| * Add CChainState::ResizeCoinsCachesJames O'Beirne2020-07-011-1/+1
| | | | | | | | | | | | | | | | | | | | Also adds CCoinsViewCache::ReallocateCache() to attempt to free memory that the cacheCoins's allocator may be hanging onto when downsizing the cache. Adds `CChainState::m_coins{tip,db}_cache_size_bytes` data members so that we can reference cache size on a per-chainstate basis for flushing.
* | Merge #19277: util: Add Assert identity functionMarcoFalke2020-07-041-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fab80fef61ddd4afeff6e497c7e76bffcd05e8a4 refactor: Remove unused EnsureChainman (MarcoFalke) fa34587f1c811d99200453b0936219c473f514b0 scripted-diff: Replace EnsureChainman with Assert in unit tests (MarcoFalke) fa6ef701adba1cb48535cac25fd43c742a82e40d util: Add Assert identity function (MarcoFalke) fa457fbd3387661e1973a8f4e5cc2def79e0c625 move-only: Move NDEBUG compile time check to util/check (MarcoFalke) Pull request description: The utility function is primarily useful to dereference pointer types, which are known to be not null at that time. For example, the ArgsManager is known to exist when the wallets are started: https://github.com/bitcoin/bitcoin/pull/18923/files#diff-fdb2a1a1d8bc790fcddeb6cf5a42ac55R503 . Instead of silently relying on that assumption, `Assert` can be used to abort the program and avoid UB should the assumption ever be violated. ACKs for top commit: promag: Tested ACK fab80fef61ddd4afeff6e497c7e76bffcd05e8a4. ryanofsky: Code review ACK fab80fef61ddd4afeff6e497c7e76bffcd05e8a4 Tree-SHA512: 830fba10152ba17d47c4dd42809c7e26f9fe6d38e17a2d5b3f054fd644a5c4c9841286ac421ec9bb28cea9f5faeb659740fcf00de6cc589d423fee7694c42d16
| * | scripted-diff: Replace EnsureChainman with Assert in unit testsMarcoFalke2020-06-151-1/+1
| |/ | | | | | | | | | | -BEGIN VERIFY SCRIPT- sed --regexp-extended -i -e 's/EnsureChainman\((m?_?node)\)\./Assert(\1.chainman)->/g' $(git grep -l EnsureChainman) -END VERIFY SCRIPT-
* | Merge #19028: test: Set -logthreadnames in unit testsWladimir J. van der Laan2020-07-011-1/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 99993489da9bc003b823bcab10e5f5297b369431 test: Set -logthreadnames in unit tests (MarcoFalke) fa4ea997b4da1ae0afafba223fff9efbeefaf555 init: Setup scheduler in tests and init in exactly the same way (MarcoFalke) Pull request description: Generally the unit tests are single threaded, with the exception of the script check threads, the schedule, and optionally indexer threads. Like the functional tests, the thread name can serve additional debug information, so set `-logthreadnames` in unit tests. Can be tested with ``` ./src/test/test_bitcoin -l test_suite -t validation_tests/test_combiner_all -- DEBUG_LOG_OUT ACKs for top commit: laanwj: ACK 99993489da9bc003b823bcab10e5f5297b369431 Tree-SHA512: 3bdbfc211da146da64b50b0826246aff5c611a84b69ab896a55b3c9d1adc92c5975da36ab92aee577df82e229c4326b477f4105bfdd1a5df4c9a0b018cf61602
| * | test: Set -logthreadnames in unit testsMarcoFalke2020-05-211-0/+2
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| * | init: Setup scheduler in tests and init in exactly the same wayMarcoFalke2020-05-211-1/+1
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* | | test: Remove unused scheduler.h include from the common setupMarcoFalke2020-05-281-0/+1
| |/ |/| | | | | | | The common setup is included in virtually all tests, so it should be as slim as possible.
* | validation: Make ProcessNewBlock*() members of ChainstateManagerMarcoFalke2020-05-211-1/+1
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* | net: Pass chainman into PeerLogicValidationMarcoFalke2020-05-211-1/+1
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* | node: Add chainman alias for g_chainmanMarcoFalke2020-05-211-2/+4
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* refactor: Remove g_rpc_node globalRussell Yanofsky2020-05-131-2/+0
| | | | This commit does not change behavior
* refactor: Pass NodeContext to RPC and REST methods through util::RefRussell Yanofsky2020-05-131-1/+1
| | | | This commit does not change behavior
* scripted-diff: Bump copyright headersMarcoFalke2020-04-161-1/+1
| | | | | | -BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT-
* test: Add optional extra_args to testing setupMarcoFalke2020-04-151-3/+23
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* node: Add args alias for gArgs globalMarcoFalke2020-04-151-0/+1
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* Merge #17737: Add ChainstateManager, remove BlockManager globalMarcoFalke2020-04-101-2/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | c9017ce3bc27665594c9d80f395780d40755bb22 protect g_chainman with cs_main (James O'Beirne) 2b081c4568e8019886fdb0f2a57babc73d7487f7 test: add basic tests for ChainstateManager (James O'Beirne) 4ae29f5f0c5117032debb722d7049664fdceeae8 use ChainstateManager to initialize chainstate (James O'Beirne) 5b690f0aae21e7d46cbefe3f5be645842ac4ae3b refactor: move RewindBlockIndex to CChainState (James O'Beirne) 89cdf4d5692d396b8c7177b3918aa9dab07f9624 validation: introduce unused ChainstateManager (James O'Beirne) 8e2ecfe2496d8a015f3ee8723025a438feffbd28 validation: add CChainState.m_from_snapshot_blockhash (James O'Beirne) Pull request description: This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11): Parent PR: #15606 Issue: #15605 Specification: https://github.com/jamesob/assumeutxo-docs/tree/master/proposal --- This changeset introduces `ChainstateManager`, which is responsible for creating and managing access to multiple chainstates. Until we allow chainstate creation from UTXO snapshots (next assumeutxo PR?) it's basically unnecessary, but it is a prerequisite for background IBD support. Changes are also made to the initialization process to make use of `g_chainman` and thus clear the way for multiple chainstates being loaded on startup. One immediate benefit of this change is that we no longer have the `g_blockman` global, but instead have the ChainstateManager inject a reference of its shared BlockManager into any chainstate it creates. Another immediate benefit is that uses of `ChainActive()` and `ChainstateActive()` are now covered by lock annotations. Because use of `g_chainman` is annotated to require cs_main, these two functions subsequently follow. Because of whitespace changes, this diff looks bigger than it is. E.g., 4813167d98 is most easily reviewed with ```sh git show --color-moved=dimmed_zebra -w 4813167d98 ``` ACKs for top commit: MarcoFalke: re-ACK c9017ce3bc27665594c9d80f395780d40755bb22 📙 fjahr: Code Review Re-ACK c9017ce3bc27665594c9d80f395780d40755bb22 ariard: Code Review ACK c9017ce ryanofsky: Code review ACK c9017ce3bc27665594c9d80f395780d40755bb22. No changes since last review other than a straight rebase Tree-SHA512: 3f250d0dc95d4bfd70852ef1e39e081a4a9b71a4453f276e6d474c2ae06ad6ae6a32b4173084fe499e1e9af72dd9007f4a8a375c63ce9ac472ffeaada41ab508
| * test: add basic tests for ChainstateManagerJames O'Beirne2020-03-171-0/+1
| | | | | | | | | | | | Feedback incorporated from Russell Yanofsky. Co-authored-by: MarcoFalke <[email protected]>
| * use ChainstateManager to initialize chainstateJames O'Beirne2020-03-171-2/+2
| | | | | | | | | | This allows us to easily initialize multiple chainstates on startup in future commits. It retires the g_chainstate global in lieu of g_chainman.
* | Merge #18504: build: Drop bitcoin-tx and bitcoin-wallet dependencies on libeventMarcoFalke2020-04-101-0/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 01a3392b1b778fa4fcf568013326d6ea1de4fb3b Drop bitcoin-wallet dependency on libevent (Russell Yanofsky) 0660119ac372c2863d14060ac1bc9bc243771f94 Drop unintended bitcoin-tx dependency on libevent (Russell Yanofsky) Pull request description: This fixes compile errors trying to build bitcoin-tx and bitcoin-wallet without libevent, which were reported by Luke Dashjr in https://github.com/bitcoin/bitcoin/issues/18465 The fix avoiding `bitcoin-tx` dependency on libevent just adds a conditional build rule. This is implemented in the first commit (more details in commit description). The fix avoiding `bitcoin-wallet` dependency on libevent requires minor code changes, because `bitcoin-wallet` (unlike `bitcoin-tx`) links against code that calls `urlDecode` / `evhttp_uridecode`. This fix is implemented in the second commit (again details in the commit description). ACKs for top commit: jonasschnelli: utACK 01a3392b1b778fa4fcf568013326d6ea1de4fb3b. Tree-SHA512: d2245e912ab494cccceeb427a1eca8e55b01a0006ff93eebcfb5461ae7cecd1083ac2de443d9db036b18bdc6f0fb615546caaa20c585046f66d234937f74870a
| * | Drop bitcoin-wallet dependency on libeventRussell Yanofsky2020-04-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't require urlDecode function in wallet code since urlDecode implementation currently uses libevent. Just call urlDecode indirectly though URL_DECODE function pointer constant if available. In bitcoind and bitcoin-qt, URL_DECODE is implemented and used to interpret RPC wallet requests. In bitcoin-wallet, URL_DECODE is null to avoid depending on libevent.
* | | fuzz: Add process_messages harnessMarcoFalke2020-04-051-0/+5
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* | Merge #18134: Replace std::to_string with locale-independent alternativeWladimir J. van der Laan2020-03-251-0/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | d056df033a1e88554f7cc39dd709a87b17cb49df Replace std::to_string with locale-independent alternative (Ben Woosley) Pull request description: Addresses #17866 following practicalswift's suggestion: https://github.com/bitcoin/bitcoin/issues/17866#issuecomment-584287299 ~Used ::ToString to avoid aliasing issues. Left uses in QT and test.~ ACKs for top commit: practicalswift: ACK d056df033a1e88554f7cc39dd709a87b17cb49df laanwj: ACK d056df033a1e88554f7cc39dd709a87b17cb49df Tree-SHA512: 9e6966a9cdd14f4a1a40d9f0fa7c402aed22b2f1ad8681708e22b050d51a91c5d62220a9ec4c425be2d57acf5c964fca87a5e981b5cbff048bc3b6720dae92b7
| * Replace std::to_string with locale-independent alternativeBen Woosley2020-03-141-0/+1
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* | refactor: Remove mempool global from netMarcoFalke2020-03-121-1/+1
|/ | | | | | This refactor does two things: * Pass mempool in to PeerLogicValidation * Pass m_mempool around where needed
* tests: Add fuzzing harness for ProcessMessage(...)practicalswift2020-03-111-1/+3
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* scheduler: don't rely on boost interrupt on shutdownAnthony Towns2020-03-061-0/+1
| | | | | | Calling interrupt_all() will immediately stop the scheduler, so it's safe to invoke stop() beforehand, and this removes the reliance on boost to interrupt serviceQueue().
* Refactor FormatStateMessage into ValidationStateJeffrey Czyz2020-02-271-2/+1
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* [lib] add scheduler to node contextAmiti Uttarwar2020-02-171-2/+5
| | | | - also update test setup & access point in denial of service test
* test: Show debug log on unit test failureMarcoFalke2020-01-021-0/+1
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* rpc: Remove mempool global from minerMarcoFalke2019-12-231-1/+1
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* node: Add reference to mempool in NodeContextMarcoFalke2019-11-151-1/+3
| | | | | | | | | | | | | | Currently it is an alias to the global ::mempool and should be used as follows. * Node code (validation and transaction relay) can use either ::mempool or node.mempool, whichever seems a better fit. * RPC code should use the added convenience getter EnsureMempool, which makes sure the mempool exists before use. This prepares the RPC code to a future where the mempool might be disabled at runtime or compile time. * Test code should use m_node.mempool directly, as the mempool is always initialized for tests.
* Merge #16978: test: Seed test RNG context for each test case, print seedMarcoFalke2019-11-071-1/+23
| | | | | | | | | | | | | | | | fae43a97ca947cd0802392e9bb86d9d0572c0fba test: Seed test RNG context for each test case, print seed (MarcoFalke) Pull request description: Debugging failing unit tests is hard if the failure is non-deterministic and the seed is not known. Fix that by printing the seed and making it possible to set the seed from outside. ACKs for top commit: davereikher: Tested ACK fae43a97ca947cd0802392e9bb86d9d0572c0fba Tree-SHA512: 33d848dd1f4180d3664ecf60e9810c2a93590c05276b2c46b1e4fe6e376b45916a46b90c803bb602750ab666da3a05ce499e550024685a90b8cc38fab6667cb8