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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
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and move it from validation to net processing.
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Aside from in unittests, this method is unused at the moment. It will be used
in upcoming commits that enable utxo snapshot activation.
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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.
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Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
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faec3dc2adc487af97c22408f9f0bfe33f44a230 init: Remove boost from ThreadImport (MarcoFalke)
Pull request description:
Can be tested by calling `-reindex` or `-loadblock` and then pressing `CTRL`+`C`.
Should print something like:
```
...
2020-04-27T19:34:31Z [loadblk] Reindexing block file blk00005.dat...
^C2020-04-27T19:34:32Z [loadblk] Shutdown requested. Exit ThreadImport
2020-04-27T19:34:32Z [qt-init] Interrupting HTTP server
...
```
ACKs for top commit:
laanwj:
Code review ACK faec3dc2adc487af97c22408f9f0bfe33f44a230
hebasto:
ACK faec3dc2adc487af97c22408f9f0bfe33f44a230, tested on Linux Mint 19.3 (x86_64) both `bitcoind` and `bitcoin-qt` binaries.
Tree-SHA512: e105af18d98296d82ec99f48e478cf44577e3c32f7e4b47617a7bc7cbf71d6becb92722f229a1be38d58ad29712704509ad9740d8ab8cd3104cf90057664b437
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Per BIP 141, the witness commitment structure is atleast 38 bytes,
OP_RETURN (0x6a) + 36 (0x24) + 4 byte header (0xaa21a9ed) + 32 byte
SHA256 hash. It can be longer, however any additional data has no
consensus meaning.
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I'd previously attempted to create a specialized lock for ChainstateManager,
but it turns out that because that lock would be required for functions like
ChainActive() and ChainstateActive(), it created irreconcilable lock inversions
since those functions are used so broadly throughout the codebase.
Instead, I'm just using cs_main to protect the contents of g_chainman.
Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
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This allows us to easily initialize multiple chainstates on startup in future
commits. It retires the g_chainstate global in lieu of g_chainman.
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This is in preparation for multiple chainstate initialization in init.
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ChainstateManager is responsible for creating and managing multiple
chainstates, and will provide a high-level interface for accessing the
appropriate chainstate based upon a certain use.
Incorporates feedback from Marco Falke. Additional documentation written
by Russ Yanofsky.
Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
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This parameter is unused, but in future commits will allow ChainstateManager to
differentiate between chainstates created from a UTXO snapshot from those that
weren't.
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-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
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-BEGIN VERIFY SCRIPT-
# Delete outdated alias for RecursiveMutex
sed -i -e '/CCriticalSection/d' ./src/sync.h
# Replace use of outdated alias with RecursiveMutex
sed -i -e 's/CCriticalSection/RecursiveMutex/g' $(git grep -l CCriticalSection)
-END VERIFY SCRIPT-
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This separates out some logic for detecting how full the coins cache is from
FlushStateToDisk. We'll want to reuse this logic when deciding when to flush
the coins cache during UTXO snapshot activation.
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Commit d449772cf69c01932fc5d72c46054815d6300b3c stopped setting
COINBASE_FLAGS, and it looks like it hasn't been used since P2SH.
Update the help string to remove "flags", which is not specified in
BIP 22.
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5506ecfe7a65d5705616bc048f2f1735b89993fb [refactor] Replace global int nScriptCheckThreads with bool (John Newbery)
d9957623b48a7c3eff0ac750d1245fabfb1843a2 [tests] Don't use TestingSetup in the checkqueue_tests (John Newbery)
Pull request description:
The meaning of this value is confusing. Refactor it and add comments.
ACKs for top commit:
sipa:
ACK 5506ecfe7a65d5705616bc048f2f1735b89993fb
promag:
ACK 5506ecfe7a65d5705616bc048f2f1735b89993fb, only change was addressing my nits.
laanwj:
Code review ACK 5506ecfe7a65d5705616bc048f2f1735b89993fb
MarcoFalke:
ACK 5506ecfe7a65d5705616bc048f2f1735b89993fb 🥐
Tree-SHA512: 78536727c98d2c23f3c0f3f169131474fef9a4486ae65029011caf06eab30f6f70ff73a65b2fb04a5d969fc1150858d1c6ea4767f04d48c1eea6b829316d0e63
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The global nScriptCheckThreads int is confusing and is only needed for
its int-ness in AppInitMain. Move all `-par` parsing logic there and
replace the int nScriptCheckThreads with a bool
g_parallel_script_checks.
Also tidy up logic and improve comments.
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92b2f5306ba0b3f031293cb8f415b67cb002c2f1 test: add dumptxoutset RPC test (James O'Beirne)
c1ccbc3ddef931896a7e9dcfa6704e305a69fbff devtools: add utxo_snapshot.sh (James O'Beirne)
57cf74c9918d10c69a46e6ceb3cb1a5e04edf5bc rpc: add dumptxoutset (James O'Beirne)
92fafb3a7da66f737e960e541fcfbcadedf6043a coinstats: add coins_count (James O'Beirne)
707fde7b9ba522c22179e2db0ed7b462c65138d9 add unused SnapshotMetadata class (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 defines the serialization format for UTXO snapshots and adds an RPC command for creating them, `dumptxoutset`. It also adds a convenience script for generating and verifying snapshots at a certain height, since that requires doing a hacky rewind of the chain via `invalidateblock`.
All of this is unused at the moment.
ACKs for top commit:
laanwj:
ACK 92b2f5306ba0b3f031293cb8f415b67cb002c2f1
Tree-SHA512: 200dff87767f157d627e99506ec543465d9329860a6cd49363081619c437163a640a46d008faa92b1f44fd403bfc7a7c9e851c658b5a4849efa9a34ca976bf31
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Handle this failure in the same way as all other failures: call Invalid()
with the reasons for the failure.
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No callers use the returned value in first_invalid. Remove it from the
function signature and don't set it in the function.
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Split CValidationState into TxValidationState and BlockValidationState
to store validation results for transactions and blocks respectively.
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9075d13153ce06cd59a45644831ecc43126e1e82 [docs] Add release notes for removal of REJECT reasons (John Newbery)
04a2f326ec0f06fb4fce1c4f93500752f05dede8 [validation] Fix REJECT message comments (John Newbery)
e9d5a59e34ff2d538d8f5315efd9908bf24d0fdc [validation] Remove REJECT code from CValidationState (John Newbery)
0053e16714323c1694c834fdca74f064a1a33529 [logging] Don't log REJECT code when transaction is rejected (John Newbery)
a1a07cfe99fc8cee30ba5976dc36b47b1f6532ab [validation] Fix peer punishment for bad blocks (John Newbery)
Pull request description:
We no longer send BIP 61 REJECT messages, so there's no need to set
a REJECT code in the CValidationState object.
Note that there is a minor bug fix in p2p behaviour here. Because the
call to `MaybePunishNode()` in `PeerLogicValidation::BlockChecked()` only
previously happened if the REJECT code was > 0 and < `REJECT_INTERNAL`,
then there are cases were `MaybePunishNode()` can get called where it
wasn't previously:
- when `AcceptBlockHeader()` fails with `CACHED_INVALID`.
- when `AcceptBlockHeader()` fails with `BLOCK_MISSING_PREV`.
Note that `BlockChecked()` cannot fail with an 'internal' reject code. The
only internal reject code was `REJECT_HIGHFEE`, which was only set in
ATMP.
This reverts a minor bug introduced in 5d08c9c579ba8cc7b684105c6a08263992b08d52.
ACKs for top commit:
ariard:
ACK 9075d13, changes since last reviewed are splitting them in separate commits to ease understanding and fix nits
fjahr:
ACK 9075d13153ce06cd59a45644831ecc43126e1e82, confirmed diff to last review was fixing nits in docs/comments.
ryanofsky:
Code review ACK 9075d13153ce06cd59a45644831ecc43126e1e82. Only changes since last review are splitting the main commit and updating comments
Tree-SHA512: 58e8a1a4d4e6f156da5d29fb6ad6a62fc9c594bbfc6432b3252e962d0e9e10149bf3035185dc5320c46c09f3e49662bc2973ec759679c0f3412232087cb8a3a7
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We no longer send BIP 61 REJECT messages, so there's no need to set
a REJECT code in the CValidationState object.
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