refactor: move evodb out from chainstate - #7603
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The mempool must be able to hold CInstantSendManager for its whole lifetime, but as an LLMQContext member isman was destroyed and recreated together with the LLMQ subsystem (chainstate reload, snapshot completion), enforcing the work-around with ConnectManagers/DisconnectManagers. CInstantSendManager only needs CSporkManager and its own database, so nothing ties it to the LLMQ context's lifetime.
ConnectManagers/DisconnectManagers existed only because the mempool was constructed before isman / dmnman. Now that dmnman and isman are alive before the mempool and ConnectManagers could be just removed.
Every CTxMemPool construction now provides dmnman and isman (init's retry loop builds them first; MemPoolOptionsForTest fills them from the fixture, which always creates both), so the null checks and per-use Asserts inherited from the ConnectManagers era guard a state that can no longer occur. Turn the members into references, asserted once at construction, and drop the dead branches along with the @pre comments and the redundant dmnman parameter of addUncheckedProTx. The Options fields stay pointers with a nullptr default because the options struct is an aggregate initialized field-by-field; the requirement is therefore enforced by the constructor assert rather than the type, and a future construction site that forgets the managers fails loudly on startup instead of silently losing ProTx/InstantSend handling.
BlockAssembler carried its own CInstantSendManager reference for a single check even though its CChainstateHelper already holds the manager and has a dedicated passthrough section for it. Route the check through two new passthroughs and drop the extra member and the NodeContext::isman dependency from the miner.
Potential PR merge conflictsThis is advisory only. It does not block CI, but it marks PRs that will likely need a rebase depending on merge order. If this PR merges firstThese open PRs will likely need a rebase:
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⛔ Blockers found — Opus deferred (commit f03d485) |
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WalkthroughThe change moves Estimated code review effort: 4 (Complex) | ~45 minutes Mergeability Score: ⚪ Minimal · up to This refactor changes initialization ownership and dependency wiring without any identified current-head merge-blocking risk; it is merge-ready after normal checks and review. Sequence Diagram(s)sequenceDiagram
participant NodeContext
participant init.cpp
participant LoadChainstate
participant CTxMemPool
participant PeerManager
NodeContext->>init.cpp: create isman, evodb, and dmnman
init.cpp->>CTxMemPool: construct with manager dependencies
init.cpp->>LoadChainstate: pass shared manager references
init.cpp->>PeerManager: pass isman reference
Possibly related PRs
Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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In `@src/init.cpp`:
- Around line 1951-1959: In the retry cleanup sequence, reset node.chain_helper
and node.llmq_ctx immediately after node.mempool.reset() and before resetting
node.isman, node.dmnman, or node.evodb. Preserve the existing manager recreation
order and mirror the established shutdown dependency order.
In `@src/net_processing.cpp`:
- Around line 2322-2323: Update PeerManagerImpl to receive and store a direct
CInstantSendManager dependency, then replace every listed m_llmq_ctx->isman
access—including the IsWaitingForTx and IsLocked calls—with that node-owned
manager. Remove all reliance on LLMQContext::isman while preserving the existing
InstantSend behavior.
In `@src/test/validation_chainstatemanager_tests.cpp`:
- Around line 61-67: Update the test setup to remove the InstantSend dependency
from LLMQContext construction, and pass *Assert(node.isman.get()) directly to
CChainstateHelper instead of accessing node.llmq_ctx->isman. Preserve the
existing initialization order and other constructor arguments.
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📒 Files selected for processing (26)
src/bench/rpc_blockchain.cppsrc/bitcoin-chainstate.cppsrc/init.cppsrc/kernel/mempool_options.hsrc/llmq/context.cppsrc/llmq/context.hsrc/net_processing.cppsrc/node/chainstate.cppsrc/node/chainstate.hsrc/node/context.cppsrc/node/context.hsrc/node/interfaces.cppsrc/node/miner.cppsrc/rest.cppsrc/rpc/blockchain.cppsrc/rpc/mempool.cppsrc/rpc/rawtransaction.cppsrc/rpc/server_util.cppsrc/rpc/server_util.hsrc/test/coinjoin_inouts_tests.cppsrc/test/evo_deterministicmns_tests.cppsrc/test/util/setup_common.cppsrc/test/util/txmempool.cppsrc/test/validation_chainstatemanager_tests.cppsrc/txmempool.cppsrc/txmempool.h
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- src/test/evo_deterministicmns_tests.cpp
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| node.evodb = std::make_unique<CEvoDB>(util::DbWrapperParams{.path = args.GetDataDirNet(), .memory = false, .wipe = node::fReindex || fReindexChainState}); | ||
| node.dmnman = std::make_unique<CDeterministicMNManager>(*node.evodb, *node.mn_metaman); | ||
| node.isman = std::make_unique<llmq::CInstantSendManager>(*node.sporkman, util::DbWrapperParams{.path = args.GetDataDirNet(), .memory = false, .wipe = node::fReindex || fReindexChainState}); |
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When evodb or the InstantSend DB is corrupt or still has a stale LevelDB lock, these constructors can throw dbwrapper_error, but they now run before the catch_exceptions wrapper below is entered. Before this refactor the EvoDB open happened inside LoadChainstate(), so startup converted the error into a recoverable block-database failure and could offer the reindex prompt; now the exception escapes to the outer AppInit catch and the node exits with only a generic initialization failure for those datadir states.
AGENTS.md reference: AGENTS.md:L170-L172
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LLMQContext never used the InstantSend manager itself; the reference member existed only so consumers could reach isman through the context. With NodeContext owning isman that indirection is gone: PeerManagerImpl receives its own reference (making ProcessGetBlockData's isman parameter redundant), the chainstate helper is constructed from options.isman directly, and the LLMQContext constructor loses the parameter.
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| if (auto dmnman = m_dmnman.load(std::memory_order_acquire); dmnman) { | ||
| addUncheckedProTx(*dmnman, newit, tx); | ||
| } | ||
| addUncheckedProTx(newit, tx); |
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When the compact-block fuzz target puts an arbitrary deserialized transaction into its local pool (src/test/fuzz/partially_downloaded_block.cpp:71-73), it bypasses AcceptToMemoryPool(), so a fuzzed special-tx nType can have a missing or invalid ProTx payload. This new unconditional call sends those entries into addUncheckedProTx(), which immediately Assert(GetTxPayload<...>) or asserts a masternode lookup for ProTx update types, causing the fuzz target to abort before it exercises compact-block reconstruction; before this refactor that local pool never called ConnectManagers(), so ProTx metadata handling was skipped for these direct-add fuzz inputs.
AGENTS.md reference: AGENTS.md:L166-L168
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| if (auto dmnman = m_dmnman.load(std::memory_order_acquire); dmnman) { | ||
| addUncheckedProTx(*dmnman, newit, tx); | ||
| } | ||
| addUncheckedProTx(newit, tx); |
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When the compact-block fuzz target puts an arbitrary deserialized transaction into its local pool (src/test/fuzz/partially_downloaded_block.cpp:71-73), it bypasses AcceptToMemoryPool(), so a fuzzed special-tx nType can have a missing or invalid ProTx payload. This new unconditional call sends those entries into addUncheckedProTx(), which immediately Assert(GetTxPayload<...>) or asserts a masternode lookup for ProTx update types, causing the fuzz target to abort before it exercises compact-block reconstruction; before this refactor that local pool never called ConnectManagers(), so ProTx metadata handling was skipped for these direct-add fuzz inputs.
AGENTS.md reference: AGENTS.md:L166-L168
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Preliminary review — Codex only
The manager-lifetime refactor introduces two regressions: Dash database constructors now bypass the recoverable chainstate-loading exception path, and the compact-block fuzz target now sends arbitrary special transactions through ProTx bookkeeping that assumes prior validation. Both issues should be fixed before merge; the CodeRabbit lifetime warning does not identify a new unsafe dereference and describes the removed LLMQContext::isman relationship.
Source: reviewer backend model gpt-5.6-sol; final verifier backend model gpt-5.6-sol. Orchestration only: openclaw-agent/cliproxy/gpt-5.6-sol (not reviewer evidence).
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 2 blocking
1 additional finding(s) omitted (not in diff).
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In `src/init.cpp`:
- [BLOCKING] src/init.cpp:1957-1959: Keep Dash database opens inside the recoverable startup path
The `CEvoDB` and `CInstantSendManager` constructors both open LevelDB databases and can throw `dbwrapper_error`, but these calls now run before the `catch_exceptions` boundary at lines 2013-2021. Before this refactor, EvoDB was opened inside `LoadChainstate()` and the InstantSend database was opened while constructing `LLMQContext` there, so an open or corruption error became `ChainstateLoadStatus::FAILURE` and followed the normal reindex-recovery prompt. At the current location, the exception escapes `AppInitMain()` to the outer application catch in `bitcoind.cpp`, terminating startup with a generic initialization failure instead. Construct these database-backed managers, followed by the mempool that references them, within the same exception boundary used for `LoadChainstate()` so database failures retain the established recovery flow.
In `src/test/fuzz/partially_downloaded_block.cpp`:
- [BLOCKING] src/test/fuzz/partially_downloaded_block.cpp:71-74: Do not directly add arbitrary special transactions to the fuzz mempool
This target deserializes arbitrary block transactions and inserts them through `addUnchecked()`, bypassing `AcceptToMemoryPool()` and all special-transaction validation. The PR makes the test mempool hold Dash managers and changes `addUnchecked()` to call `addUncheckedProTx()` unconditionally. A fuzzed provider or asset-unlock type with a malformed or missing payload therefore reaches `Assert(GetTxPayload<...>)`; provider registrar/revoke updates can also assert when their masternode does not exist. This aborts ordinary fuzz input before compact-block reconstruction is exercised. Restrict this unchecked insertion path to normal transactions, whose invariants the target can satisfy.
| node.evodb = std::make_unique<CEvoDB>(util::DbWrapperParams{.path = args.GetDataDirNet(), .memory = false, .wipe = node::fReindex || fReindexChainState}); | ||
| node.dmnman = std::make_unique<CDeterministicMNManager>(*node.evodb, *node.mn_metaman); | ||
| node.isman = std::make_unique<llmq::CInstantSendManager>(*node.sporkman, util::DbWrapperParams{.path = args.GetDataDirNet(), .memory = false, .wipe = node::fReindex || fReindexChainState}); |
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🔴 Blocking: Keep Dash database opens inside the recoverable startup path
The CEvoDB and CInstantSendManager constructors both open LevelDB databases and can throw dbwrapper_error, but these calls now run before the catch_exceptions boundary at lines 2013-2021. Before this refactor, EvoDB was opened inside LoadChainstate() and the InstantSend database was opened while constructing LLMQContext there, so an open or corruption error became ChainstateLoadStatus::FAILURE and followed the normal reindex-recovery prompt. At the current location, the exception escapes AppInitMain() to the outer application catch in bitcoind.cpp, terminating startup with a generic initialization failure instead. Construct these database-backed managers, followed by the mempool that references them, within the same exception boundary used for LoadChainstate() so database failures retain the established recovery flow.
source: ['codex']
PastaPastaPasta
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utACK — reviewed with specific attention to the AssumeUTXO snapshot lifecycle this reorders around, since the in-flight M4 series (#7592/#7593/#7601) rebases onto it:
- The EvoDB wipe decision now happens at construction in init.cpp, before
dmnmanexists, so no manager can observe pre-wipe state;RecoverSnapshotCleanupkeeps its position and skip-guards insideLoadChainstate. - The retry loop destroys the mempool first and reconstructs evodb → dmnman → isman → mempool in dependency order, so the raw manager pointers the mempool now takes at construction have no dangling window on a reindex retry.
- Persisted-snapshot startup (
DetectSnapshotChainstate/ActivateExistingSnapshot) still receives a fully wired mempool, and removing theConnectManagers/DisconnectManagerslate-wiring eliminates the fragile step the snapshot-activation path would otherwise have had to re-run — this makes the M4 series' load integration simpler, not harder.
The M4 draft stack will be re-integrated on top of this once it merges; the overlaps (node/chainstate.cpp, chainhelper) are textual, not directional.
🤖 Posted autonomously by Claude on behalf of pasta.
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Issue being fixed or feature implemented
CTxMempool initialization is reversed with
ismananddmnman- it is created before them but depends on them.Proper initialization happens with late
ConnectManagerscall that is fragile option.What was done?
std::unique_ptr<T>&from data flow initialization (dmnman from chainstate)How Has This Been Tested?
Run unit & functional tests
Breaking Changes
N/A
Checklist: