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init: add utxo snapshot detection

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Add functionality for activating a snapshot-based chainstate if one is
detected on-disk.

Also cautiously initialize chainstate cache usages so that we don't
somehow blow past our cache allowances during initialization, then
rebalance at the end of init.

Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
This commit is contained in:
James O'Beirne
2022-04-20 17:40:01 -04:00
parent f9f1735f13
commit 252abd1e8b
7 changed files with 87 additions and 34 deletions
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6
src/test/validation_chainstatemanager_tests.cpp
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@@ -63,7 +63,7 @@ BOOST_AUTO_TEST_CASE(chainstatemanager)
// Create a snapshot-based chainstate.
//
const uint256 snapshot_blockhash = GetRandHash();
Chainstate& c2 = WITH_LOCK(::cs_main, return manager.InitializeChainstate(
Chainstate& c2 = WITH_LOCK(::cs_main, return manager.ActivateExistingSnapshot(
&mempool, snapshot_blockhash));
chainstates.push_back(&c2);
@@ -133,7 +133,7 @@ BOOST_AUTO_TEST_CASE(chainstatemanager_rebalance_caches)
// Create a snapshot-based chainstate.
//
Chainstate& c2 = WITH_LOCK(cs_main, return manager.InitializeChainstate(&mempool, GetRandHash()));
Chainstate& c2 = WITH_LOCK(cs_main, return manager.ActivateExistingSnapshot(&mempool, GetRandHash()));
chainstates.push_back(&c2);
c2.InitCoinsDB(
/*cache_size_bytes=*/1 << 23, /*in_memory=*/true, /*should_wipe=*/false);
@@ -383,7 +383,7 @@ BOOST_FIXTURE_TEST_CASE(chainstatemanager_loadblockindex, TestChain100Setup)
BOOST_CHECK_EQUAL(expected_assumed_valid, num_assumed_valid);
Chainstate& cs2 = WITH_LOCK(::cs_main,
return chainman.InitializeChainstate(&mempool, GetRandHash()));
return chainman.ActivateExistingSnapshot(&mempool, GetRandHash()));
reload_all_block_indexes();