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validation: make CChainState::m_mempool optional

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Since we now have multiple chainstate objects, only one of them is active at any given
time. An active chainstate has a mempool, but there's no point to others having one.

This change will simplify proposed assumeutxo semantics. See the discussion here:
https://github.com/bitcoin/bitcoin/pull/15606#pullrequestreview-692965905

Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
This commit is contained in:
James O'Beirne
2021-07-06 17:05:25 -04:00
parent 088b348dbe
commit 617661703a
7 changed files with 64 additions and 40 deletions
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2
src/test/util/setup_common.cpp
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@@ -180,7 +180,7 @@ TestingSetup::TestingSetup(const std::string& chainName, const std::vector<const
// instead of unit tests, but for now we need these here.
RegisterAllCoreRPCCommands(tableRPC);
m_node.chainman->InitializeChainstate(*m_node.mempool);
m_node.chainman->InitializeChainstate(m_node.mempool.get());
m_node.chainman->ActiveChainstate().InitCoinsDB(
/* cache_size_bytes */ 1 << 23, /* in_memory */ true, /* should_wipe */ false);
assert(!m_node.chainman->ActiveChainstate().CanFlushToDisk());