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Add CChainState::ResizeCoinsCaches

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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.
This commit is contained in:
James O'Beirne
2019-09-16 15:01:12 -04:00
committed by James O'Beirne
parent b223111da2
commit f36aaa6392
8 changed files with 73 additions and 16 deletions
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11
src/test/validation_chainstatemanager_tests.cpp
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@@ -28,13 +28,11 @@ BOOST_AUTO_TEST_CASE(chainstatemanager)
// Create a legacy (IBD) chainstate.
//
ENTER_CRITICAL_SECTION(cs_main);
CChainState& c1 = manager.InitializeChainstate();
LEAVE_CRITICAL_SECTION(cs_main);
CChainState& c1 = *WITH_LOCK(::cs_main, return &manager.InitializeChainstate());
chainstates.push_back(&c1);
c1.InitCoinsDB(
/* cache_size_bytes */ 1 << 23, /* in_memory */ true, /* should_wipe */ false);
WITH_LOCK(::cs_main, c1.InitCoinsCache());
WITH_LOCK(::cs_main, c1.InitCoinsCache(1 << 23));
BOOST_CHECK(!manager.IsSnapshotActive());
BOOST_CHECK(!manager.IsSnapshotValidated());
@@ -57,12 +55,13 @@ BOOST_AUTO_TEST_CASE(chainstatemanager)
// Create a snapshot-based chainstate.
//
ENTER_CRITICAL_SECTION(cs_main);
CChainState& c2 = manager.InitializeChainstate(GetRandHash());
CChainState& c2 = *WITH_LOCK(::cs_main,
return &manager.InitializeChainstate(GetRandHash()));
LEAVE_CRITICAL_SECTION(cs_main);
chainstates.push_back(&c2);
c2.InitCoinsDB(
/* cache_size_bytes */ 1 << 23, /* in_memory */ true, /* should_wipe */ false);
WITH_LOCK(::cs_main, c2.InitCoinsCache());
WITH_LOCK(::cs_main, c2.InitCoinsCache(1 << 23));
// Unlike c1, which doesn't have any blocks. Gets us different tip, height.
c2.LoadGenesisBlock(chainparams);
BlockValidationState _;