From f36aaa6392fdbdac6891d92202d3efeff98754f4 Mon Sep 17 00:00:00 2001 From: James O'Beirne Date: Mon, 16 Sep 2019 15:01:12 -0400 Subject: Add CChainState::ResizeCoinsCaches 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. --- src/coins.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/coins.cpp') diff --git a/src/coins.cpp b/src/coins.cpp index 7b76c13f98..5de2ed7810 100644 --- a/src/coins.cpp +++ b/src/coins.cpp @@ -245,6 +245,14 @@ bool CCoinsViewCache::HaveInputs(const CTransaction& tx) const return true; } +void CCoinsViewCache::ReallocateCache() +{ + // Cache should be empty when we're calling this. + assert(cacheCoins.size() == 0); + cacheCoins.~CCoinsMap(); + ::new (&cacheCoins) CCoinsMap(); +} + static const size_t MIN_TRANSACTION_OUTPUT_WEIGHT = WITNESS_SCALE_FACTOR * ::GetSerializeSize(CTxOut(), PROTOCOL_VERSION); static const size_t MAX_OUTPUTS_PER_BLOCK = MAX_BLOCK_WEIGHT / MIN_TRANSACTION_OUTPUT_WEIGHT; -- cgit v1.2.3