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8aa21e119b
Keep the total database cache bounds with `kernel::CacheSizes` so node and Kernel callers validate against the same range.
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
// Copyright (c) 2024-present The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_KERNEL_CACHES_H
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#define BITCOIN_KERNEL_CACHES_H
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#include <util/byte_units.h>
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#include <algorithm>
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#include <cstdint>
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#include <limits>
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//! Minimum total database cache (bytes)
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static constexpr uint64_t MIN_DBCACHE_BYTES{4_MiB};
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//! Maximum total database cache on current architecture (bytes)
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static constexpr uint64_t MAX_DBCACHE_BYTES{sizeof(void*) == 4 ? 1_GiB : std::numeric_limits<uint64_t>::max()};
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//! Suggested default amount of cache reserved for the kernel (bytes)
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static constexpr uint64_t DEFAULT_KERNEL_CACHE{450_MiB};
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//! Default LevelDB write batch size
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static constexpr uint64_t DEFAULT_DB_CACHE_BATCH{32_MiB};
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//! Max memory allocated to block tree DB specific cache (bytes)
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static constexpr uint64_t MAX_BLOCK_DB_CACHE{2_MiB};
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//! Max memory allocated to coin DB specific cache (bytes)
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static constexpr uint64_t MAX_COINS_DB_CACHE{8_MiB};
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namespace kernel {
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struct CacheSizes {
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uint64_t block_tree_db;
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uint64_t coins_db;
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uint64_t coins;
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CacheSizes(uint64_t total_cache)
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{
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block_tree_db = std::min(total_cache / 8, MAX_BLOCK_DB_CACHE);
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total_cache -= block_tree_db;
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coins_db = std::min(total_cache / 2, MAX_COINS_DB_CACHE);
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total_cache -= coins_db;
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coins = total_cache; // the rest goes to the coins cache
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}
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};
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} // namespace kernel
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#endif // BITCOIN_KERNEL_CACHES_H
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