mirror of https://github.com/bitcoin/bitcoin.git
35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
// Copyright (c) 2022 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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#include <node/validation_cache_args.h>
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#include <kernel/validation_cache_sizes.h>
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#include <common/args.h>
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#include <algorithm>
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#include <cstddef>
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#include <cstdint>
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#include <memory>
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#include <optional>
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using kernel::ValidationCacheSizes;
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namespace node {
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void ApplyArgsManOptions(const ArgsManager& argsman, ValidationCacheSizes& cache_sizes)
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{
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if (auto max_size = argsman.GetIntArg("-maxsigcachesize")) {
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// 1. When supplied with a max_size of 0, both InitSignatureCache and
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// InitScriptExecutionCache create the minimum possible cache (2
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// elements). Therefore, we can use 0 as a floor here.
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// 2. Multiply first, divide after to avoid integer truncation.
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size_t clamped_size_each = std::max<int64_t>(*max_size, 0) * (1 << 20) / 2;
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cache_sizes = {
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.signature_cache_bytes = clamped_size_each,
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.script_execution_cache_bytes = clamped_size_each,
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};
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}
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}
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} // namespace node
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