1  // Copyright (c) 2022-present The Bitcoin Core developers
 2  // Distributed under the MIT software license, see the accompanying
 3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 4  #ifndef BITCOIN_KERNEL_MEMPOOL_LIMITS_H
 5  #define BITCOIN_KERNEL_MEMPOOL_LIMITS_H
 6  
 7  #include <policy/policy.h>
 8  
 9  #include <cstdint>
10  
11  namespace kernel {
12  /**
13   * Options struct containing limit options for a CTxMemPool. Default constructor
14   * populates the struct with sane default values which can be modified.
15   *
16   * Most of the time, this struct should be referenced as CTxMemPool::Limits.
17   */
18  struct MemPoolLimits {
19      //! The maximum number of transactions in a cluster
20      unsigned cluster_count{DEFAULT_CLUSTER_LIMIT};
21      //! The maximum allowed size in virtual bytes of a cluster.
22      int64_t cluster_size_vbytes{DEFAULT_CLUSTER_SIZE_LIMIT_KVB * 1'000};
23      //! The maximum allowed number of transactions in a package including the entry and its ancestors.
24      int64_t ancestor_count{DEFAULT_ANCESTOR_LIMIT};
25      //! The maximum allowed number of transactions in a package including the entry and its descendants.
26      int64_t descendant_count{DEFAULT_DESCENDANT_LIMIT};
27  
28      /**
29       * @return MemPoolLimits with all the limits set to the maximum
30       */
31      static constexpr MemPoolLimits NoLimits()
32      {
33          int64_t no_limit{std::numeric_limits<int64_t>::max()};
34          return {std::numeric_limits<unsigned>::max(), no_limit, no_limit, no_limit};
35      }
36  };
37  } // namespace kernel
38  
39  #endif // BITCOIN_KERNEL_MEMPOOL_LIMITS_H