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fac07f2038
Currently it is an alias to the global ::mempool and should be used as follows. * Node code (validation and transaction relay) can use either ::mempool or node.mempool, whichever seems a better fit. * RPC code should use the added convenience getter EnsureMempool, which makes sure the mempool exists before use. This prepares the RPC code to a future where the mempool might be disabled at runtime or compile time. * Test code should use m_node.mempool directly, as the mempool is always initialized for tests.
46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
// Copyright (c) 2019 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_NODE_CONTEXT_H
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#define BITCOIN_NODE_CONTEXT_H
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#include <memory>
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#include <vector>
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class BanMan;
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class CConnman;
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class CTxMemPool;
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class PeerLogicValidation;
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namespace interfaces {
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class Chain;
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class ChainClient;
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} // namespace interfaces
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//! NodeContext struct containing references to chain state and connection
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//! state.
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//!
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//! This is used by init, rpc, and test code to pass object references around
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//! without needing to declare the same variables and parameters repeatedly, or
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//! to use globals. More variables could be added to this struct (particularly
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//! references to validation objects) to eliminate use of globals
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//! and make code more modular and testable. The struct isn't intended to have
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//! any member functions. It should just be a collection of references that can
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//! be used without pulling in unwanted dependencies or functionality.
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struct NodeContext {
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std::unique_ptr<CConnman> connman;
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CTxMemPool* mempool{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
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std::unique_ptr<PeerLogicValidation> peer_logic;
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std::unique_ptr<BanMan> banman;
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std::unique_ptr<interfaces::Chain> chain;
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std::vector<std::unique_ptr<interfaces::ChainClient>> chain_clients;
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//! Declare default constructor and destructor that are not inline, so code
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//! instantiating the NodeContext struct doesn't need to #include class
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//! definitions for all the unique_ptr members.
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NodeContext();
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~NodeContext();
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};
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#endif // BITCOIN_NODE_CONTEXT_H
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