context.h

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// Copyright (c) 2020-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_WALLET_CONTEXT_H
#define BITCOIN_WALLET_CONTEXT_H
 
#include <sync.h>
 
#include <functional>
#include <list>
#include <memory>
#include <vector>
 
class ArgsManager;
namespace interfaces {
class Chain;
class Wallet;
} // namespace interfaces
 
namespace wallet {
class CWallet;
using LoadWalletFn = std::function<void(std::unique_ptr<interfaces::Wallet> wallet)>;
 
struct WalletContext {
    interfaces::Chain* chain{nullptr};
    ArgsManager* args{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
    // It is unsafe to lock this after locking a CWallet::cs_wallet mutex because
    // this could introduce inconsistent lock ordering and cause deadlocks.
    Mutex wallets_mutex;
    std::vector<std::shared_ptr<CWallet>> wallets GUARDED_BY(wallets_mutex);
    std::list<LoadWalletFn> wallet_load_fns GUARDED_BY(wallets_mutex);
 
    WalletContext();
    ~WalletContext();
};
} // namespace wallet
 
#endif // BITCOIN_WALLET_CONTEXT_H