Merge bitcoin/bitcoin#19101: refactor: remove ::vpwallets and related global variables

62a09a30772141ef4add2f10d29927211abf57eb refactor: remove ::vpwallets and related global variables (Russell Yanofsky)

Pull request description:

  Get rid of global wallet list variables by moving them to WalletContext struct

  - [`cs_wallets`](https://github.com/bitcoin/bitcoin/blob/e638acf6970394f8eb1957366ad2d39512f33b31/src/wallet/wallet.cpp#L56) is now [`WalletContext::wallet_mutex`](https://github.com/ryanofsky/bitcoin/blob/4be544c7ec08a81952fd3f4349151cbb8bdb60e8/src/wallet/context.h#L37)
  - [`vpwallets`](https://github.com/bitcoin/bitcoin/blob/e638acf6970394f8eb1957366ad2d39512f33b31/src/wallet/wallet.cpp#L57) is now [`WalletContext::wallets`](https://github.com/ryanofsky/bitcoin/blob/4be544c7ec08a81952fd3f4349151cbb8bdb60e8/src/wallet/context.h#L38)
  - [`g_load_wallet_fns`](https://github.com/bitcoin/bitcoin/blob/e638acf6970394f8eb1957366ad2d39512f33b31/src/wallet/wallet.cpp#L58) is now [`WalletContext::wallet_load_fns`](https://github.com/ryanofsky/bitcoin/blob/4be544c7ec08a81952fd3f4349151cbb8bdb60e8/src/wallet/context.h#L39)

ACKs for top commit:
  achow101:
    ACK 62a09a30772141ef4add2f10d29927211abf57eb
  meshcollider:
    re-utACK 62a09a30772141ef4add2f10d29927211abf57eb

Tree-SHA512: 74428180d57b4214c3d96963e6ff43e8778f6f23b6880262d1272f2de67d02714fdc3ebb558f62e48655b221a642c36f80ef37c8f89d362e2d66fd93cbf03b8f

13 files changed, 167 insertions, 127 deletions

diff --git a/src/interfaces/wallet.h b/src/interfaces/wallet.h
index fb1febc11b..a85db04b8b 100644
--- a/src/interfaces/wallet.h
+++ b/src/interfaces/wallet.h
@@ -332,6 +332,9 @@ public:
    //! loaded at startup or by RPC.
    using LoadWalletFn = std::function<void(std::unique_ptr<Wallet> wallet)>;
    virtual std::unique_ptr<Handler> handleLoadWallet(LoadWalletFn fn) = 0;
+
+   //! Return pointer to internal context, useful for testing.
+   virtual WalletContext* context() { return nullptr; }
 };
 
 //! Information about one wallet address.
@@ -410,7 +413,7 @@ struct WalletTxOut
 
 //! Return implementation of Wallet interface. This function is defined in
 //! dummywallet.cpp and throws if the wallet component is not compiled.
-std::unique_ptr<Wallet> MakeWallet(const std::shared_ptr<CWallet>& wallet);
+std::unique_ptr<Wallet> MakeWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet);
 
 //! Return implementation of ChainClient interface for a wallet client. This
 //! function will be undefined in builds where ENABLE_WALLET is false.
diff --git a/src/qt/test/addressbooktests.cpp b/src/qt/test/addressbooktests.cpp
index 39c69fe184..022f367422 100644
--- a/src/qt/test/addressbooktests.cpp
+++ b/src/qt/test/addressbooktests.cpp
@@ -109,9 +109,10 @@ void TestAddAddressesToSendBook(interfaces::Node& node)
     std::unique_ptr<const PlatformStyle> platformStyle(PlatformStyle::instantiate("other"));
     OptionsModel optionsModel;
     ClientModel clientModel(node, &optionsModel);
-    AddWallet(wallet);
-    WalletModel walletModel(interfaces::MakeWallet(wallet), clientModel, platformStyle.get());
-    RemoveWallet(wallet, std::nullopt);
+    WalletContext& context = *node.walletClient().context();
+    AddWallet(context, wallet);
+    WalletModel walletModel(interfaces::MakeWallet(context, wallet), clientModel, platformStyle.get());
+    RemoveWallet(context, wallet, /* load_on_startup= */ std::nullopt);
     EditAddressDialog editAddressDialog(EditAddressDialog::NewSendingAddress);
     editAddressDialog.setModel(walletModel.getAddressTableModel());
 
diff --git a/src/qt/test/wallettests.cpp b/src/qt/test/wallettests.cpp
index e883337fb5..1976bee74b 100644
--- a/src/qt/test/wallettests.cpp
+++ b/src/qt/test/wallettests.cpp
@@ -164,9 +164,10 @@ void TestGUI(interfaces::Node& node)
     TransactionView transactionView(platformStyle.get());
     OptionsModel optionsModel;
     ClientModel clientModel(node, &optionsModel);
-    AddWallet(wallet);
-    WalletModel walletModel(interfaces::MakeWallet(wallet), clientModel, platformStyle.get());
-    RemoveWallet(wallet, std::nullopt);
+    WalletContext& context = *node.walletClient().context();
+    AddWallet(context, wallet);
+    WalletModel walletModel(interfaces::MakeWallet(context, wallet), clientModel, platformStyle.get());
+    RemoveWallet(context, wallet, /* load_on_startup= */ std::nullopt);
     sendCoinsDialog.setModel(&walletModel);
     transactionView.setModel(&walletModel);
 
diff --git a/src/wallet/context.h b/src/wallet/context.h
index a83591154f..a382fb9021 100644
--- a/src/wallet/context.h
+++ b/src/wallet/context.h
@@ -5,11 +5,22 @@
 #ifndef BITCOIN_WALLET_CONTEXT_H
 #define BITCOIN_WALLET_CONTEXT_H
 
+#include <sync.h>
+
+#include <functional>
+#include <list>
+#include <memory>
+#include <vector>
+
 class ArgsManager;
+class CWallet;
 namespace interfaces {
 class Chain;
+class Wallet;
 } // namespace interfaces
 
+using LoadWalletFn = std::function<void(std::unique_ptr<interfaces::Wallet> wallet)>;
+
 //! WalletContext struct containing references to state shared between CWallet
 //! instances, like the reference to the chain interface, and the list of opened
 //! wallets.
@@ -22,7 +33,10 @@ class Chain;
 //! behavior.
 struct WalletContext {
     interfaces::Chain* chain{nullptr};
-    ArgsManager* args{nullptr};
+    ArgsManager* args{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
+    Mutex wallets_mutex;
+    std::vector<std::shared_ptr<CWallet>> wallets GUARDED_BY(wallets_mutex);
+    std::list<LoadWalletFn> wallet_load_fns GUARDED_BY(wallets_mutex);
 
     //! Declare default constructor and destructor that are not inline, so code
     //! instantiating the WalletContext struct doesn't need to #include class
diff --git a/src/wallet/interfaces.cpp b/src/wallet/interfaces.cpp
index 2c891c3c1e..0d4b98ecaf 100644
--- a/src/wallet/interfaces.cpp
+++ b/src/wallet/interfaces.cpp
@@ -110,7 +110,7 @@ WalletTxOut MakeWalletTxOut(const CWallet& wallet,
 class WalletImpl : public Wallet
 {
 public:
-    explicit WalletImpl(const std::shared_ptr<CWallet>& wallet) : m_wallet(wallet) {}
+    explicit WalletImpl(WalletContext& context, const std::shared_ptr<CWallet>& wallet) : m_context(context), m_wallet(wallet) {}
 
     bool encryptWallet(const SecureString& wallet_passphrase) override
     {
@@ -458,7 +458,7 @@ public:
     CAmount getDefaultMaxTxFee() override { return m_wallet->m_default_max_tx_fee; }
     void remove() override
     {
-        RemoveWallet(m_wallet, false /* load_on_start */);
+        RemoveWallet(m_context, m_wallet, false /* load_on_start */);
     }
     bool isLegacy() override { return m_wallet->IsLegacy(); }
     std::unique_ptr<Handler> handleUnload(UnloadFn fn) override
@@ -494,6 +494,7 @@ public:
     }
     CWallet* wallet() override { return m_wallet.get(); }
 
+    WalletContext& m_context;
     std::shared_ptr<CWallet> m_wallet;
 };
 
@@ -505,7 +506,7 @@ public:
         m_context.chain = &chain;
         m_context.args = &args;
     }
-    ~WalletClientImpl() override { UnloadWallets(); }
+    ~WalletClientImpl() override { UnloadWallets(m_context); }
 
     //! ChainClient methods
     void registerRpcs() override
@@ -519,11 +520,11 @@ public:
             m_rpc_handlers.emplace_back(m_context.chain->handleRpc(m_rpc_commands.back()));
         }
     }
-    bool verify() override { return VerifyWallets(*m_context.chain); }
-    bool load() override { return LoadWallets(*m_context.chain); }
-    void start(CScheduler& scheduler) override { return StartWallets(scheduler, *Assert(m_context.args)); }
-    void flush() override { return FlushWallets(); }
-    void stop() override { return StopWallets(); }
+    bool verify() override { return VerifyWallets(m_context); }
+    bool load() override { return LoadWallets(m_context); }
+    void start(CScheduler& scheduler) override { return StartWallets(m_context, scheduler); }
+    void flush() override { return FlushWallets(m_context); }
+    void stop() override { return StopWallets(m_context); }
     void setMockTime(int64_t time) override { return SetMockTime(time); }
 
     //! WalletClient methods
@@ -535,14 +536,14 @@ public:
         options.require_create = true;
         options.create_flags = wallet_creation_flags;
         options.create_passphrase = passphrase;
-        return MakeWallet(CreateWallet(*m_context.chain, name, true /* load_on_start */, options, status, error, warnings));
+        return MakeWallet(m_context, CreateWallet(m_context, name, true /* load_on_start */, options, status, error, warnings));
     }
     std::unique_ptr<Wallet> loadWallet(const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings) override
     {
         DatabaseOptions options;
         DatabaseStatus status;
         options.require_existing = true;
-        return MakeWallet(LoadWallet(*m_context.chain, name, true /* load_on_start */, options, status, error, warnings));
+        return MakeWallet(m_context, LoadWallet(m_context, name, true /* load_on_start */, options, status, error, warnings));
     }
     std::string getWalletDir() override
     {
@@ -559,15 +560,16 @@ public:
     std::vector<std::unique_ptr<Wallet>> getWallets() override
     {
         std::vector<std::unique_ptr<Wallet>> wallets;
-        for (const auto& wallet : GetWallets()) {
-            wallets.emplace_back(MakeWallet(wallet));
+        for (const auto& wallet : GetWallets(m_context)) {
+            wallets.emplace_back(MakeWallet(m_context, wallet));
         }
         return wallets;
     }
     std::unique_ptr<Handler> handleLoadWallet(LoadWalletFn fn) override
     {
-        return HandleLoadWallet(std::move(fn));
+        return HandleLoadWallet(m_context, std::move(fn));
     }
+    WalletContext* context() override  { return &m_context; }
 
     WalletContext m_context;
     const std::vector<std::string> m_wallet_filenames;
@@ -578,7 +580,7 @@ public:
 } // namespace wallet
 
 namespace interfaces {
-std::unique_ptr<Wallet> MakeWallet(const std::shared_ptr<CWallet>& wallet) { return wallet ? std::make_unique<wallet::WalletImpl>(wallet) : nullptr; }
+std::unique_ptr<Wallet> MakeWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet) { return wallet ? std::make_unique<wallet::WalletImpl>(context, wallet) : nullptr; }
 
 std::unique_ptr<WalletClient> MakeWalletClient(Chain& chain, ArgsManager& args)
 {
diff --git a/src/wallet/load.cpp b/src/wallet/load.cpp
index dbf9fd46b6..9009f93dbc 100644
--- a/src/wallet/load.cpp
+++ b/src/wallet/load.cpp
@@ -11,13 +11,15 @@
 #include <util/string.h>
 #include <util/system.h>
 #include <util/translation.h>
+#include <wallet/context.h>
 #include <wallet/wallet.h>
 #include <wallet/walletdb.h>
 
 #include <univalue.h>
 
-bool VerifyWallets(interfaces::Chain& chain)
+bool VerifyWallets(WalletContext& context)
 {
+    interfaces::Chain& chain = *context.chain;
     if (gArgs.IsArgSet("-walletdir")) {
         fs::path wallet_dir = gArgs.GetArg("-walletdir", "");
         boost::system::error_code error;
@@ -87,8 +89,9 @@ bool VerifyWallets(interfaces::Chain& chain)
     return true;
 }
 
-bool LoadWallets(interfaces::Chain& chain)
+bool LoadWallets(WalletContext& context)
 {
+    interfaces::Chain& chain = *context.chain;
     try {
         std::set<fs::path> wallet_paths;
         for (const std::string& name : gArgs.GetArgs("-wallet")) {
@@ -106,13 +109,13 @@ bool LoadWallets(interfaces::Chain& chain)
                 continue;
             }
             chain.initMessage(_("Loading wallet…").translated);
-            std::shared_ptr<CWallet> pwallet = database ? CWallet::Create(&chain, name, std::move(database), options.create_flags, error, warnings) : nullptr;
+            std::shared_ptr<CWallet> pwallet = database ? CWallet::Create(context, name, std::move(database), options.create_flags, error, warnings) : nullptr;
             if (!warnings.empty()) chain.initWarning(Join(warnings, Untranslated("\n")));
             if (!pwallet) {
                 chain.initError(error);
                 return false;
             }
-            AddWallet(pwallet);
+            AddWallet(context, pwallet);
         }
         return true;
     } catch (const std::runtime_error& e) {
@@ -121,41 +124,41 @@ bool LoadWallets(interfaces::Chain& chain)
     }
 }
 
-void StartWallets(CScheduler& scheduler, const ArgsManager& args)
+void StartWallets(WalletContext& context, CScheduler& scheduler)
 {
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets(context)) {
         pwallet->postInitProcess();
     }
 
     // Schedule periodic wallet flushes and tx rebroadcasts
-    if (args.GetBoolArg("-flushwallet", DEFAULT_FLUSHWALLET)) {
-        scheduler.scheduleEvery(MaybeCompactWalletDB, std::chrono::milliseconds{500});
+    if (context.args->GetBoolArg("-flushwallet", DEFAULT_FLUSHWALLET)) {
+        scheduler.scheduleEvery([&context] { MaybeCompactWalletDB(context); }, std::chrono::milliseconds{500});
     }
-    scheduler.scheduleEvery(MaybeResendWalletTxs, std::chrono::milliseconds{1000});
+    scheduler.scheduleEvery([&context] { MaybeResendWalletTxs(context); }, std::chrono::milliseconds{1000});
 }
 
-void FlushWallets()
+void FlushWallets(WalletContext& context)
 {
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets(context)) {
         pwallet->Flush();
     }
 }
 
-void StopWallets()
+void StopWallets(WalletContext& context)
 {
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets(context)) {
         pwallet->Close();
     }
 }
 
-void UnloadWallets()
+void UnloadWallets(WalletContext& context)
 {
-    auto wallets = GetWallets();
+    auto wallets = GetWallets(context);
     while (!wallets.empty()) {
         auto wallet = wallets.back();
         wallets.pop_back();
         std::vector<bilingual_str> warnings;
-        RemoveWallet(wallet, std::nullopt, warnings);
+        RemoveWallet(context, wallet, /* load_on_startup= */ std::nullopt, warnings);
         UnloadWallet(std::move(wallet));
     }
 }
diff --git a/src/wallet/load.h b/src/wallet/load.h
index 7910f0d6e1..e207bc2e09 100644
--- a/src/wallet/load.h
+++ b/src/wallet/load.h
@@ -11,27 +11,28 @@
 
 class ArgsManager;
 class CScheduler;
+struct WalletContext;
 
 namespace interfaces {
 class Chain;
 } // namespace interfaces
 
 //! Responsible for reading and validating the -wallet arguments and verifying the wallet database.
-bool VerifyWallets(interfaces::Chain& chain);
+bool VerifyWallets(WalletContext& context);
 
 //! Load wallet databases.
-bool LoadWallets(interfaces::Chain& chain);
+bool LoadWallets(WalletContext& context);
 
 //! Complete startup of wallets.
-void StartWallets(CScheduler& scheduler, const ArgsManager& args);
+void StartWallets(WalletContext& context, CScheduler& scheduler);
 
 //! Flush all wallets in preparation for shutdown.
-void FlushWallets();
+void FlushWallets(WalletContext& context);
 
 //! Stop all wallets. Wallets will be flushed first.
-void StopWallets();
+void StopWallets(WalletContext& context);
 
 //! Close all wallets.
-void UnloadWallets();
+void UnloadWallets(WalletContext& context);
 
 #endif // BITCOIN_WALLET_LOAD_H
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 2a5b547858..916f811f9b 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -96,14 +96,16 @@ bool GetWalletNameFromJSONRPCRequest(const JSONRPCRequest& request, std::string&
 std::shared_ptr<CWallet> GetWalletForJSONRPCRequest(const JSONRPCRequest& request)
 {
     CHECK_NONFATAL(request.mode == JSONRPCRequest::EXECUTE);
+    WalletContext& context = EnsureWalletContext(request.context);
+
     std::string wallet_name;
     if (GetWalletNameFromJSONRPCRequest(request, wallet_name)) {
-        std::shared_ptr<CWallet> pwallet = GetWallet(wallet_name);
+        std::shared_ptr<CWallet> pwallet = GetWallet(context, wallet_name);
         if (!pwallet) throw JSONRPCError(RPC_WALLET_NOT_FOUND, "Requested wallet does not exist or is not loaded");
         return pwallet;
     }
 
-    std::vector<std::shared_ptr<CWallet>> wallets = GetWallets();
+    std::vector<std::shared_ptr<CWallet>> wallets = GetWallets(context);
     if (wallets.size() == 1) {
         return wallets[0];
     }
@@ -2562,7 +2564,8 @@ static RPCHelpMan listwallets()
 {
     UniValue obj(UniValue::VARR);
 
-    for (const std::shared_ptr<CWallet>& wallet : GetWallets()) {
+    WalletContext& context = EnsureWalletContext(request.context);
+    for (const std::shared_ptr<CWallet>& wallet : GetWallets(context)) {
         LOCK(wallet->cs_wallet);
         obj.push_back(wallet->GetName());
     }
@@ -2580,7 +2583,7 @@ static std::tuple<std::shared_ptr<CWallet>, std::vector<bilingual_str>> LoadWall
     bilingual_str error;
     std::vector<bilingual_str> warnings;
     std::optional<bool> load_on_start = load_on_start_param.isNull() ? std::nullopt : std::optional<bool>(load_on_start_param.get_bool());
-    std::shared_ptr<CWallet> const wallet = LoadWallet(*context.chain, wallet_name, load_on_start, options, status, error, warnings);
+    std::shared_ptr<CWallet> const wallet = LoadWallet(context, wallet_name, load_on_start, options, status, error, warnings);
 
     if (!wallet) {
         // Map bad format to not found, since bad format is returned when the
@@ -2788,7 +2791,7 @@ static RPCHelpMan createwallet()
     options.create_passphrase = passphrase;
     bilingual_str error;
     std::optional<bool> load_on_start = request.params[6].isNull() ? std::nullopt : std::optional<bool>(request.params[6].get_bool());
-    std::shared_ptr<CWallet> wallet = CreateWallet(*context.chain, request.params[0].get_str(), load_on_start, options, status, error, warnings);
+    std::shared_ptr<CWallet> wallet = CreateWallet(context, request.params[0].get_str(), load_on_start, options, status, error, warnings);
     if (!wallet) {
         RPCErrorCode code = status == DatabaseStatus::FAILED_ENCRYPT ? RPC_WALLET_ENCRYPTION_FAILED : RPC_WALLET_ERROR;
         throw JSONRPCError(code, error.original);
@@ -2892,7 +2895,8 @@ static RPCHelpMan unloadwallet()
         wallet_name = request.params[0].get_str();
     }
 
-    std::shared_ptr<CWallet> wallet = GetWallet(wallet_name);
+    WalletContext& context = EnsureWalletContext(request.context);
+    std::shared_ptr<CWallet> wallet = GetWallet(context, wallet_name);
     if (!wallet) {
         throw JSONRPCError(RPC_WALLET_NOT_FOUND, "Requested wallet does not exist or is not loaded");
     }
@@ -2902,7 +2906,7 @@ static RPCHelpMan unloadwallet()
     // is destroyed (see CheckUniqueFileid).
     std::vector<bilingual_str> warnings;
     std::optional<bool> load_on_start = request.params[1].isNull() ? std::nullopt : std::optional<bool>(request.params[1].get_bool());
-    if (!RemoveWallet(wallet, load_on_start, warnings)) {
+    if (!RemoveWallet(context, wallet, load_on_start, warnings)) {
         throw JSONRPCError(RPC_MISC_ERROR, "Requested wallet already unloaded");
     }
 
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
index c8c5215e1b..9fcea5826b 100644
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -20,6 +20,7 @@
 #include <util/translation.h>
 #include <validation.h>
 #include <wallet/coincontrol.h>
+#include <wallet/context.h>
 #include <wallet/test/util.h>
 #include <wallet/test/wallet_test_fixture.h>
 
@@ -30,8 +31,6 @@ RPCHelpMan importmulti();
 RPCHelpMan dumpwallet();
 RPCHelpMan importwallet();
 
-extern RecursiveMutex cs_wallets;
-
 // Ensure that fee levels defined in the wallet are at least as high
 // as the default levels for node policy.
 static_assert(DEFAULT_TRANSACTION_MINFEE >= DEFAULT_MIN_RELAY_TX_FEE, "wallet minimum fee is smaller than default relay fee");
@@ -39,15 +38,15 @@ static_assert(WALLET_INCREMENTAL_RELAY_FEE >= DEFAULT_INCREMENTAL_RELAY_FEE, "wa
 
 BOOST_FIXTURE_TEST_SUITE(wallet_tests, WalletTestingSetup)
 
-static std::shared_ptr<CWallet> TestLoadWallet(interfaces::Chain* chain)
+static std::shared_ptr<CWallet> TestLoadWallet(WalletContext& context)
 {
     DatabaseOptions options;
     DatabaseStatus status;
     bilingual_str error;
     std::vector<bilingual_str> warnings;
     auto database = MakeWalletDatabase("", options, status, error);
-    auto wallet = CWallet::Create(chain, "", std::move(database), options.create_flags, error, warnings);
-    if (chain) {
+    auto wallet = CWallet::Create(context, "", std::move(database), options.create_flags, error, warnings);
+    if (context.chain) {
         wallet->postInitProcess();
     }
     return wallet;
@@ -200,7 +199,8 @@ BOOST_FIXTURE_TEST_CASE(importmulti_rescan, TestChain100Setup)
         std::shared_ptr<CWallet> wallet = std::make_shared<CWallet>(m_node.chain.get(), "", CreateDummyWalletDatabase());
         wallet->SetupLegacyScriptPubKeyMan();
         WITH_LOCK(wallet->cs_wallet, wallet->SetLastBlockProcessed(newTip->nHeight, newTip->GetBlockHash()));
-        AddWallet(wallet);
+        WalletContext context;
+        AddWallet(context, wallet);
         UniValue keys;
         keys.setArray();
         UniValue key;
@@ -218,6 +218,7 @@ BOOST_FIXTURE_TEST_CASE(importmulti_rescan, TestChain100Setup)
         key.pushKV("internal", UniValue(true));
         keys.push_back(key);
         JSONRPCRequest request;
+        request.context = &context;
         request.params.setArray();
         request.params.push_back(keys);
 
@@ -231,7 +232,7 @@ BOOST_FIXTURE_TEST_CASE(importmulti_rescan, TestChain100Setup)
                       "downloading and rescanning the relevant blocks (see -reindex and -rescan "
                       "options).\"}},{\"success\":true}]",
                               0, oldTip->GetBlockTimeMax(), TIMESTAMP_WINDOW));
-        RemoveWallet(wallet, std::nullopt);
+        RemoveWallet(context, wallet, /* load_on_startup= */ std::nullopt);
     }
 }
 
@@ -258,6 +259,7 @@ BOOST_FIXTURE_TEST_CASE(importwallet_rescan, TestChain100Setup)
 
     // Import key into wallet and call dumpwallet to create backup file.
     {
+        WalletContext context;
         std::shared_ptr<CWallet> wallet = std::make_shared<CWallet>(m_node.chain.get(), "", CreateDummyWalletDatabase());
         {
             auto spk_man = wallet->GetOrCreateLegacyScriptPubKeyMan();
@@ -265,15 +267,16 @@ BOOST_FIXTURE_TEST_CASE(importwallet_rescan, TestChain100Setup)
             spk_man->mapKeyMetadata[coinbaseKey.GetPubKey().GetID()].nCreateTime = KEY_TIME;
             spk_man->AddKeyPubKey(coinbaseKey, coinbaseKey.GetPubKey());
 
-            AddWallet(wallet);
+            AddWallet(context, wallet);
             wallet->SetLastBlockProcessed(m_node.chainman->ActiveChain().Height(), m_node.chainman->ActiveChain().Tip()->GetBlockHash());
         }
         JSONRPCRequest request;
+        request.context = &context;
         request.params.setArray();
         request.params.push_back(backup_file);
 
         ::dumpwallet().HandleRequest(request);
-        RemoveWallet(wallet, std::nullopt);
+        RemoveWallet(context, wallet, /* load_on_startup= */ std::nullopt);
     }
 
     // Call importwallet RPC and verify all blocks with timestamps >= BLOCK_TIME
@@ -283,13 +286,15 @@ BOOST_FIXTURE_TEST_CASE(importwallet_rescan, TestChain100Setup)
         LOCK(wallet->cs_wallet);
         wallet->SetupLegacyScriptPubKeyMan();
 
+        WalletContext context;
         JSONRPCRequest request;
+        request.context = &context;
         request.params.setArray();
         request.params.push_back(backup_file);
-        AddWallet(wallet);
+        AddWallet(context, wallet);
         wallet->SetLastBlockProcessed(m_node.chainman->ActiveChain().Height(), m_node.chainman->ActiveChain().Tip()->GetBlockHash());
         ::importwallet().HandleRequest(request);
-        RemoveWallet(wallet, std::nullopt);
+        RemoveWallet(context, wallet, /* load_on_startup= */ std::nullopt);
 
         BOOST_CHECK_EQUAL(wallet->mapWallet.size(), 3U);
         BOOST_CHECK_EQUAL(m_coinbase_txns.size(), 103U);
@@ -679,7 +684,9 @@ BOOST_FIXTURE_TEST_CASE(CreateWallet, TestChain100Setup)
 {
     gArgs.ForceSetArg("-unsafesqlitesync", "1");
     // Create new wallet with known key and unload it.
-    auto wallet = TestLoadWallet(m_node.chain.get());
+    WalletContext context;
+    context.chain = m_node.chain.get();
+    auto wallet = TestLoadWallet(context);
     CKey key;
     key.MakeNewKey(true);
     AddKey(*wallet, key);
@@ -719,7 +726,7 @@ BOOST_FIXTURE_TEST_CASE(CreateWallet, TestChain100Setup)
 
     // Reload wallet and make sure new transactions are detected despite events
     // being blocked
-    wallet = TestLoadWallet(m_node.chain.get());
+    wallet = TestLoadWallet(context);
     BOOST_CHECK(rescan_completed);
     BOOST_CHECK_EQUAL(addtx_count, 2);
     {
@@ -746,20 +753,20 @@ BOOST_FIXTURE_TEST_CASE(CreateWallet, TestChain100Setup)
     // deadlock during the sync and simulates a new block notification happening
     // as soon as possible.
     addtx_count = 0;
-    auto handler = HandleLoadWallet([&](std::unique_ptr<interfaces::Wallet> wallet) EXCLUSIVE_LOCKS_REQUIRED(wallet->wallet()->cs_wallet, cs_wallets) {
+    auto handler = HandleLoadWallet(context, [&](std::unique_ptr<interfaces::Wallet> wallet) EXCLUSIVE_LOCKS_REQUIRED(wallet->wallet()->cs_wallet, context.wallets_mutex) {
             BOOST_CHECK(rescan_completed);
             m_coinbase_txns.push_back(CreateAndProcessBlock({}, GetScriptForRawPubKey(coinbaseKey.GetPubKey())).vtx[0]);
             block_tx = TestSimpleSpend(*m_coinbase_txns[2], 0, coinbaseKey, GetScriptForRawPubKey(key.GetPubKey()));
             m_coinbase_txns.push_back(CreateAndProcessBlock({block_tx}, GetScriptForRawPubKey(coinbaseKey.GetPubKey())).vtx[0]);
             mempool_tx = TestSimpleSpend(*m_coinbase_txns[3], 0, coinbaseKey, GetScriptForRawPubKey(key.GetPubKey()));
             BOOST_CHECK(m_node.chain->broadcastTransaction(MakeTransactionRef(mempool_tx), DEFAULT_TRANSACTION_MAXFEE, false, error));
-            LEAVE_CRITICAL_SECTION(cs_wallets);
+            LEAVE_CRITICAL_SECTION(context.wallets_mutex);
             LEAVE_CRITICAL_SECTION(wallet->wallet()->cs_wallet);
             SyncWithValidationInterfaceQueue();
             ENTER_CRITICAL_SECTION(wallet->wallet()->cs_wallet);
-            ENTER_CRITICAL_SECTION(cs_wallets);
+            ENTER_CRITICAL_SECTION(context.wallets_mutex);
         });
-    wallet = TestLoadWallet(m_node.chain.get());
+    wallet = TestLoadWallet(context);
     BOOST_CHECK_EQUAL(addtx_count, 4);
     {
         LOCK(wallet->cs_wallet);
@@ -773,7 +780,8 @@ BOOST_FIXTURE_TEST_CASE(CreateWallet, TestChain100Setup)
 
 BOOST_FIXTURE_TEST_CASE(CreateWalletWithoutChain, BasicTestingSetup)
 {
-    auto wallet = TestLoadWallet(nullptr);
+    WalletContext context;
+    auto wallet = TestLoadWallet(context);
     BOOST_CHECK(wallet);
     UnloadWallet(std::move(wallet));
 }
@@ -781,7 +789,9 @@ BOOST_FIXTURE_TEST_CASE(CreateWalletWithoutChain, BasicTestingSetup)
 BOOST_FIXTURE_TEST_CASE(ZapSelectTx, TestChain100Setup)
 {
     gArgs.ForceSetArg("-unsafesqlitesync", "1");
-    auto wallet = TestLoadWallet(m_node.chain.get());
+    WalletContext context;
+    context.chain = m_node.chain.get();
+    auto wallet = TestLoadWallet(context);
     CKey key;
     key.MakeNewKey(true);
     AddKey(*wallet, key);
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index e6227048d2..cf869fac0c 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -33,6 +33,7 @@
 #include <util/string.h>
 #include <util/translation.h>
 #include <wallet/coincontrol.h>
+#include <wallet/context.h>
 #include <wallet/fees.h>
 #include <wallet/external_signer_scriptpubkeyman.h>
 
@@ -54,10 +55,6 @@ const std::map<uint64_t,std::string> WALLET_FLAG_CAVEATS{
     },
 };
 
-RecursiveMutex cs_wallets;
-static std::vector<std::shared_ptr<CWallet>> vpwallets GUARDED_BY(cs_wallets);
-static std::list<LoadWalletFn> g_load_wallet_fns GUARDED_BY(cs_wallets);
-
 bool AddWalletSetting(interfaces::Chain& chain, const std::string& wallet_name)
 {
     util::SettingsValue setting_value = chain.getRwSetting("wallet");
@@ -104,19 +101,19 @@ static void RefreshMempoolStatus(CWalletTx& tx, interfaces::Chain& chain)
     tx.fInMempool = chain.isInMempool(tx.GetHash());
 }
 
-bool AddWallet(const std::shared_ptr<CWallet>& wallet)
+bool AddWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet)
 {
-    LOCK(cs_wallets);
+    LOCK(context.wallets_mutex);
     assert(wallet);
-    std::vector<std::shared_ptr<CWallet>>::const_iterator i = std::find(vpwallets.begin(), vpwallets.end(), wallet);
-    if (i != vpwallets.end()) return false;
-    vpwallets.push_back(wallet);
+    std::vector<std::shared_ptr<CWallet>>::const_iterator i = std::find(context.wallets.begin(), context.wallets.end(), wallet);
+    if (i != context.wallets.end()) return false;
+    context.wallets.push_back(wallet);
     wallet->ConnectScriptPubKeyManNotifiers();
     wallet->NotifyCanGetAddressesChanged();
     return true;
 }
 
-bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start, std::vector<bilingual_str>& warnings)
+bool RemoveWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start, std::vector<bilingual_str>& warnings)
 {
     assert(wallet);
 
@@ -125,10 +122,10 @@ bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, std::optional<bool> lo
 
     // Unregister with the validation interface which also drops shared ponters.
     wallet->m_chain_notifications_handler.reset();
-    LOCK(cs_wallets);
-    std::vector<std::shared_ptr<CWallet>>::iterator i = std::find(vpwallets.begin(), vpwallets.end(), wallet);
-    if (i == vpwallets.end()) return false;
-    vpwallets.erase(i);
+    LOCK(context.wallets_mutex);
+    std::vector<std::shared_ptr<CWallet>>::iterator i = std::find(context.wallets.begin(), context.wallets.end(), wallet);
+    if (i == context.wallets.end()) return false;
+    context.wallets.erase(i);
 
     // Write the wallet setting
     UpdateWalletSetting(chain, name, load_on_start, warnings);
@@ -136,32 +133,32 @@ bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, std::optional<bool> lo
     return true;
 }
 
-bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start)
+bool RemoveWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start)
 {
     std::vector<bilingual_str> warnings;
-    return RemoveWallet(wallet, load_on_start, warnings);
+    return RemoveWallet(context, wallet, load_on_start, warnings);
 }
 
-std::vector<std::shared_ptr<CWallet>> GetWallets()
+std::vector<std::shared_ptr<CWallet>> GetWallets(WalletContext& context)
 {
-    LOCK(cs_wallets);
-    return vpwallets;
+    LOCK(context.wallets_mutex);
+    return context.wallets;
 }
 
-std::shared_ptr<CWallet> GetWallet(const std::string& name)
+std::shared_ptr<CWallet> GetWallet(WalletContext& context, const std::string& name)
 {
-    LOCK(cs_wallets);
-    for (const std::shared_ptr<CWallet>& wallet : vpwallets) {
+    LOCK(context.wallets_mutex);
+    for (const std::shared_ptr<CWallet>& wallet : context.wallets) {
         if (wallet->GetName() == name) return wallet;
     }
     return nullptr;
 }
 
-std::unique_ptr<interfaces::Handler> HandleLoadWallet(LoadWalletFn load_wallet)
+std::unique_ptr<interfaces::Handler> HandleLoadWallet(WalletContext& context, LoadWalletFn load_wallet)
 {
-    LOCK(cs_wallets);
-    auto it = g_load_wallet_fns.emplace(g_load_wallet_fns.end(), std::move(load_wallet));
-    return interfaces::MakeHandler([it] { LOCK(cs_wallets); g_load_wallet_fns.erase(it); });
+    LOCK(context.wallets_mutex);
+    auto it = context.wallet_load_fns.emplace(context.wallet_load_fns.end(), std::move(load_wallet));
+    return interfaces::MakeHandler([&context, it] { LOCK(context.wallets_mutex); context.wallet_load_fns.erase(it); });
 }
 
 static Mutex g_loading_wallet_mutex;
@@ -213,7 +210,7 @@ void UnloadWallet(std::shared_ptr<CWallet>&& wallet)
 }
 
 namespace {
-std::shared_ptr<CWallet> LoadWalletInternal(interfaces::Chain& chain, const std::string& name, std::optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings)
+std::shared_ptr<CWallet> LoadWalletInternal(WalletContext& context, const std::string& name, std::optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
     try {
         std::unique_ptr<WalletDatabase> database = MakeWalletDatabase(name, options, status, error);
@@ -222,18 +219,18 @@ std::shared_ptr<CWallet> LoadWalletInternal(interfaces::Chain& chain, const std:
             return nullptr;
         }
 
-        chain.initMessage(_("Loading wallet…").translated);
-        std::shared_ptr<CWallet> wallet = CWallet::Create(&chain, name, std::move(database), options.create_flags, error, warnings);
+        context.chain->initMessage(_("Loading wallet…").translated);
+        std::shared_ptr<CWallet> wallet = CWallet::Create(context, name, std::move(database), options.create_flags, error, warnings);
         if (!wallet) {
             error = Untranslated("Wallet loading failed.") + Untranslated(" ") + error;
             status = DatabaseStatus::FAILED_LOAD;
             return nullptr;
         }
-        AddWallet(wallet);
+        AddWallet(context, wallet);
         wallet->postInitProcess();
 
         // Write the wallet setting
-        UpdateWalletSetting(chain, name, load_on_start, warnings);
+        UpdateWalletSetting(*context.chain, name, load_on_start, warnings);
 
         return wallet;
     } catch (const std::runtime_error& e) {
@@ -244,7 +241,7 @@ std::shared_ptr<CWallet> LoadWalletInternal(interfaces::Chain& chain, const std:
 }
 } // namespace
 
-std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, std::optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings)
+std::shared_ptr<CWallet> LoadWallet(WalletContext& context, const std::string& name, std::optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
     auto result = WITH_LOCK(g_loading_wallet_mutex, return g_loading_wallet_set.insert(name));
     if (!result.second) {
@@ -252,12 +249,12 @@ std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string&
         status = DatabaseStatus::FAILED_LOAD;
         return nullptr;
     }
-    auto wallet = LoadWalletInternal(chain, name, load_on_start, options, status, error, warnings);
+    auto wallet = LoadWalletInternal(context, name, load_on_start, options, status, error, warnings);
     WITH_LOCK(g_loading_wallet_mutex, g_loading_wallet_set.erase(result.first));
     return wallet;
 }
 
-std::shared_ptr<CWallet> CreateWallet(interfaces::Chain& chain, const std::string& name, std::optional<bool> load_on_start, DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings)
+std::shared_ptr<CWallet> CreateWallet(WalletContext& context, const std::string& name, std::optional<bool> load_on_start, DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
     uint64_t wallet_creation_flags = options.create_flags;
     const SecureString& passphrase = options.create_passphrase;
@@ -302,8 +299,8 @@ std::shared_ptr<CWallet> CreateWallet(interfaces::Chain& chain, const std::strin
     }
 
     // Make the wallet
-    chain.initMessage(_("Loading wallet…").translated);
-    std::shared_ptr<CWallet> wallet = CWallet::Create(&chain, name, std::move(database), wallet_creation_flags, error, warnings);
+    context.chain->initMessage(_("Loading wallet…").translated);
+    std::shared_ptr<CWallet> wallet = CWallet::Create(context, name, std::move(database), wallet_creation_flags, error, warnings);
     if (!wallet) {
         error = Untranslated("Wallet creation failed.") + Untranslated(" ") + error;
         status = DatabaseStatus::FAILED_CREATE;
@@ -345,11 +342,11 @@ std::shared_ptr<CWallet> CreateWallet(interfaces::Chain& chain, const std::strin
             wallet->Lock();
         }
     }
-    AddWallet(wallet);
+    AddWallet(context, wallet);
     wallet->postInitProcess();
 
     // Write the wallet settings
-    UpdateWalletSetting(chain, name, load_on_start, warnings);
+    UpdateWalletSetting(*context.chain, name, load_on_start, warnings);
 
     status = DatabaseStatus::SUCCESS;
     return wallet;
@@ -1802,9 +1799,9 @@ void CWallet::ResendWalletTransactions()
 
 /** @} */ // end of mapWallet
 
-void MaybeResendWalletTxs()
+void MaybeResendWalletTxs(WalletContext& context)
 {
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets(context)) {
         pwallet->ResendWalletTransactions();
     }
 }
@@ -2509,8 +2506,9 @@ std::unique_ptr<WalletDatabase> MakeWalletDatabase(const std::string& name, cons
     return MakeDatabase(wallet_path, options, status, error_string);
 }
 
-std::shared_ptr<CWallet> CWallet::Create(interfaces::Chain* chain, const std::string& name, std::unique_ptr<WalletDatabase> database, uint64_t wallet_creation_flags, bilingual_str& error, std::vector<bilingual_str>& warnings)
+std::shared_ptr<CWallet> CWallet::Create(WalletContext& context, const std::string& name, std::unique_ptr<WalletDatabase> database, uint64_t wallet_creation_flags, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
+    interfaces::Chain* chain = context.chain;
     const std::string& walletFile = database->Filename();
 
     int64_t nStart = GetTimeMillis();
@@ -2722,9 +2720,9 @@ std::shared_ptr<CWallet> CWallet::Create(interfaces::Chain* chain, const std::st
     }
 
     {
-        LOCK(cs_wallets);
-        for (auto& load_wallet : g_load_wallet_fns) {
-            load_wallet(interfaces::MakeWallet(walletInstance));
+        LOCK(context.wallets_mutex);
+        for (auto& load_wallet : context.wallet_load_fns) {
+            load_wallet(interfaces::MakeWallet(context, walletInstance));
         }
     }
 
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 25f89e8ea4..a1bbf66136 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -42,6 +42,8 @@
 
 #include <boost/signals2/signal.hpp>
 
+struct WalletContext;
+
 using LoadWalletFn = std::function<void(std::unique_ptr<interfaces::Wallet> wallet)>;
 
 struct bilingual_str;
@@ -53,14 +55,14 @@ struct bilingual_str;
 //! by the shared pointer deleter.
 void UnloadWallet(std::shared_ptr<CWallet>&& wallet);
 
-bool AddWallet(const std::shared_ptr<CWallet>& wallet);
-bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start, std::vector<bilingual_str>& warnings);
-bool RemoveWallet(const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start);
-std::vector<std::shared_ptr<CWallet>> GetWallets();
-std::shared_ptr<CWallet> GetWallet(const std::string& name);
-std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, std::optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
-std::shared_ptr<CWallet> CreateWallet(interfaces::Chain& chain, const std::string& name, std::optional<bool> load_on_start, DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
-std::unique_ptr<interfaces::Handler> HandleLoadWallet(LoadWalletFn load_wallet);
+bool AddWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet);
+bool RemoveWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start, std::vector<bilingual_str>& warnings);
+bool RemoveWallet(WalletContext& context, const std::shared_ptr<CWallet>& wallet, std::optional<bool> load_on_start);
+std::vector<std::shared_ptr<CWallet>> GetWallets(WalletContext& context);
+std::shared_ptr<CWallet> GetWallet(WalletContext& context, const std::string& name);
+std::shared_ptr<CWallet> LoadWallet(WalletContext& context, const std::string& name, std::optional<bool> load_on_start, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
+std::shared_ptr<CWallet> CreateWallet(WalletContext& context, const std::string& name, std::optional<bool> load_on_start, DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings);
+std::unique_ptr<interfaces::Handler> HandleLoadWallet(WalletContext& context, LoadWalletFn load_wallet);
 std::unique_ptr<WalletDatabase> MakeWalletDatabase(const std::string& name, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error);
 
 //! -paytxfee default
@@ -772,7 +774,7 @@ public:
     bool MarkReplaced(const uint256& originalHash, const uint256& newHash);
 
     /* Initializes the wallet, returns a new CWallet instance or a null pointer in case of an error */
-    static std::shared_ptr<CWallet> Create(interfaces::Chain* chain, const std::string& name, std::unique_ptr<WalletDatabase> database, uint64_t wallet_creation_flags, bilingual_str& error, std::vector<bilingual_str>& warnings);
+    static std::shared_ptr<CWallet> Create(WalletContext& context, const std::string& name, std::unique_ptr<WalletDatabase> database, uint64_t wallet_creation_flags, bilingual_str& error, std::vector<bilingual_str>& warnings);
 
     /**
      * Wallet post-init setup
@@ -919,7 +921,7 @@ public:
  * Called periodically by the schedule thread. Prompts individual wallets to resend
  * their transactions. Actual rebroadcast schedule is managed by the wallets themselves.
  */
-void MaybeResendWalletTxs();
+void MaybeResendWalletTxs(WalletContext& context);
 
 /** RAII object to check and reserve a wallet rescan */
 class WalletRescanReserver
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index 1e5d8dfa3a..2fabe65a93 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -1004,14 +1004,14 @@ DBErrors WalletBatch::ZapSelectTx(std::vector<uint256>& vTxHashIn, std::vector<u
     return DBErrors::LOAD_OK;
 }
 
-void MaybeCompactWalletDB()
+void MaybeCompactWalletDB(WalletContext& context)
 {
     static std::atomic<bool> fOneThread(false);
     if (fOneThread.exchange(true)) {
         return;
     }
 
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets(context)) {
         WalletDatabase& dbh = pwallet->GetDatabase();
 
         unsigned int nUpdateCounter = dbh.nUpdateCounter;
diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h
index 9b775eb481..25c2ec5909 100644
--- a/src/wallet/walletdb.h
+++ b/src/wallet/walletdb.h
@@ -31,6 +31,7 @@
 static const bool DEFAULT_FLUSHWALLET = true;
 
 struct CBlockLocator;
+struct WalletContext;
 class CKeyPool;
 class CMasterKey;
 class CScript;
@@ -279,7 +280,7 @@ private:
 };
 
 //! Compacts BDB state so that wallet.dat is self-contained (if there are changes)
-void MaybeCompactWalletDB();
+void MaybeCompactWalletDB(WalletContext& context);
 
 //! Callback for filtering key types to deserialize in ReadKeyValue
 using KeyFilterFn = std::function<bool(const std::string&)>;