diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/wallet/rpcwallet.cpp | 54 | ||||
| -rw-r--r-- | src/wallet/wallet.cpp | 15 | ||||
| -rw-r--r-- | src/wallet/wallet.h | 3 |
3 files changed, 68 insertions, 4 deletions
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index d4c281b13c..daef8473f1 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -3076,7 +3076,7 @@ static UniValue listwallets(const JSONRPCRequest& request) return obj; } -UniValue loadwallet(const JSONRPCRequest& request) +static UniValue loadwallet(const JSONRPCRequest& request) { if (request.fHelp || request.params.size() != 1) throw std::runtime_error( @@ -3123,7 +3123,7 @@ UniValue loadwallet(const JSONRPCRequest& request) return obj; } -UniValue createwallet(const JSONRPCRequest& request) +static UniValue createwallet(const JSONRPCRequest& request) { if (request.fHelp || request.params.size() != 1) { throw std::runtime_error( @@ -3170,6 +3170,55 @@ UniValue createwallet(const JSONRPCRequest& request) return obj; } +static UniValue unloadwallet(const JSONRPCRequest& request) +{ + if (request.fHelp || request.params.size() > 1) { + throw std::runtime_error( + "unloadwallet ( \"wallet_name\" )\n" + "Unloads the wallet referenced by the request endpoint otherwise unloads the wallet specified in the argument.\n" + "Specifying the wallet name on a wallet endpoint is invalid." + "\nArguments:\n" + "1. \"wallet_name\" (string, optional) The name of the wallet to unload.\n" + "\nExamples:\n" + + HelpExampleCli("unloadwallet", "wallet_name") + + HelpExampleRpc("unloadwallet", "wallet_name") + ); + } + + std::string wallet_name; + if (GetWalletNameFromJSONRPCRequest(request, wallet_name)) { + if (!request.params[0].isNull()) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot unload the requested wallet"); + } + } else { + wallet_name = request.params[0].get_str(); + } + + std::shared_ptr<CWallet> wallet = GetWallet(wallet_name); + if (!wallet) { + throw JSONRPCError(RPC_WALLET_NOT_FOUND, "Requested wallet does not exist or is not loaded"); + } + + // Release the "main" shared pointer and prevent further notifications. + // Note that any attempt to load the same wallet would fail until the wallet + // is destroyed (see CheckUniqueFileid). + if (!RemoveWallet(wallet)) { + throw JSONRPCError(RPC_MISC_ERROR, "Requested wallet already unloaded"); + } + UnregisterValidationInterface(wallet.get()); + + // The wallet can be in use so it's not possible to explicitly unload here. + // Just notify the unload intent so that all shared pointers are released. + // The wallet will be destroyed once the last shared pointer is released. + wallet->NotifyUnload(); + + // There's no point in waiting for the wallet to unload. + // At this point this method should never fail. The unloading could only + // fail due to an unexpected error which would cause a process termination. + + return NullUniValue; +} + static UniValue resendwallettransactions(const JSONRPCRequest& request) { std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request); @@ -4405,6 +4454,7 @@ static const CRPCCommand commands[] = { "wallet", "settxfee", &settxfee, {"amount"} }, { "wallet", "signmessage", &signmessage, {"address","message"} }, { "wallet", "signrawtransactionwithwallet", &signrawtransactionwithwallet, {"hexstring","prevtxs","sighashtype"} }, + { "wallet", "unloadwallet", &unloadwallet, {"wallet_name"} }, { "wallet", "walletlock", &walletlock, {} }, { "wallet", "walletpassphrasechange", &walletpassphrasechange, {"oldpassphrase","newpassphrase"} }, { "wallet", "walletpassphrase", &walletpassphrase, {"passphrase","timeout"} }, diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index c3597aace8..a3bda89468 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -79,6 +79,15 @@ std::shared_ptr<CWallet> GetWallet(const std::string& name) return nullptr; } +// Custom deleter for shared_ptr<CWallet>. +static void ReleaseWallet(CWallet* wallet) +{ + LogPrintf("Releasing wallet %s\n", wallet->GetName()); + wallet->BlockUntilSyncedToCurrentChain(); + wallet->Flush(); + delete wallet; +} + const uint32_t BIP32_HARDENED_KEY_LIMIT = 0x80000000; const uint256 CMerkleTx::ABANDON_HASH(uint256S("0000000000000000000000000000000000000000000000000000000000000001")); @@ -1294,7 +1303,7 @@ void CWallet::BlockUntilSyncedToCurrentChain() { LOCK(cs_main); const CBlockIndex* initialChainTip = chainActive.Tip(); - if (m_last_block_processed->GetAncestor(initialChainTip->nHeight) == initialChainTip) { + if (m_last_block_processed && m_last_block_processed->GetAncestor(initialChainTip->nHeight) == initialChainTip) { return; } } @@ -4057,7 +4066,9 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(const std::string& name, int64_t nStart = GetTimeMillis(); bool fFirstRun = true; - std::shared_ptr<CWallet> walletInstance = std::make_shared<CWallet>(name, WalletDatabase::Create(path)); + // TODO: Can't use std::make_shared because we need a custom deleter but + // should be possible to use std::allocate_shared. + std::shared_ptr<CWallet> walletInstance(new CWallet(name, WalletDatabase::Create(path)), ReleaseWallet); DBErrors nLoadWalletRet = walletInstance->LoadWallet(fFirstRun); if (nLoadWalletRet != DBErrors::LOAD_OK) { diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h index f1761b0fcf..825209c143 100644 --- a/src/wallet/wallet.h +++ b/src/wallet/wallet.h @@ -1097,6 +1097,9 @@ public: //! Flush wallet (bitdb flush) void Flush(bool shutdown=false); + /** Wallet is about to be unloaded */ + boost::signals2::signal<void ()> NotifyUnload; + /** * Address book entry changed. * @note called with lock cs_wallet held. |