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author | Hennadii Stepanov <32963518+hebasto@users.noreply.github.com> | 2022-08-15 19:35:52 +0100 |
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committer | Hennadii Stepanov <32963518+hebasto@users.noreply.github.com> | 2022-08-15 19:38:17 +0100 |
commit | 6d4889a694da12e03ef4d18bef2ff60d1d170f18 (patch) | |
tree | fc3d86245521743eaa9ec83992e17ecc05f750cd /src/qt/walletmodel.cpp | |
parent | 867f5fd1b3564259116ac2edbba4f557d87ded07 (diff) | |
parent | 4584d300a40bfd84517072f7a6eee114fb7cab08 (diff) | |
download | bitcoin-6d4889a694da12e03ef4d18bef2ff60d1d170f18.tar.xz |
Merge bitcoin-core/gui#598: Avoid recalculating the wallet balance - use model cache
4584d300a40bfd84517072f7a6eee114fb7cab08 GUI: remove now unneeded 'm_balances' field from overviewpage (furszy)
050e8b139145d6991e740b0e5f2b3364663dd348 GUI: 'getAvailableBalance', use cached balance if the user did not select UTXO manually (furszy)
96e3264a82c51b456703f500bd98e8cb98115697 GUI: use cached balance in overviewpage and sendcoinsdialog (furszy)
321335bf0292034d79afa6c44f7f072942b6cc3c GUI: add getter for WalletModel::m_cached_balances field (furszy)
e62958dc81d215a1c56318d0914dfd9a33d45973 GUI: sendCoinsDialog, remove duplicate wallet().getBalances() call (furszy)
Pull request description:
As per the title says, we are recalculating the entire wallet balance on different situations calling to `wallet().getBalances()`, when should instead make use of the wallet model cached balance.
This has the benefits of (1) not spending resources calculating a balance that we already have cached, and (2) avoid blocking the main thread for a long time, in case of big wallets, walking through the entire wallet's tx map more than what it's really needed.
Changes:
1) Fix: `SendCoinsDialog` was calling `wallet().getBalances()` twice during `setModel`.
2) Use the cached balance if the user did not select any UTXO manually inside the wallet model `getAvailableBalance` call.
-----------------------
As an extra note, this work born in [#25005](https://github.com/bitcoin/bitcoin/pull/25005) but grew out of scope of it.
ACKs for top commit:
jarolrod:
ACK 4584d300a40bfd84517072f7a6eee114fb7cab08
hebasto:
re-ACK 4584d300a40bfd84517072f7a6eee114fb7cab08, only suggested changes and commit message formatting since my [recent](https://github.com/bitcoin-core/gui/pull/598#pullrequestreview-1071268192) review.
Tree-SHA512: 6633ce7f9a82a3e46e75aa7295df46c80a4cd4a9f3305427af203c9bc8670573fa8a1927f14a279260c488cc975a08d238faba2e9751588086fea1dcf8ea2b28
Diffstat (limited to 'src/qt/walletmodel.cpp')
-rw-r--r-- | src/qt/walletmodel.cpp | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp index ac6c8bea46..c6f3f5b00c 100644 --- a/src/qt/walletmodel.cpp +++ b/src/qt/walletmodel.cpp @@ -67,6 +67,10 @@ WalletModel::~WalletModel() void WalletModel::startPollBalance() { + // Update the cached balance right away, so every view can make use of it, + // so them don't need to waste resources recalculating it. + pollBalanceChanged(); + // This timer will be fired repeatedly to update the balance // Since the QTimer::timeout is a private signal, it cannot be used // in the GUIUtil::ExceptionSafeConnect directly. @@ -120,12 +124,17 @@ void WalletModel::pollBalanceChanged() void WalletModel::checkBalanceChanged(const interfaces::WalletBalances& new_balances) { - if(new_balances.balanceChanged(m_cached_balances)) { + if (new_balances.balanceChanged(m_cached_balances)) { m_cached_balances = new_balances; Q_EMIT balanceChanged(new_balances); } } +interfaces::WalletBalances WalletModel::getCachedBalance() const +{ + return m_cached_balances; +} + void WalletModel::updateTransaction() { // Balance and number of transactions might have changed @@ -194,7 +203,9 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact return DuplicateAddress; } - CAmount nBalance = m_wallet->getAvailableBalance(coinControl); + // If no coin was manually selected, use the cached balance + // Future: can merge this call with 'createTransaction'. + CAmount nBalance = getAvailableBalance(&coinControl); if(total > nBalance) { @@ -602,3 +613,8 @@ uint256 WalletModel::getLastBlockProcessed() const { return m_client_model ? m_client_model->getBestBlockHash() : uint256{}; } + +CAmount WalletModel::getAvailableBalance(const CCoinControl* control) +{ + return control && control->HasSelected() ? wallet().getAvailableBalance(*control) : getCachedBalance().balance; +} |