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-rw-r--r--src/qt/bitcoingui.cpp3
-rw-r--r--src/qt/clientmodel.cpp33
-rw-r--r--src/qt/clientmodel.h6
3 files changed, 32 insertions, 10 deletions
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index be79a67990..5c26baef9e 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -478,6 +478,7 @@ void BitcoinGUI::setClientModel(ClientModel *_clientModel)
connect(_clientModel, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
connect(_clientModel, SIGNAL(networkActiveChanged(bool)), this, SLOT(setNetworkActive(bool)));
+ modalOverlay->setKnownBestHeight(_clientModel->getHeaderTipHeight(), QDateTime::fromTime_t(_clientModel->getHeaderTipTime()));
setNumBlocks(_clientModel->getNumBlocks(), _clientModel->getLastBlockDate(), _clientModel->getVerificationProgress(NULL), false);
connect(_clientModel, SIGNAL(numBlocksChanged(int,QDateTime,double,bool)), this, SLOT(setNumBlocks(int,QDateTime,double,bool)));
@@ -505,8 +506,6 @@ void BitcoinGUI::setClientModel(ClientModel *_clientModel)
// initialize the disable state of the tray icon with the current value in the model.
setTrayIconVisible(optionsModel->getHideTrayIcon());
}
-
- modalOverlay->setKnownBestHeight(clientModel->getHeaderTipHeight(), QDateTime::fromTime_t(clientModel->getHeaderTipTime()));
} else {
// Disable possibility to show main window via action
toggleHideAction->setEnabled(false);
diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index bb10e49422..20d4687971 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -36,6 +36,8 @@ ClientModel::ClientModel(OptionsModel *_optionsModel, QObject *parent) :
banTableModel(0),
pollTimer(0)
{
+ cachedBestHeaderHeight = -1;
+ cachedBestHeaderTime = -1;
peerTableModel = new PeerTableModel(this);
banTableModel = new BanTableModel(this);
pollTimer = new QTimer(this);
@@ -74,18 +76,28 @@ int ClientModel::getNumBlocks() const
int ClientModel::getHeaderTipHeight() const
{
- LOCK(cs_main);
- if (!pindexBestHeader)
- return 0;
- return pindexBestHeader->nHeight;
+ if (cachedBestHeaderHeight == -1) {
+ // make sure we initially populate the cache via a cs_main lock
+ // otherwise we need to wait for a tip update
+ LOCK(cs_main);
+ if (pindexBestHeader) {
+ cachedBestHeaderHeight = pindexBestHeader->nHeight;
+ cachedBestHeaderTime = pindexBestHeader->GetBlockTime();
+ }
+ }
+ return cachedBestHeaderHeight;
}
int64_t ClientModel::getHeaderTipTime() const
{
- LOCK(cs_main);
- if (!pindexBestHeader)
- return 0;
- return pindexBestHeader->GetBlockTime();
+ if (cachedBestHeaderTime == -1) {
+ LOCK(cs_main);
+ if (pindexBestHeader) {
+ cachedBestHeaderHeight = pindexBestHeader->nHeight;
+ cachedBestHeaderTime = pindexBestHeader->GetBlockTime();
+ }
+ }
+ return cachedBestHeaderTime;
}
quint64 ClientModel::getTotalBytesRecv() const
@@ -283,6 +295,11 @@ static void BlockTipChanged(ClientModel *clientmodel, bool initialSync, const CB
int64_t& nLastUpdateNotification = fHeader ? nLastHeaderTipUpdateNotification : nLastBlockTipUpdateNotification;
+ if (fHeader) {
+ // cache best headers time and height to reduce future cs_main locks
+ clientmodel->cachedBestHeaderHeight = pIndex->nHeight;
+ clientmodel->cachedBestHeaderTime = pIndex->GetBlockTime();
+ }
// if we are in-sync, update the UI regardless of last update time
if (!initialSync || now - nLastUpdateNotification > MODEL_UPDATE_DELAY) {
//pass a async signal to the UI thread
diff --git a/src/qt/clientmodel.h b/src/qt/clientmodel.h
index 2c10e633b8..4c92e2144e 100644
--- a/src/qt/clientmodel.h
+++ b/src/qt/clientmodel.h
@@ -8,6 +8,8 @@
#include <QObject>
#include <QDateTime>
+#include <atomic>
+
class AddressTableModel;
class BanTableModel;
class OptionsModel;
@@ -81,6 +83,10 @@ public:
QString formatClientStartupTime() const;
QString dataDir() const;
+ // caches for the best header
+ mutable std::atomic<int> cachedBestHeaderHeight;
+ mutable std::atomic<int64_t> cachedBestHeaderTime;
+
private:
OptionsModel *optionsModel;
PeerTableModel *peerTableModel;