Better visualisation of sync.

alethzero/DownloadView.cpp

@@ -30,29 +30,95 @@ using namespace std;
 using namespace dev;
 using namespace dev::eth;
 
-DownloadView::DownloadView(QWidget* _p): QWidget(_p)
+SyncView::SyncView(QWidget* _p): QWidget(_p)
 {
 }
 
-void DownloadView::paintEvent(QPaintEvent*)
+void SyncView::paintEvent(QPaintEvent*)
 {
 	QPainter p(this);
-
 	p.fillRect(rect(), Qt::white);
-	if (!m_man || m_man->chainEmpty() || !m_man->subCount())
+
+	if (!m_client)
+		return;
+
+	DownloadMan const* man = m_client->downloadMan();
+	BlockQueueStatus bqs = m_client->blockQueueStatus();
+	SyncStatus sync = m_client->syncStatus();
+
+	unsigned syncFrom = m_client->numberFromHash(PendingBlockHash);
+	unsigned syncImported = syncFrom;
+	unsigned syncImporting = syncImported + bqs.importing;
+	unsigned syncVerified = syncImporting + bqs.verified;
+	unsigned syncVerifying = syncVerified + bqs.verifying;
+	unsigned syncUnverified = syncVerifying + bqs.unverified;
+	unsigned syncUnknown = syncUnverified + bqs.unknown;
+
+	// best effort guess. assumes there's no forks.
+	unsigned downloadFrom = m_client->numberFromHash(m_client->isKnown(man->firstBlock()) ? man->firstBlock() : PendingBlockHash);
+	unsigned downloadCount = sync.blocksTotal;
+	DownloadMan::Overview overview = man->overview();
+	unsigned downloadDone = downloadFrom + overview.total;
+	unsigned downloadFlank = downloadFrom + overview.firstIncomplete;
+	unsigned downloadPoint = downloadFrom + overview.lastComplete;
+
+	unsigned hashFrom = sync.state == SyncState::Hashes ? m_client->numberFromHash(PendingBlockHash) : downloadFrom;
+	unsigned hashCount = sync.state == SyncState::Hashes ? sync.hashesTotal : downloadCount;
+	unsigned hashDone = hashFrom + (sync.state == SyncState::Hashes ? sync.hashesReceived : hashCount);
+
+	m_lastFrom = min(syncFrom, m_lastFrom);
+	unsigned from = min(min(hashFrom, downloadFrom), min(syncFrom, m_lastFrom));
+	unsigned count = max(hashFrom + hashCount, downloadFrom + downloadCount) - from;
+	m_lastFrom = (m_lastFrom * 95 + syncFrom) / 100;
+
+	if (!count)
+	{
+		m_lastFrom = (unsigned)-1;
 		return;
+	}
+
+	cnote << "Range " << from << "-" << (from + count);
+	auto r = [&](unsigned u) {
+		return toString((u - from) * 100 / count) + "%";
+	};
+
+	if (count)
+	{
+		cnote << "Hashes:" << r(hashDone) << "   Blocks:" << r(downloadFlank) << r(downloadDone) << r(downloadPoint);
+		cnote << "Importing:" << r(syncFrom) << r(syncImported) << r(syncImporting) << r(syncVerified) << r(syncVerifying) << r(syncUnverified) << r(syncUnknown);
+	}
+
+	if (!man || man->chainEmpty() || !man->subCount())
+		return;
+
+	float s = min(rect().width(), rect().height());
+	QPen pen;
+	pen.setCapStyle(Qt::FlatCap);
+	pen.setWidthF(s / 10);
+	p.setPen(pen);
+	auto middle = [&](float x) {
+		return QRectF(s / 2 - s / 2 * x, 0 + s / 2 - s / 2 * x, s * x, s * x);
+	};
+
+	auto toArc = [&](unsigned x) {
+		return (x - from) * -5760.f / count;
+	};
+	const float arcFrom = 90 * 16.f;
+	p.drawArc(middle(0.5f), arcFrom, toArc(downloadDone));
+	p.drawPie(middle(0.2f), arcFrom, toArc(hashDone));
+	return;
 
 	double ratio = (double)rect().width() / rect().height();
 	if (ratio < 1)
 		ratio = 1 / ratio;
-	double n = min(16.0, min(rect().width(), rect().height()) / ceil(sqrt(m_man->chainSize() / ratio)));
+	double n = min(16.0, min(rect().width(), rect().height()) / ceil(sqrt(man->chainSize() / ratio)));
 
 //	QSizeF area(rect().width() / floor(rect().width() / n), rect().height() / floor(rect().height() / n));
 	QSizeF area(n, n);
 	QPointF pos(0, 0);
 
-	auto bg = m_man->blocksGot();
-	unsigned subCount = m_man->subCount();
+	auto bg = man->blocksGot();
+	unsigned subCount = man->subCount();
 	if (subCount == 0)
 		return;
 	unsigned dh = 360 / subCount;
@@ -64,7 +130,7 @@ void DownloadView::paintEvent(QPaintEvent*)
 		else
 		{
 			unsigned h = 0;
-			m_man->foreachSub([&](DownloadSub const& sub)
+			man->foreachSub([&](DownloadSub const& sub)
 			{
 				if (sub.askedContains(i))
 					s = h;

alethzero/DownloadView.h

@@ -32,21 +32,23 @@
 #endif
 
 namespace dev { namespace eth {
-class DownloadMan;
+class Client;
 }}
 
-class DownloadView: public QWidget
+class SyncView: public QWidget
 {
 	Q_OBJECT
 
 public:
-	DownloadView(QWidget* _p = nullptr);
+	SyncView(QWidget* _p = nullptr);
 
-	void setDownloadMan(dev::eth::DownloadMan const* _man) { m_man = _man; }
+	void setEthereum(dev::eth::Client const* _c) { m_client = _c; }
 
 protected:
 	virtual void paintEvent(QPaintEvent*);
 
 private:
-	dev::eth::DownloadMan const* m_man = nullptr;
+	dev::eth::Client const* m_client = nullptr;
+
+	unsigned m_lastFrom = (unsigned)-1;
 };

alethzero/Main.ui

@@ -1149,7 +1149,7 @@ font-size: 14pt</string>
       <number>0</number>
      </property>
      <item>
-      <widget class="DownloadView" name="downloadView" native="true"/>
+      <widget class="SyncView" name="downloadView" native="true"/>
      </item>
     </layout>
    </widget>
@@ -1814,7 +1814,7 @@ font-size: 14pt</string>
    <container>1</container>
   </customwidget>
   <customwidget>
-   <class>DownloadView</class>
+   <class>SyncView</class>
    <extends>QWidget</extends>
    <header>DownloadView.h</header>
    <container>1</container>

alethzero/MainWin.cpp

@@ -1993,12 +1993,12 @@ void Main::on_net_triggered()
 		web3()->setNetworkPreferences(netPrefs(), ui->dropPeers->isChecked());
 		ethereum()->setNetworkId(m_privateChain.size() ? sha3(m_privateChain.toStdString()) : h256());
 		web3()->startNetwork();
-		ui->downloadView->setDownloadMan(ethereum()->downloadMan());
+		ui->downloadView->setEthereum(ethereum());
 		ui->enode->setText(QString::fromStdString(web3()->enode()));
 	}
 	else
 	{
-		ui->downloadView->setDownloadMan(nullptr);
+		ui->downloadView->setEthereum(nullptr);
 		writeSettings();
 		web3()->stopNetwork();
 	}

exp/main.cpp

@@ -135,7 +135,7 @@ int main()
 	DownloadSub s0(man);
 	DownloadSub s1(man);
 	DownloadSub s2(man);
-	man.resetToChain(h256s({u256(0), u256(1), u256(2), u256(3), u256(4), u256(5), u256(6), u256(7), u256(8)}));
+	man.resetToChain(h256s({u256(0), u256(1), u256(2), u256(3), u256(4), u256(5), u256(6), u256(7), u256(8)}), 0);
 	assert((s0.nextFetch(2) == h256Set{(u256)7, (u256)8}));
 	assert((s1.nextFetch(2) == h256Set{(u256)5, (u256)6}));
 	assert((s2.nextFetch(2) == h256Set{(u256)3, (u256)4}));

libdevcore/RangeMask.h

@@ -200,6 +200,20 @@ public:
 		return c;
 	}
 
+	size_t firstOut() const
+	{
+		if (m_ranges.empty() || !m_ranges.count(m_all.first))
+			return m_all.first;
+		return m_ranges.at(m_all.first);
+	}
+
+	size_t lastIn() const
+	{
+		if (m_ranges.empty())
+			return m_all.first;
+		return m_ranges.rbegin()->second - 1;
+	}
+
 private:
 	/// The ground range.
 	UnsignedRange m_all;

libethereum/BlockChainSync.cpp

@@ -80,7 +80,7 @@ DownloadMan& BlockChainSync::downloadMan()
 
 void BlockChainSync::abortSync()
 {
-	downloadMan().resetToChain(h256s());
+	downloadMan().reset();
 }
 
 void BlockChainSync::onPeerStatus(std::shared_ptr<EthereumPeer> _peer)

libethereum/DownloadMan.cpp

@@ -24,6 +24,16 @@ using namespace std;
 using namespace dev;
 using namespace dev::eth;
 
+DownloadMan::Overview DownloadMan::overview() const
+{
+	ReadGuard l(m_lock);
+	Overview ret;
+	ret.firstIncomplete = m_blocksGot.firstOut();
+	ret.lastComplete = ret.lastStarted = m_blocksGot.lastIn();// TODO: lastStarted properly
+	ret.total = m_blocksGot.size();
+	return ret;
+}
+
 DownloadSub::DownloadSub(DownloadMan& _man): m_man(&_man)
 {
 	WriteGuard l(m_man->x_subs);

libethereum/DownloadMan.h

@@ -82,6 +82,14 @@ class DownloadMan
 	friend class DownloadSub;
 
 public:
+	struct Overview
+	{
+		size_t total;
+		size_t firstIncomplete;
+		size_t lastComplete;
+		size_t lastStarted;
+	};
+
 	~DownloadMan()
 	{
 		for (auto i: m_subs)
@@ -97,11 +105,9 @@ public:
 
 	void resetToChain(h256s const& _chain)
 	{
-		{
-			ReadGuard l(x_subs);
+		DEV_READ_GUARDED(x_subs)
 			for (auto i: m_subs)
 				i->resetFetch();
-		}
 		WriteGuard l(m_lock);
 		m_chain.clear();
 		m_chain.reserve(_chain.size());
@@ -112,11 +118,9 @@ public:
 
 	void reset()
 	{
-		{
-			ReadGuard l(x_subs);
+		DEV_READ_GUARDED(x_subs)
 			for (auto i: m_subs)
 				i->resetFetch();
-		}
 		WriteGuard l(m_lock);
 		m_chain.clear();
 		m_blocksGot.reset();
@@ -127,11 +131,9 @@ public:
 		ReadGuard l(m_lock);
 		auto ret = m_blocksGot;
 		if (!_desperate)
-		{
-			ReadGuard l(x_subs);
-			for (auto i: m_subs)
-				ret += i->m_asked;
-		}
+			DEV_READ_GUARDED(x_subs)
+				for (auto i: m_subs)
+					ret += i->m_asked;
 		return ret;
 	}
 
@@ -144,12 +146,15 @@ public:
 	h256s remaining() const
 	{
 		h256s ret;
-		ReadGuard l(m_lock);
-		for (auto i: m_blocksGot.inverted())
-			ret.push_back(m_chain[i]);
+		DEV_READ_GUARDED(m_lock)
+			for (auto i: m_blocksGot.inverted())
+				ret.push_back(m_chain[i]);
 		return ret;
 	}
 
+	h256 firstBlock() const { return m_chain.empty() ? h256() : m_chain[0]; }
+	Overview overview() const;
+
 	size_t chainSize() const { ReadGuard l(m_lock); return m_chain.size(); }
 	size_t chainEmpty() const { ReadGuard l(m_lock); return m_chain.empty(); }
 	void foreachSub(std::function<void(DownloadSub const&)> const& _f) const { ReadGuard l(x_subs); for(auto i: m_subs) _f(*i); }