Download view as will be.

Fixes.

alethzero/DownloadView.cpp

@@ -0,0 +1,40 @@
+/*
+	This file is part of cpp-ethereum.
+
+	cpp-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	cpp-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file DownloadView.cpp
+ * @author Gav Wood <i@gavwood.com>
+ * @date 2014
+ */
+
+#include "DownloadView.h"
+
+#include <QtWidgets>
+#include <QtCore>
+#include <libethereum/Client.h>
+#include "Grapher.h"
+
+using namespace std;
+using namespace dev;
+using namespace dev::eth;
+
+DownloadView::DownloadView(QWidget* _p): QWidget(_p)
+{
+}
+
+void DownloadView::paintEvent(QPaintEvent*)
+{
+	QPainter p(this);
+}

alethzero/DownloadView.h

@@ -0,0 +1,49 @@
+/*
+	This file is part of cpp-ethereum.
+
+	cpp-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	cpp-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file DownloadView.h
+ * @author Gav Wood <i@gavwood.com>
+ * @date 2014
+ */
+
+#pragma once
+
+#ifdef Q_MOC_RUN
+#define BOOST_MPL_IF_HPP_INCLUDED
+#endif
+
+#include <list>
+#include <QtWidgets/QWidget>
+#ifndef Q_MOC_RUN
+#include <libethereum/Client.h>
+#endif
+
+namespace dev { namespace eth {
+struct MineInfo;
+}}
+
+class DownloadView: public QWidget
+{
+	Q_OBJECT
+
+public:
+	DownloadView(QWidget* _p = nullptr);
+
+protected:
+	virtual void paintEvent(QPaintEvent*);
+
+private:
+};

alethzero/Main.ui

@@ -1432,6 +1432,39 @@ font-size: 14pt</string>
     </layout>
    </widget>
   </widget>
+  <widget class="QDockWidget" name="dockWidget_12">
+   <property name="features">
+    <set>QDockWidget::DockWidgetFeatureMask</set>
+   </property>
+   <property name="windowTitle">
+    <string>Blockchain Download</string>
+   </property>
+   <attribute name="dockWidgetArea">
+    <number>2</number>
+   </attribute>
+   <widget class="QWidget" name="dockWidgetContents_12">
+    <layout class="QHBoxLayout" name="horizontalLayout_8">
+     <property name="spacing">
+      <number>0</number>
+     </property>
+     <property name="leftMargin">
+      <number>0</number>
+     </property>
+     <property name="topMargin">
+      <number>0</number>
+     </property>
+     <property name="rightMargin">
+      <number>0</number>
+     </property>
+     <property name="bottomMargin">
+      <number>0</number>
+     </property>
+     <item>
+      <widget class="DownloadView" name="downloadView" native="true"/>
+     </item>
+    </layout>
+   </widget>
+  </widget>
   <action name="quit">
    <property name="text">
     <string>&amp;Quit</string>
@@ -1712,6 +1745,12 @@ font-size: 14pt</string>
    <header>MiningView.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>DownloadView</class>
+   <extends>QWidget</extends>
+   <header>DownloadView.h</header>
+   <container>1</container>
+  </customwidget>
  </customwidgets>
  <tabstops>
   <tabstop>destination</tabstop>

eth/main.cpp

@@ -747,7 +747,7 @@ int main(int argc, char** argv)
 			c.startMining();
 		while (true)
 		{
-			if (c.blockChain().details().number - n == mining)
+			if (c.isMining() && c.blockChain().details().number - n == mining)
 				c.stopMining();
 			this_thread::sleep_for(chrono::milliseconds(100));
 		}

libethereum/EthereumHost.cpp

@@ -97,7 +97,6 @@ bool EthereumHost::ensureInitialised(TransactionQueue& _tq)
 
 void EthereumHost::noteDoneBlocks()
 {
-	clog(NetNote) << "Peer given up on blocks fetch.";
 	if (m_blocksOnWay.empty())
 	{
 		// Done our chain-get.
@@ -135,13 +134,15 @@ void EthereumHost::doWork()
 void EthereumHost::maintainTransactions(TransactionQueue& _tq, h256 _currentHash)
 {
 	bool resendAll = (_currentHash != m_latestBlockSent);
-
+	{
+		lock_guard<recursive_mutex> l(m_incomingLock);
 		for (auto it = m_incomingTransactions.begin(); it != m_incomingTransactions.end(); ++it)
 			if (_tq.import(&*it))
 			{}//ret = true;		// just putting a transaction in the queue isn't enough to change the state - it might have an invalid nonce...
 			else
 				m_transactionsSent.insert(sha3(*it));	// if we already had the transaction, then don't bother sending it on.
 		m_incomingTransactions.clear();
+	}
 
 	// Send any new transactions.
 	for (auto const& p: peers())

libethereum/EthereumHost.h

@@ -46,6 +46,126 @@ namespace eth
 class TransactionQueue;
 class BlockQueue;
 
+using UnsignedRange = std::pair<unsigned, unsigned>;
+using UnsignedRanges = std::vector<UnsignedRange>;
+
+class RangeMask
+{
+public:
+	RangeMask() {}
+	RangeMask(unsigned _begin, unsigned _end): m_ranges({{_begin, _end}}) {}
+
+	RangeMask& operator+=(RangeMask const& _m)
+	{
+		for (auto const& i: _m.m_ranges)
+			operator+=(i);
+		return *this;
+	}
+	RangeMask& operator+=(UnsignedRange const& _m)
+	{
+		for (auto i = _m.first; i < _m.second;)
+		{
+			// for each number, we find the element equal or next lower. this must contain the value.
+			auto it = m_ranges.lower_bound(i);
+			auto uit = m_ranges.upper_bound(i + 1);
+			if (it == m_ranges.end() || it->second < i)
+				// lower range is too low to merge.
+				// if the next higher range is too high.
+				if (uit == m_ranges.end() || uit->first > _m.second)
+				{
+					// just create a new range
+					m_ranges[i] = _m.second;
+					break;
+				}
+				else
+				{
+					if (uit->first == i)
+						// move i to end of range
+						i = uit->second;
+					else
+					{
+						// merge with the next higher range
+						// move i to end of range
+						i = m_ranges[i] = uit->second;
+						i = uit->second;
+						m_ranges.erase(uit);
+					}
+				}
+			else if (it->second == i)
+			{
+				// if the next higher range is too high.
+				if (uit == m_ranges.end() || uit->first > _m.second)
+				{
+					// merge with the next lower range
+					m_ranges[it->first] = _m.second;
+					break;
+				}
+				else
+				{
+					// merge with both next lower & next higher.
+					i = m_ranges[it->first] = uit->second;
+					m_ranges.erase(uit);
+				}
+			}
+			else
+				i = it->second;
+		}
+		return *this;
+	}
+
+	RangeMask& operator+=(unsigned _i)
+	{
+		return operator+=(UnsignedRange(_i, _i + 1));
+	}
+
+	bool contains(unsigned _i) const
+	{
+		auto it = m_ranges.lower_bound(_i);
+		return it != m_ranges.end() && it->first <= _i && it->second > _i;
+	}
+
+private:
+	std::map<unsigned, unsigned> m_ranges;
+};
+
+#if 0
+class DownloadSub
+{
+	friend class DownloadMan;
+
+public:
+	h256s nextFetch();
+	void noteBlock(h256 _hash, bytesConstRef _data);
+
+private:
+	void resetFetch();		// Called by DownloadMan when we need to reset the download.
+
+	DownloadMan* m_man;
+
+	Mutex m_fetch;
+	h256s m_fetching;
+	h256s m_activeGet;
+	bool m_killFetch;
+	RangeMask m_attempted;
+};
+
+class DownloadMan
+{
+	friend class DownloadSub;
+
+public:
+	void resetToChain(h256s const& _chain);
+
+private:
+	void cancelFetch(DownloadSub* );
+	void noteBlock(h256 _hash, bytesConstRef _data);
+
+	h256s m_chain;
+	RangeMask m_complete;
+	std::map<DownloadSub*, UnsignedRange> m_fetching;
+};
+#endif
+
 /**
  * @brief The EthereumHost class
  * @warning None of this is thread-safe. You have been warned.

libethereum/EthereumPeer.cpp

@@ -148,14 +148,17 @@ bool EthereumPeer::interpret(RLP const& _r)
 		break;
 	}
 	case TransactionsPacket:
+	{
 		clogS(NetMessageSummary) << "Transactions (" << dec << (_r.itemCount() - 1) << "entries)";
 		addRating(_r.itemCount() - 1);
+		lock_guard<recursive_mutex> l(host()->m_incomingLock);
 		for (unsigned i = 1; i < _r.itemCount(); ++i)
 		{
 			host()->m_incomingTransactions.push_back(_r[i].data().toBytes());
 			m_knownTransactions.insert(sha3(_r[i].data()));
 		}
 		break;
+	}
 	case GetBlockHashesPacket:
 	{
 		h256 later = _r[1].toHash<h256>();
@@ -306,6 +309,7 @@ void EthereumPeer::continueGettingChain()
 	}
 	else
 	{
+		if (m_failedBlocks.size())
 		clogS(NetMessageSummary) << "No blocks left to get. Peer doesn't seem to have" << m_failedBlocks.size() << "of our needed blocks.";
 		host()->noteDoneBlocks();
 	}

libethereum/Executive.cpp

@@ -187,6 +187,7 @@ bool Executive::go(OnOpFunc const& _onOp)
 		catch (VMException const& _e)
 		{
 			clog(StateChat) << "VM Exception: " << _e.description();
+			m_endGas = m_vm->gas();
 		}
 		catch (Exception const& _e)
 		{

libevm/VM.h

@@ -41,7 +41,6 @@ class BreakPointHit: public VMException {};
 class BadInstruction: public VMException {};
 class OutOfGas: public VMException {};
 class StackTooSmall: public VMException { public: StackTooSmall(u256 _req, u256 _got): req(_req), got(_got) {} u256 req; u256 got; };
-class OperandOutOfRange: public VMException { public: OperandOutOfRange(u256 _min, u256 _max, u256 _got): mn(_min), mx(_max), got(_got) {} u256 mn; u256 mx; u256 got; };
 
 // Convert from a 256-bit integer stack/memory entry into a 160-bit Address hash.
 // Currently we just pull out the right (low-order in BE) 160-bits.