Merge pull request #2310 from sipa/progressbar

Progressbar based on time-based estimation of transactions.

src/checkpoints.cpp

@@ -14,13 +14,25 @@ namespace Checkpoints
 {
     typedef std::map<int, uint256> MapCheckpoints;
 
-    //
+    // How many times we expect transactions after the last checkpoint to
+    // be slower. This number is conservative. On multi-core CPUs with
+    // parallel signature checking enabled, this number is way too high.
+    // We prefer a progressbar that's faster at the end than the other
+    // way around, though.
+    static const double fSigcheckVerificationFactor = 15.0;
+
+    struct CCheckpointData {
+        const MapCheckpoints *mapCheckpoints;
+        int64 nTimeLastCheckpoint;
+        int64 nTransactionsLastCheckpoint;
+        double fTransactionsPerDay;
+    };
+
     // What makes a good checkpoint block?
     // + Is surrounded by blocks with reasonable timestamps
     //   (no blocks before with a timestamp after, none after with
     //    timestamp before)
     // + Contains no strange transactions
-    //
     static MapCheckpoints mapCheckpoints =
         boost::assign::map_list_of
         ( 11111, uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
@@ -33,30 +45,81 @@ namespace Checkpoints
         (210000, uint256("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e"))
         (216116, uint256("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e"))
         ;
+    static const CCheckpointData data = {
+        &mapCheckpoints,
+        1357902690, // * UNIX timestamp of last checkpoint block
+        11011160,   // * total number of transactions between genesis and last checkpoint
+                    //   (the tx=... number in the SetBestChain debug.log lines)
+        50000.0     // * estimated number of transactions per day after checkpoint
+    };
 
-    static MapCheckpoints mapCheckpointsTestnet =
+    static MapCheckpoints mapCheckpointsTestnet = 
         boost::assign::map_list_of
         ( 546, uint256("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70"))
         ;
+    static const CCheckpointData dataTestnet = {
+        &mapCheckpointsTestnet,
+        1338180505,
+        16341,
+        300
+    };
+
+    const CCheckpointData &Checkpoints() {
+        if (fTestNet)
+            return dataTestnet;
+        else
+            return data;
+    }
 
     bool CheckBlock(int nHeight, const uint256& hash)
     {
         if (!GetBoolArg("-checkpoints", true))
             return true;
 
-        MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
+        const MapCheckpoints& checkpoints = *Checkpoints().mapCheckpoints;
 
         MapCheckpoints::const_iterator i = checkpoints.find(nHeight);
         if (i == checkpoints.end()) return true;
         return hash == i->second;
     }
 
+    // Guess how far we are in the verification process at the given block index
+    double GuessVerificationProgress(CBlockIndex *pindex) {
+        if (pindex==NULL)
+            return 0.0;
+
+        int64 nNow = time(NULL);
+
+        double fWorkBefore = 0.0; // Amount of work done before pindex
+        double fWorkAfter = 0.0;  // Amount of work left after pindex (estimated)
+        // Work is defined as: 1.0 per transaction before the last checkoint, and
+        // fSigcheckVerificationFactor per transaction after.
+
+        const CCheckpointData &data = Checkpoints();
+
+        if (pindex->nChainTx <= data.nTransactionsLastCheckpoint) {
+            double nCheapBefore = pindex->nChainTx;
+            double nCheapAfter = data.nTransactionsLastCheckpoint - pindex->nChainTx;
+            double nExpensiveAfter = (nNow - data.nTimeLastCheckpoint)/86400.0*data.fTransactionsPerDay;
+            fWorkBefore = nCheapBefore;
+            fWorkAfter = nCheapAfter + nExpensiveAfter*fSigcheckVerificationFactor;
+        } else {
+            double nCheapBefore = data.nTransactionsLastCheckpoint;
+            double nExpensiveBefore = pindex->nChainTx - data.nTransactionsLastCheckpoint;
+            double nExpensiveAfter = (nNow - pindex->nTime)/86400.0*data.fTransactionsPerDay;
+            fWorkBefore = nCheapBefore + nExpensiveBefore*fSigcheckVerificationFactor;
+            fWorkAfter = nExpensiveAfter*fSigcheckVerificationFactor;
+        }
+
+        return fWorkBefore / (fWorkBefore + fWorkAfter);
+    }
+
     int GetTotalBlocksEstimate()
     {
         if (!GetBoolArg("-checkpoints", true))
             return 0;
 
-        MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
+        const MapCheckpoints& checkpoints = *Checkpoints().mapCheckpoints;
 
         return checkpoints.rbegin()->first;
     }
@@ -66,7 +129,7 @@ namespace Checkpoints
         if (!GetBoolArg("-checkpoints", true))
             return NULL;
 
-        MapCheckpoints& checkpoints = (fTestNet ? mapCheckpointsTestnet : mapCheckpoints);
+        const MapCheckpoints& checkpoints = *Checkpoints().mapCheckpoints;
 
         BOOST_REVERSE_FOREACH(const MapCheckpoints::value_type& i, checkpoints)
         {

src/checkpoints.h

@@ -22,6 +22,8 @@ namespace Checkpoints
 
     // Returns last CBlockIndex* in mapBlockIndex that is a checkpoint
     CBlockIndex* GetLastCheckpoint(const std::map<uint256, CBlockIndex*>& mapBlockIndex);
+
+    double GuessVerificationProgress(CBlockIndex *pindex);
 }
 
 #endif

src/qt/bitcoingui.cpp

@@ -67,7 +67,8 @@ BitcoinGUI::BitcoinGUI(QWidget *parent):
     aboutQtAction(0),
     trayIcon(0),
     notificator(0),
-    rpcConsole(0)
+    rpcConsole(0),
+    prevBlocks(0)
 {
     resize(850, 550);
     setWindowTitle(tr("Bitcoin") + " - " + tr("Wallet"));
@@ -527,54 +528,19 @@ void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
         importText = tr("Reindexing blocks on disk...");
     }
 
+    QDateTime lastBlockDate = clientModel->getLastBlockDate();
+    QDateTime currentDate = QDateTime::currentDateTime();
+    int secs = lastBlockDate.secsTo(currentDate);
+
     if(count < nTotalBlocks)
     {
-        int nRemainingBlocks = nTotalBlocks - count;
-        float nPercentageDone = count / (nTotalBlocks * 0.01f);
-
-        progressBarLabel->setText(importText);
-        progressBarLabel->setVisible(true);
-        progressBar->setFormat(tr("~%n block(s) remaining", "", nRemainingBlocks));
-        progressBar->setMaximum(nTotalBlocks);
-        progressBar->setValue(count);
-        progressBar->setVisible(true);
-
-        tooltip = tr("Processed %1 of %2 blocks of transaction history (%3% done).").arg(count).arg(nTotalBlocks).arg(nPercentageDone, 0, 'f', 2);
+        tooltip = tr("Processed %1 of %2 (estimated) blocks of transaction history.").arg(count).arg(nTotalBlocks);
     }
     else
     {
-        progressBarLabel->setVisible(false);
-
-        progressBar->setVisible(false);
         tooltip = tr("Processed %1 blocks of transaction history.").arg(count);
     }
 
-    QDateTime lastBlockDate = clientModel->getLastBlockDate();
-    int secs = lastBlockDate.secsTo(QDateTime::currentDateTime());
-    QString text;
-
-    // Represent time from last generated block in human readable text
-    if(secs <= 0)
-    {
-        // Fully up to date. Leave text empty.
-    }
-    else if(secs < 60)
-    {
-        text = tr("%n second(s) ago","",secs);
-    }
-    else if(secs < 60*60)
-    {
-        text = tr("%n minute(s) ago","",secs/60);
-    }
-    else if(secs < 24*60*60)
-    {
-        text = tr("%n hour(s) ago","",secs/(60*60));
-    }
-    else
-    {
-        text = tr("%n day(s) ago","",secs/(60*60*24));
-    }
-
     // Set icon state: spinning if catching up, tick otherwise
     if(secs < 90*60 && count >= nTotalBlocks)
     {
@@ -582,20 +548,46 @@ void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
         labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE));
 
         overviewPage->showOutOfSyncWarning(false);
+
+        progressBarLabel->setVisible(false);
+        progressBar->setVisible(false);
     }
     else
     {
+        // Represent time from last generated block in human readable text
+        QString timeBehindText;
+        if(secs < 48*60*60)
+        {
+            timeBehindText = tr("%n hour(s)","",secs/(60*60));
+        }
+        else if(secs < 14*24*60*60)
+        {
+            timeBehindText = tr("%n day(s)","",secs/(24*60*60));
+        }
+        else
+        {
+            timeBehindText = tr("%n week(s)","",secs/(7*24*60*60));
+        }
+
+        progressBarLabel->setText(importText);
+        progressBarLabel->setVisible(true);
+        progressBar->setFormat(tr("%1 behind").arg(timeBehindText));
+        progressBar->setMaximum(1000000000);
+        progressBar->setValue(clientModel->getVerificationProgress() * 1000000000.0 + 0.5);
+        progressBar->setVisible(true);
+
         tooltip = tr("Catching up...") + QString("<br>") + tooltip;
         labelBlocksIcon->setMovie(syncIconMovie);
-        syncIconMovie->start();
+        if(count != prevBlocks)
+            syncIconMovie->jumpToNextFrame();
+        prevBlocks = count;
 
         overviewPage->showOutOfSyncWarning(true);
-    }
 
-    if(!text.isEmpty())
-    {
         tooltip += QString("<br>");
-        tooltip += tr("Last received block was generated %1.").arg(text);
+        tooltip += tr("Last received block was generated %1 ago.").arg(timeBehindText);
+        tooltip += QString("<br>");
+        tooltip += tr("Transactions after this will not yet be visible.");
     }
 
     // Don't word-wrap this (fixed-width) tooltip

src/qt/bitcoingui.h

@@ -98,6 +98,8 @@ private:
     RPCConsole *rpcConsole;
 
     QMovie *syncIconMovie;
+    /** Keep track of previous number of blocks, to detect progress */
+    int prevBlocks;
 
     /** Create the main UI actions. */
     void createActions();

src/qt/clientmodel.cpp

@@ -6,6 +6,7 @@
 
 #include "alert.h"
 #include "main.h"
+#include "checkpoints.h"
 #include "ui_interface.h"
 
 #include <QDateTime>
@@ -54,6 +55,11 @@ QDateTime ClientModel::getLastBlockDate() const
         return QDateTime::fromTime_t(1231006505); // Genesis block's time
 }
 
+double ClientModel::getVerificationProgress() const
+{
+    return Checkpoints::GuessVerificationProgress(pindexBest);
+}
+
 void ClientModel::updateTimer()
 {
     // Some quantities (such as number of blocks) change so fast that we don't want to be notified for each change.

src/qt/clientmodel.h

@@ -34,6 +34,7 @@ public:
     int getNumBlocks() const;
     int getNumBlocksAtStartup();
 
+    double getVerificationProgress() const;
     QDateTime getLastBlockDate() const;
 
     //! Return true if client connected to testnet

src/qt/guiconstants.h

@@ -2,7 +2,7 @@
 #define GUICONSTANTS_H
 
 /* Milliseconds between model updates */
-static const int MODEL_UPDATE_DELAY = 500;
+static const int MODEL_UPDATE_DELAY = 250;
 
 /* AskPassphraseDialog -- Maximum passphrase length */
 static const int MAX_PASSPHRASE_SIZE = 1024;