From 2c351a8bccdfe0fe9ad0ccb4dba5e15ef23b4c0c Mon Sep 17 00:00:00 2001
From: manuel <manuel@mausz.at>
Date: Wed, 13 Apr 2011 17:24:38 +0200
Subject: - rewrite network methods (ugly but good performance) - fix memleaks

---
 pacman-c++/util.cpp | 122 +++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 102 insertions(+), 20 deletions(-)

(limited to 'pacman-c++/util.cpp')

diff --git a/pacman-c++/util.cpp b/pacman-c++/util.cpp
index c60f2df..2fb9f69 100644
--- a/pacman-c++/util.cpp
+++ b/pacman-c++/util.cpp
@@ -1,5 +1,4 @@
 #include "util.h"
-
 #include <QtNetwork/QTcpSocket>
 
 namespace Util
@@ -27,6 +26,13 @@ namespace Util
     return map;
   }
 
+  void deleteMap(Transmission::map_t map)
+  {
+    for (unsigned int x = 0; x < Constants::map_size.width; ++x)
+      delete[] map[x];
+    delete[] map;
+  }
+
   // temporary
   Transmission::map_t createDemoMap()
   {
@@ -141,32 +147,108 @@ namespace Util
     return def;
   }
 
-  void QByteArrayToStdString(const QByteArray& arr, std::string& str)
+  QSharedPointer<QByteArray> createPacket(const ::google::protobuf::MessageLite& packet)
   {
-    // TODO: normal conversion to std::string won't work,
-    // probably due to \0-bytes.
-    //std::string dataStr = std::string(data.constData());
-    //std::string dataStr = QString(data).toStdString();
-    for (int i=0; i<arr.size(); ++i)
-      str += arr[i];
-  }
+    qint64 packetlen = packet.ByteSize();
+    /* datalen = packet with length prepended */
+    qint64 datalen = sizeof(qint64) + packetlen;
 
-  void sendPacket(const ::google::protobuf::Message& packet, QTcpSocket *socket)
-  {
-    std::string dataStr = packet.SerializeAsString();
-    const char *data = dataStr.c_str();
-    sendPacket(data, dataStr.length(), socket);
+    QSharedPointer<QByteArray> data = QSharedPointer<QByteArray>(new QByteArray);
+    data->resize(datalen);
+
+    /* use QDataStream for length to avoid endianess shit */
+    QDataStream out(data.data(), QIODevice::WriteOnly);
+    out << packetlen;
+
+    /* use protobuf.SerializeWithCachedSizesToArray() to avoid calling protobuf.ByteSize() again */
+    ::google::protobuf::uint8 *dataptr = reinterpret_cast<google::protobuf::uint8 *>(data->data());
+    packet.SerializeWithCachedSizesToArray(dataptr + sizeof(qint64));
+
+    return data;
   }
 
-  void sendPacket(const char *data, int length, QTcpSocket *socket)
+  bool sendPacket(QByteArray *data, QTcpSocket *socket)
   {
-    int bytesWritten = socket->write(data, length);
-    if (bytesWritten != length)
+    int bytesWritten = socket->write(*data);
+    if (bytesWritten != data->size())
     {
-      qDebug() << "[sendPacket] Not all data has been sent."
-          << "written=" << bytesWritten << ", length=" << length;
+      qWarning() << "[sendPacket] Not all data has been sent:"
+          << "written=" << bytesWritten << ", length=" << data->size();
+      return false;
     }
-    Q_ASSERT(bytesWritten == length);
     socket->flush();
+    return true;
+  }
+
+  bool sendPacket(const ::google::protobuf::MessageLite& packet, QTcpSocket *socket)
+  {
+    return sendPacket(createPacket(packet).data(), socket);
+  }
+
+  QSharedPointer<QByteArray> receivePacket(QTcpSocket *socket)
+  {
+    QDataStream in(socket);
+    qint64 datalen;
+    in >> datalen;
+
+    QSharedPointer<QByteArray> data = QSharedPointer<QByteArray>(new QByteArray);
+    data->resize(datalen);
+    socket->read(data->data(), data->size());
+    return data;
+  }
+
+#if 0
+  void hexdump(void *pAddressIn, long  lSize)
+  {
+   char szBuf[100];
+   long lIndent = 1;
+   long lOutLen, lIndex, lIndex2, lOutLen2;
+   long lRelPos;
+   struct { char *pData; unsigned long lSize; } buf;
+   unsigned char *pTmp,ucTmp;
+   unsigned char *pAddress = (unsigned char *)pAddressIn;
+
+     buf.pData   = (char *)pAddress;
+     buf.lSize   = lSize;
+
+     while (buf.lSize > 0)
+     {
+        pTmp     = (unsigned char *)buf.pData;
+        lOutLen  = (int)buf.lSize;
+        if (lOutLen > 16)
+            lOutLen = 16;
+
+        // create a 64-character formatted output line:
+        sprintf(szBuf, " >                            "
+                       "                      "
+                       "    %08lX", pTmp-pAddress);
+        lOutLen2 = lOutLen;
+
+        for(lIndex = 1+lIndent, lIndex2 = 53-15+lIndent, lRelPos = 0;
+            lOutLen2;
+            lOutLen2--, lIndex += 2, lIndex2++
+           )
+        {
+           ucTmp = *pTmp++;
+
+           sprintf(szBuf + lIndex, "%02X ", (unsigned short)ucTmp);
+           if(!isprint(ucTmp))  ucTmp = '.'; // nonprintable char
+           szBuf[lIndex2] = ucTmp;
+
+           if (!(++lRelPos & 3))     // extra blank after 4 bytes
+           {  lIndex++; szBuf[lIndex+2] = ' '; }
+        }
+
+        if (!(lRelPos & 3)) lIndex--;
+
+        szBuf[lIndex  ]   = '<';
+        szBuf[lIndex+1]   = ' ';
+
+        printf("%s\n", szBuf);
+
+        buf.pData   += lOutLen;
+        buf.lSize   -= lOutLen;
+     }
   }
+#endif
 }
-- 
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