From 8f27e65bddd7d4b8515ce620fb485fdd78fcdf89 Mon Sep 17 00:00:00 2001
From: Constantin Jucovschi <cj@ubuntu.localdomain>
Date: Fri, 24 Apr 2009 07:20:22 -0400
Subject: Initial commit

---
 network/akgnet_commbuffer.cc | 190 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 network/akgnet_commbuffer.cc

(limited to 'network/akgnet_commbuffer.cc')

diff --git a/network/akgnet_commbuffer.cc b/network/akgnet_commbuffer.cc
new file mode 100644
index 0000000..3c5c561
--- /dev/null
+++ b/network/akgnet_commbuffer.cc
@@ -0,0 +1,190 @@
+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community 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.
+*
+* Rasdaman community 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 rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+/
+/**
+ * SOURCE: akgnet_commbuffer.cc
+ *
+ * MODULE: akg network
+ * CLASS:  CommBuffer
+ *
+ * COMMENTS:
+ *
+ */
+
+#include <akgnet_commbuffer.hh>
+#include <string>
+#include <assert.h>
+
+
+akg::CommBuffer::CommBuffer() throw()
+  {
+    data     = NULL;
+    buffSize = 0;
+    fillSize = 0;
+    sendSize = 0;
+    allocated= false;
+   }
+   
+akg::CommBuffer::CommBuffer(int size) throw()
+  {
+    assert(size > 0);
+    allocate(size);
+   }
+   
+akg::CommBuffer::CommBuffer(void *externalBuffer,int totalSize, int dataSize) throw()
+  {
+    data = NULL;
+    takeOver(externalBuffer,totalSize,dataSize);
+   }
+      
+akg::CommBuffer::~CommBuffer() throw()
+  {
+    freeBuffer();
+   }
+
+bool  akg::CommBuffer::allocate(int size) throw()
+  {
+    assert(size > 0);
+    
+    freeBuffer();
+    data = new char[size];
+    // new throws?
+    buffSize=size;
+    allocated=true;
+    return true;
+   }
+
+void akg::CommBuffer::freeBuffer() throw()
+  {
+    if(allocated == true && data != NULL) delete[] data;
+    data     = NULL;
+    buffSize = 0;
+    fillSize = 0;
+    sendSize = 0;
+    allocated= false;
+   }
+   
+void akg::CommBuffer::takeOver(void *externalBuffer,int totalSize, int dataSize) throw()
+  {
+    assert(externalBuffer != 0);
+    assert(totalSize > 0);
+    assert(dataSize >= 0);
+    assert(totalSize >= dataSize);
+    
+    freeBuffer();
+    data     = (char*)externalBuffer;
+    buffSize = totalSize;
+    fillSize = dataSize;
+   }
+   
+bool akg::CommBuffer::resize(int newSize) throw()
+  {
+    assert(data != 0);
+    
+    // we can't make the buffer smaller by truncating inside data!
+    if(newSize < fillSize) return false;
+    
+    char *newData = new char[newSize];
+    memcpy(newData, data, fillSize);
+    if(allocated == true ) delete[] data;
+    
+    data      = newData;
+    buffSize  = newSize;
+    allocated = true;
+    return true; 
+   }
+            
+void* akg::CommBuffer::getData()          throw(){ return data;}
+int   akg::CommBuffer::getDataSize()      throw(){ return fillSize;}
+int   akg::CommBuffer::getBufferSize()    throw(){ return buffSize;}
+int   akg::CommBuffer::getSendedSize()    throw(){ return sendSize;}
+int   akg::CommBuffer::getNotFilledSize() throw(){ return buffSize-fillSize;}
+int   akg::CommBuffer::getNotSendedSize() throw(){ return fillSize-sendSize;}
+bool  akg::CommBuffer::isAllocated()      throw(){ return allocated;}
+      
+int akg::CommBuffer::read(FileDescriptor &socket) throw()
+  {
+    int rasp = socket.read(data+fillSize,buffSize-fillSize);
+    
+    if(rasp>=0) fillSize += rasp;
+    
+    return rasp;
+   }
+   
+int akg::CommBuffer::read(const void *externalBuffer,int size) throw()
+  {
+    assert(externalBuffer != 0);
+    assert(size >= 0);
+    
+    int cpSize = size<(buffSize-fillSize) ? size:(buffSize-fillSize);
+    
+    memcpy(data+fillSize,externalBuffer,cpSize);
+    fillSize += cpSize;
+    
+    return cpSize;
+   }
+
+int akg::CommBuffer::reserve(int size) throw()
+  {
+    assert(size >= 0);
+    
+    int cpSize = size<(buffSize-fillSize) ? size:(buffSize-fillSize);
+    
+    fillSize += cpSize;
+    
+    return cpSize;
+   }
+      
+int akg::CommBuffer::write(FileDescriptor &socket) throw()
+  {
+    DBTALK("CommBuffer write fillSize="<<fillSize<<" sendSize="<<sendSize);
+    int rasp = socket.write(data+sendSize,fillSize-sendSize);
+    
+    if(rasp>=0) sendSize+=rasp;
+    
+    return rasp;
+   }
+   
+int akg::CommBuffer::write(void *externalBuffer,int size) throw()
+  {
+    assert(externalBuffer != 0);
+    assert(size >= 0);
+    
+    int cpSize = size<(fillSize-sendSize) ? size:(fillSize-sendSize);
+    
+    memcpy(externalBuffer,data+sendSize,cpSize);
+    sendSize+=cpSize;
+    
+    return cpSize;
+   }
+      
+void akg::CommBuffer::clearToRead() throw()
+  {
+    DBTALK("CommBuffer clearToRead");
+    fillSize=0;sendSize=0;
+   }
+void akg::CommBuffer::clearToWrite() throw()
+  {
+    DBTALK("CommBuffer clearToWrite");
+    sendSize=0;
+   }
+
-- 
cgit