the begginning

dmlproc/dmlresultbuffer.cpp

@@ -0,0 +1,81 @@
+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program 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; version 2 of
+   the License.
+
+   This program 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 this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/***********************************************************************
+*   $Id: dmlresultbuffer.cpp 927 2013-01-21 14:11:25Z rdempsey $
+*
+*
+***********************************************************************/
+/** @file */
+
+#include "dmlresultbuffer.h"
+
+namespace dmlprocessor
+{
+
+DMLResultBuffer::DMLResultBuffer()
+:fBufferSize(1), fFull(0)
+{
+    
+}
+
+DMLResultBuffer::DMLResultBuffer(int bufferSize)
+:fBufferSize(bufferSize), fFull(0)
+{
+
+}
+
+DMLResultBuffer::~DMLResultBuffer()
+{
+    fResultBuffer.clear();
+}
+
+void DMLResultBuffer::put(dmlpackageprocessor::DMLPackageProcessor::DMLResult result, int sessionID)
+{
+    scoped_lock lock(fMutex);
+    if (fFull == fBufferSize)
+    {
+        while (fFull == fBufferSize)
+            fCond.wait(lock);
+    }
+    ResultPair rp;
+    rp.result = result;
+    rp.sessionID = sessionID;
+
+    fResultBuffer.push_back(rp);
+    ++fFull;
+    fCond.notify_one();
+}
+
+DMLResultBuffer::ResultPair DMLResultBuffer::get()
+{
+    scoped_lock lk(fMutex);
+    if (fFull == 0)
+    {
+        while (fFull == 0)
+            fCond.wait(lk);
+    }
+    ResultPair rp = fResultBuffer[0];
+    fResultBuffer.pop_front();
+    --fFull;
+    fCond.notify_one();
+    return rp;
+}
+
+} //namespace dmlprocessor
+
+