the begginning

primitives/primproc/udf.cpp

@@ -0,0 +1,70 @@
+/* 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: udf.cpp 2035 2013-01-21 14:12:19Z rdempsey $
+
+#ifndef _MSC_VER
+#include <dlfcn.h>
+#endif
+#include <string>
+#include <sstream>
+#include <iostream>
+using namespace std;
+
+#include "primproc.h"
+using namespace primitiveprocessor;
+
+namespace
+{
+const string UdfLibName("libcaludf.so");
+}
+
+namespace primitiveprocessor
+{
+
+void loadUDFs()
+{
+#ifndef _MSC_VER
+	int flags = RTLD_NOW;
+
+	void* libPtr = 0;
+
+	UDFFcnPtr_t fcnPtr;
+
+	libPtr = dlopen(UdfLibName.c_str(), flags);
+
+	if (libPtr == 0)
+		return;
+
+	unsigned i = 1;
+	for (;;)
+	{
+		ostringstream oss;
+		oss << "cpfunc" << i;
+		fcnPtr = (UDFFcnPtr_t)dlsym(libPtr, oss.str().c_str());
+		if (fcnPtr == 0)
+			break;
+		UDFFcnMap[i] = fcnPtr;
+		i++;
+	}
+	cout << "loaded " << UDFFcnMap.size() << " UDF's" << endl;
+#endif
+}
+
+}
+// vim:ts=4 sw=4:
+