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diff --git a/src/core/dsp/source_cache.h b/src/core/dsp/source_cache.h
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+/******************************************************************************
+ * Copyright (c) 2013-2014, Texas Instruments Incorporated - http://www.ti.com/
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are met:
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above copyright
+ *         notice, this list of conditions and the following disclaimer in the
+ *         documentation and/or other materials provided with the distribution.
+ *       * Neither the name of Texas Instruments Incorporated nor the
+ *         names of its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ *   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ *   THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+#ifndef _source_cache_
+#define _source_cache_
+
+#include <llvm/Support/raw_ostream.h>
+#include <llvm/Bitcode/ReaderWriter.h>
+
+#include <boost/lexical_cast.hpp>
+#include <boost/crc.hpp>
+
+#include <sys/stat.h>
+
+#include <string>
+#include <iostream>
+#include <sstream>
+#include <vector>
+#include <stdint.h>
+#include "u_locks_pthread.h"
+#include "database.h"
+
+class source_cache
+{
+  public:
+    void remember(std::string source)
+    {
+        uint32_t hash = get_crc(source);
+        std::string query("insert into programs(hash, source) values("
+                      + boost::lexical_cast<std::string>(hash) 
+                      + ", \""
+                      + source
+                      + "\");");
+
+        p_database.query(query.c_str());
+    }
+
+    /*-------------------------------------------------------------------------
+    * Thread safe instance function for singleton behavior
+    *------------------------------------------------------------------------*/
+    static source_cache* instance ()
+    {
+        static Mutex Cache_instance_mutex;
+        source_cache* tmp = pInstance;
+
+        __sync_synchronize();
+
+        if (tmp == 0)
+        {
+            ScopedLock lck(Cache_instance_mutex);
+
+            tmp = pInstance;
+            if (tmp == 0)
+            {
+                char *user = getenv("USER");
+                tmp = new source_cache("/tmp/opencl_source_" + string(user));
+                __sync_synchronize();
+                pInstance = tmp;
+            }
+        }
+        return tmp;
+    }
+
+
+  private:
+    static source_cache* pInstance;
+    std::string p_dbname;
+    Database    p_database;
+
+  private:
+    source_cache(std::string db_name) : p_dbname(db_name), p_database(db_name.c_str())
+    {
+        p_database.query("create table if not exists "
+                "programs(hash integer, source string);");
+    }
+
+    uint32_t get_crc(std::string& my_string)
+    {
+        boost::crc_32_type result;
+        result.process_bytes(my_string.data(), my_string.length());
+        return result.checksum();
+    }
+
+    source_cache(const source_cache&);              // copy ctor disallowed
+    source_cache& operator=(const source_cache&);   // assignment disallowed
+};
+
+#endif // _source_cache_
+
+