First addition of files to do the cuda queue. Makefiles and configure now compile with cuda

src/lock.h

 /*******************************************************************************
  * This file is part of QuickSched.
- * Coypright (c) 2013 Pedro Gonnet (pedro.gonnet@durham.ac.uk)
+ * Coypright (c) 2013 Pedro Gonnet (pedro.gonnet@durham.ac.uk), Aidan Chalk (aidan.chalk@durham.ac.uk)
  * 
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published
@@ -26,7 +26,29 @@
 # endif
 #endif
 
-#ifdef PTHREAD_LOCK
+#ifdef WITH_CUDA
+#undef INLINE
+#endif
+
+
+#ifdef WITH_CUDA
+    #define lock_type volatile int
+    #define lock_init( l ) ( *l = 0 )
+    #define lock_destroy( l ) 0
+    INLINE static int lock_lock ( volatile int *l ) {
+        while( atomicCAS( l , 0 , 1 ) != 0 );
+        return 0;
+        }
+    INLINE static int lock_trylock ( volatile int *l ) {
+        int res = atomicCAS( l , 0 , 1 );
+        return res;
+    }
+    INLINE static int lock_unlock ( volatile int *l ) {
+        int res = atomicCAS ( l , 1 , 0 ) != 1;
+        return res;
+    }
+    #define lock_unlock_blink( l ) atomicCAS( l , 1 , 0 )
+#elif defined (PTHREAD_LOCK)
     #define lock_type pthread_spinlock_t
     #define lock_init( l ) ( pthread_spin_init( l , PTHREAD_PROCESS_PRIVATE ) != 0 )
     #define lock_destroy( l ) ( pthread_spin_destroy( l ) != 0 )

src/res.h

@@ -33,4 +33,9 @@ struct res {
     /* The resource's parent. */
     int parent;
 
+    #ifdef WITH_CUDA
+    void* data, gpu_data;
+    int size;
+    #endif
+
     };