tests: add simple test to test asynchronous copies with OpenCL

tests/Makefile.am

@@ -192,6 +192,7 @@ noinst_PROGRAMS =				\
 	datawizard/gpu_register   		\
 	datawizard/wt_host			\
 	datawizard/wt_broadcast			\
+	datawizard/readonly			\
 	errorcheck/starpu_init_noworker		\
 	errorcheck/invalid_blocking_calls	\
 	errorcheck/invalid_tasks		\

tests/datawizard/readonly.c

@@ -0,0 +1,74 @@
+/* StarPU --- Runtime system for heterogeneous multicore architectures.
+ *
+ * Copyright (C) 2010  Université de Bordeaux 1
+ * Copyright (C) 2010, 2011, 2012  Centre National de la Recherche Scientifique
+ *
+ * StarPU is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * StarPU 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 Lesser General Public License in COPYING.LGPL for more details.
+ */
+
+#include <starpu.h>
+#ifdef STARPU_USE_OPENCL
+#include <starpu_opencl.h>
+#endif
+#include "../helper.h"
+
+static void codelet(void *descr[], __attribute__ ((unused)) void *_args)
+{
+     FPRINTF(stderr, "codelet\n");
+}
+
+static struct starpu_codelet cl =
+{
+#ifdef STARPU_USE_OPENCL
+     .opencl_funcs = {codelet, NULL},
+#endif
+     .nbuffers = 1,
+     .modes = {STARPU_R}
+};
+
+int main(int argc, char **argv)
+{
+     int ret;
+     int var = 42;
+     starpu_data_handle_t handle;
+
+     ret = starpu_init(NULL);
+     if (ret == -ENODEV) return STARPU_TEST_SKIPPED;
+     STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
+
+     int copy = starpu_disable_asynchronous_copy();
+     FPRINTF(stderr, "copy %d\n", copy);
+
+     starpu_variable_data_register(&handle, 0, (uintptr_t)&var, sizeof(var));
+
+     ret = starpu_insert_task(&cl,
+			      STARPU_R, handle,
+			      0);
+     if (ret == -ENODEV) goto enodev;
+     STARPU_CHECK_RETURN_VALUE(ret, "starpu_insert_task");
+
+     starpu_task_wait_for_all();
+
+     starpu_data_unregister(handle);
+
+     starpu_shutdown();
+
+     return 0;
+
+enodev:
+     starpu_data_unregister(handle);
+     starpu_shutdown();
+     /* yes, we do not perform the computation but we did detect that no one
+      * could perform the kernel, so this is not an error from StarPU */
+     fprintf(stderr, "WARNING: No one can execute this task\n");
+     return STARPU_TEST_SKIPPED;
+}