tests: add a new testcase datawizard/copy.c to test CPU-GPU data transfert

tests/Makefile.am

@@ -121,6 +121,7 @@ noinst_PROGRAMS =				\
 	datawizard/acquire_cb_insert		\
 	datawizard/acquire_release		\
 	datawizard/acquire_release2		\
+	datawizard/copy				\
 	datawizard/data_implicit_deps		\
 	datawizard/data_lookup			\
 	datawizard/scratch			\

tests/datawizard/copy.c

@@ -0,0 +1,102 @@
+/* StarPU --- Runtime system for heterogeneous multicore architectures.
+ *
+ * Copyright (C) 2010-2011  Université de Bordeaux 1
+ * Copyright (C) 2010, 2011  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>
+
+#define FPRINTF(ofile, fmt, args ...) do { if (!getenv("STARPU_SSILENT")) {fprintf(ofile, fmt, ##args); }} while(0)
+
+static unsigned nloops = 1000;
+
+static void dummy_func(void *descr[] __attribute__ ((unused)), void *arg __attribute__ ((unused)))
+{
+}
+
+static starpu_codelet cpu_codelet =
+{
+        .where = STARPU_CPU,
+        .cpu_func = dummy_func,
+        .model = NULL,
+        .nbuffers = 1
+};
+
+static starpu_codelet gpu_codelet =
+{
+        .where = STARPU_CUDA|STARPU_OPENCL,
+        .cuda_func = dummy_func,
+        .opencl_func = dummy_func,
+        .model = NULL,
+        .nbuffers = 1
+};
+
+
+int main(int argc, char **argv)
+{
+        float foo;
+	starpu_data_handle float_array_handle;
+        int i;
+
+        starpu_init(NULL);
+
+	if (starpu_worker_get_count_by_type(STARPU_CUDA_WORKER) == 0 && starpu_worker_get_count_by_type(STARPU_OPENCL_WORKER) == 0)
+	{
+		FPRINTF(stderr, "This application requires a CUDA or OpenCL Worker\n");
+		starpu_shutdown();
+		return 77;
+	}
+
+        foo = 0.0f;
+	starpu_variable_data_register(&float_array_handle, 0, (uintptr_t)&foo, sizeof(foo));
+
+        for (i = 0; i < nloops; i++)
+        {
+		struct starpu_task *task_cpu, *task_gpu;
+                int ret;
+
+		task_cpu = starpu_task_create();
+		task_gpu = starpu_task_create();
+
+		task_cpu->cl = &cpu_codelet;
+		task_cpu->callback_func = NULL;
+		task_cpu->buffers[0].handle = float_array_handle;
+		task_cpu->buffers[0].mode = STARPU_RW;
+
+		task_gpu->cl = &gpu_codelet;
+		task_gpu->callback_func = NULL;
+		task_gpu->buffers[0].handle = float_array_handle;
+		task_gpu->buffers[0].mode = STARPU_RW;
+
+		ret = starpu_task_submit(task_cpu);
+		if (STARPU_UNLIKELY(ret == -ENODEV))
+		{
+			FPRINTF(stderr, "No worker may execute this task\n");
+			exit(0);
+		}
+
+		ret = starpu_task_submit(task_gpu);
+		if (STARPU_UNLIKELY(ret == -ENODEV))
+		{
+			FPRINTF(stderr, "No worker may execute this task\n");
+			exit(0);
+		}
+        }
+
+	starpu_task_wait_for_all();
+	starpu_data_unregister(float_array_handle);
+        starpu_shutdown();
+
+        return 0;
+}