Add a new test to make sure that the partitionning/unpartitionning mechanisms

are working properly.

tests/Makefile.am

@@ -83,6 +83,7 @@ check_PROGRAMS += 				\
 	datawizard/write_only_tmp_buffer	\
 	datawizard/dining_philosophers		\
 	datawizard/readers_and_writers		\
+	datawizard/unpartition			\
 	errorcheck/starpu_init_noworker		\
 	errorcheck/invalid_blocking_calls	\
 	helper/cublas_init			\
@@ -137,6 +138,9 @@ datawizard_dining_philosophers_SOURCES = 	\
 datawizard_readers_and_writers_SOURCES = 	\
 	datawizard/readers_and_writers.c
 
+datawizard_unpartition_SOURCES =		\
+	datawizard/unpartition.c
+
 errorcheck_starpu_init_noworker_SOURCES =	\
 	errorcheck/starpu_init_noworker.c
 

tests/datawizard/unpartition.c

@@ -0,0 +1,110 @@
+/*
+ * StarPU
+ * Copyright (C) INRIA 2008-2009 (see AUTHORS file)
+ *
+ * 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 by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * 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 Lesser General Public License in COPYING.LGPL for more details.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <starpu.h>
+#include <stdlib.h>
+
+#define NITER		1000
+#define VECTORSIZE	1024
+
+float *buffer;
+
+starpu_data_handle v_handle;
+
+static void dummy_codelet(void *descr[], __attribute__ ((unused)) void *_args)
+{
+}
+
+static starpu_codelet cl = {
+	.where = CORE|CUDA,
+	.core_func = dummy_codelet,
+#ifdef USE_CUDA
+	.cuda_func = dummy_codelet,
+#endif
+	.nbuffers = 1
+};
+
+int use_handle(starpu_data_handle handle)
+{
+	int ret;
+	struct starpu_task *task;
+
+	task = starpu_task_create();
+		task->cl = &cl;
+		task->buffers[0].handle = handle;
+		task->buffers[0].mode = STARPU_RW;
+		task->detach = 0;
+
+	ret = starpu_submit_task(task);
+
+	return ret;
+}
+
+int main(int argc, char **argv)
+{
+	int ret;
+
+	starpu_init(NULL);
+
+	starpu_malloc_pinned_if_possible((void **)&buffer, VECTORSIZE);
+
+	/* The buffer should never be explicitely allocated */
+	starpu_register_vector_data(&v_handle, 0, (uintptr_t)buffer, VECTORSIZE, sizeof(char));
+
+	starpu_filter f = {
+		.filter_func = starpu_divide_in_2_filter_func_vector,
+		.filter_arg = VECTORSIZE/2
+	};
+
+	unsigned iter;
+	for (iter = 0; iter < NITER; iter++)
+	{
+		starpu_map_filters(v_handle, 1, &f);
+	
+		ret = use_handle(get_sub_data(v_handle, 1, 0));
+		if (ret == -ENODEV)
+			goto enodev;
+	
+		ret = use_handle(get_sub_data(v_handle, 1, 1));
+		if (ret == -ENODEV)
+			goto enodev;
+	
+		starpu_wait_all_tasks();
+	
+		starpu_unpartition_data(v_handle, 0);
+	
+		ret = use_handle(v_handle);
+		if (ret == -ENODEV)
+			goto enodev;
+	
+		starpu_wait_all_tasks();
+	}
+
+	starpu_delete_data(v_handle);
+
+	starpu_shutdown();
+
+	return 0;
+
+enodev:
+	fprintf(stderr, "WARNING: No one can execute this task\n");
+	/* 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 */
+	return 0;
+}