forgot one file during previous commit

mpi/tests/mpi_isend_detached.c

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+/*
+ * 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 <starpu_mpi.h>
+#include <pthread.h>
+
+#define NITER	2048
+#define SIZE	16
+
+static float *tab;
+static starpu_data_handle tab_handle;
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+
+void callback(void *arg __attribute__((unused)))
+{
+	unsigned *sent = arg;
+	
+	pthread_mutex_lock(&mutex);
+	*sent = 1;
+	pthread_cond_signal(&cond);
+	pthread_mutex_unlock(&mutex);
+}
+
+int main(int argc, char **argv)
+{
+	MPI_Init(NULL, NULL);
+
+	int rank, size;
+
+	MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+	MPI_Comm_size(MPI_COMM_WORLD, &size);
+
+	if (size != 2)
+	{
+		if (rank == 0)
+			fprintf(stderr, "We need exactly 2 processes.\n");
+
+		MPI_Finalize();
+		return 0;
+	}
+
+	starpu_init(NULL);
+	starpu_mpi_initialize();
+
+	tab = malloc(SIZE*sizeof(float));
+
+	starpu_register_vector_data(&tab_handle, 0, (uintptr_t)tab, SIZE, sizeof(float));
+
+	unsigned nloops = NITER;
+	unsigned loop;
+
+	int other_rank = (rank + 1)%2;
+
+	for (loop = 0; loop < nloops; loop++)
+	{
+		if (rank == 0)
+		{
+			MPI_Status status;
+			struct starpu_mpi_req_s req;
+
+			int sent = 0;
+			starpu_mpi_isend_detached(tab_handle, &req, other_rank, loop, MPI_COMM_WORLD, callback, &sent);
+
+			pthread_mutex_lock(&mutex);
+			while (!sent)
+				pthread_cond_wait(&cond, &mutex);
+			pthread_mutex_unlock(&mutex);
+		}
+		else {
+			MPI_Status status;
+			starpu_mpi_recv(tab_handle, other_rank, loop, MPI_COMM_WORLD, &status);
+		}
+	}
+	
+	starpu_mpi_shutdown();
+	starpu_shutdown();
+
+	MPI_Finalize();
+
+	return 0;
+}