starpu-max/doc/tutorial/hello_world_plugin.c

/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2013,2017                                CNRS
 * Copyright (C) 2012                                     Inria
 *
 * 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 <stdio.h>

/* Task declaration. */
static void my_task (int x) __attribute__ ((task));

/* Definition of the CPU implementation of ‘my task’. */
static void my_task (int x)
{
	printf ("Hello, world! With x = %d\n", x);
}

int main ()
{
/* Initialize StarPU. */
#pragma starpu initialize

/* Do an asynchronous call to ‘my task’. */
	my_task (42);

/* Wait for the call to complete. */
#pragma starpu wait

/* Terminate. */
#pragma starpu shutdown
	return 0;
}