/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2013 Corentin Salingue
 *
 * 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.
 */

typedef void * (*disk_function)(void *, unsigned);

/* list of functions to use on disk */
struct disk_ops {
	 void *  (*alloc)  (void *base, size_t size); /* nom de fichier: mkstemp, et retourne obj */
	 void    (*free)   (void *base, void *obj, size_t size); /* supprime et libère l'obj */
	 void *  (*open)   (void *base, void *pos, size_t size); /* open dans le répertoire  un fichier existant, retourne l'obj */
	 void    (*close)  (void *base, void *obj, size_t size); /* libère l'obj */
	ssize_t  (*read)   (void *base, void *obj, void *buf, off_t offset, size_t size); /* ~= pread */
	ssize_t  (*write)  (void *base, void *obj, const void *buf, off_t offset, size_t size);
	/* readv, writev, read2d, write2d, etc. */
	 void *  (*plug)   (void *parameter); /* en posix, directory, retourne base */
	 void    (*unplug) (void *base); /* libère la base */
};

/* en posix, base = le répertoire, pos = le fichier, obj = la donnée renvoyée à starpu, ici un FILE* */

extern struct disk_ops write_on_file;

unsigned
starpu_disk_register(struct disk_ops * func, void *parameter);

void
starpu_disk_free(unsigned node);