/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2009-2012  Université de Bordeaux 1
 * Copyright (C) 2010, 2011  Centre National de la Recherche Scientifique
 * Copyright (C) 2011 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.
 */

#ifndef __CORE_TASK_H__
#define __CORE_TASK_H__

#include <starpu.h>
#include <common/config.h>
#include <core/jobs.h>

/* Internal version of starpu_task_destroy: don't check task->destroy flag */
void _starpu_task_destroy(struct starpu_task *task);

/* In order to implement starpu_task_wait_for_all, we keep track of the number of
 * task currently submitted */
void _starpu_decrement_nsubmitted_tasks(void);
/* In order to implement starpu_task_wait_for_no_ready, we keep track of the number of
 * task currently ready */
void _starpu_increment_nready_tasks(void);
void _starpu_decrement_nready_tasks(void);

/* A pthread key is used to store the task currently executed on the thread.
 * _starpu_initialize_current_task_key initializes this pthread key and
 * _starpu_set_current_task updates its current value. */
void _starpu_initialize_current_task_key(void);
void _starpu_set_current_task(struct starpu_task *task);

/* NB the second argument makes it possible to count regenerable tasks only
 * once. */
int _starpu_submit_job(struct _starpu_job *j);

int _starpu_task_submit_nodeps(struct starpu_task *task);

void _starpu_task_declare_deps_array(struct starpu_task *task, unsigned ndeps, struct starpu_task *task_array[], int check);

/* Returns the job structure (which is the internal data structure associated
 * to a task). */
struct _starpu_job *_starpu_get_job_associated_to_task(struct starpu_task *task);

struct starpu_task *_starpu_create_task_alias(struct starpu_task *task);

/* Submits starpu internal tasks to the initial context */
int _starpu_task_submit_internally(struct starpu_task *task);

int _starpu_handle_needs_conversion_task(starpu_data_handle_t handle,
					 unsigned int node);

int _starpu_task_uses_multiformat_handles(struct starpu_task *task);

int _starpu_task_submit_conversion_task(struct starpu_task *task,
					unsigned int workerid);

void _starpu_task_check_deprecated_fields(struct starpu_task *task);
void _starpu_codelet_check_deprecated_fields(struct starpu_codelet *cl);

starpu_cpu_func_t _starpu_task_get_cpu_nth_implementation(struct starpu_codelet *cl, unsigned nimpl);
starpu_cuda_func_t _starpu_task_get_cuda_nth_implementation(struct starpu_codelet *cl, unsigned nimpl);
starpu_opencl_func_t _starpu_task_get_opencl_nth_implementation(struct starpu_codelet *cl, unsigned nimpl);
starpu_gordon_func_t _starpu_task_get_gordon_nth_implementation(struct starpu_codelet *cl, unsigned nimpl);

#endif // __CORE_TASK_H__