task.h

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/* 
 * OpenVirtualization: 
 * For additional details and support contact [email protected].
 * Additional documentation can be found at www.openvirtualization.org
 * 
 * Copyright (C) 2010-2014 SierraWare
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * 
 */
/* 
 *  Helper function declarations of task management
 */

#ifndef __OTZ_TASK_H__
#define __OTZ_TASK_H__

#include <sw_types.h>
#include <sw_list.h>
#include <otz_common.h>
#include <cpu_task.h>
#include <sw_wait.h>

typedef struct sa_config_t
{
    int     service_uuid;
    char    service_name[32];
    u32     stack_size;
/*  Name of the entry function */
    char    entry_func[32];
    pa_t    entry_point;
    u32     elf_flag;
    char    file_path[255];
    char    process_name[32];
/* service func pointer */
    int     (*process)(u32 ,void*, u32,void*,u32, struct otzc_encode_meta *, u32*);
    void*   data;
}sa_config_t;


enum task_state_e {
    TASK_STATE_SUSPEND = 0,
    TASK_STATE_WAIT,
    TASK_STATE_READY_TO_RUN,
    TASK_STATE_RUNNING
};

typedef struct sw_tls
{
        pa_t params[4];
    u32 ret_val;
    u32 ipi_ret_val;
    int elf_flag;
    int (*process)(u32 svc_cmd_id,void *req_buf, u32 req_buf_len,
                    void *resp_buf, u32 resp_buf_len, struct otzc_encode_meta *
                    meta_data, u32 *ret_res_buf_len);   
    void *private_data;
}sw_tls;

typedef struct user_access_control{
    char *username; //task name;
    u32 uid; //user id
    u32 gid; //group id
}acl_t;


struct sw_task {
    struct list head;
    struct list ready_head;
    struct list pending_head;
    u32 task_id;
    u32 service_id;         
    pa_t entry_addr;
    char name[32];          
    u32 state;
    void* task_sp;
    u32 task_sp_size;
    sw_tls* tls;
    struct sw_task_cpu_regs regs;
    struct wait_queue_head wq_head;
    acl_t acl;
};


int create_task(sa_config_t *psa_config, int *task_id);

int destroy_task(int task_id);

int start_task(int task_id, pa_t* params);

void task_context_switch(struct sw_task *new_task, struct sw_task *old_task, void *regs);

int get_task_state(int task_id);


int print_task(int task_id);

void resume_async_task(int task_id);

sw_tls* get_task_tls(int task_id);

struct sw_task* get_task(int task_id);
#endif /* __OTZ_TASK_H__ */