os_const.h

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/******************************************************************************
   Copyright (c) 2006 by RockOS.
   All rights reserved.

   This software is supported by the Rock Software Workroom.

   Any bugs please contact the author with e-mail or QQ:
   E-mail : [e-mail]
       QQ : 59681888
*******************************************************************************
File name   : os_const.h
Description : constants for RockOS.
            :
            : 
Auther      : sunxinqiu
History     :
  2006-3-15   first release.
******************************************************************************/
#ifndef __OS_CONST_H__
#define __OS_CONST_H__

#ifdef __cplusplus
extern "C" {
#endif

#define HIGHEST_TASK_PRIO       1
#define LOWEST_TASK_PRIO        65535

#if MAX_SHELL_CMD > 0
    #define MAX_CMD_NAME_LEN    15
    #define MAX_CMD_ARGS        16
    #define MAX_CMD_DESC_LEN    255
#endif

#define MAX_SYS_MSGQ            MAX_SYS_TASK

/*  Recomments:
 *      In RockOS, queue lib provides FIFO, LIFO and priority base queue three types algrithm.
 *      There are such queues in system:
 *          * 1 ready task queue                        --- (this queue is priority based.)
 *          * max 3 free message packet queue           --- (this queue is FIFO.)
 *          * each task has 1 owned semaphore queue     --- (this queue is LIFO.)
 *          * each semaphore has 1 owner task queue     --- (this queue is a set.)
 *          * each semaphore has 1 pending task queue   --- (this queue is priority based.)
 *      For these, the MAX_QUEUE_NUM should be defined as:
 *          (1 + 3 + MAX_SYS_MSGQ + MAX_SYS_TASK + 2 * MAX_SYS_SEMA)
 */
#define MAX_QUEUE_NUM           (1 + 3 + MAX_SYS_MSGQ + MAX_SYS_TASK + 2 * MAX_SYS_SEMA)

/*  Recomments:
 *      In RockOS, these resources are managed as basec (include FIFO, LIFO and set) queue:
 *          * free message packet queue     --- (FIFO queue)
 *          * task's own semaphores set     --- (LIFO queue)
 *          * semaphore's owner task queue  --- (a set)
 *      Double the total numbers for redundancy.
 */
#define MAX_BASIC_QELEMENT      ((MINI_MSG_NUM + COMMON_MSG_NUM + HUGE_MSG_NUM  \
                                     + MAX_SYS_TASK + MAX_SYS_SEMA) * 2)

/*  Recomments:
 *      In RockOS, only task has priority attribute, double the total number for redundancy.
 */
#define MAX_PRIORITY_QELEMENT   (MAX_SYS_TASK * 2)

#define NULL_EVENT              ((U16)(-1))
#define NULL_HANDLE             ((HANDLE)(-1))
#define NULL_FSM                NULL_HANDLE
#define NULL_QUEUE              NULL_HANDLE
#define NULL_TIMER              NULL_HANDLE
#define NULL_MSG                NULL_HANDLE
#define NULL_MSGQ               NULL_HANDLE
#define NULL_SEMA               NULL_HANDLE
#define NULL_TASK               NULL_HANDLE

#define OS_NO_WAIT              (0)
#define OS_WAIT_FOR_EVER        (-1)

#define OS_SUCCESS              (0)
#define OS_FAIL                 (-1)

#define TICK_TASK_STACK_SIZE    (8*1024)
#define IDLE_TASK_STACK_SIZE    (2*1024)
#define SHELL_TASK_STACK_SIZE   (16*1024)

#ifdef __cplusplus
}
#endif

#endif