rm_defs.h

NecluesRTX RTOS的源码

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/*        Copyright 1990,1991,1992 by Accelerated Technology            */
/*                                                                      */
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/*  subject matter of this material.  All manufacturing, reproduction,  */
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/************************************************************************/
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/*  FILE DESCRIPTION                                                    */
/*                                                                      */
/*  This file contains the description of the Resource Management       */
/*  Structures and the Resource Suspension Structures.                  */
/*                                                                      */
/*  ROUTINES                                                            */
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/*      None                                                            */
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/*  NOTES                                                               */
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/* The structure "RM_SUSPENSION_STRUCT" defines the information necessary 
   to suspend a task on one semaphore.  This structure is allocated off 
   of the calling application stack.  */

struct RM_SUSPENSION_STRUCT 
{
    signed int               rm_task_id;    /* Task suspended           */
    signed int           rm_semaphore_id;   /* ID of semaphore          */
    signed int              *rm_return_addr;/* Address to return value  */
    struct RM_SUSPENSION_STRUCT
                            *rm_next_susp,  /* Next suspension ptr      */
                            *rm_prev_susp;  /* Previous suspension ptr  */
};


/* The structure "RM_RESOURCE_CONTROL_STRUCT" defines the information 
   necessary to manage a semaphore.  In the file "RM.C" an array of these 
   structures is allocated relative to the number of semaphores defined
   in "IN_DATA.C."  */

struct RM_RESOURCE_CONTROL_STRUCT 
{
    unsigned int             rm_semaphore;  /* Semaphore count          */
    signed int               rm_task_id;    /* Task that has resource   */
    struct RM_SUSPENSION_STRUCT
                            *rm_wait_head,  /* Semaphore wait head      */
                            *rm_wait_tail;  /* Semaphore wait tail      */
};