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/*************************************************************************/
/* */
/* Copyright Mentor Graphics Corporation 2004 */
/* All Rights Reserved. */
/* */
/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */
/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */
/* SUBJECT TO LICENSE TERMS. */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* FILE NAME VERSION */
/* */
/* dm_defs.h Nucleus PLUS 1.15 */
/* */
/* COMPONENT */
/* */
/* DM - Dynamic Memory Management */
/* */
/* DESCRIPTION */
/* */
/* This file contains data structure definitions and constants for */
/* the Dynamic Memory component. */
/* */
/* DATA STRUCTURES */
/* */
/* DM_PCB Dynamic Pool control block */
/* DM_HEADER Header of each memory block */
/* DM_SUSPEND Memory suspension block */
/* */
/* DEPENDENCIES */
/* */
/* cs_defs.h Common service definitions */
/* tc_defs.h Thread Control definitions */
/* */
/*************************************************************************/
#include "plus/inc/cs_defs.h" /* Common service constants */
#include "plus/inc/tc_defs.h" /* Thread control constants */
/* Check to see if the file has been included already. */
#ifndef DM_DEFS
#define DM_DEFS
/* Adjust a size to something that is evenly divisible by the number of bytes
in an UNSIGNED data type. */
#define DM_ADJUSTED_SIZE(size) \
((((size) + sizeof(UNSIGNED) - 1)/sizeof(UNSIGNED)) * sizeof(UNSIGNED))
#define DM_ADJUSTED_ALIGNMENT(alignment) DM_ADJUSTED_SIZE(alignment)
/* Define constants local to this component. */
#define DM_DYNAMIC_ID 0x44594e41UL
#define DM_OVERHEAD ((sizeof(DM_HEADER) + sizeof(UNSIGNED) \
- 1)/sizeof(UNSIGNED)) * \
sizeof(UNSIGNED)
/* Define the Dynamic Pool Control Block data type. */
typedef struct DM_PCB_STRUCT
{
CS_NODE dm_created; /* Node for linking to */
/* created dynamic pools */
TC_PROTECT dm_protect; /* Protection structure */
UNSIGNED dm_id; /* Internal PCB ID */
CHAR dm_name[NU_MAX_NAME]; /* Dynamic Pool name */
VOID *dm_start_address; /* Starting pool address */
UNSIGNED dm_pool_size; /* Size of pool */
UNSIGNED dm_min_allocation; /* Minimum allocate size */
UNSIGNED dm_available; /* Total available bytes */
struct DM_HEADER_STRUCT
*dm_memory_list; /* Memory list */
struct DM_HEADER_STRUCT
*dm_search_ptr; /* Search pointer */
BOOLEAN dm_fifo_suspend; /* Suspension type flag */
#if PAD_1
DATA_ELEMENT dm_padding[PAD_1];
#endif
UNSIGNED dm_tasks_waiting; /* Number of waiting tasks*/
struct DM_SUSPEND_STRUCT
*dm_suspension_list; /* Suspension list */
} DM_PCB;
/* Define the header structure that is in front of each memory block. */
typedef struct DM_HEADER_STRUCT
{
struct DM_HEADER_STRUCT
*dm_next_memory, /* Next memory block */
*dm_previous_memory; /* Previous memory block */
BOOLEAN dm_memory_free; /* Memory block free flag */
#if PAD_1
DATA_ELEMENT dm_padding[PAD_1];
#endif
DM_PCB *dm_memory_pool; /* Dynamic pool pointer */
} DM_HEADER;
/* Define the dynamic memory suspension structure. This structure is
allocated off of the caller's stack. */
typedef struct DM_SUSPEND_STRUCT
{
CS_NODE dm_suspend_link; /* Link to suspend blocks */
DM_PCB *dm_memory_pool; /* Pointer to pool */
UNSIGNED dm_request_size; /* Size of memory request */
TC_TCB *dm_suspended_task; /* Task suspended */
VOID *dm_return_pointer; /* Return memory address */
STATUS dm_return_status; /* Return status */
} DM_SUSPEND;
#endif