www.pudn.com > os.rar > pm_defs.h
/*************************************************************************/
/* */
/* 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 */
/* */
/* pm_defs.h Nucleus PLUS 1.15 */
/* */
/* COMPONENT */
/* */
/* PM - Partition Memory Management */
/* */
/* DESCRIPTION */
/* */
/* This file contains data structure definitions and constants for */
/* the Partition Memory component. */
/* */
/* DATA STRUCTURES */
/* */
/* PM_PCB Partition Pool control block */
/* PM_HEADER Header of each partition */
/* PM_SUSPEND Partition 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 PM_DEFS
#define PM_DEFS
/* Define constants local to this component. */
#define PM_PARTITION_ID 0x50415254UL
#define PM_OVERHEAD ((sizeof(PM_HEADER) + sizeof(UNSIGNED) \
- 1)/sizeof(UNSIGNED)) * \
sizeof(UNSIGNED)
/* Define the Partition Pool Control Block data type. */
typedef struct PM_PCB_STRUCT
{
CS_NODE pm_created; /* Node for linking to */
/* created partition list */
UNSIGNED pm_id; /* Internal PCB ID */
CHAR pm_name[NU_MAX_NAME]; /* Partition Pool name */
VOID *pm_start_address; /* Starting pool address */
UNSIGNED pm_pool_size; /* Size of pool */
UNSIGNED pm_partition_size; /* Size of each partition */
UNSIGNED pm_available; /* Available partitions */
UNSIGNED pm_allocated; /* Allocated partitions */
struct PM_HEADER_STRUCT
*pm_available_list; /* Available list */
BOOLEAN pm_fifo_suspend; /* Suspension type flag */
#if PAD_1
DATA_ELEMENT pm_padding[PAD_1];
#endif
UNSIGNED pm_tasks_waiting; /* Number of waiting tasks*/
struct PM_SUSPEND_STRUCT
*pm_suspension_list; /* Suspension list */
} PM_PCB;
/* Define the header structure that is in front of each memory partition. */
typedef struct PM_HEADER_STRUCT
{
struct PM_HEADER_STRUCT
*pm_next_available; /* Next available memory */
/* partition */
PM_PCB *pm_partition_pool; /* Partition pool pointer */
} PM_HEADER;
/* Define the partition suspension structure. This structure is allocated
off of the caller's stack. */
typedef struct PM_SUSPEND_STRUCT
{
CS_NODE pm_suspend_link; /* Link to suspend blocks */
PM_PCB *pm_partition_pool; /* Pointer to pool */
TC_TCB *pm_suspended_task; /* Task suspended */
VOID *pm_return_pointer; /* Return memory address */
STATUS pm_return_status; /* Return status */
} PM_SUSPEND;
#endif