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/*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __ITRON_VARIABLE_MEMORYPOOL_h_
#define __ITRON_VARIABLE_MEMORYPOOL_h_
#ifdef __cplusplus
extern "C" {
#endif
/*
* Create Variable Memory Pool (cre_mpl) Structure
*/
typedef struct t_cmpl {
VP exinf; /* extended information */
ATR mplatr; /* memorypool attributes */
INT mplsz; /* memorypool size */
/* additional information may be included depending on the implementation */
} T_CMPL;
/*
* mplatr
*/
#define TA_TFIFO 0x00 /* waiting tasks are handled by FIFO */
#define TA_TPRI 0x01 /* waiting tasks are handled by priority */
/*
* mplid
*/
#define TMPL_OS (-4) /* memorypool used by OS */
/*
* Reference Variable Memory Pool (ref_mpl) Structure
*/
typedef struct t_rmpl {
VP exinf; /* extended information */
BOOL_ID wtsk; /* indicates whether or not there are waiting tasks */
INT frsz; /* total size of free memory */
INT maxsz; /* size of largest contiguous memory */
/* additional information may be included depending on the implementation */
} T_RMPL;
/*
* Variable Memory Pool Functions
*/
/*
* cre_mpl - Create Variable-Size Memorypool
*/
ER cre_mpl(
ID mplid,
T_CMPL *pk_cmpl
);
/*
* del_mpl - Delete Variable-Size Memorypool
*/
ER del_mpl(
ID mplid
);
/*
* get_blk - Get Variable-Size Memory Block
*/
ER get_blk(
VP *p_blk,
ID mplid,
INT blksz
);
/*
* pget_blk - Poll and Get Variable-Size Memory Block
*/
ER pget_blk(
VP *p_blk,
ID mplid,
INT blksz
);
/*
* tget_blk - Get Variable-Size Memory Block with Timeout
*/
ER tget_blk(
VP *p_blk,
ID mplid,
INT blksz,
TMO tmout
);
/*
* rel_blk - Release Variable-Size Memory Block
*/
ER rel_blk(
ID mplid,
VP blk
);
/*
* ref_mpl - Reference Variable-Size Memorypool Status
*/
ER ref_mpl(
T_RMPL *pk_rmpl,
ID mplid
);
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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