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/*
* Copyright © 1999 NCSA
* All rights reserved.
*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Monday, July 26, 1999
*/
#ifndef _H5FDpublic_H
#define _H5FDpublic_H
/* Types of allocation requests */
typedef enum H5FD_mem_t {
H5FD_MEM_NOLIST = -1, /*must be negative*/
H5FD_MEM_DEFAULT = 0, /*must be zero*/
H5FD_MEM_SUPER,
H5FD_MEM_BTREE,
H5FD_MEM_DRAW,
H5FD_MEM_GHEAP,
H5FD_MEM_LHEAP,
H5FD_MEM_OHDR,
H5FD_MEM_NTYPES /*must be last*/
} H5FD_mem_t;
/*
* A free-list map which maps all types of allocation requests to a single
* free list. This is useful for drivers that don't really care about
* keeping different requests segregated in the underlying file and which
* want to make most efficient reuse of freed memory. The use of the
* H5FD_MEM_SUPER free list is arbitrary.
*/
#define H5FD_FLMAP_SINGLE { \
H5FD_MEM_SUPER, /*default*/ \
H5FD_MEM_SUPER, /*super*/ \
H5FD_MEM_SUPER, /*btree*/ \
H5FD_MEM_SUPER, /*draw*/ \
H5FD_MEM_SUPER, /*gheap*/ \
H5FD_MEM_SUPER, /*lheap*/ \
H5FD_MEM_SUPER /*ohdr*/ \
}
/*
* A free-list map which segregates requests into `raw' or `meta' data
* pools.
*/
#define H5FD_FLMAP_DICHOTOMY { \
H5FD_MEM_SUPER, /*default*/ \
H5FD_MEM_SUPER, /*super*/ \
H5FD_MEM_SUPER, /*btree*/ \
H5FD_MEM_DRAW, /*draw*/ \
H5FD_MEM_SUPER, /*gheap*/ \
H5FD_MEM_SUPER, /*lheap*/ \
H5FD_MEM_SUPER /*ohdr*/ \
}
/*
* The default free list map which causes each request type to use it's own
* free-list.
*/
#define H5FD_FLMAP_DEFAULT { \
H5FD_MEM_DEFAULT, /*default*/ \
H5FD_MEM_DEFAULT, /*super*/ \
H5FD_MEM_DEFAULT, /*btree*/ \
H5FD_MEM_DEFAULT, /*draw*/ \
H5FD_MEM_DEFAULT, /*gheap*/ \
H5FD_MEM_DEFAULT, /*lheap*/ \
H5FD_MEM_DEFAULT /*ohdr*/ \
}
/* Forward declaration */
typedef struct H5FD_t H5FD_t;
/* Class information for each file driver */
typedef struct H5FD_class_t {
const char *name;
haddr_t maxaddr;
hsize_t (*sb_size)(H5FD_t *file);
herr_t (*sb_encode)(H5FD_t *file, char *name/*out*/,
unsigned char *p/*out*/);
herr_t (*sb_decode)(H5FD_t *f, const char *name, const unsigned char *p);
size_t fapl_size;
void *(*fapl_get)(H5FD_t *file);
void *(*fapl_copy)(const void *fapl);
herr_t (*fapl_free)(void *fapl);
size_t dxpl_size;
void *(*dxpl_copy)(const void *dxpl);
herr_t (*dxpl_free)(void *dxpl);
H5FD_t *(*open)(const char *name, unsigned flags, hid_t fapl,
haddr_t maxaddr);
herr_t (*close)(H5FD_t *file);
int (*cmp)(const H5FD_t *f1, const H5FD_t *f2);
haddr_t (*alloc)(H5FD_t *file, H5FD_mem_t type, hsize_t size);
herr_t (*free)(H5FD_t *file, H5FD_mem_t type, haddr_t addr, hsize_t size);
haddr_t (*get_eoa)(H5FD_t *file);
herr_t (*set_eoa)(H5FD_t *file, haddr_t addr);
haddr_t (*get_eof)(H5FD_t *file);
herr_t (*read)(H5FD_t *file, hid_t dxpl, haddr_t addr, hsize_t size,
void *buffer);
herr_t (*write)(H5FD_t *file, hid_t dxpl, haddr_t addr, hsize_t size,
const void *buffer);
herr_t (*flush)(H5FD_t *file);
H5FD_mem_t fl_map[H5FD_MEM_NTYPES];
} H5FD_class_t;
/* A free list is a singly-linked list of address/size pairs. */
typedef struct H5FD_free_t {
haddr_t addr;
hsize_t size;
struct H5FD_free_t *next;
} H5FD_free_t;
/*
* The main datatype for each driver. Public fields common to all drivers are
* declared here and the driver appends private fields in memory.
*/
struct H5FD_t {
hid_t driver_id; /*driver ID for this file */
const H5FD_class_t *cls; /*constant class info */
haddr_t maxaddr; /*for this file, overrides class*/
H5FD_free_t *fl[H5FD_MEM_NTYPES];/*freelist per allocation type*/
};
#ifdef __cplusplus
extern "C" {
#endif
/* Function prototypes */
hid_t H5FDregister(const H5FD_class_t *cls);
herr_t H5FDunregister(hid_t driver_id);
H5FD_t *H5FDopen(const char *name, unsigned flags, hid_t fapl_id,
haddr_t maxaddr);
herr_t H5FDclose(H5FD_t *file);
int H5FDcmp(const H5FD_t *f1, const H5FD_t *f2);
haddr_t H5FDalloc(H5FD_t *file, H5FD_mem_t type, hsize_t size);
herr_t H5FDfree(H5FD_t *file, H5FD_mem_t type, haddr_t addr, hsize_t size);
haddr_t H5FDrealloc(H5FD_t *file, H5FD_mem_t type, haddr_t addr,
hsize_t old_size, hsize_t new_size);
haddr_t H5FDget_eoa(H5FD_t *file);
herr_t H5FDset_eoa(H5FD_t *file, haddr_t eof);
haddr_t H5FDget_eof(H5FD_t *file);
herr_t H5FDread(H5FD_t *file, hid_t dxpl_id, haddr_t addr, hsize_t size,
void *buf/*out*/);
herr_t H5FDwrite(H5FD_t *file, hid_t dxpl_id, haddr_t addr, hsize_t size,
const void *buf);
herr_t H5FDflush(H5FD_t *file);
#ifdef __cplusplus
}
#endif
#endif
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