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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* This file contains public declarations for the H5FD (file drivers) developer
* support routines.
*/
#ifndef _H5FDdevelop_H
#define _H5FDdevelop_H
/* Include package's public header */
#include "H5FDpublic.h"
/*****************/
/* Public Macros */
/*****************/
/* Map "fractal heap" header blocks to 'ohdr' type file memory, since its
* a fair amount of work to add a new kind of file memory and they are similar
* enough to object headers and probably too minor to deserve their own type.
*
* Map "fractal heap" indirect blocks to 'ohdr' type file memory, since they
* are similar to fractal heap header blocks.
*
* Map "fractal heap" direct blocks to 'lheap' type file memory, since they
* will be replacing local heaps.
*
* Map "fractal heap" 'huge' objects to 'draw' type file memory, since they
* represent large objects that are directly stored in the file.
*
* -QAK
*/
#define H5FD_MEM_FHEAP_HDR H5FD_MEM_OHDR
#define H5FD_MEM_FHEAP_IBLOCK H5FD_MEM_OHDR
#define H5FD_MEM_FHEAP_DBLOCK H5FD_MEM_LHEAP
#define H5FD_MEM_FHEAP_HUGE_OBJ H5FD_MEM_DRAW
/* Map "free space" header blocks to 'ohdr' type file memory, since its
* a fair amount of work to add a new kind of file memory and they are similar
* enough to object headers and probably too minor to deserve their own type.
*
* Map "free space" serialized sections to 'lheap' type file memory, since they
* are similar enough to local heap info.
*
* -QAK
*/
#define H5FD_MEM_FSPACE_HDR H5FD_MEM_OHDR
#define H5FD_MEM_FSPACE_SINFO H5FD_MEM_LHEAP
/* Map "shared object header message" master table to 'ohdr' type file memory,
* since its a fair amount of work to add a new kind of file memory and they are
* similar enough to object headers and probably too minor to deserve their own
* type.
*
* Map "shared object header message" indices to 'btree' type file memory,
* since they are similar enough to B-tree nodes.
*
* -QAK
*/
#define H5FD_MEM_SOHM_TABLE H5FD_MEM_OHDR
#define H5FD_MEM_SOHM_INDEX H5FD_MEM_BTREE
/* Map "extensible array" header blocks to 'ohdr' type file memory, since its
* a fair amount of work to add a new kind of file memory and they are similar
* enough to object headers and probably too minor to deserve their own type.
*
* Map "extensible array" index blocks to 'ohdr' type file memory, since they
* are similar to extensible array header blocks.
*
* Map "extensible array" super blocks to 'btree' type file memory, since they
* are similar enough to B-tree nodes.
*
* Map "extensible array" data blocks & pages to 'lheap' type file memory, since
* they are similar enough to local heap info.
*
* -QAK
*/
#define H5FD_MEM_EARRAY_HDR H5FD_MEM_OHDR
#define H5FD_MEM_EARRAY_IBLOCK H5FD_MEM_OHDR
#define H5FD_MEM_EARRAY_SBLOCK H5FD_MEM_BTREE
#define H5FD_MEM_EARRAY_DBLOCK H5FD_MEM_LHEAP
#define H5FD_MEM_EARRAY_DBLK_PAGE H5FD_MEM_LHEAP
/* Map "fixed array" header blocks to 'ohdr' type file memory, since its
* a fair amount of work to add a new kind of file memory and they are similar
* enough to object headers and probably too minor to deserve their own type.
*
* Map "fixed array" data blocks & pages to 'lheap' type file memory, since
* they are similar enough to local heap info.
*
*/
#define H5FD_MEM_FARRAY_HDR H5FD_MEM_OHDR
#define H5FD_MEM_FARRAY_DBLOCK H5FD_MEM_LHEAP
#define H5FD_MEM_FARRAY_DBLK_PAGE H5FD_MEM_LHEAP
/*
* 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_DRAW, /*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*/ \
}
/*******************/
/* Public Typedefs */
/*******************/
/* 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;
H5F_close_degree_t fc_degree;
herr_t (*terminate)(void);
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);
herr_t (*query)(const H5FD_t *f1, unsigned long *flags);
herr_t (*get_type_map)(const H5FD_t *file, H5FD_mem_t *type_map);
haddr_t (*alloc)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, hsize_t size);
herr_t (*free)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t size);
haddr_t (*get_eoa)(const H5FD_t *file, H5FD_mem_t type);
herr_t (*set_eoa)(H5FD_t *file, H5FD_mem_t type, haddr_t addr);
haddr_t (*get_eof)(const H5FD_t *file, H5FD_mem_t type);
herr_t (*get_handle)(H5FD_t *file, hid_t fapl, void **file_handle);
herr_t (*read)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl, haddr_t addr, size_t size, void *buffer);
herr_t (*write)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl, haddr_t addr, size_t size, const void *buffer);
herr_t (*flush)(H5FD_t *file, hid_t dxpl_id, hbool_t closing);
herr_t (*truncate)(H5FD_t *file, hid_t dxpl_id, hbool_t closing);
herr_t (*lock)(H5FD_t *file, hbool_t rw);
herr_t (*unlock)(H5FD_t *file);
herr_t (*del)(const char *name, hid_t fapl);
herr_t (*ctl)(H5FD_t *file, uint64_t op_code, uint64_t flags, const void *input, void **output);
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 */
unsigned long fileno; /* File 'serial' number */
unsigned access_flags; /* File access flags (from create or open) */
unsigned long feature_flags; /* VFL Driver feature Flags */
haddr_t maxaddr; /* For this file, overrides class */
haddr_t base_addr; /* Base address for HDF5 data w/in file */
/* Space allocation management fields */
hsize_t threshold; /* Threshold for alignment */
hsize_t alignment; /* Allocation alignment */
hbool_t paged_aggr; /* Paged aggregation for file space is enabled or not */
};
/********************/
/* Public Variables */
/********************/
/*********************/
/* Public Prototypes */
/*********************/
#ifdef __cplusplus
extern "C" {
#endif
H5_DLL hid_t H5FDregister(const H5FD_class_t *cls);
H5_DLL herr_t H5FDunregister(hid_t driver_id);
H5_DLL H5FD_t *H5FDopen(const char *name, unsigned flags, hid_t fapl_id, haddr_t maxaddr);
H5_DLL herr_t H5FDclose(H5FD_t *file);
H5_DLL int H5FDcmp(const H5FD_t *f1, const H5FD_t *f2);
H5_DLL int H5FDquery(const H5FD_t *f, unsigned long *flags);
H5_DLL haddr_t H5FDalloc(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, hsize_t size);
H5_DLL herr_t H5FDfree(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t size);
H5_DLL haddr_t H5FDget_eoa(H5FD_t *file, H5FD_mem_t type);
H5_DLL herr_t H5FDset_eoa(H5FD_t *file, H5FD_mem_t type, haddr_t eoa);
H5_DLL haddr_t H5FDget_eof(H5FD_t *file, H5FD_mem_t type);
H5_DLL herr_t H5FDget_vfd_handle(H5FD_t *file, hid_t fapl, void **file_handle);
H5_DLL herr_t H5FDread(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
void *buf /*out*/);
H5_DLL herr_t H5FDwrite(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
const void *buf);
H5_DLL herr_t H5FDflush(H5FD_t *file, hid_t dxpl_id, hbool_t closing);
H5_DLL herr_t H5FDtruncate(H5FD_t *file, hid_t dxpl_id, hbool_t closing);
H5_DLL herr_t H5FDlock(H5FD_t *file, hbool_t rw);
H5_DLL herr_t H5FDunlock(H5FD_t *file);
H5_DLL herr_t H5FDdelete(const char *name, hid_t fapl_id);
H5_DLL herr_t H5FDctl(H5FD_t *file, uint64_t op_code, uint64_t flags, const void *input, void **output);
#ifdef __cplusplus
}
#endif
#endif /* _H5FDdevelop_H */
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