summaryrefslogtreecommitdiffstats
path: root/src/H5HLpkg.h
blob: 8052eb14817fb8eba22d42b2f62da6ad7efa0898 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
 *             Wednesday, July 9, 2003
 *
 * Purpose:     This file contains declarations which are visible
 *              only within the H5HL package. Source files outside the
 *              H5HL package should include H5HLprivate.h instead.
 */
#ifndef H5HL_PACKAGE
#error "Do not include this file outside the H5HL package!"
#endif

#ifndef _H5HLpkg_H
#define _H5HLpkg_H

/* Get package's private header */
#include "H5HLprivate.h"

/* Other private headers needed by this file */
#include "H5FLprivate.h"	/* Free lists                           */


/*****************************/
/* Package Private Variables */
/*****************************/

/* The local heap prefix cache subclass */
H5_DLLVAR const H5AC_class_t H5AC_LHEAP_PRFX[1];

/* The local heap data block cache subclass */
H5_DLLVAR const H5AC_class_t H5AC_LHEAP_DBLK[1];

/* Declare extern the free list to manage the H5HL_free_t struct */
H5FL_EXTERN(H5HL_free_t);

/* Declare extern the PQ free list to manage the heap chunk information */
H5FL_BLK_EXTERN(lheap_chunk);


/**************************/
/* Package Private Macros */
/**************************/

#define H5HL_SIZEOF_HDR(F)						      \
    H5HL_ALIGN(H5_SIZEOF_MAGIC +	/*heap signature		*/    \
	       1 +			/*version			*/    \
	       3 +			/*reserved			*/    \
	       H5F_SIZEOF_SIZE(F) +	/*data size			*/    \
	       H5F_SIZEOF_SIZE(F) +	/*free list head		*/    \
	       H5F_SIZEOF_ADDR(F))	/*data address			*/

/* Value indicating end of free list on disk */
#define H5HL_FREE_NULL	1


/****************************/
/* Package Private Typedefs */
/****************************/

typedef struct H5HL_free_t {
    size_t		offset;		/*offset of free block		*/
    size_t		size;		/*size of free block		*/
    struct H5HL_free_t	*prev;		/*previous entry in free list	*/
    struct H5HL_free_t	*next;		/*next entry in free list	*/
} H5HL_free_t;

/* Forward declarations */
typedef struct H5HL_dblk_t H5HL_dblk_t;
typedef struct H5HL_prfx_t H5HL_prfx_t;

struct H5HL_t {
    /* General heap-management fields */
    size_t                  rc;         /* Ref. count for prefix & data block using this struct */
    size_t                  prots;      /* # of times the heap has been protected */
    size_t                  sizeof_size; /* Size of file sizes */
    size_t                  sizeof_addr; /* Size of file addresses */
    hbool_t                 single_cache_obj;   /* Indicate if the heap is a single object in the cache */

    /* Prefix-specific fields */
    H5HL_prfx_t            *prfx;       /* The prefix object for the heap */
    haddr_t                 prfx_addr;  /* address of heap prefix */
    size_t                  prfx_size;  /* size of heap prefix */

    /* Data block-specific fields */
    H5HL_dblk_t            *dblk;       /* The data block object for the heap */
    haddr_t		    dblk_addr;	/* address of data block	*/
    size_t		    dblk_size;	/* size of heap data block on disk and in mem */
    uint8_t		   *dblk_image;	/* The data block image */
    H5HL_free_t		   *freelist;	/*the free list			*/
};

/* Struct for heap data block */
struct H5HL_dblk_t {
    H5AC_info_t cache_info;    /* Information for H5AC cache functions, _must_ be */
                                /* first field in structure */
    H5HL_t                 *heap;       /* Pointer to heap for data block */
};

/* Struct for heap prefix */
struct H5HL_prfx_t {
    H5AC_info_t cache_info;    /* Information for H5AC cache functions, _must_ be */
                                /* first field in structure */
    H5HL_t                 *heap;       /* Pointer to heap for prefix */
};

/* Callback information for loading local heap prefix from disk */
typedef struct H5HL_cache_prfx_ud_t {
    /* Downwards */
    size_t sizeof_size;                 /* Size of file sizes */
    size_t sizeof_addr;                 /* Size of file addresses */
    size_t sizeof_prfx;                 /* Size of heap prefix */

    /* Upwards */
    hbool_t loaded;                     /* Whether prefix was loaded from file */
    hsize_t free_block;                 /* First free block in heap */
} H5HL_cache_prfx_ud_t;

/* Callback information for loading local heap data block from disk */
typedef struct H5HL_cache_dblk_ud_t {
    /* Downwards */
    H5HL_t *heap;                       /* Local heap */
    hsize_t free_block;                 /* First free block in heap */

    /* Upwards */
    hbool_t loaded;                     /* Whether data block was loaded from file */
} H5HL_cache_dblk_ud_t;


/******************************/
/* Package Private Prototypes */
/******************************/

/* Heap routines */
H5_DLL H5HL_t *H5HL_new(size_t sizeof_size, size_t sizeof_addr, size_t prfx_size);
H5_DLL herr_t H5HL_dest(H5HL_t *heap);

/* Heap prefix routines */
H5_DLL H5HL_prfx_t *H5HL_prfx_new(H5HL_t *heap);
H5_DLL herr_t H5HL_prfx_dest(H5HL_prfx_t *prfx);

/* Heap data block routines */
H5_DLL H5HL_dblk_t *H5HL_dblk_new(H5HL_t *heap);
H5_DLL herr_t H5HL_dblk_dest(H5F_t *f, H5HL_dblk_t *dblk);

#endif /* _H5HLpkg_H */