summaryrefslogtreecommitdiffstats
path: root/src/H5VLnative_token.c
blob: e03299ebfc22aebf0cb4a2e67ef79cd49fb22f61 (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Purpose:     Object token callbacks for the native VOL connector
 */

/****************/
/* Module Setup */
/****************/

/***********/
/* Headers */
/***********/
#include "H5private.h"          /* Generic Functions        */
#include "H5Eprivate.h"         /* Error handling           */
#include "H5MMprivate.h"        /* Memory handling          */
#include "H5VLnative_private.h" /* Native VOL connector     */

/****************/
/* Local Macros */
/****************/

/******************/
/* Local Typedefs */
/******************/

/********************/
/* Local Prototypes */
/********************/

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

/*****************************/
/* Library Private Variables */
/*****************************/

/*******************/
/* Local Variables */
/*******************/

/*---------------------------------------------------------------------------
 * Function:    H5VL__native_token_cmp
 *
 * Purpose:     Compare two of the connector's object tokens, setting
 *              *cmp_value, following the same rules as strcmp().
 *
 * Return:      Success:    0
 *              Failure:    (can't fail)
 *
 *---------------------------------------------------------------------------
 */
herr_t
H5VL__native_token_cmp(void H5_ATTR_UNUSED *obj, const H5O_token_t *token1, const H5O_token_t *token2,
                       int *cmp_value)
{
    herr_t ret_value = SUCCEED;

    FUNC_ENTER_PACKAGE_NOERR

    /* Check parameters */
    assert(token1);
    assert(token2);

    *cmp_value = memcmp(token1, token2, sizeof(H5O_token_t));

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_token_cmp() */

/*---------------------------------------------------------------------------
 * Function:    H5VL__native_token_to_str
 *
 * Purpose:     Serialize an object token into a string
 *
 * Return:      Success:    0
 *              Failure:    -1
 *
 *---------------------------------------------------------------------------
 */
herr_t
H5VL__native_token_to_str(void *obj, H5I_type_t obj_type, const H5O_token_t *token, char **token_str)
{
    haddr_t addr;
    size_t  addr_ndigits;
    herr_t  ret_value = SUCCEED;

    FUNC_ENTER_PACKAGE

    /* Check parameters */
    assert(obj);
    assert(token);

    if (H5VL_native_token_to_addr(obj, obj_type, *token, &addr) < 0)
        HGOTO_ERROR(H5E_FILE, H5E_CANTDECODE, FAIL, "can't convert object token to address");

    if (addr == 0)
        addr_ndigits = 1;
    else
        addr_ndigits = (size_t)(HDfloor(HDlog10((double)addr)) + 1);

    if (NULL == (*token_str = H5MM_malloc(addr_ndigits + 1)))
        HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't allocate buffer for token string");

    HDsnprintf(*token_str, addr_ndigits + 1, "%" PRIuHADDR, addr);

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_token_to_str() */

/*---------------------------------------------------------------------------
 * Function:    H5VL__native_str_to_token
 *
 * Purpose:     Deserialize a string into an object token
 *
 * Return:      Success:    0
 *              Failure:    -1
 *
 *---------------------------------------------------------------------------
 */
herr_t
H5VL__native_str_to_token(void *obj, H5I_type_t obj_type, const char *token_str, H5O_token_t *token)
{
    haddr_t addr;
    herr_t  ret_value = SUCCEED;

    FUNC_ENTER_PACKAGE

    /* Check parameters */
    assert(token_str);

    HDsscanf(token_str, "%" PRIuHADDR, &addr);

    if (H5VL_native_addr_to_token(obj, obj_type, addr, token) < 0)
        HGOTO_ERROR(H5E_FILE, H5E_CANTDECODE, FAIL, "can't convert address to object token");

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5VL__native_str_to_token() */