summaryrefslogtreecommitdiffstats
path: root/c++/src/H5LaccProp.cpp
blob: 559c432882e2761ad971fc59462deda8cefab723 (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 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.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include <string>

#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5PropList.h"
#include "H5LaccProp.h"

namespace H5 {

#ifndef DOXYGEN_SHOULD_SKIP_THIS
// This DOXYGEN_SHOULD_SKIP_THIS block is a work-around approach to control
// the order of creation and deletion of the global constants.  See Design Notes
// in "H5PredType.cpp" for information.

// Initialize a pointer for the constant
LinkAccPropList *LinkAccPropList::DEFAULT_ = 0;

//--------------------------------------------------------------------------
// Function:    LinkAccPropList::getConstant
//              Creates a LinkAccPropList object representing the HDF5 constant
//              H5P_LINK_ACCESS, pointed to by LinkAccPropList::DEFAULT_
// exception    H5::PropListIException
// Description
//              If LinkAccPropList::DEFAULT_ already points to an allocated
//              object, throw a PropListIException.  This scenario should not
//              happen.
// Programmer   Binh-Minh Ribler - December, 2016
//--------------------------------------------------------------------------
LinkAccPropList *
LinkAccPropList::getConstant()
{
    // Tell the C library not to clean up, H5Library::termH5cpp will call
    // H5close - more dependency if use H5Library::dontAtExit()
    if (!IdComponent::H5dontAtexit_called) {
        (void)H5dont_atexit();
        IdComponent::H5dontAtexit_called = true;
    }

    // If the constant pointer is not allocated, allocate it. Otherwise,
    // throw because it shouldn't be.
    if (DEFAULT_ == 0)
        DEFAULT_ = new LinkAccPropList(H5P_LINK_ACCESS);
    else
        throw PropListIException("LinkAccPropList::getConstant",
                                 "LinkAccPropList::getConstant is being invoked on an allocated DEFAULT_");
    return (DEFAULT_);
}

//--------------------------------------------------------------------------
// Function:    LinkAccPropList::deleteConstants
// Purpose:     Deletes the constant object that LinkAccPropList::DEFAULT_
//              points to.
// exception    H5::PropListIException
// Programmer   Binh-Minh Ribler - December, 2016
//--------------------------------------------------------------------------
void
LinkAccPropList::deleteConstants()
{
    if (DEFAULT_ != 0)
        delete DEFAULT_;
}

//--------------------------------------------------------------------------
// Purpose:     Constant for default property
//--------------------------------------------------------------------------
const LinkAccPropList &LinkAccPropList::DEFAULT = *getConstant();

#endif // DOXYGEN_SHOULD_SKIP_THIS

//--------------------------------------------------------------------------
// Function:    Default Constructor
///\brief       Creates a file access property list
// Programmer   Binh-Minh Ribler - December, 2016
//--------------------------------------------------------------------------
LinkAccPropList::LinkAccPropList() : PropList(H5P_LINK_ACCESS) {}

//--------------------------------------------------------------------------
// Function:    LinkAccPropList copy constructor
///\brief       Copy Constructor: same HDF5 object as \a original
///\param       original - IN: LinkAccPropList instance to copy
// Programmer   Binh-Minh Ribler - December, 2016
//--------------------------------------------------------------------------
LinkAccPropList::LinkAccPropList(const LinkAccPropList &original) : PropList(original) {}

//--------------------------------------------------------------------------
// Function:    LinkAccPropList overloaded constructor
///\brief       Creates a file access property list using the id of an
///             existing one.
// Programmer   Binh-Minh Ribler - December, 2016
//--------------------------------------------------------------------------
LinkAccPropList::LinkAccPropList(const hid_t plist_id) : PropList(plist_id) {}

//--------------------------------------------------------------------------
// Function:    LinkAccPropList::setNumLinks
///\brief       Set the number of soft or user-defined link traversals allowed
///             before the library assumes it has found a cycle and aborts the
///             traversal.
///
///\exception   H5::PropListIException
// Programmer   Binh-Minh Ribler - March 1, 2017
//--------------------------------------------------------------------------
void
LinkAccPropList::setNumLinks(size_t nlinks) const
{
    herr_t ret_value = H5Pset_nlinks(id, nlinks);
    // Throw exception if H5Pset_nlinks returns failure
    if (ret_value < 0) {
        throw PropListIException("setNumLinks", "H5Pset_nlinks failed");
    }
}

//--------------------------------------------------------------------------
// Function:    LinkAccPropList::getNumLinks
///\brief       Gets the number of soft or user-defined links that can be
///             traversed before a failure occurs.
///
///\exception   H5::PropListIException
// Programmer   Binh-Minh Ribler - March 1, 2017
//--------------------------------------------------------------------------
size_t
LinkAccPropList::getNumLinks() const
{
    size_t nlinks    = 0;
    herr_t ret_value = H5Pget_nlinks(id, &nlinks);
    // Throw exception if H5Pget_nlinks returns failure
    if (ret_value < 0) {
        throw PropListIException("getNumLinks", "H5Pget_nlinks failed");
    }
    return (nlinks);
}

//--------------------------------------------------------------------------
// Function:    LinkAccPropList destructor
///\brief       Noop destructor
// Programmer   Binh-Minh Ribler - December, 2016
//--------------------------------------------------------------------------
LinkAccPropList::~LinkAccPropList() {}

} // namespace H5